GravityView_frontend

Complexity

Total Complexity

192

Size/Duplication

Total Lines	1578
Duplicated Lines	0 %

Coupling/Cohesion

Components	1
Dependencies	8

Importance

Changes

0

41 Methods

Rating	Name	Duplication	Size	Complexity
A	__construct()	0	1	1
A	initialize()	0	17	1
A	getInstance()	0	9	2
A	getGvOutputData()	0	3	1
A	setGvOutputData()	0	3	1
A	isSearch()	0	3	1
A	setIsSearch()	0	3	1
A	getSingleEntry()	0	3	1
A	setSingleEntry()	0	5	1
A	getEntry()	0	3	1
A	setEntry()	0	8	2
A	getPostId()	0	3	1
A	setPostId()	0	3	1
A	isPostHasShortcode()	0	3	1
A	setPostHasShortcode()	0	3	1
A	isGravityviewPostType()	0	3	1
A	setIsGravityviewPostType()	0	3	1
B	set_context_view_id()	0	21	5
A	get_context_view_id()	0	3	1
C	parse_query_fix_frontpage()	0	53	14
B	parse_content()	0	26	6
A	set_entry_data()	0	5	1
C	is_searching()	0	42	8
C	single_entry_title()	0	57	11
C	insert_view_in_content()	0	35	7
A	comments_open()	0	16	2
B	context_not_configured_warning()	0	33	5
F	render_view()	0	243	30
C	process_search_dates()	0	66	13
B	process_search_only_approved()	0	22	4
B	is_entry_approved()	0	17	6
B	get_search_criteria()	0	49	6
B	get_view_entries()	0	91	6
B	updateViewSorting()	0	22	4
D	_override_sorting_id_by_field_type()	0	88	15
A	is_single_entry()	0	20	2
C	add_scripts_and_styles()	0	82	11
A	enqueue_default_style()	0	17	3
A	add_style()	0	12	4
B	add_columns_sort_links()	0	43	6
B	is_field_sortable()	0	30	3

<?php

For compatibility and reusability of your code, PSR1 recommends that a file should introduce either new symbols (like classes, functions, etc.) or have side-effects (like outputting something, or including other files), but not both at the same time. The first symbol is defined on line 15 and the first side effect is on line 1594.

/**
 * GravityView Frontend functions
 *
 * @package   GravityView
 * @license   GPL2+
 * @author    Katz Web Services, Inc.
 * @link      http://gravityview.co
 * @copyright Copyright 2014, Katz Web Services, Inc.
 *
 * @since 1.0.0
 */


class GravityView_frontend {

Since you have declared the constructor as private, maybe you should also declare the class as final.

	/**
	 * Regex strings that are used to determine whether the current request is a GravityView search or not.
	 * @see GravityView_frontend::is_searching()
	 * @since 1.7.4.1
	 * @var array
	 */
	private static $search_parameters = array( 'gv_search', 'gv_start', 'gv_end', 'gv_id', 'gv_by', 'filter_*' );

	/**
	 * Is the currently viewed post a `gravityview` post type?
	 * @var boolean
	 */
	var $is_gravityview_post_type = false;

The visibility should be declared for property $is_gravityview_post_type.

	/**
	 * Does the current post have a `[gravityview]` shortcode?
	 * @var boolean
	 */
	var $post_has_shortcode = false;

The visibility should be declared for property $post_has_shortcode.

	/**
	 * The Post ID of the currently viewed post. Not necessarily GV
	 * @var int
	 */
	var $post_id = null;

The visibility should be declared for property $post_id.

	/**
	 * Are we currently viewing a single entry?
	 * If so, the int value of the entry ID. Otherwise, false.
	 * @var int|boolean
	 */
	var $single_entry = false;

The visibility should be declared for property $single_entry.

	/**
	 * If we are viewing a single entry, the entry data
	 * @var array|false
	 */
	var $entry = false;

The visibility should be declared for property $entry.

	/**
	 * When displaying the single entry we should always know to which View it belongs (the context is everything!)
	 * @var null
	 */
	var $context_view_id = null;

The visibility should be declared for property $context_view_id.

	/**
	 * The View is showing search results
	 * @since 1.5.4
	 * @var boolean
	 */
	var $is_search = false;

The visibility should be declared for property $is_search.

	/**
	 * The view data parsed from the $post
	 *
	 * @see  GravityView_View_Data::__construct()
	 * @var GravityView_View_Data
	 */
	var $gv_output_data = null;

The visibility should be declared for property $gv_output_data.

	/**
	 * @var GravityView_frontend
	 */
	static $instance;

The visibility should be declared for property $instance.

	/**
	 * Class constructor, enforce Singleton pattern
	 */
	private function __construct() {}

	private function initialize() {
		add_action( 'wp', array( $this, 'parse_content'), 11 );

No space before closing parenthesis of array is bad style

		add_filter( 'parse_query', array( $this, 'parse_query_fix_frontpage' ), 10 );
		add_action( 'template_redirect', array( $this, 'set_entry_data'), 1 );

No space before closing parenthesis of array is bad style

		// Enqueue scripts and styles after GravityView_Template::register_styles()
		add_action( 'wp_enqueue_scripts', array( $this, 'add_scripts_and_styles' ), 20 );

		// Enqueue and print styles in the footer. Added 1 priorty so stuff gets printed at 10 priority.
		add_action( 'wp_print_footer_scripts', array( $this, 'add_scripts_and_styles' ), 1 );

		add_filter( 'the_title', array( $this, 'single_entry_title' ), 1, 2 );
		add_filter( 'the_content', array( $this, 'insert_view_in_content' ) );
		add_filter( 'comments_open', array( $this, 'comments_open' ), 10, 2 );

		add_action( 'gravityview_after', array( $this, 'context_not_configured_warning' ) );
	}

	/**
	 * Get the one true instantiated self
	 * @return GravityView_frontend
	 */
	public static function getInstance() {

The function name getInstance is in camel caps, but expected get_instance instead as per the coding standard.

		if ( empty( self::$instance ) ) {
			self::$instance = new self;
			self::$instance->initialize();
		}

		return self::$instance;
	}

	/**
	 * @return GravityView_View_Data
	 */
	public function getGvOutputData() {

The function name getGvOutputData is in camel caps, but expected get_gv_output_data instead as per the coding standard.

		return $this->gv_output_data;
	}

	/**
	 * @param GravityView_View_Data $gv_output_data
	 */
	public function setGvOutputData( $gv_output_data ) {

The function name setGvOutputData is in camel caps, but expected set_gv_output_data instead as per the coding standard.

		$this->gv_output_data = $gv_output_data;
	}

	/**
	 * @return boolean
	 */
	public function isSearch() {

The function name isSearch is in camel caps, but expected is_search instead as per the coding standard.

		return $this->is_search;
	}

	/**
	 * @param boolean $is_search
	 */
	public function setIsSearch( $is_search ) {

The function name setIsSearch is in camel caps, but expected set_is_search instead as per the coding standard.

		$this->is_search = $is_search;
	}

	/**
	 * @return bool|int
	 */
	public function getSingleEntry() {

The function name getSingleEntry is in camel caps, but expected get_single_entry instead as per the coding standard.

		return $this->single_entry;
	}

	/**
	 * Sets the single entry ID and also the entry
	 * @param bool|int|string $single_entry
	 */
	public function setSingleEntry( $single_entry ) {

The function name setSingleEntry is in camel caps, but expected set_single_entry instead as per the coding standard.

