Strategy11 / formidable-forms

classes/models/FrmStyle.php

Indentation +276 added lines, -276 removed lines

@@ -1,52 +1,52 @@ 
 <?php
 class FrmStyle {
-    public $number = false;	// Unique ID number of the current instance.
+	public $number = false;	// Unique ID number of the current instance.
 	public $id = 0; // the id of the post
 
 	/**
 	 * @param int|string $id The id of the stylsheet or 'default'
 	 */
 	public function __construct( $id = 0 ) {
-        $this->id = $id;
-    }
+		$this->id = $id;
+	}
 
-    public function get_new() {
+	public function get_new() {
 		$this->id = 0;
 
-        $max_slug_value = pow(36, 6);
-        $min_slug_value = 37; // we want to have at least 2 characters in the slug
-        $key = base_convert( rand($min_slug_value, $max_slug_value), 10, 36 );
-
-        $style = array(
-            'post_type'     => FrmStylesController::$post_type,
-            'ID'            => '',
-            'post_title'    => __( 'New Style', 'formidable' ),
-            'post_name'     => $key,
-            'post_content'  => $this->get_defaults(),
-            'menu_order'    => '',
-            'post_status'   => 'publish',
-        );
+		$max_slug_value = pow(36, 6);
+		$min_slug_value = 37; // we want to have at least 2 characters in the slug
+		$key = base_convert( rand($min_slug_value, $max_slug_value), 10, 36 );
+
+		$style = array(
+			'post_type'     => FrmStylesController::$post_type,
+			'ID'            => '',
+			'post_title'    => __( 'New Style', 'formidable' ),
+			'post_name'     => $key,
+			'post_content'  => $this->get_defaults(),
+			'menu_order'    => '',
+			'post_status'   => 'publish',
+		);
 
-        return (object) $style;
-    }
+		return (object) $style;
+	}
 
 	public function save( $settings ) {
 		return FrmAppHelper::save_settings( $settings, 'frm_styles' );
-    }
+	}
 
 	public function duplicate( $id ) {
-        // duplicating is a pro feature
-    }
+		// duplicating is a pro feature
+	}
 
-    public function update( $id = 'default' ) {
+	public function update( $id = 'default' ) {
  		$all_instances = $this->get_all();
 
  		if ( empty($id) ) {
- 		     $new_style = (array) $this->get_new();
- 		     $all_instances[] = $new_style;
+ 			 $new_style = (array) $this->get_new();
+ 			 $all_instances[] = $new_style;
  		}
 
-        $action_ids = array();
+		$action_ids = array();
 
  		foreach ( $all_instances as $number => $new_instance ) {
  			$new_instance = stripslashes_deep( (array) $new_instance);
@@ -54,42 +54,42 @@ 
  			if ( $id != $this->id || ! $_POST || ! isset($_POST['frm_style_setting']) ) {
 				$all_instances[ $number ] = $new_instance;
 
- 			    if ( $new_instance['menu_order'] && $_POST && empty($_POST['prev_menu_order']) && isset($_POST['frm_style_setting']['menu_order']) ) {
- 			        // this style was set to default, so remove default setting on previous default style
- 			        $new_instance['menu_order'] = 0;
- 			        $action_ids[] = $this->save($new_instance);
- 			    }
+ 				if ( $new_instance['menu_order'] && $_POST && empty($_POST['prev_menu_order']) && isset($_POST['frm_style_setting']['menu_order']) ) {
+ 					// this style was set to default, so remove default setting on previous default style
+ 					$new_instance['menu_order'] = 0;
+ 					$action_ids[] = $this->save($new_instance);
+ 				}
 
- 			    // don't continue if not saving this style
- 			    continue;
+ 				// don't continue if not saving this style
+ 				continue;
  			}
 
  			$new_instance['post_title'] = sanitize_text_field( $_POST['frm_style_setting']['post_title'] );
  			$new_instance['post_content'] = $_POST['frm_style_setting']['post_content'];
  			$new_instance['post_type']  = FrmStylesController::$post_type;
-            $new_instance['post_status']  = 'publish';
+			$new_instance['post_status']  = 'publish';
 			$new_instance['menu_order']  = isset( $_POST['frm_style_setting']['menu_order'] ) ? absint( $_POST['frm_style_setting']['menu_order'] ) : 0;
 
