GridView::renderSection() - Code Metrics - Inspection of "Reordered CHANGELOG" - rob006/yii2-dev - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — master ( 6886d6...1496c8 )

by Robert

created 2016-10-04 20:31 UTC

GridView::renderSection() A

↳ Parent: GridView

Complexity

Conditions	2
Paths	2

Size

Total Lines	9
Code Lines	6

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	0
CRAP Score	6

Importance

Changes

Metric	Value
dl	0
loc	9
rs	9.6666
c	0
b	0
f	0
ccs	0
cts	6
cp	0
cc	2
eloc	6
nc	2
nop	1
crap	6

<?php
/**
 * @link http://www.yiiframework.com/
 * @copyright Copyright (c) 2008 Yii Software LLC
 * @license http://www.yiiframework.com/license/
 */

namespace yii\grid;

use Yii;
use Closure;
use yii\i18n\Formatter;
use yii\base\InvalidConfigException;
use yii\helpers\Url;
use yii\helpers\Html;
use yii\helpers\Json;
use yii\widgets\BaseListView;
use yii\base\Model;

/**
 * The GridView widget is used to display data in a grid.
 *
 * It provides features like [[sorter|sorting]], [[pager|paging]] and also [[filterModel|filtering]] the data.
 *
 * A basic usage looks like the following:
 *
 * ```php
 * <?= GridView::widget([
 *     'dataProvider' => $dataProvider,
 *     'columns' => [
 *         'id',
 *         'name',
 *         'created_at:datetime',
 *         // ...
 *     ],
 * ]) ?>
 * ```
 *
 * The columns of the grid table are configured in terms of [[Column]] classes,
 * which are configured via [[columns]].
 *
 * The look and feel of a grid view can be customized using the large amount of properties.
 *
 * @author Qiang Xue <[email protected]>
 * @since 2.0
 */
class GridView extends BaseListView
{
    const FILTER_POS_HEADER = 'header';
    const FILTER_POS_FOOTER = 'footer';
    const FILTER_POS_BODY = 'body';