		$this->single_entry = $single_entry;

	}

	/**
	 * @return array
	 */
	public function getEntry() {

The function name getEntry is in camel caps, but expected get_entry instead as per the coding standard.

		return $this->entry;
	}

	/**
	 * Set the current entry
	 * @param array|int $entry Entry array or entry slug or ID
	 */
	public function setEntry( $entry ) {

The function name setEntry is in camel caps, but expected set_entry instead as per the coding standard.

		if ( ! is_array( $entry ) ) {
			$entry = GVCommon::get_entry( $entry );
		}

		$this->entry = $entry;
	}

	/**
	 * @return int
	 */
	public function getPostId() {

The function name getPostId is in camel caps, but expected get_post_id instead as per the coding standard.

		return $this->post_id;
	}

	/**
	 * @param int $post_id
	 */
	public function setPostId( $post_id ) {

The function name setPostId is in camel caps, but expected set_post_id instead as per the coding standard.

		$this->post_id = $post_id;
	}

	/**
	 * @return boolean
	 */
	public function isPostHasShortcode() {

The function name isPostHasShortcode is in camel caps, but expected is_post_has_shortcode instead as per the coding standard.

		return $this->post_has_shortcode;
	}

	/**
	 * @param boolean $post_has_shortcode
	 */
	public function setPostHasShortcode( $post_has_shortcode ) {

The function name setPostHasShortcode is in camel caps, but expected set_post_has_shortcode instead as per the coding standard.

		$this->post_has_shortcode = $post_has_shortcode;
	}

	/**
	 * @return boolean
	 */
	public function isGravityviewPostType() {

The function name isGravityviewPostType is in camel caps, but expected is_gravityview_post_type instead as per the coding standard.

		return $this->is_gravityview_post_type;
	}

	/**
	 * @param boolean $is_gravityview_post_type
	 */
	public function setIsGravityviewPostType( $is_gravityview_post_type ) {

The function name setIsGravityviewPostType is in camel caps, but expected set_is_gravityview_post_type instead as per the coding standard.

		$this->is_gravityview_post_type = $is_gravityview_post_type;
	}

	/**
	 * Set the context view ID used when page contains multiple embedded views or displaying the single entry view
	 *
	 *
	 *
	 * @param null $view_id
	 */
	public function set_context_view_id( $view_id = null ) {

		if ( ! empty( $view_id ) ) {

			$this->context_view_id = $view_id;

		} elseif ( isset( $_GET['gvid'] ) && $this->getGvOutputData()->has_multiple_views() ) {
			/**
			 * used on a has_multiple_views context
			 * @see GravityView_API::entry_link
			 * @see GravityView_View_Data::getInstance()->has_multiple_views()
			 */
			$this->context_view_id = $_GET['gvid'];

Detected access of super global var $_GET, probably need manual inspection.

Detected usage of a non-sanitized input variable: $_GET

		} elseif ( ! $this->getGvOutputData()->has_multiple_views() )  {
			$array_keys = array_keys( $this->getGvOutputData()->get_views() );
			$this->context_view_id = array_pop( $array_keys );
			unset( $array_keys );
		}

	}

	/**
	 * Returns the the view_id context when page contains multiple embedded views or displaying single entry view
	 *
	 * @since 1.5.4
	 *
	 * @return string
	 */
	public function get_context_view_id() {
		return $this->context_view_id;
	}

	/**
	 * Allow GravityView entry endpoints on the front page of a site
	 *
	 * @link  https://core.trac.wordpress.org/ticket/23867 Fixes this core issue
	 * @link https://wordpress.org/plugins/cpt-on-front-page/ Code is based on this
	 *
	 * @since 1.17.3
	 *
	 * @param WP_Query &$query (passed by reference)
	 *
	 * @return void
	 */
	public function parse_query_fix_frontpage( &$query ) {
		global $wp_rewrite;

Use of global functionality is not recommended; it makes your code harder to test, and less reusable.

		$is_front_page = ( $query->is_home || $query->is_page );
		$show_on_front = ( 'page' === get_option('show_on_front') );

Expected 1 spaces after opening bracket; 0 found

Expected 1 spaces before closing bracket; 0 found

		$front_page_id = get_option('page_on_front');

Expected 1 spaces after opening bracket; 0 found

Expected 1 spaces before closing bracket; 0 found

		if (  $is_front_page && $show_on_front && $front_page_id ) {

			// Force to be an array, potentially a query string ( entry=16 )
			$_query = wp_parse_args( $query->query );

			// pagename can be set and empty depending on matched rewrite rules. Ignore an empty pagename.
			if ( isset( $_query['pagename'] ) && '' === $_query['pagename'] ) {
				unset( $_query['pagename'] );
			}

			// this is where will break from core wordpress
			$ignore = array( 'preview', 'page', 'paged', 'cpage' );
			$endpoints = rgobj( $wp_rewrite, 'endpoints' );
			foreach ( (array) $endpoints as $endpoint ) {
				$ignore[] = $endpoint[1];
			}
			unset( $endpoints );

			// Modify the query if:
			// - We're on the "Page on front" page (which we are), and:
			// - The query is empty OR
			// - The query includes keys that are associated with registered endpoints. `entry`, for example.
			if ( empty( $_query ) || ! array_diff( array_keys( $_query ), $ignore ) ) {

				$qv =& $query->query_vars;

				// Prevent redirect when on the single entry endpoint
				if( self::is_single_entry() ) {
					add_filter( 'redirect_canonical', '__return_false' );
				}

				$query->is_page = true;
				$query->is_home = false;
				$qv['page_id']  = $front_page_id;

				// Correct <!--nextpage--> for page_on_front
				if ( ! empty( $qv['paged'] ) ) {
					$qv['page'] = $qv['paged'];
					unset( $qv['paged'] );
				}
			}

			// reset the is_singular flag after our updated code above
			$query->is_singular = $query->is_single || $query->is_page || $query->is_attachment;
		}
	}

	/**
	 * Read the $post and process the View data inside
	 * @param  array  $wp Passed in the `wp` hook. Not used.
	 * @return void
	 */
	public function parse_content( $wp = array() ) {

The parameter $wp is not used and could be removed.

		global $post;

Use of global functionality is not recommended; it makes your code harder to test, and less reusable.

		// If in admin and NOT AJAX request, get outta here.
		if ( GravityView_Plugin::is_admin() )  {
			return;
		}

		// Calculate requested Views
		$this->setGvOutputData( GravityView_View_Data::getInstance( $post ) );

		// !important: we need to run this before getting single entry (to kick the advanced filter)
		$this->set_context_view_id();

		$this->setIsGravityviewPostType( get_post_type( $post ) === 'gravityview' );

		$post_id = $this->getPostId() ? $this->getPostId() : (isset( $post ) ? $post->ID : null );
		$this->setPostId( $post_id );
		$post_has_shortcode = ! empty( $post->post_content ) ? gravityview_has_shortcode_r( $post->post_content, 'gravityview' ) : false;
		$this->setPostHasShortcode( $this->isGravityviewPostType() ? null : ! empty( $post_has_shortcode ) );

		// check if the View is showing search results (only for multiple entries View)
		$this->setIsSearch( $this->is_searching() );

		unset( $entry, $post_id, $post_has_shortcode );
	}

	/**
	 * Set the entry
	 */
	function set_entry_data() {

It is generally recommended to explicitly declare the visibility for methods.

		$entry_id = self::is_single_entry();
		$this->setSingleEntry( $entry_id );
		$this->setEntry( $entry_id );
	}

	/**
	 * Checks if the current View is presenting search results
	 *
	 * @since 1.5.4
	 *
	 * @return boolean True: Yes, it's a search; False: No, not a search.
	 */
	function is_searching() {

It is generally recommended to explicitly declare the visibility for methods.