-            if ( empty($id) ) {
-                $new_instance['post_name'] = $new_instance['post_title'];
-            }
+			if ( empty($id) ) {
+				$new_instance['post_name'] = $new_instance['post_title'];
+			}
 
-            $default_settings = $this->get_defaults();
+			$default_settings = $this->get_defaults();
 
-            foreach ( $default_settings as $setting => $default ) {
+			foreach ( $default_settings as $setting => $default ) {
 				if ( strpos( $setting, 'color' ) !== false || in_array( $setting, array( 'error_bg', 'error_border', 'error_text' ) ) ) {
-                    //if is a color
+					//if is a color
 					$new_instance['post_content'][ $setting ] = str_replace( '#', '', $new_instance['post_content'][ $setting ] );
 				} else if ( in_array( $setting, array( 'submit_style', 'important_style', 'auto_width' ) ) && ! isset( $new_instance['post_content'][ $setting ] ) ) {
 					$new_instance['post_content'][ $setting ] = 0;
-                } else if ( $setting == 'font' ) {
-                	$new_instance['post_content'][ $setting ] = $this->force_balanced_quotation( $new_instance['post_content'][ $setting ] );
-                }
-            }
+				} else if ( $setting == 'font' ) {
+					$new_instance['post_content'][ $setting ] = $this->force_balanced_quotation( $new_instance['post_content'][ $setting ] );
+				}
+			}
 
 			$all_instances[ $number ] = $new_instance;
 
-            $action_ids[] = $this->save($new_instance);
+			$action_ids[] = $this->save($new_instance);
 
  		}
 
@@ -98,26 +98,26 @@ 
  		return $action_ids;
  	}
 
-    /**
-     * Create static css file
-     */
+	/**
+	 * Create static css file
+	 */
 	public function save_settings() {
 		$filename = FrmAppHelper::plugin_path() . '/css/custom_theme.css.php';
 		update_option( 'frm_last_style_update', date('njGi') );
 
-        if ( ! is_file($filename) ) {
-            return;
-        }
+		if ( ! is_file($filename) ) {
+			return;
+		}
 
 		$css = $this->get_css_content( $filename );
 
 		$create_file = new FrmCreateFile( array( 'folder_name' => 'formidable/css', 'file_name' => 'formidablepro.css' ) );
 		$create_file->create_file( $css );
 
-        update_option('frmpro_css', $css);
+		update_option('frmpro_css', $css);
 
-        delete_transient('frmpro_css');
-        set_transient('frmpro_css', $css);
+		delete_transient('frmpro_css');
+		set_transient('frmpro_css', $css);
 	}
 
 	private function get_css_content( $filename ) {
@@ -126,281 +126,281 @@ 
 		$saving = true;
 		$frm_style = $this;
 
-        ob_start();
-        include( $filename );
+		ob_start();
+		include( $filename );
 		$css .= preg_replace( '/\/\*(.|\s)*?\*\//', '', str_replace( array( "\r\n", "\r", "\n", "\t", '    ' ), '', ob_get_contents() ) );
-        ob_end_clean();
+		ob_end_clean();
 
 		return $css;
 	}
 
 	public function destroy( $id ) {
-        return wp_delete_post($id);
-    }
+		return wp_delete_post($id);
+	}
 
-    public function get_one() {
-        if ( 'default' == $this->id ) {
-            $style = $this->get_default_style();
-            if ( $style ) {
-                $this->id = $style->ID;
-            } else {
-                $this->id = 0;
-            }
-            return $style;
-        }
+	public function get_one() {
+		if ( 'default' == $this->id ) {
+			$style = $this->get_default_style();
+			if ( $style ) {
+				$this->id = $style->ID;
+			} else {
+				$this->id = 0;
+			}
+			return $style;
+		}
 
-        $style = get_post($this->id);
+		$style = get_post($this->id);
 
-        if ( ! $style ) {
-            return $style;
-        }
+		if ( ! $style ) {
+			return $style;
+		}
 
-        $style->post_content = FrmAppHelper::maybe_json_decode($style->post_content);
+		$style->post_content = FrmAppHelper::maybe_json_decode($style->post_content);
 
-        $default_values = $this->get_defaults();
+		$default_values = $this->get_defaults();
 