    /**
     * @var string the default data column class if the class name is not explicitly specified when configuring a data column.
     * Defaults to 'yii\grid\DataColumn'.
     */
    public $dataColumnClass;
    /**
     * @var string the caption of the grid table
     * @see captionOptions
     */
    public $caption;
    /**
     * @var array the HTML attributes for the caption element.
     * @see \yii\helpers\Html::renderTagAttributes() for details on how attributes are being rendered.
     * @see caption
     */
    public $captionOptions = [];
    /**
     * @var array the HTML attributes for the grid table element.
     * @see \yii\helpers\Html::renderTagAttributes() for details on how attributes are being rendered.
     */
    public $tableOptions = ['class' => 'table table-striped table-bordered'];
    /**
     * @var array the HTML attributes for the container tag of the grid view.
     * The "tag" element specifies the tag name of the container element and defaults to "div".
     * @see \yii\helpers\Html::renderTagAttributes() for details on how attributes are being rendered.
     */
    public $options = ['class' => 'grid-view'];
    /**
     * @var array the HTML attributes for the table header row.
     * @see \yii\helpers\Html::renderTagAttributes() for details on how attributes are being rendered.
     */
    public $headerRowOptions = [];
    /**
     * @var array the HTML attributes for the table footer row.
     * @see \yii\helpers\Html::renderTagAttributes() for details on how attributes are being rendered.
     */
    public $footerRowOptions = [];
    /**
     * @var array|Closure the HTML attributes for the table body rows. This can be either an array
     * specifying the common HTML attributes for all body rows, or an anonymous function that
     * returns an array of the HTML attributes. The anonymous function will be called once for every
     * data model returned by [[dataProvider]]. It should have the following signature:
     *
     * ```php
     * function ($model, $key, $index, $grid)
     * ```
     *
     * - `$model`: the current data model being rendered
     * - `$key`: the key value associated with the current data model
     * - `$index`: the zero-based index of the data model in the model array returned by [[dataProvider]]
     * - `$grid`: the GridView object
     *
     * @see \yii\helpers\Html::renderTagAttributes() for details on how attributes are being rendered.
     */
    public $rowOptions = [];
    /**
     * @var Closure an anonymous function that is called once BEFORE rendering each data model.
     * It should have the similar signature as [[rowOptions]]. The return result of the function
     * will be rendered directly.
     */
    public $beforeRow;
    /**
     * @var Closure an anonymous function that is called once AFTER rendering each data model.
     * It should have the similar signature as [[rowOptions]]. The return result of the function
     * will be rendered directly.
     */
    public $afterRow;
    /**
     * @var boolean whether to show the header section of the grid table.
     */
    public $showHeader = true;
    /**
     * @var boolean whether to show the footer section of the grid table.
     */
    public $showFooter = false;
    /**
     * @var boolean whether to show the grid view if [[dataProvider]] returns no data.
     */
    public $showOnEmpty = true;
    /**
     * @var array|Formatter the formatter used to format model attribute values into displayable texts.
     * This can be either an instance of [[Formatter]] or an configuration array for creating the [[Formatter]]
     * instance. If this property is not set, the "formatter" application component will be used.
     */
    public $formatter;
    /**
     * @var array grid column configuration. Each array element represents the configuration
     * for one particular grid column. For example,
     *
     * ```php
     * [
     *     ['class' => SerialColumn::className()],
     *     [
     *         'class' => DataColumn::className(), // this line is optional
     *         'attribute' => 'name',
     *         'format' => 'text',
     *         'label' => 'Name',
     *     ],
     *     ['class' => CheckboxColumn::className()],
     * ]
     * ```
     *
     * If a column is of class [[DataColumn]], the "class" element can be omitted.
     *
     * As a shortcut format, a string may be used to specify the configuration of a data column
     * which only contains [[DataColumn::attribute|attribute]], [[DataColumn::format|format]],
     * and/or [[DataColumn::label|label]] options: `"attribute:format:label"`.
     * For example, the above "name" column can also be specified as: `"name:text:Name"`.
     * Both "format" and "label" are optional. They will take default values if absent.
     *
     * Using the shortcut format the configuration for columns in simple cases would look like this:
     *
     * ```php
     * [
     *     'id',
     *     'amount:currency:Total Amount',
     *     'created_at:datetime',
     * ]
     * ```
     *
     * When using a [[dataProvider]] with active records, you can also display values from related records,
     * e.g. the `name` attribute of the `author` relation:
     *
     * ```php
     * // shortcut syntax
     * 'author.name',
     * // full syntax
     * [
     *     'attribute' => 'author.name',
     *     // ...
     * ]
     * ```
     */
    public $columns = [];
    /**
     * @var string the HTML display when the content of a cell is empty.
     * This property is used to render cells that have no defined content,
     * e.g. empty footer or filter cells.
     *
     * Note that this is not used by the [[DataColumn]] if a data item is `null`. In that case
     * the [[\yii\i18n\Formatter::nullDisplay|nullDisplay]] property of the [[formatter]] will
     * be used to indicate an empty data value.
     */
    public $emptyCell = '&nbsp;';
    /**
     * @var \yii\base\Model the model that keeps the user-entered filter data. When this property is set,
     * the grid view will enable column-based filtering. Each data column by default will display a text field
     * at the top that users can fill in to filter the data.
     *
     * Note that in order to show an input field for filtering, a column must have its [[DataColumn::attribute]]
     * property set or have [[DataColumn::filter]] set as the HTML code for the input field.
     *
     * When this property is not set (null) the filtering feature is disabled.
     */
    public $filterModel;
    /**
     * @var string|array the URL for returning the filtering result. [[Url::to()]] will be called to
     * normalize the URL. If not set, the current controller action will be used.
     * When the user makes change to any filter input, the current filtering inputs will be appended
     * as GET parameters to this URL.
     */
    public $filterUrl;
    /**
     * @var string additional jQuery selector for selecting filter input fields
     */
    public $filterSelector;
    /**
     * @var string whether the filters should be displayed in the grid view. Valid values include:
     *
     * - [[FILTER_POS_HEADER]]: the filters will be displayed on top of each column's header cell.
     * - [[FILTER_POS_BODY]]: the filters will be displayed right below each column's header cell.
     * - [[FILTER_POS_FOOTER]]: the filters will be displayed below each column's footer cell.
     */
    public $filterPosition = self::FILTER_POS_BODY;
    /**
     * @var array the HTML attributes for the filter row element.
     * @see \yii\helpers\Html::renderTagAttributes() for details on how attributes are being rendered.
     */
    public $filterRowOptions = ['class' => 'filters'];
    /**
     * @var array the options for rendering the filter error summary.
     * Please refer to [[Html::errorSummary()]] for more details about how to specify the options.
     * @see renderErrors()
     */
    public $filterErrorSummaryOptions = ['class' => 'error-summary'];
    /**
     * @var array the options for rendering every filter error message.
     * This is mainly used by [[Html::error()]] when rendering an error message next to every filter input field.
     */
    public $filterErrorOptions = ['class' => 'help-block'];
    /**
     * @var string the layout that determines how different sections of the list view should be organized.
     * The following tokens will be replaced with the corresponding section contents:
     *
     * - `{summary}`: the summary section. See [[renderSummary()]].
     * - `{errors}`: the filter model error summary. See [[renderErrors()]].
     * - `{items}`: the list items. See [[renderItems()]].
     * - `{sorter}`: the sorter. See [[renderSorter()]].
     * - `{pager}`: the pager. See [[renderPager()]].
     */
    public $layout = "{summary}\n{items}\n{pager}";