		// It's a single entry, not search
		if ( $this->getSingleEntry() ) {
			return false;
		}

		$search_method = GravityView_Widget_Search::getInstance()->get_search_method();

		if( 'post' === $search_method ) {
			$get = $_POST;

Detected access of super global var $_POST, probably need manual inspection.

Detected usage of a non-sanitized input variable: $_POST

		} else {
			$get = $_GET;

Detected access of super global var $_GET, probably need manual inspection.

Detected usage of a non-sanitized input variable: $_GET

		}

		// No $_GET parameters
		if ( empty( $get ) || ! is_array( $get ) ) {
			return false;
		}

		// Remove empty values
		$get = array_filter( $get );

		// If the $_GET parameters are empty, it's no search.
		if ( empty( $get ) ) {
			return false;
		}

		$search_keys = array_keys( $get );

		$search_match = implode( '|', self::$search_parameters );

		foreach ( $search_keys as $search_key ) {

			// Analyze the search key $_GET parameter and see if it matches known GV args
			if ( preg_match( '/(' . $search_match . ')/i', $search_key ) ) {
				return true;
			}
		}

		return false;
	}

	/**
	 * Filter the title for the single entry view
	 *
	 * @param  string $title   current title
	 * @param  int $passed_post_id Post ID
	 * @return string          (modified) title
	 */
	public function single_entry_title( $title, $passed_post_id = null ) {
		global $post;

Use of global functionality is not recommended; it makes your code harder to test, and less reusable.

		// If this is the directory view, return.
		if ( ! $this->getSingleEntry() ) {
			return $title;
		}

		$entry = $this->getEntry();

		/**
		 * @filter `gravityview/single/title/out_loop` Apply the Single Entry Title filter outside the WordPress loop?
		 * @param boolean $in_the_loop Whether to apply the filter to the menu title and the meta tag <title> - outside the loop
		 * @param array $entry Current entry
		 */
		$apply_outside_loop = apply_filters( 'gravityview/single/title/out_loop' , in_the_loop(), $entry );

		if ( ! $apply_outside_loop ) {
			return $title;
		}

		// User reported WooCommerce doesn't pass two args.
		if ( empty( $passed_post_id ) )  {
			return $title;
		}

		// Don't modify the title for anything other than the current view/post.
		// This is true for embedded shortcodes and Views.
		if ( is_object( $post ) && (int) $post->ID !== (int) $passed_post_id ) {
			return $title;
		}

		$context_view_id = $this->get_context_view_id();

		if ( $this->getGvOutputData()->has_multiple_views() && ! empty( $context_view_id ) ) {
			$view_meta = $this->getGvOutputData()->get_view( $context_view_id );
		} else {
			foreach ( $this->getGvOutputData()->get_views() as $view_id => $view_data ) {
				if ( intval( $view_data['form_id'] ) === intval( $entry['form_id'] ) ) {
					$view_meta = $view_data;
					break;
				}
			}
		}

		if ( ! empty( $view_meta['atts']['single_title'] ) ) {

			$title = $view_meta['atts']['single_title'];

			// We are allowing HTML in the fields, so no escaping the output
			$title = GravityView_API::replace_variables( $title, $view_meta['form'], $entry );

			$title = do_shortcode( $title );
		}

		return $title;
	}


	/**
	 * In case View post is called directly, insert the view in the post content
	 *
	 * @access public
	 * @static
	 * @param mixed $content
	 * @return string Add the View output into View CPT content
	 */
	public function insert_view_in_content( $content ) {

		// Plugins may run through the content in the header. WP SEO does this for its OpenGraph functionality.
		if ( ! did_action( 'loop_start' ) ) {

			do_action( 'gravityview_log_debug', '[insert_view_in_content] Not processing yet: loop_start hasn\'t run yet. Current action:', current_filter() );

			return $content;
		}

		//	We don't want this filter to run infinite loop on any post content fields
		remove_filter( 'the_content', array( $this, 'insert_view_in_content' ) );

		// Otherwise, this is called on the Views page when in Excerpt mode.
		if ( is_admin() ) {
			return $content;
		}

		if ( $this->isGravityviewPostType() ) {

			/** @since 1.7.4 */
			if ( is_preview() && ! gravityview_get_form_id( $this->post_id ) ) {
				$content .= __( 'When using a Start Fresh template, you must save the View before a Preview is available.', 'gravityview' );
			} else {
				foreach ( $this->getGvOutputData()->get_views() as $view_id => $data ) {
					$content .= $this->render_view( array( 'id' => $view_id ) );
				}
			}
		}

		//	Add the filter back in
		add_filter( 'the_content', array( $this, 'insert_view_in_content' ) );

		return $content;
	}

	/**
	 * Disable comments on GravityView post types
	 * @param  boolean $open    existing status
	 * @param  int $post_id Post ID
	 * @return boolean
	 */
	public function comments_open( $open, $post_id ) {

		if ( $this->isGravityviewPostType() ) {
			$open = false;
		}

		/**
		 * @filter `gravityview/comments_open` Whether to set comments to open or closed.
		 * @since  1.5.4
		 * @param  boolean $open Open or closed status
		 * @param  int $post_id Post ID to set comment status for
		 */
		$open = apply_filters( 'gravityview/comments_open', $open, $post_id );

		return $open;
	}

	/**
	 * Display a warning when a View has not been configured
	 *
	 * @since 1.19.2
	 *
	 * @param string $context The current context that has no configuration

There is no parameter named $context. Was it maybe removed?

	 *
	 * @return void
	 */
	public function context_not_configured_warning( $view_id = 0 ) {

		$fields = GravityView_View::getInstance()->getContextFields();

		if ( ! empty( $fields ) ) {
			return;
		}

		$context = GravityView_View::getInstance()->getContext();

		switch( $context ) {
			case 'directory':
				$tab = __( 'Multiple Entries', 'gravityview' );
				break;
			case 'edit':
				$tab = __( 'Edit Entry', 'gravityview' );
				break;
			case 'single':
			default:
				$tab = __( 'Single Entry', 'gravityview' );
				break;
		}

Functions must not contain multiple empty lines in a row; found 2 empty lines

		$title = sprintf( esc_html_x('The %s layout has not been configured.', 'Displayed when a View is not configured. %s is replaced by the tab label', 'gravityview' ), $tab );

Expected 1 spaces after opening bracket; 0 found

		$edit_link = admin_url( sprintf( 'post.php?post=%d&action=edit#%s-view', $view_id, $context ) );
		$action_text = sprintf( esc_html__('Add fields to %s', 'gravityview' ), $tab );

Expected 1 spaces after opening bracket; 0 found

		$message = esc_html__( 'You can only see this message because you are able to edit this View.', 'gravityview' );

		$output = sprintf( '<h3>%s <strong><a href="%s">%s</a></strong></h3><p>%s</p>', $title, esc_url( $edit_link ), $action_text, $message );

		echo GVCommon::generate_notice( $output, 'gv-error error', 'edit_gravityview', $view_id );

Expected a sanitizing function (see Codex for 'Data Validation'), but instead saw 'GVCommon'