-        // fill default values
-        $style->post_content = $this->override_defaults($style->post_content);
-        $style->post_content = wp_parse_args( $style->post_content, $default_values);
+		// fill default values
+		$style->post_content = $this->override_defaults($style->post_content);
+		$style->post_content = wp_parse_args( $style->post_content, $default_values);
 
-        return $style;
-    }
+		return $style;
+	}
 
-    public function get_all( $orderby = 'title', $order = 'ASC', $limit = 99 ) {
-        $post_atts = array(
+	public function get_all( $orderby = 'title', $order = 'ASC', $limit = 99 ) {
+		$post_atts = array(
 			'post_type'   => FrmStylesController::$post_type,
 			'post_status' => 'publish',
 			'numberposts' => $limit,
 			'orderby'     => $orderby,
 			'order'       => $order,
-        );
+		);
 
-        $temp_styles = FrmAppHelper::check_cache(serialize($post_atts), 'frm_styles', $post_atts, 'get_posts');
+		$temp_styles = FrmAppHelper::check_cache(serialize($post_atts), 'frm_styles', $post_atts, 'get_posts');
 
-        if ( empty($temp_styles) ) {
-            global $wpdb;
-            // make sure there wasn't a conflict with the query
+		if ( empty($temp_styles) ) {
+			global $wpdb;
+			// make sure there wasn't a conflict with the query
 			$query = $wpdb->prepare( 'SELECT * FROM ' . $wpdb->posts . ' WHERE post_type=%s AND post_status=%s ORDER BY post_title ASC LIMIT 99', FrmStylesController::$post_type, 'publish' );
-            $temp_styles = FrmAppHelper::check_cache('frm_backup_style_check', 'frm_styles', $query, 'get_results');
-
-            if ( empty($temp_styles) ) {
-                // create a new style if there are none
-         		$new = $this->get_new();
-         		$new->post_title = $new->post_name = __( 'Formidable Style', 'formidable' );
-         		$new->menu_order = 1;
-         		$new = $this->save( (array) $new);
-         		$this->update('default');
-
-                $post_atts['include'] = $new;
-
-                $temp_styles = get_posts( $post_atts );
-            }
-        }
-
-        $default_values = $this->get_defaults();
-        $default_style = false;
-
-        $styles = array();
-        foreach ( $temp_styles as $style ) {
-            $this->id = $style->ID;
-            if ( $style->menu_order ) {
-                if ( $default_style ) {
-                    // only return one default
-                    $style->menu_order = 0;
-                } else {
-                    // check for a default style
-                    $default_style = $style->ID;
-                }
-            }
-
-            $style->post_content = FrmAppHelper::maybe_json_decode($style->post_content);
-
-            // fill default values
-            $style->post_content = $this->override_defaults($style->post_content);
-            $style->post_content = wp_parse_args( $style->post_content, $default_values);
+			$temp_styles = FrmAppHelper::check_cache('frm_backup_style_check', 'frm_styles', $query, 'get_results');
+
+			if ( empty($temp_styles) ) {
+				// create a new style if there are none
+		 		$new = $this->get_new();
+		 		$new->post_title = $new->post_name = __( 'Formidable Style', 'formidable' );
+		 		$new->menu_order = 1;
+		 		$new = $this->save( (array) $new);
+		 		$this->update('default');
+
+				$post_atts['include'] = $new;
+
+				$temp_styles = get_posts( $post_atts );
+			}
+		}
+
+		$default_values = $this->get_defaults();
+		$default_style = false;
+
+		$styles = array();
+		foreach ( $temp_styles as $style ) {
+			$this->id = $style->ID;
+			if ( $style->menu_order ) {
+				if ( $default_style ) {
+					// only return one default
+					$style->menu_order = 0;
+				} else {
+					// check for a default style
+					$default_style = $style->ID;
+				}
+			}
+
+			$style->post_content = FrmAppHelper::maybe_json_decode($style->post_content);
+
+			// fill default values
+			$style->post_content = $this->override_defaults($style->post_content);
+			$style->post_content = wp_parse_args( $style->post_content, $default_values);
 
 			$styles[ $style->ID ] = $style;
-        }
+		}
 
-        if ( ! $default_style ) {
-            $default_style = reset($styles);
+		if ( ! $default_style ) {
+			$default_style = reset($styles);
 			$styles[ $default_style->ID ]->menu_order = 1;
-        }
+		}
 