    /**
     * Initializes the grid view.
     * This method will initialize required property values and instantiate [[columns]] objects.
     */
    public function init()
    {
        parent::init();
        if ($this->formatter === null) {
            $this->formatter = Yii::$app->getFormatter();
        } elseif (is_array($this->formatter)) {
            $this->formatter = Yii::createObject($this->formatter);
        }
        if (!$this->formatter instanceof Formatter) {
            throw new InvalidConfigException('The "formatter" property must be either a Format object or a configuration array.');
        }
        if (!isset($this->filterRowOptions['id'])) {
            $this->filterRowOptions['id'] = $this->options['id'] . '-filters';
        }

        $this->initColumns();
    }

    /**
     * Runs the widget.
     */
    public function run()
    {
        $id = $this->options['id'];
        $options = Json::htmlEncode($this->getClientOptions());
        $view = $this->getView();
        GridViewAsset::register($view);
        $view->registerJs("jQuery('#$id').yiiGridView($options);");
        parent::run();
    }

    /**
     * Renders validator errors of filter model.
     * @return string the rendering result.
     */
    public function renderErrors()
    {
        if ($this->filterModel instanceof Model && $this->filterModel->hasErrors()) {
            return Html::errorSummary($this->filterModel, $this->filterErrorSummaryOptions);
        } else {
            return '';
        }
    }

    /**
     * @inheritdoc
     */
    public function renderSection($name)
    {
        switch ($name) {
            case '{errors}':
                return $this->renderErrors();
            default:
                return parent::renderSection($name);
        }
    }

    /**
     * Returns the options for the grid view JS widget.
     * @return array the options
     */
    protected function getClientOptions()
    {
        $filterUrl = isset($this->filterUrl) ? $this->filterUrl : Yii::$app->request->url;
        $id = $this->filterRowOptions['id'];
        $filterSelector = "#$id input, #$id select";
        if (isset($this->filterSelector)) {
            $filterSelector .= ', ' . $this->filterSelector;
        }

        return [
            'filterUrl' => Url::to($filterUrl),
            'filterSelector' => $filterSelector,
        ];
    }

    /**
     * Renders the data models for the grid view.
     */
    public function renderItems()
    {
        $caption = $this->renderCaption();
        $columnGroup = $this->renderColumnGroup();
        $tableHeader = $this->showHeader ? $this->renderTableHeader() : false;
        $tableBody = $this->renderTableBody();
        $tableFooter = $this->showFooter ? $this->renderTableFooter() : false;
        $content = array_filter([
            $caption,
            $columnGroup,
            $tableHeader,
            $tableFooter,
            $tableBody,
        ]);

        return Html::tag('table', implode("\n", $content), $this->tableOptions);
    }

    /**
     * Renders the caption element.
     * @return boolean|string the rendered caption element or `false` if no caption element should be rendered.
     */
    public function renderCaption()
    {
        if (!empty($this->caption)) {
            return Html::tag('caption', $this->caption, $this->captionOptions);
        } else {
            return false;
        }
    }

    /**
     * Renders the column group HTML.
     * @return boolean|string the column group HTML or `false` if no column group should be rendered.
     */
    public function renderColumnGroup()
    {
        $requireColumnGroup = false;
        foreach ($this->columns as $column) {
            /* @var $column Column */
            if (!empty($column->options)) {
                $requireColumnGroup = true;
                break;
            }
        }
        if ($requireColumnGroup) {
            $cols = [];
            foreach ($this->columns as $column) {
                $cols[] = Html::tag('col', '', $column->options);
            }

            return Html::tag('colgroup', implode("\n", $cols));
        } else {
            return false;
        }
    }