	}


	/**
	 * Core function to render a View based on a set of arguments
	 *
	 * @access public
	 * @static
	 * @param array $passed_args {
	 *
	 *      Settings for rendering the View
	 *
	 *      @type int $id View id
	 *      @type int $page_size Number of entries to show per page
	 *      @type string $sort_field Form field id to sort
	 *      @type string $sort_direction Sorting direction ('ASC' or 'DESC')
	 *      @type string $start_date - Ymd
	 *      @type string $end_date - Ymd
	 *      @type string $class - assign a html class to the view
	 *      @type string $offset (optional) - This is the start point in the current data set (0 index based).
	 * }
	 *
	 * @return string|null HTML output of a View, NULL if View isn't found
	 */
	public function render_view( $passed_args ) {

		// validate attributes
		if ( empty( $passed_args['id'] ) ) {
			do_action( 'gravityview_log_error', '[render_view] Returning; no ID defined.', $passed_args );
			return null;
		}

		// Solve problem when loading content via admin-ajax.php
		// @hack
		if ( ! $this->getGvOutputData() ) {

			do_action( 'gravityview_log_error', '[render_view] gv_output_data not defined; parsing content.', $passed_args );

			$this->parse_content();
		}

		// Make 100% sure that we're dealing with a properly called situation
		if ( ! is_object( $this->getGvOutputData() ) || ! is_callable( array( $this->getGvOutputData(), 'get_view' ) ) ) {

			do_action( 'gravityview_log_error', '[render_view] gv_output_data not an object or get_view not callable.', $this->getGvOutputData() );

			return null;
		}

		$view_id = $passed_args['id'];

		$view_data = $this->getGvOutputData()->get_view( $view_id, $passed_args );

		do_action( 'gravityview_log_debug', '[render_view] View Data: ', $view_data );

		do_action( 'gravityview_log_debug', '[render_view] Init View. Arguments: ', $passed_args );

		// The passed args were always winning, even if they were NULL.
		// This prevents that. Filters NULL, FALSE, and empty strings.
		$passed_args = array_filter( $passed_args, 'strlen' );

		//Override shortcode args over View template settings
		$atts = wp_parse_args( $passed_args, $view_data['atts'] );

		do_action( 'gravityview_log_debug', '[render_view] Arguments after merging with View settings: ', $atts );

		// It's password protected and you need to log in.
		if ( post_password_required( $view_id ) ) {

			do_action( 'gravityview_log_error', sprintf( '[render_view] Returning: View %d is password protected.', $view_id ) );

			// If we're in an embed or on an archive page, show the password form
			if ( get_the_ID() !== $view_id ) {
				return get_the_password_form();
			}

			// Otherwise, just get outta here
			return null;
		}

		/**
		 * Don't render View if user isn't allowed to see it
		 * @since 1.15
		 * @since 1.17.2 Added check for if a user has no caps but is logged in (member of multisite, but not any site). Treat as if logged-out.
		 */
		if( is_user_logged_in() && ! ( empty( wp_get_current_user()->caps ) && empty( wp_get_current_user()->roles ) ) && false === GVCommon::has_cap( 'read_gravityview', $view_id ) ) {

			do_action( 'gravityview_log_debug', sprintf( '%s Returning: View %d is not visible by current user.', __METHOD__, $view_id ) );

			return null;
		}

		if( $this->isGravityviewPostType() ) {

			/**
			 * @filter `gravityview_direct_access` Should Views be directly accessible, or only visible using the shortcode?
			 * @see https://codex.wordpress.org/Function_Reference/register_post_type#public
			 * @see GravityView_Post_Types::init_post_types
			 * @since 1.15.2
			 * @param[in,out] boolean `true`: allow Views to be accessible directly. `false`: Only allow Views to be embedded via shortcode. Default: `true`
			 * @param int $view_id The ID of the View currently being requested. `0` for general setting
			 */
			$direct_access = apply_filters( 'gravityview_direct_access', true, $view_id );

			$embed_only = ! empty( $atts['embed_only'] );

			if( ! $direct_access || ( $embed_only && ! GVCommon::has_cap( 'read_private_gravityviews' ) ) ) {
				return __( 'You are not allowed to view this content.', 'gravityview' );
			}
		}

		ob_start();

		/**
		 * Set globals for templating
		 * @deprecated 1.6.2
		 */
		global $gravityview_view;

Use of global functionality is not recommended; it makes your code harder to test, and less reusable.

		$gravityview_view = new GravityView_View( $view_data );

		$post_id = ! empty( $atts['post_id'] ) ? intval( $atts['post_id'] ) : $this->getPostId();

		$gravityview_view->setPostId( $post_id );

		if ( ! $this->getSingleEntry() ) {

			// user requested Directory View
			do_action( 'gravityview_log_debug', '[render_view] Executing Directory View' );

			//fetch template and slug
			$view_slug = apply_filters( 'gravityview_template_slug_'. $view_data['template_id'], 'table', 'directory' );

			do_action( 'gravityview_log_debug', '[render_view] View template slug: ', $view_slug );

			/**
			 * Disable fetching initial entries for views that don't need it (DataTables)
			 */
			$get_entries = apply_filters( 'gravityview_get_view_entries_'.$view_slug, true );

			/**
			 * Hide View data until search is performed
			 * @since 1.5.4
			 */
			if ( ! empty( $atts['hide_until_searched'] ) && ! $this->isSearch() ) {
				$gravityview_view->setHideUntilSearched( true );
				$get_entries = false;
			}

Functions must not contain multiple empty lines in a row; found 2 empty lines

			if ( $get_entries ) {

				if ( ! empty( $atts['sort_columns'] ) ) {
					// add filter to enable column sorting
					add_filter( 'gravityview/template/field_label', array( $this, 'add_columns_sort_links' ) , 100, 3 );
				}

				$view_entries = self::get_view_entries( $atts, $view_data['form_id'] );

				do_action( 'gravityview_log_debug', sprintf( '[render_view] Get Entries. Found %s entries total, showing %d entries', $view_entries['count'], sizeof( $view_entries['entries'] ) ) );

			} else {

				$view_entries = array( 'count' => null, 'entries' => null, 'paging' => null );

				do_action( 'gravityview_log_debug', '[render_view] Not fetching entries because `gravityview_get_view_entries_'.$view_slug.'` is false' );
			}

			$gravityview_view->setPaging( $view_entries['paging'] );
			$gravityview_view->setContext( 'directory' );
			$sections = array( 'header', 'body', 'footer' );

		} else {

			// user requested Single Entry View
			do_action( 'gravityview_log_debug', '[render_view] Executing Single View' );

Functions must not contain multiple empty lines in a row; found 2 empty lines

			/**
			 * @action `gravityview_render_entry_{View ID}` Before rendering a single entry for a specific View ID
			 * @since 1.17
			 */
			do_action( 'gravityview_render_entry_'.$view_data['id'] );

			$entry = $this->getEntry();

			// You are not permitted to view this entry.
			if ( empty( $entry ) || ! self::is_entry_approved( $entry, $atts ) ) {

				do_action( 'gravityview_log_debug', '[render_view] Entry does not exist. This may be because of View filters limiting access.' );

				/**
				 * @filter `gravityview/render/entry/not_visible` Modify the message shown to users when the entry doesn't exist or they aren't allowed to view it.
				 * @since 1.6
				 * @param string $message Default: "You have attempted to view an entry that is not visible or may not exist."
				 */
				$message = apply_filters( 'gravityview/render/entry/not_visible', __( 'You have attempted to view an entry that is not visible or may not exist.', 'gravityview' ) );

				/**
				 * @since 1.6
				 */
				echo esc_attr( $message );

				return null;
			}

			// We're in single view, but the view being processed is not the same view the single entry belongs to.
			// important: do not remove this as it prevents fake attempts of displaying entries from other views/forms
			if ( $this->getGvOutputData()->has_multiple_views() && $view_id != $this->get_context_view_id() ) {
				do_action( 'gravityview_log_debug', '[render_view] In single entry view, but the entry does not belong to this View. Perhaps there are multiple views on the page. View ID: '. $view_id );
				return null;
			}

			//fetch template and slug
			$view_slug = apply_filters( 'gravityview_template_slug_' . $view_data['template_id'], 'table', 'single' );
			do_action( 'gravityview_log_debug', '[render_view] View single template slug: ', $view_slug );

			//fetch entry detail
			$view_entries['count'] = 1;

$view_entries was never initialized. Although not strictly required by PHP, it is generally a good practice to add $view_entries = array(); before regardless.