-        return $styles;
-    }
+		return $styles;
+	}
 
 	public function get_default_style( $styles = null ) {
-        if ( ! isset($styles) ) {
+		if ( ! isset($styles) ) {
 			$styles = $this->get_all( 'menu_order', 'DESC', 1 );
-        }
+		}
 
-        foreach ( $styles as $style ) {
-            if ( $style->menu_order ) {
-                return $style;
-            }
-        }
-    }
+		foreach ( $styles as $style ) {
+			if ( $style->menu_order ) {
+				return $style;
+			}
+		}
+	}
 
 	public function override_defaults( $settings ) {
-	    if ( ! is_array($settings) ) {
-	        return $settings;
-	    }
-
-	    $settings['line_height'] = ( ! isset($settings['field_height']) || $settings['field_height'] == '' || $settings['field_height'] == 'auto') ? 'normal' : $settings['field_height'];
-
-	    if ( ! isset($settings['form_desc_size']) && isset($settings['description_font_size']) ) {
-	        $settings['form_desc_size'] = $settings['description_font_size'];
-	        $settings['form_desc_color'] = $settings['description_color'];
-	        $settings['title_color'] = $settings['label_color'];
-	    }
-
-	    if ( ! isset($settings['section_color']) && isset($settings['label_color']) ) {
-	        $settings['section_color'] = $settings['label_color'];
-	        $settings['section_border_color'] = $settings['border_color'];
-	    }
-
-	    if ( ! isset($settings['submit_hover_bg_color']) && isset($settings['submit_bg_color']) ) {
-	        $settings['submit_hover_bg_color'] = $settings['submit_bg_color'];
-	        $settings['submit_hover_color'] = $settings['submit_text_color'];
-	        $settings['submit_hover_border_color'] = $settings['submit_border_color'];
-
-	        $settings['submit_active_bg_color'] = $settings['submit_bg_color'];
-	        $settings['submit_active_color'] = $settings['submit_text_color'];
-            $settings['submit_active_border_color'] = $settings['submit_border_color'];
-	    }
-
-	    return $settings;
+		if ( ! is_array($settings) ) {
+			return $settings;
+		}
+
+		$settings['line_height'] = ( ! isset($settings['field_height']) || $settings['field_height'] == '' || $settings['field_height'] == 'auto') ? 'normal' : $settings['field_height'];
+
+		if ( ! isset($settings['form_desc_size']) && isset($settings['description_font_size']) ) {
+			$settings['form_desc_size'] = $settings['description_font_size'];
+			$settings['form_desc_color'] = $settings['description_color'];
+			$settings['title_color'] = $settings['label_color'];
+		}
+
+		if ( ! isset($settings['section_color']) && isset($settings['label_color']) ) {
+			$settings['section_color'] = $settings['label_color'];
+			$settings['section_border_color'] = $settings['border_color'];
+		}
+
+		if ( ! isset($settings['submit_hover_bg_color']) && isset($settings['submit_bg_color']) ) {
+			$settings['submit_hover_bg_color'] = $settings['submit_bg_color'];
+			$settings['submit_hover_color'] = $settings['submit_text_color'];
+			$settings['submit_hover_border_color'] = $settings['submit_border_color'];
+
+			$settings['submit_active_bg_color'] = $settings['submit_bg_color'];
+			$settings['submit_active_color'] = $settings['submit_text_color'];
+			$settings['submit_active_border_color'] = $settings['submit_border_color'];
+		}
+
+		return $settings;
 	}
 
 	public function get_defaults() {
-        return array(
-            'theme_css'         => 'ui-lightness',
-            'theme_name'        => 'UI Lightness',
+		return array(
+			'theme_css'         => 'ui-lightness',
+			'theme_name'        => 'UI Lightness',
 