    /**
     * Renders the table header.
     * @return string the rendering result.
     */
    public function renderTableHeader()
    {
        $cells = [];
        foreach ($this->columns as $column) {
            /* @var $column Column */
            $cells[] = $column->renderHeaderCell();
        }
        $content = Html::tag('tr', implode('', $cells), $this->headerRowOptions);
        if ($this->filterPosition === self::FILTER_POS_HEADER) {
            $content = $this->renderFilters() . $content;
        } elseif ($this->filterPosition === self::FILTER_POS_BODY) {
            $content .= $this->renderFilters();
        }

        return "<thead>\n" . $content . "\n</thead>";
    }

    /**
     * Renders the table footer.
     * @return string the rendering result.
     */
    public function renderTableFooter()
    {
        $cells = [];
        foreach ($this->columns as $column) {
            /* @var $column Column */
            $cells[] = $column->renderFooterCell();
        }
        $content = Html::tag('tr', implode('', $cells), $this->footerRowOptions);
        if ($this->filterPosition === self::FILTER_POS_FOOTER) {
            $content .= $this->renderFilters();
        }

        return "<tfoot>\n" . $content . "\n</tfoot>";
    }

    /**
     * Renders the filter.
     * @return string the rendering result.
     */
    public function renderFilters()
    {
        if ($this->filterModel !== null) {
            $cells = [];
            foreach ($this->columns as $column) {
                /* @var $column Column */
                $cells[] = $column->renderFilterCell();
            }

            return Html::tag('tr', implode('', $cells), $this->filterRowOptions);
        } else {
            return '';
        }
    }

    /**
     * Renders the table body.
     * @return string the rendering result.
     */
    public function renderTableBody()
    {
        $models = array_values($this->dataProvider->getModels());
        $keys = $this->dataProvider->getKeys();
        $rows = [];
        foreach ($models as $index => $model) {
            $key = $keys[$index];
            if ($this->beforeRow !== null) {
                $row = call_user_func($this->beforeRow, $model, $key, $index, $this);
                if (!empty($row)) {
                    $rows[] = $row;
                }
            }

            $rows[] = $this->renderTableRow($model, $key, $index);

            if ($this->afterRow !== null) {
                $row = call_user_func($this->afterRow, $model, $key, $index, $this);
                if (!empty($row)) {
                    $rows[] = $row;
                }
            }
        }

        if (empty($rows)) {
            $colspan = count($this->columns);

            return "<tbody>\n<tr><td colspan=\"$colspan\">" . $this->renderEmpty() . "</td></tr>\n</tbody>";
        } else {
            return "<tbody>\n" . implode("\n", $rows) . "\n</tbody>";
        }
    }

    /**
     * Renders a table row with the given data model and key.
     * @param mixed $model the data model to be rendered
     * @param mixed $key the key associated with the data model
     * @param integer $index the zero-based index of the data model among the model array returned by [[dataProvider]].
     * @return string the rendering result
     */
    public function renderTableRow($model, $key, $index)
    {
        $cells = [];
        /* @var $column Column */
        foreach ($this->columns as $column) {
            $cells[] = $column->renderDataCell($model, $key, $index);
        }
        if ($this->rowOptions instanceof Closure) {
            $options = call_user_func($this->rowOptions, $model, $key, $index, $this);
        } else {
            $options = $this->rowOptions;
        }
        $options['data-key'] = is_array($key) ? json_encode($key) : (string) $key;

        return Html::tag('tr', implode('', $cells), $options);
    }

    /**
     * Creates column objects and initializes them.
     */
    protected function initColumns()
    {
        if (empty($this->columns)) {
            $this->guessColumns();
        }
        foreach ($this->columns as $i => $column) {
            if (is_string($column)) {
                $column = $this->createDataColumn($column);
            } else {
                $column = Yii::createObject(array_merge([
                    'class' => $this->dataColumnClass ? : DataColumn::className(),
                    'grid' => $this,
                ], $column));
            }
            if (!$column->visible) {
                unset($this->columns[$i]);
                continue;
            }
            $this->columns[$i] = $column;
        }
    }

    /**
     * Creates a [[DataColumn]] object based on a string in the format of "attribute:format:label".
     * @param string $text the column specification string
     * @return DataColumn the column instance
     * @throws InvalidConfigException if the column specification is invalid
     */
    protected function createDataColumn($text)
    {
        if (!preg_match('/^([^:]+)(:(\w*))?(:(.*))?$/', $text, $matches)) {
            throw new InvalidConfigException('The column must be specified in the format of "attribute", "attribute:format" or "attribute:format:label"');
        }

        return Yii::createObject([
            'class' => $this->dataColumnClass ? : DataColumn::className(),
            'grid' => $this,
            'attribute' => $matches[1],
            'format' => isset($matches[3]) ? $matches[3] : 'text',
            'label' => isset($matches[5]) ? $matches[5] : null,
        ]);
    }