			$view_entries['entries'][] = $entry;
			do_action( 'gravityview_log_debug', '[render_view] Get single entry: ', $view_entries['entries'] );

			$back_link_label = isset( $atts['back_link_label'] ) ? $atts['back_link_label'] : null;

			// set back link label
			$gravityview_view->setBackLinkLabel( $back_link_label );
			$gravityview_view->setContext( 'single' );
			$sections = array( 'single' );

		}

		// add template style
		self::add_style( $view_data['template_id'] );

		// Prepare to render view and set vars
		$gravityview_view->setEntries( $view_entries['entries'] );
		$gravityview_view->setTotalEntries( $view_entries['count'] );

		// If Edit
		if ( 'edit' === gravityview_get_context() ) {

			do_action( 'gravityview_log_debug', '[render_view] Edit Entry ' );

			do_action( 'gravityview_edit_entry', $this->getGvOutputData() );

			return ob_get_clean();

		} else {
			// finaly we'll render some html
			$sections = apply_filters( 'gravityview_render_view_sections', $sections, $view_data['template_id'] );

			do_action( 'gravityview_log_debug', '[render_view] Sections to render: ', $sections );
			foreach ( $sections as $section ) {
				do_action( 'gravityview_log_debug', '[render_view] Rendering '. $section . ' section.' );
				$gravityview_view->render( $view_slug, $section, false );
			}
		}

		//@todo: check why we need the IF statement vs. print the view id always.
		if ( $this->isGravityviewPostType() || $this->isPostHasShortcode() ) {
			// Print the View ID to enable proper cookie pagination
			echo '<input type="hidden" class="gravityview-view-id" value="' . esc_attr( $view_id ) . '">';
		}
		$output = ob_get_clean();

		return $output;
	}

	/**
	 * Process the start and end dates for a view - overrides values defined in shortcode (if needed)
	 *
	 * The `start_date` and `end_date` keys need to be in a format processable by GFFormsModel::get_date_range_where(),
	 * which uses \DateTime() format.
	 *
	 * You can set the `start_date` or `end_date` to any value allowed by {@link http://www.php.net//manual/en/function.strtotime.php strtotime()},
	 * including strings like "now" or "-1 year" or "-3 days".
	 *
	 * @see GFFormsModel::get_date_range_where
	 *
	 * @param  array      $args            View settings
	 * @param  array      $search_criteria Search being performed, if any
	 * @return array                       Modified `$search_criteria` array
	 */
	public static function process_search_dates( $args, $search_criteria = array() ) {

		$return_search_criteria = $search_criteria;

		foreach ( array( 'start_date', 'end_date' ) as $key ) {

Functions must not contain multiple empty lines in a row; found 2 empty lines

			// Is the start date or end date set in the view or shortcode?
			// If so, we want to make sure that the search doesn't go outside the bounds defined.
			if ( ! empty( $args[ $key ] ) ) {

				// Get a timestamp and see if it's a valid date format
				$date = strtotime( $args[ $key ] );

				// The date was invalid
				if ( empty( $date ) ) {
					do_action( 'gravityview_log_error', __METHOD__ . ' Invalid ' . $key . ' date format: ' . $args[ $key ] );
					continue;
				}

				// The format that Gravity Forms expects for start_date and day-specific (not hour/second-specific) end_date
				$datetime_format = 'Y-m-d H:i:s';
				$search_is_outside_view_bounds = false;

				if( ! empty( $search_criteria[ $key ] ) ) {

					$search_date = strtotime( $search_criteria[ $key ] );

					// The search is for entries before the start date defined by the settings
					switch ( $key ) {
						case 'end_date':
							/**
							 * If the end date is formatted as 'Y-m-d', it should be formatted without hours and seconds
							 * so that Gravity Forms can convert the day to 23:59:59 the previous day.
							 *
							 * If it's a relative date ("now" or "-1 day"), then it should use the precise date format
							 *
							 * @see GFFormsModel::get_date_range_where
							 */
							$datetime_format               = gravityview_is_valid_datetime( $args[ $key ] ) ? 'Y-m-d' : 'Y-m-d H:i:s';
							$search_is_outside_view_bounds = ( $search_date > $date );
							break;
						case 'start_date':
							$search_is_outside_view_bounds = ( $search_date < $date );
							break;
					}
				}

				// If there is no search being performed, or if there is a search being performed that's outside the bounds
				if ( empty( $search_criteria[ $key ] ) || $search_is_outside_view_bounds ) {

					// Then we override the search and re-set the start date
					$return_search_criteria[ $key ] = date_i18n( $datetime_format , $date, true );
				}
			}
		}

		if( isset( $return_search_criteria['start_date'] ) && isset( $return_search_criteria['end_date'] ) ) {
			// The start date is AFTER the end date. This will result in no results, but let's not force the issue.
			if ( strtotime( $return_search_criteria['start_date'] ) > strtotime( $return_search_criteria['end_date'] ) ) {
				do_action( 'gravityview_log_error', __METHOD__ . ' Invalid search: the start date is after the end date.', $return_search_criteria );
			}
		}

		return $return_search_criteria;
	}


	/**
	 * Process the approved only search criteria according to the View settings
	 *
	 * @param  array      $args            View settings
	 * @param  array      $search_criteria Search being performed, if any
	 * @return array                       Modified `$search_criteria` array
	 */
	public static function process_search_only_approved( $args, $search_criteria ) {

		/** @since 1.19 */
		if( ! empty( $args['admin_show_all_statuses'] ) && GVCommon::has_cap('gravityview_moderate_entries') ) {

Expected 1 spaces after opening bracket; 0 found

Expected 1 spaces before closing bracket; 0 found

			do_action( 'gravityview_log_debug', __METHOD__ . ': User can moderate entries; showing all approval statuses' );
			return $search_criteria;
		}

		if ( ! empty( $args['show_only_approved'] ) ) {

			$search_criteria['field_filters'][] = array(
				'key' => GravityView_Entry_Approval::meta_key,
				'value' => GravityView_Entry_Approval_Status::APPROVED

Each line in an array declaration must end in a comma

			);

			$search_criteria['field_filters']['mode'] = 'all'; // force all the criterias to be met

			do_action( 'gravityview_log_debug', '[process_search_only_approved] Search Criteria if show only approved: ', $search_criteria );
		}

		return $search_criteria;
	}


	/**
	 * Check if a certain entry is approved.
	 *
	 * If we pass the View settings ($args) it will check the 'show_only_approved' setting before
	 *   checking the entry approved field, returning true if show_only_approved = false.
	 *
	 * @since 1.7
	 * @since 1.18 Converted check to use GravityView_Entry_Approval_Status::is_approved
	 *
	 * @uses GravityView_Entry_Approval_Status::is_approved
	 *
	 * @param array $entry  Entry object
	 * @param array $args   View settings (optional)
	 *
	 * @return bool
	 */
	public static function is_entry_approved( $entry, $args = array() ) {

		if ( empty( $entry['id'] ) || ( array_key_exists( 'show_only_approved', $args ) && ! $args['show_only_approved'] ) ) {
			// is implicitly approved if entry is null or View settings doesn't require to check for approval
			return true;
		}