 			'center_form'		=> '',
-            'form_width'        => '100%',
-            'form_align'        => 'left',
-            'direction'         => is_rtl() ? 'rtl' : 'ltr',
-            'fieldset'          => '0px',
-            'fieldset_color'    => '000000',
-            'fieldset_padding'  => '0 0 15px 0',
-            'fieldset_bg_color' => '',
-
-            'title_size'        => '20px',
-            'title_color'       => '444444',
+			'form_width'        => '100%',
+			'form_align'        => 'left',
+			'direction'         => is_rtl() ? 'rtl' : 'ltr',
+			'fieldset'          => '0px',
+			'fieldset_color'    => '000000',
+			'fieldset_padding'  => '0 0 15px 0',
+			'fieldset_bg_color' => '',
+
+			'title_size'        => '20px',
+			'title_color'       => '444444',
 			'title_margin_top'  => '10px',
 			'title_margin_bottom' => '10px',
-            'form_desc_size'    => '14px',
-            'form_desc_color'   => '666666',
+			'form_desc_size'    => '14px',
+			'form_desc_color'   => '666666',
 			'form_desc_margin_top' => '10px',
 			'form_desc_margin_bottom' => '25px',
 
-            'font'              => '"Lucida Grande","Lucida Sans Unicode",Tahoma,sans-serif',
-            'font_size'         => '14px',
-            'label_color'       => '444444',
-            'weight'            => 'bold',
-            'position'          => 'none',
-            'align'             => 'left',
-            'width'             => '150px',
-            'required_color'    => 'B94A48',
-            'required_weight'   => 'bold',
-            'label_padding'     => '0 0 3px 0',
-
-            'description_font_size' => '12px',
-            'description_color' => '666666',
-            'description_weight' => 'normal',
-            'description_style' => 'normal',
-            'description_align' => 'left',
+			'font'              => '"Lucida Grande","Lucida Sans Unicode",Tahoma,sans-serif',
+			'font_size'         => '14px',
+			'label_color'       => '444444',
+			'weight'            => 'bold',
+			'position'          => 'none',
+			'align'             => 'left',
+			'width'             => '150px',
+			'required_color'    => 'B94A48',
+			'required_weight'   => 'bold',
+			'label_padding'     => '0 0 3px 0',
+
+			'description_font_size' => '12px',
+			'description_color' => '666666',
+			'description_weight' => 'normal',
+			'description_style' => 'normal',
+			'description_align' => 'left',
 			'description_margin' => '0',
 