    /**
     * This function tries to guess the columns to show from the given data
     * if [[columns]] are not explicitly specified.
     */
    protected function guessColumns()
    {
        $models = $this->dataProvider->getModels();
        $model = reset($models);
        if (is_array($model) || is_object($model)) {
            foreach ($model as $name => $value) {
                $this->columns[] = (string) $name;
            }
        }
    }
}


1		<?php
2		/**
3		* @link http://www.yiiframework.com/
4		* @copyright Copyright (c) 2008 Yii Software LLC
5		* @license http://www.yiiframework.com/license/
6		*/
7
8		namespace yii\grid;
9
10		use Yii;
11		use Closure;
12		use yii\i18n\Formatter;
13		use yii\base\InvalidConfigException;
14		use yii\helpers\Url;
15		use yii\helpers\Html;
16		use yii\helpers\Json;
17		use yii\widgets\BaseListView;
18		use yii\base\Model;
19
20		/**
21		* The GridView widget is used to display data in a grid.
22		*
23		* It provides features like [[sorter\|sorting]], [[pager\|paging]] and also [[filterModel\|filtering]] the data.
24		*
25		* A basic usage looks like the following:
26		*
27		* ```php
28		* <?= GridView::widget([
29		* 'dataProvider' => $dataProvider,
30		* 'columns' => [
31		* 'id',
32		* 'name',
33		* 'created_at:datetime',
34		* // ...
35		* ],
36		* ]) ?>
37		* ```
38		*
39		* The columns of the grid table are configured in terms of [[Column]] classes,
40		* which are configured via [[columns]].
41		*
42		* The look and feel of a grid view can be customized using the large amount of properties.
43		*
44		* @author Qiang Xue <[email protected]>
45		* @since 2.0
46		*/
47		class GridView extends BaseListView
48		{
49		const FILTER_POS_HEADER = 'header';
50		const FILTER_POS_FOOTER = 'footer';
51		const FILTER_POS_BODY = 'body';
52
53		/**
54		* @var string the default data column class if the class name is not explicitly specified when configuring a data column.
55		* Defaults to 'yii\grid\DataColumn'.
56		*/
57		public $dataColumnClass;
58		/**
59		* @var string the caption of the grid table
60		* @see captionOptions
61		*/
62		public $caption;
63		/**
64		* @var array the HTML attributes for the caption element.
65		* @see \yii\helpers\Html::renderTagAttributes() for details on how attributes are being rendered.
66		* @see caption
67		*/
68		public $captionOptions = [];
69		/**
70		* @var array the HTML attributes for the grid table element.
71		* @see \yii\helpers\Html::renderTagAttributes() for details on how attributes are being rendered.
72		*/
73		public $tableOptions = ['class' => 'table table-striped table-bordered'];
74		/**
75		* @var array the HTML attributes for the container tag of the grid view.
76		* The "tag" element specifies the tag name of the container element and defaults to "div".
77		* @see \yii\helpers\Html::renderTagAttributes() for details on how attributes are being rendered.
78		*/
79		public $options = ['class' => 'grid-view'];
80		/**
81		* @var array the HTML attributes for the table header row.
82		* @see \yii\helpers\Html::renderTagAttributes() for details on how attributes are being rendered.
83		*/
84		public $headerRowOptions = [];
85		/**
86		* @var array the HTML attributes for the table footer row.
87		* @see \yii\helpers\Html::renderTagAttributes() for details on how attributes are being rendered.
88		*/
89		public $footerRowOptions = [];
90		/**
91		* @var array\|Closure the HTML attributes for the table body rows. This can be either an array
92		* specifying the common HTML attributes for all body rows, or an anonymous function that
93		* returns an array of the HTML attributes. The anonymous function will be called once for every
94		* data model returned by [[dataProvider]]. It should have the following signature:
95		*
96		* ```php
97		* function ($model, $key, $index, $grid)
98		* ```
99		*
100		* - `$model`: the current data model being rendered
101		* - `$key`: the key value associated with the current data model
102		* - `$index`: the zero-based index of the data model in the model array returned by [[dataProvider]]
103		* - `$grid`: the GridView object
104		*
105		* @see \yii\helpers\Html::renderTagAttributes() for details on how attributes are being rendered.
106		*/
107		public $rowOptions = [];
108		/**
109		* @var Closure an anonymous function that is called once BEFORE rendering each data model.
110		* It should have the similar signature as [[rowOptions]]. The return result of the function
111		* will be rendered directly.
112		*/
113		public $beforeRow;
114		/**