		/** @since 1.19 */
		if( ! empty( $args['admin_show_all_statuses'] ) && GVCommon::has_cap('gravityview_moderate_entries') ) {

Expected 1 spaces after opening bracket; 0 found

Expected 1 spaces before closing bracket; 0 found

			do_action( 'gravityview_log_debug', __METHOD__ . ': User can moderate entries, so entry is approved for viewing' );
			return true;
		}

		$is_approved = gform_get_meta( $entry['id'], GravityView_Entry_Approval::meta_key );

		return GravityView_Entry_Approval_Status::is_approved( $is_approved );
	}

	/**
	 * Parse search criteria for a entries search.
	 *
	 * array(
	 * 	'search_field' => 1, // ID of the field
	 *  'search_value' => '', // Value of the field to search
	 *  'search_operator' => 'contains', // 'is', 'isnot', '>', '<', 'contains'
	 *  'show_only_approved' => 0 or 1 // Boolean
	 * )
	 *
	 * @param  array $args    Array of args
	 * @param  int $form_id Gravity Forms form ID
	 * @return array          Array of search parameters, formatted in Gravity Forms mode, using `status` key set to "active" by default, `field_filters` array with `key`, `value` and `operator` keys.
	 */
	public static function get_search_criteria( $args, $form_id ) {

		/**
		 * @filter `gravityview_fe_search_criteria` Modify the search criteria
		 * @see GravityView_Widget_Search::filter_entries Adds the default search criteria
		 * @param array $search_criteria Empty `field_filters` key
		 * @param int $form_id ID of the Gravity Forms form that is being searched
		 */
		$search_criteria = apply_filters( 'gravityview_fe_search_criteria', array( 'field_filters' => array() ), $form_id );

		$original_search_criteria = $search_criteria;

		do_action( 'gravityview_log_debug', '[get_search_criteria] Search Criteria after hook gravityview_fe_search_criteria: ', $search_criteria );

		// implicity search
		if ( ! empty( $args['search_value'] ) ) {

			// Search operator options. Options: `is` or `contains`
			$operator = ! empty( $args['search_operator'] ) && in_array( $args['search_operator'], array( 'is', 'isnot', '>', '<', 'contains' ) ) ? $args['search_operator'] : 'contains';

			$search_criteria['field_filters'][] = array(
				'key' => rgget( 'search_field', $args ), // The field ID to search
				'value' => _wp_specialchars( $args['search_value'] ), // The value to search. Encode ampersands but not quotes.
				'operator' => $operator,
			);
		}

		if( $search_criteria !== $original_search_criteria ) {
			do_action( 'gravityview_log_debug', '[get_search_criteria] Search Criteria after implicity search: ', $search_criteria );
		}

		// Handle setting date range
		$search_criteria = self::process_search_dates( $args, $search_criteria );

		if( $search_criteria !== $original_search_criteria ) {
			do_action( 'gravityview_log_debug', '[get_search_criteria] Search Criteria after date params: ', $search_criteria );
		}

		// remove not approved entries
		$search_criteria = self::process_search_only_approved( $args, $search_criteria );

		/**
		 * @filter `gravityview_status` Modify entry status requirements to be included in search results.
		 * @param string $status Default: `active`. Accepts all Gravity Forms entry statuses, including `spam` and `trash`
		 */
		$search_criteria['status'] = apply_filters( 'gravityview_status', 'active', $args );

		return $search_criteria;
	}



	/**
	 * Core function to calculate View multi entries (directory) based on a set of arguments ($args):
	 *   $id - View id
	 *   $page_size - Page
	 *   $sort_field - form field id to sort
	 *   $sort_direction - ASC / DESC
	 *   $start_date - Ymd
	 *   $end_date - Ymd
	 *   $class - assign a html class to the view
	 *   $offset (optional) - This is the start point in the current data set (0 index based).
	 *
	 *
	 *
	 * @uses  gravityview_get_entries()
	 * @access public
	 * @param array $args\n

There is no parameter named $args\n. Was it maybe removed?

	 *   - $id - View id
	 *   - $page_size - Page
	 *   - $sort_field - form field id to sort
	 *   - $sort_direction - ASC / DESC
	 *   - $start_date - Ymd
	 *   - $end_date - Ymd
	 *   - $class - assign a html class to the view
	 *   - $offset (optional) - This is the start point in the current data set (0 index based).
	 * @param int $form_id Gravity Forms Form ID
	 * @return array Associative array with `count`, `entries`, and `paging` keys. `count` has the total entries count, `entries` is an array with Gravity Forms full entry data, `paging` is an array with `offset` and `page_size` keys
	 */
	public static function get_view_entries( $args, $form_id ) {

		do_action( 'gravityview_log_debug', '[get_view_entries] init' );
		// start filters and sorting

		/**
		 * Process search parameters
		 * @var array
		 */
		$search_criteria = self::get_search_criteria( $args, $form_id );

		// Paging & offset
		$page_size = ! empty( $args['page_size'] ) ? intval( $args['page_size'] ) : apply_filters( 'gravityview_default_page_size', 25 );

		if ( -1 === $page_size ) {
			$page_size = PHP_INT_MAX;
		}

		if ( isset( $args['offset'] ) ) {
			$offset = intval( $args['offset'] );
		} else {
			$curr_page = empty( $_GET['pagenum'] ) ? 1 : intval( $_GET['pagenum'] );

Detected access of super global var $_GET, probably need manual inspection.

			$offset = ( $curr_page - 1 ) * $page_size;
		}

		$paging = array(
			'offset' => $offset,
			'page_size' => $page_size,
		);

		do_action( 'gravityview_log_debug', __METHOD__ . ': Paging: ', $paging );

		// Sorting
		$sorting = self::updateViewSorting( $args, $form_id );

		$parameters = array(
			'search_criteria' => $search_criteria,
			'sorting' => $sorting,
			'paging' => $paging,
			'cache' => isset( $args['cache'] ) ? $args['cache'] : true,
		);

		/**
		 * @filter `gravityview_get_entries` Filter get entries criteria
		 * @param array $parameters Array with `search_criteria`, `sorting` and `paging` keys.
		 * @param array $args View configuration args. {
		 *      @type int $id View id
		 *      @type int $page_size Number of entries to show per page
		 *      @type string $sort_field Form field id to sort
		 *      @type string $sort_direction Sorting direction ('ASC' or 'DESC')
		 *      @type string $start_date - Ymd
		 *      @type string $end_date - Ymd
		 *      @type string $class - assign a html class to the view
		 *      @type string $offset (optional) - This is the start point in the current data set (0 index based).
		 * }
		 * @param int $form_id ID of Gravity Forms form
		 */
		$parameters = apply_filters( 'gravityview_get_entries', $parameters, $args, $form_id );

		/**
		 * @filter `gravityview_get_entries_{View ID}` Filter get entries criteria
		 * @param array $parameters Array with `search_criteria`, `sorting` and `paging` keys.
		 * @param array $args View configuration args.
		 */
		$parameters = apply_filters( 'gravityview_get_entries_'.$args['id'], $parameters, $args, $form_id );

		do_action( 'gravityview_log_debug', __METHOD__ . ': $parameters passed to gravityview_get_entries(): ', $parameters );