-            'field_font_size'   => '14px',
-            'field_height' 		=> '32px',
-            'line_height'		=> 'normal',
-            'field_width'       => '100%',
-            'auto_width'        => false,
-            'field_pad'         => '6px 10px',
-            'field_margin'      => '20px',
+			'field_font_size'   => '14px',
+			'field_height' 		=> '32px',
+			'line_height'		=> 'normal',
+			'field_width'       => '100%',
+			'auto_width'        => false,
+			'field_pad'         => '6px 10px',
+			'field_margin'      => '20px',
 			'field_weight' => 'normal',
-            'text_color'        => '555555',
-            //'border_color_hv'   => 'cccccc',
-            'border_color'      => 'cccccc',
-            'field_border_width' => '1px',
-            'field_border_style' => 'solid',
-
-            'bg_color'          => 'ffffff',
-            //'bg_color_hv'       => 'ffffff',
+			'text_color'        => '555555',
+			//'border_color_hv'   => 'cccccc',
+			'border_color'      => 'cccccc',
+			'field_border_width' => '1px',
+			'field_border_style' => 'solid',
+
+			'bg_color'          => 'ffffff',
+			//'bg_color_hv'       => 'ffffff',
 			'remove_box_shadow' => '',
-            'bg_color_active'   => 'ffffff',
+			'bg_color_active'   => 'ffffff',
 			'border_color_active' => '66afe9',
 			'remove_box_shadow_active' => '',
-            'text_color_error'  => '444444',
-            'bg_color_error'    => 'ffffff',
+			'text_color_error'  => '444444',
+			'bg_color_error'    => 'ffffff',
 			'border_color_error' => 'B94A48',
 			'border_width_error' => '1px',
 			'border_style_error' => 'solid',
-            'bg_color_disabled' => 'ffffff',
-            'border_color_disabled' => 'E5E5E5',
-            'text_color_disabled' => 'A1A1A1',
-
-            'radio_align'       => 'block',
-            'check_align'       => 'block',
-            'check_font_size'   => '13px',
-            'check_label_color' => '444444',
-            'check_weight'      => 'normal',
-
-            'section_font_size' => '18px',
-            'section_color'     => '444444',
-            'section_weight'    => 'bold',
-            'section_pad'       => '15px 0 3px 0',
-            'section_mar_top'   => '15px',
+			'bg_color_disabled' => 'ffffff',
+			'border_color_disabled' => 'E5E5E5',
+			'text_color_disabled' => 'A1A1A1',
+
+			'radio_align'       => 'block',
+			'check_align'       => 'block',
+			'check_font_size'   => '13px',
+			'check_label_color' => '444444',
+			'check_weight'      => 'normal',
+
+			'section_font_size' => '18px',
+			'section_color'     => '444444',
+			'section_weight'    => 'bold',
+			'section_pad'       => '15px 0 3px 0',
+			'section_mar_top'   => '15px',
 			'section_mar_bottom' => '12px',
-            'section_bg_color'  => '',
-            'section_border_color' => 'e8e8e8',
-            'section_border_width' => '2px',
-            'section_border_style' => 'solid',
-            'section_border_loc' => '-top',
-            'collapse_icon'     => '6',
-            'collapse_pos'      => 'after',
-            'repeat_icon'       => '1',
-
-            'submit_style'      => false,
-            'submit_font_size'  => '14px',
-            'submit_width'      => 'auto',
-            'submit_height'     => 'auto',
-            'submit_bg_color'   => 'ffffff',
-            'submit_border_color' => 'cccccc',
-            'submit_border_width' => '1px',
-            'submit_text_color' => '444444',
-            'submit_weight'     => 'normal',
-            'submit_border_radius' => '4px',
-            'submit_bg_img'     => '',
-            'submit_margin'     => '10px',
-            'submit_padding'    => '6px 11px',
-            'submit_shadow_color' => 'eeeeee',
-            'submit_hover_bg_color' => 'efefef',
-            'submit_hover_color' => '444444',
-            'submit_hover_border_color' => 'cccccc',
-            'submit_active_bg_color' => 'efefef',
-            'submit_active_color' => '444444',
-            'submit_active_border_color' => 'cccccc',
-
-            'border_radius'     => '4px',
-            'error_bg'          => 'F2DEDE',
-            'error_border'      => 'EBCCD1',
-            'error_text'        => 'B94A48',
-            'error_font_size'   => '14px',
-
-            'success_bg_color'  => 'DFF0D8',
-            'success_border_color' => 'D6E9C6',
-            'success_text_color' => '468847',
-            'success_font_size' => '14px',
-
-            'important_style'   => false,
-
-            'custom_css'        => '',
-        );
-    }
+			'section_bg_color'  => '',
+			'section_border_color' => 'e8e8e8',
+			'section_border_width' => '2px',
+			'section_border_style' => 'solid',
+			'section_border_loc' => '-top',
+			'collapse_icon'     => '6',
+			'collapse_pos'      => 'after',
+			'repeat_icon'       => '1',
+
+			'submit_style'      => false,
+			'submit_font_size'  => '14px',
+			'submit_width'      => 'auto',
+			'submit_height'     => 'auto',
+			'submit_bg_color'   => 'ffffff',
+			'submit_border_color' => 'cccccc',
+			'submit_border_width' => '1px',
+			'submit_text_color' => '444444',
+			'submit_weight'     => 'normal',
+			'submit_border_radius' => '4px',
+			'submit_bg_img'     => '',
+			'submit_margin'     => '10px',
+			'submit_padding'    => '6px 11px',
+			'submit_shadow_color' => 'eeeeee',
+			'submit_hover_bg_color' => 'efefef',
+			'submit_hover_color' => '444444',
+			'submit_hover_border_color' => 'cccccc',
+			'submit_active_bg_color' => 'efefef',
+			'submit_active_color' => '444444',
+			'submit_active_border_color' => 'cccccc',
+
+			'border_radius'     => '4px',
+			'error_bg'          => 'F2DEDE',
+			'error_border'      => 'EBCCD1',
+			'error_text'        => 'B94A48',
+			'error_font_size'   => '14px',
+
+			'success_bg_color'  => 'DFF0D8',
+			'success_border_color' => 'D6E9C6',
+			'success_text_color' => '468847',
+			'success_font_size' => '14px',
+
+			'important_style'   => false,
+
+			'custom_css'        => '',
+		);
+	}
 
 	public function get_field_name( $field_name, $post_field = 'post_content' ) {
 		return 'frm_style_setting' . ( empty( $post_field ) ? '' : '[' . $post_field . ']' ) . '[' . $field_name . ']';