115		* @var Closure an anonymous function that is called once AFTER rendering each data model.
116		* It should have the similar signature as [[rowOptions]]. The return result of the function
117		* will be rendered directly.
118		*/
119		public $afterRow;
120		/**
121		* @var boolean whether to show the header section of the grid table.
122		*/
123		public $showHeader = true;
124		/**
125		* @var boolean whether to show the footer section of the grid table.
126		*/
127		public $showFooter = false;
128		/**
129		* @var boolean whether to show the grid view if [[dataProvider]] returns no data.
130		*/
131		public $showOnEmpty = true;
132		/**
133		* @var array\|Formatter the formatter used to format model attribute values into displayable texts.
134		* This can be either an instance of [[Formatter]] or an configuration array for creating the [[Formatter]]
135		* instance. If this property is not set, the "formatter" application component will be used.
136		*/
137		public $formatter;
138		/**
139		* @var array grid column configuration. Each array element represents the configuration
140		* for one particular grid column. For example,
141		*
142		* ```php
143		* [
144		* ['class' => SerialColumn::className()],
145		* [
146		* 'class' => DataColumn::className(), // this line is optional
147		* 'attribute' => 'name',
148		* 'format' => 'text',
149		* 'label' => 'Name',
150		* ],
151		* ['class' => CheckboxColumn::className()],
152		* ]
153		* ```
154		*
155		* If a column is of class [[DataColumn]], the "class" element can be omitted.
156		*
157		* As a shortcut format, a string may be used to specify the configuration of a data column
158		* which only contains [[DataColumn::attribute\|attribute]], [[DataColumn::format\|format]],
159		* and/or [[DataColumn::label\|label]] options: `"attribute:format:label"`.
160		* For example, the above "name" column can also be specified as: `"name:text:Name"`.
161		* Both "format" and "label" are optional. They will take default values if absent.
162		*
163		* Using the shortcut format the configuration for columns in simple cases would look like this:
164		*
165		* ```php
166		* [
167		* 'id',
168		* 'amount:currency:Total Amount',
169		* 'created_at:datetime',
170		* ]
171		* ```
172		*
173		* When using a [[dataProvider]] with active records, you can also display values from related records,
174		* e.g. the `name` attribute of the `author` relation:
175		*
176		* ```php
177		* // shortcut syntax
178		* 'author.name',
179		* // full syntax
180		* [
181		* 'attribute' => 'author.name',
182		* // ...
183		* ]
184		* ```
185		*/
186		public $columns = [];
187		/**
188		* @var string the HTML display when the content of a cell is empty.
189		* This property is used to render cells that have no defined content,
190		* e.g. empty footer or filter cells.
191		*
192		* Note that this is not used by the [[DataColumn]] if a data item is `null`. In that case
193		* the [[\yii\i18n\Formatter::nullDisplay\|nullDisplay]] property of the [[formatter]] will
194		* be used to indicate an empty data value.
195		*/
196		public $emptyCell = ' ';
197		/**
198		* @var \yii\base\Model the model that keeps the user-entered filter data. When this property is set,
199		* the grid view will enable column-based filtering. Each data column by default will display a text field
200		* at the top that users can fill in to filter the data.
201		*
202		* Note that in order to show an input field for filtering, a column must have its [[DataColumn::attribute]]
203		* property set or have [[DataColumn::filter]] set as the HTML code for the input field.
204		*
205		* When this property is not set (null) the filtering feature is disabled.
206		*/
207		public $filterModel;
208		/**
209		* @var string\|array the URL for returning the filtering result. [[Url::to()]] will be called to
210		* normalize the URL. If not set, the current controller action will be used.
211		* When the user makes change to any filter input, the current filtering inputs will be appended
212		* as GET parameters to this URL.
213		*/
214		public $filterUrl;
215		/**
216		* @var string additional jQuery selector for selecting filter input fields
217		*/
218		public $filterSelector;
219		/**
220		* @var string whether the filters should be displayed in the grid view. Valid values include:
221		*
222		* - [[FILTER_POS_HEADER]]: the filters will be displayed on top of each column's header cell.
223		* - [[FILTER_POS_BODY]]: the filters will be displayed right below each column's header cell.
224		* - [[FILTER_POS_FOOTER]]: the filters will be displayed below each column's footer cell.
225		*/