		//fetch entries
		$count = 0;
		$entries = gravityview_get_entries( $form_id, $parameters, $count );

		do_action( 'gravityview_log_debug', sprintf( '%s: Get Entries. Found: %s entries', __METHOD__, $count ), $entries );

		/**
		 * @filter `gravityview_view_entries` Filter the entries output to the View
		 * @deprecated since 1.5.2
		 * @param array $args View settings associative array
		 * @var array
		 */
		$entries = apply_filters( 'gravityview_view_entries', $entries, $args );

		/**
		 * @filter `gravityview/view/entries` Filter the entries output to the View
		 * @param array $criteria associative array containing count, entries & paging
		 * @param array $args View settings associative array
		 * @since 1.5.2
		 */
		return apply_filters( 'gravityview/view/entries', compact( 'count', 'entries', 'paging' ), $args );

	}


	/**
	 * Updates the View sorting criteria
	 *
	 * @since 1.7
	 *
	 * @param array $args View settings. Required to have `sort_field` and `sort_direction` keys
	 * @param int $form_id The ID of the form used to sort
	 * @return array $sorting Array with `key`, `direction` and `is_numeric` keys
	 */
	public static function updateViewSorting( $args, $form_id ) {

The function name updateViewSorting is in camel caps, but expected update_view_sorting instead as per the coding standard.

		$sorting = array();
		$sort_field_id = isset( $_GET['sort'] ) ? $_GET['sort'] : rgar( $args, 'sort_field' );

Detected access of super global var $_GET, probably need manual inspection.

Detected usage of a non-sanitized input variable: $_GET

		$sort_direction = isset( $_GET['dir'] ) ? $_GET['dir'] : rgar( $args, 'sort_direction' );

Detected access of super global var $_GET, probably need manual inspection.

Detected usage of a non-sanitized input variable: $_GET

		$sort_field_id = self::_override_sorting_id_by_field_type( $sort_field_id, $form_id );

		if ( ! empty( $sort_field_id ) ) {
			$sorting = array(
				'key' => $sort_field_id,
				'direction' => strtolower( $sort_direction ),
				'is_numeric' => GVCommon::is_field_numeric( $form_id, $sort_field_id )
			);
		}

		GravityView_View::getInstance()->setSorting( $sorting );

		do_action( 'gravityview_log_debug', '[updateViewSorting] Sort Criteria : ', $sorting );

		return $sorting;

	}

	/**
	 * Override sorting per field
	 *
	 * Currently only modifies sorting ID when sorting by the full name. Sorts by first name.
	 * Use the `gravityview/sorting/full-name` filter to override.
	 *
	 * @todo Filter from GravityView_Field
	 * @since 1.7.4
	 *
	 * @param int|string $sort_field_id Field used for sorting (`id` or `1.2`)
	 * @param int $form_id GF Form ID
	 *
	 * @return string Possibly modified sorting ID
	 */
	private static function _override_sorting_id_by_field_type( $sort_field_id, $form_id ) {

		$form = gravityview_get_form( $form_id );

		$sort_field = GFFormsModel::get_field( $form, $sort_field_id );

		if( ! $sort_field ) {
			return $sort_field_id;
		}

		switch ( $sort_field['type'] ) {

			case 'address':
				// Sorting by full address
				if ( floatval( $sort_field_id ) === floor( $sort_field_id ) ) {

					/**
					 * Override how to sort when sorting address
					 *
					 * @since 1.8
					 *
					 * @param string $address_part `street`, `street2`, `city`, `state`, `zip`, or `country` (default: `city`)
					 * @param string $sort_field_id Field used for sorting
					 * @param int $form_id GF Form ID
					 */
					$address_part = apply_filters( 'gravityview/sorting/address', 'city', $sort_field_id, $form_id );

					switch( strtolower( $address_part ) ){
						case 'street':
							$sort_field_id .= '.1';
							break;
						case 'street2':
							$sort_field_id .= '.2';
							break;
						default:
						case 'city':

case 'city': $sort_field_id .= '.3'; break; does not seem to be reachable.

							$sort_field_id .= '.3';
							break;
						case 'state':
							$sort_field_id .= '.4';
							break;
						case 'zip':
							$sort_field_id .= '.5';
							break;
						case 'country':
							$sort_field_id .= '.6';
							break;
					}

				}
				break;
			case 'name':
				// Sorting by full name, not first, last, etc.
				if ( floatval( $sort_field_id ) === floor( $sort_field_id ) ) {
					/**
					 * @filter `gravityview/sorting/full-name` Override how to sort when sorting full name.
					 * @since 1.7.4
					 * @param[in,out] string $name_part Sort by `first` or `last` (default: `first`)
					 * @param[in] string $sort_field_id Field used for sorting
					 * @param[in] int $form_id GF Form ID
					 */
					$name_part = apply_filters( 'gravityview/sorting/full-name', 'first', $sort_field_id, $form_id );

					if ( 'last' === strtolower( $name_part ) ) {
						$sort_field_id .= '.6';
					} else {
						$sort_field_id .= '.3';
					}
				}
				break;
			case 'list':
				$sort_field_id = false;
				break;
			case 'time':

				/**
				 * @filter `gravityview/sorting/time` Override how to sort when sorting time
				 * @see GravityView_Field_Time
				 * @since 1.14
				 * @param[in,out] string $name_part Field used for sorting
				 * @param[in] int $form_id GF Form ID
				 */
				$sort_field_id = apply_filters( 'gravityview/sorting/time', $sort_field_id, $form_id );
				break;
		}

		return $sort_field_id;
	}

	/**
	 * Verify if user requested a single entry view
	 * @return boolean|string false if not, single entry slug if true
	 */
	public static function is_single_entry() {

		$var_name = GravityView_Post_Types::get_entry_var_name();

		$single_entry = get_query_var( $var_name );

		/**
		 * Modify the entry that is being displayed.
		 *
		 * @internal Should only be used by things like the oEmbed functionality.
		 * @since 1.6
		 */
		$single_entry = apply_filters( 'gravityview/is_single_entry', $single_entry );

		if ( empty( $single_entry ) ){
			return false;
		} else {
			return $single_entry;
		}
	}


	/**
	 * Register styles and scripts
	 *
	 * @access public
	 * @return void
	 */
	public function add_scripts_and_styles() {
		global $post, $posts;

Use of global functionality is not recommended; it makes your code harder to test, and less reusable.