226		public $filterPosition = self::FILTER_POS_BODY;
227		/**
228		* @var array the HTML attributes for the filter row element.
229		* @see \yii\helpers\Html::renderTagAttributes() for details on how attributes are being rendered.
230		*/
231		public $filterRowOptions = ['class' => 'filters'];
232		/**
233		* @var array the options for rendering the filter error summary.
234		* Please refer to [[Html::errorSummary()]] for more details about how to specify the options.
235		* @see renderErrors()
236		*/
237		public $filterErrorSummaryOptions = ['class' => 'error-summary'];
238		/**
239		* @var array the options for rendering every filter error message.
240		* This is mainly used by [[Html::error()]] when rendering an error message next to every filter input field.
241		*/
242		public $filterErrorOptions = ['class' => 'help-block'];
243		/**
244		* @var string the layout that determines how different sections of the list view should be organized.
245		* The following tokens will be replaced with the corresponding section contents:
246		*
247		* - `{summary}`: the summary section. See [[renderSummary()]].
248		* - `{errors}`: the filter model error summary. See [[renderErrors()]].
249		* - `{items}`: the list items. See [[renderItems()]].
250		* - `{sorter}`: the sorter. See [[renderSorter()]].
251		* - `{pager}`: the pager. See [[renderPager()]].
252		*/
253		public $layout = "{summary}\n{items}\n{pager}";
254
255
256		/**
257		* Initializes the grid view.
258		* This method will initialize required property values and instantiate [[columns]] objects.
259		*/
260	6	public function init()
261		{
262	6	parent::init();
263	6	if ($this->formatter === null) {
264	6	$this->formatter = Yii::$app->getFormatter();
265	6	} elseif (is_array($this->formatter)) {
266		$this->formatter = Yii::createObject($this->formatter);
267		}
268	6	if (!$this->formatter instanceof Formatter) {
269		throw new InvalidConfigException('The "formatter" property must be either a Format object or a configuration array.');
270		}
271	6	if (!isset($this->filterRowOptions['id'])) {
272	6	$this->filterRowOptions['id'] = $this->options['id'] . '-filters';
273	6	}
274
275	6	$this->initColumns();
276	6	}
277
278		/**
279		* Runs the widget.
280		*/
281		public function run()
282		{
283		$id = $this->options['id'];
284		$options = Json::htmlEncode($this->getClientOptions());
285		$view = $this->getView();
286		GridViewAsset::register($view);
287		$view->registerJs("jQuery('#$id').yiiGridView($options);");
288		parent::run();
289		}
290
291		/**
292		* Renders validator errors of filter model.
293		* @return string the rendering result.
294		*/
295		public function renderErrors()
296		{
297		if ($this->filterModel instanceof Model && $this->filterModel->hasErrors()) {
298		return Html::errorSummary($this->filterModel, $this->filterErrorSummaryOptions);
299		} else {
300		return '';
301		}
302		}
303
304		/**
305		* @inheritdoc
306		*/
307		public function renderSection($name)
308		{
309		switch ($name) {
310		case '{errors}':
311		return $this->renderErrors();
312		default:
313		return parent::renderSection($name);
314		}
315		}
316
317		/**
318		* Returns the options for the grid view JS widget.
319		* @return array the options
320		*/
321		protected function getClientOptions()
322		{
323		$filterUrl = isset($this->filterUrl) ? $this->filterUrl : Yii::$app->request->url;
324		$id = $this->filterRowOptions['id'];
325		$filterSelector = "#$id input, #$id select";
326		if (isset($this->filterSelector)) {
327		$filterSelector .= ', ' . $this->filterSelector;
328		}
329
330		return [
331		'filterUrl' => Url::to($filterUrl),
332		'filterSelector' => $filterSelector,
333		];
334		}
335
336		/**
337		* Renders the data models for the grid view.
338		*/
339		public function renderItems()
340		{
341		$caption = $this->renderCaption();
342		$columnGroup = $this->renderColumnGroup();
343		$tableHeader = $this->showHeader ? $this->renderTableHeader() : false;
344		$tableBody = $this->renderTableBody();
345		$tableFooter = $this->showFooter ? $this->renderTableFooter() : false;
346		$content = array_filter([
347		$caption,
348		$columnGroup,
349		$tableHeader,
350		$tableFooter,
351		$tableBody,
352		]);
353
354		return Html::tag('table', implode("\n", $content), $this->tableOptions);
355		}
356
357		/**
358		* Renders the caption element.
359		* @return boolean\|string the rendered caption element or `false` if no caption element should be rendered.
360		*/
361		public function renderCaption()
362		{
363		if (!empty($this->caption)) {