		// enqueue template specific styles
		if ( $this->getGvOutputData() ) {

			$views = $this->getGvOutputData()->get_views();

			foreach ( $views as $view_id => $data ) {

				/**
				 * Don't enqueue the scripts or styles if it's not going to be displayed.
				 * @since 1.15
				 */
				if( is_user_logged_in() && false === GVCommon::has_cap( 'read_gravityview', $view_id ) ) {
					continue;
				}

				// By default, no thickbox
				$js_dependencies = array( 'jquery', 'gravityview-jquery-cookie' );
				$css_dependencies = array();

				// If the thickbox is enqueued, add dependencies
				if ( ! empty( $data['atts']['lightbox'] ) ) {

					/**
					 * @filter `gravity_view_lightbox_script` Override the lightbox script to enqueue. Default: `thickbox`
					 * @param string $script_slug If you want to use a different lightbox script, return the name of it here.
					 */
					$js_dependencies[] = apply_filters( 'gravity_view_lightbox_script', 'thickbox' );

					/**
					 * @filter `gravity_view_lightbox_style` Modify the lightbox CSS slug. Default: `thickbox`
					 * @param string $script_slug If you want to use a different lightbox script, return the name of its CSS file here.
					 */
					$css_dependencies[] = apply_filters( 'gravity_view_lightbox_style', 'thickbox' );
				}

				/**
				 * If the form has checkbox fields, enqueue dashicons
				 * @see https://github.com/katzwebservices/GravityView/issues/536
				 * @since 1.15
				 */
				if( gravityview_view_has_single_checkbox_or_radio( $data['form'], $data['fields'] ) ) {
					$css_dependencies[] = 'dashicons';
				}

				wp_register_script( 'gravityview-jquery-cookie', plugins_url( 'assets/lib/jquery.cookie/jquery.cookie.min.js', GRAVITYVIEW_FILE ), array( 'jquery' ), GravityView_Plugin::version, true );

				$script_debug = ( defined( 'SCRIPT_DEBUG' ) && SCRIPT_DEBUG ) ? '' : '.min';

				wp_register_script( 'gravityview-fe-view', plugins_url( 'assets/js/fe-views' . $script_debug . '.js', GRAVITYVIEW_FILE ), apply_filters( 'gravityview_js_dependencies', $js_dependencies ) , GravityView_Plugin::version, true );

				wp_enqueue_script( 'gravityview-fe-view' );

				if ( ! empty( $data['atts']['sort_columns'] ) ) {
					wp_enqueue_style( 'gravityview_font', plugins_url( 'assets/css/font.css', GRAVITYVIEW_FILE ), $css_dependencies, GravityView_Plugin::version, 'all' );
				}

				$this->enqueue_default_style( $css_dependencies );

				self::add_style( $data['template_id'] );
			}

			if ( 'wp_print_footer_scripts' === current_filter() ) {

				$js_localization = array(
					'cookiepath' => COOKIEPATH,
					'clear' => _x( 'Clear', 'Clear all data from the form', 'gravityview' ),
					'reset' => _x( 'Reset', 'Reset the search form to the state that existed on page load', 'gravityview' ),
				);

				/**
				 * @filter `gravityview_js_localization` Modify the array passed to wp_localize_script()
				 * @param array $js_localization The data padded to the Javascript file
				 * @param array $views Array of View data arrays with View settings
				 */
				$js_localization = apply_filters( 'gravityview_js_localization', $js_localization, $views );

				wp_localize_script( 'gravityview-fe-view', 'gvGlobals', $js_localization );
			}
		}
	}

	/**
	 * Handle enqueuing the `gravityview_default_style` stylesheet
	 *
	 * @since 1.17
	 *
	 * @param array $css_dependencies Dependencies for the `gravityview_default_style` stylesheet
	 *
	 * @return void
	 */
	private function enqueue_default_style( $css_dependencies = array() ) {

		/**
		 * @filter `gravityview_use_legacy_search_css` Should GravityView use the legacy Search Bar stylesheet (from before Version 1.17)?
		 * @since 1.17
		 * @param bool $use_legacy_search_style If true, loads `gv-legacy-search(-rtl).css`. If false, loads `gv-default-styles(-rtl).css`. `-rtl` is added on RTL websites. Default: `false`
		 */
		$use_legacy_search_style = apply_filters( 'gravityview_use_legacy_search_style', false );

		$rtl = is_rtl() ? '-rtl' : '';

		$css_file_base = $use_legacy_search_style ? 'gv-legacy-search' : 'gv-default-styles';

		$path = gravityview_css_url( $css_file_base . $rtl . '.css' );

		wp_enqueue_style( 'gravityview_default_style', $path, $css_dependencies, GravityView_Plugin::version, 'all' );
	}

	/**
	 * Add template extra style if exists
	 * @param string $template_id
	 */
	public static function add_style( $template_id ) {

		if ( ! empty( $template_id ) && wp_style_is( 'gravityview_style_' . $template_id, 'registered' ) ) {
			do_action( 'gravityview_log_debug', sprintf( '[add_style] Adding extra template style for %s', $template_id ) );
			wp_enqueue_style( 'gravityview_style_' . $template_id );
		} elseif ( empty( $template_id ) ) {
			do_action( 'gravityview_log_error', '[add_style] Cannot add template style; template_id is empty' );
		} else {
			do_action( 'gravityview_log_error', sprintf( '[add_style] Cannot add template style; %s is not registered', 'gravityview_style_'.$template_id ) );
		}

	}


	/**
	 * Inject the sorting links on the table columns
	 *
	 * Callback function for hook 'gravityview/template/field_label'
	 * @see GravityView_API::field_label() (in includes/class-api.php)
	 *
	 * @since 1.7
	 *
	 * @param string $label Field label
	 * @param array $field Field settings
	 *
	 * @return string Field Label
	 */
	public function add_columns_sort_links( $label = '', $field, $form ) {

		/**
		 * Not a table-based template; don't add sort icons
		 * @since 1.12
		 */
		if( ! preg_match( '/table/ism', GravityView_View::getInstance()->getTemplatePartSlug() ) ) {
			return $label;
		}

		if ( ! $this->is_field_sortable( $field['id'], $form ) ) {
			return $label;
		}

		$sorting = GravityView_View::getInstance()->getSorting();

		$class = 'gv-sort';

		$sort_field_id = self::_override_sorting_id_by_field_type( $field['id'], $form['id'] );

		$sort_args = array(
			'sort' => $field['id'],
			'dir' => 'asc',
		);

		if ( ! empty( $sorting['key'] ) && (string) $sort_field_id === (string) $sorting['key'] ) {
			//toggle sorting direction.
			if ( 'asc' === $sorting['direction'] ) {
				$sort_args['dir'] = 'desc';
				$class .= ' gv-icon-sort-desc';
			} else {
				$sort_args['dir'] = 'asc';
				$class .= ' gv-icon-sort-asc';
			}
		} else {
			$class .= ' gv-icon-caret-up-down';
		}

		$url = add_query_arg( $sort_args, remove_query_arg( array('pagenum') ) );

No space after opening parenthesis of array is bad style

No space before closing parenthesis of array is bad style

		return '<a href="'. esc_url_raw( $url ) .'" class="'. $class .'" ></a>&nbsp;'. $label;

	}

	/**
	 * Checks if field (column) is sortable
	 *
	 * @param string $field Field settings

There is no parameter named $field. Was it maybe removed?

	 * @param array $form Gravity Forms form array
	 *
	 * @since 1.7
	 *
	 * @return bool True: Yes, field is sortable; False: not sortable
	 */
	public function is_field_sortable( $field_id = '', $form = array() ) {

		$field_type = $field_id;

		if( is_numeric( $field_id ) ) {
			$field = GFFormsModel::get_field( $form, $field_id );
			$field_type = $field->type;
		}

		$not_sortable = array(
			'edit_link',
			'delete_link',
		);

		/**
		 * @filter `gravityview/sortable/field_blacklist` Modify what fields should never be sortable.
		 * @since 1.7
		 * @param[in,out] array $not_sortable Array of field types that aren't sortable
		 * @param string $field_type Field type to check whether the field is sortable
		 * @param array $form Gravity Forms form
		 */
		$not_sortable = apply_filters( 'gravityview/sortable/field_blacklist', $not_sortable, $field_type, $form );

		if ( in_array( $field_type, $not_sortable ) ) {
			return false;
		}

		return apply_filters( "gravityview/sortable/formfield_{$form['id']}_{$field_id}", apply_filters( "gravityview/sortable/field_{$field_id}", true, $form ) );

	}

}

GravityView_frontend::getInstance();