364		return Html::tag('caption', $this->caption, $this->captionOptions);
365		} else {
366		return false;
367		}
368		}
369
370		/**
371		* Renders the column group HTML.
372		* @return boolean\|string the column group HTML or `false` if no column group should be rendered.
373		*/
374		public function renderColumnGroup()
375		{
376		$requireColumnGroup = false;
377		foreach ($this->columns as $column) {
378		/* @var $column Column */
379		if (!empty($column->options)) {
380		$requireColumnGroup = true;
381		break;
382		}
383		}
384		if ($requireColumnGroup) {
385		$cols = [];
386		foreach ($this->columns as $column) {
387		$cols[] = Html::tag('col', '', $column->options);
388		}
389
390		return Html::tag('colgroup', implode("\n", $cols));
391		} else {
392		return false;
393		}
394		}
395
396		/**
397		* Renders the table header.
398		* @return string the rendering result.
399		*/
400		public function renderTableHeader()
401		{
402		$cells = [];
403		foreach ($this->columns as $column) {
404		/* @var $column Column */
405		$cells[] = $column->renderHeaderCell();
406		}
407		$content = Html::tag('tr', implode('', $cells), $this->headerRowOptions);
408		if ($this->filterPosition === self::FILTER_POS_HEADER) {
409		$content = $this->renderFilters() . $content;
410		} elseif ($this->filterPosition === self::FILTER_POS_BODY) {
411		$content .= $this->renderFilters();
412		}
413
414		return "<thead>\n" . $content . "\n</thead>";
415		}
416
417		/**
418		* Renders the table footer.
419		* @return string the rendering result.
420		*/
421		public function renderTableFooter()
422		{
423		$cells = [];
424		foreach ($this->columns as $column) {
425		/* @var $column Column */
426		$cells[] = $column->renderFooterCell();
427		}
428		$content = Html::tag('tr', implode('', $cells), $this->footerRowOptions);
429		if ($this->filterPosition === self::FILTER_POS_FOOTER) {
430		$content .= $this->renderFilters();
431		}
432
433		return "<tfoot>\n" . $content . "\n</tfoot>";
434		}
435
436		/**
437		* Renders the filter.
438		* @return string the rendering result.
439		*/
440		public function renderFilters()
441		{
442		if ($this->filterModel !== null) {
443		$cells = [];
444		foreach ($this->columns as $column) {
445		/* @var $column Column */
446		$cells[] = $column->renderFilterCell();
447		}
448
449		return Html::tag('tr', implode('', $cells), $this->filterRowOptions);
450		} else {
451		return '';
452		}
453		}
454
455		/**
456		* Renders the table body.
457		* @return string the rendering result.
458		*/
459		public function renderTableBody()
460		{
461		$models = array_values($this->dataProvider->getModels());
462		$keys = $this->dataProvider->getKeys();
463		$rows = [];
464		foreach ($models as $index => $model) {
465		$key = $keys[$index];
466		if ($this->beforeRow !== null) {
467		$row = call_user_func($this->beforeRow, $model, $key, $index, $this);
468		if (!empty($row)) {
469		$rows[] = $row;
470		}
471		}
472
473		$rows[] = $this->renderTableRow($model, $key, $index);
474
475		if ($this->afterRow !== null) {
476		$row = call_user_func($this->afterRow, $model, $key, $index, $this);
477		if (!empty($row)) {
478		$rows[] = $row;
479		}
480		}
481		}
482
483		if (empty($rows)) {
484		$colspan = count($this->columns);
485
486		return "<tbody>\n<tr><td colspan=\"$colspan\">" . $this->renderEmpty() . "</td></tr>\n</tbody>";
487		} else {
488		return "<tbody>\n" . implode("\n", $rows) . "\n</tbody>";
489		}
490		}
491
492		/**
493		* Renders a table row with the given data model and key.
494		* @param mixed $model the data model to be rendered
495		* @param mixed $key the key associated with the data model
496		* @param integer $index the zero-based index of the data model among the model array returned by [[dataProvider]].
497		* @return string the rendering result
498		*/
499		public function renderTableRow($model, $key, $index)
500		{
501		$cells = [];
502		/* @var $column Column */
503		foreach ($this->columns as $column) {
504		$cells[] = $column->renderDataCell($model, $key, $index);
505		}
506		if ($this->rowOptions instanceof Closure) {
507		$options = call_user_func($this->rowOptions, $model, $key, $index, $this);
508		} else {
509		$options = $this->rowOptions;
510		}
511		$options['data-key'] = is_array($key) ? json_encode($key) : (string) $key;
512
513		return Html::tag('tr', implode('', $cells), $options);
514		}
515
516		/**
517		* Creates column objects and initializes them.
518		*/
519	6	protected function initColumns()
520		{
521	6	if (empty($this->columns)) {
522	2	$this->guessColumns();
523	2	}
524	6	foreach ($this->columns as $i => $column) {
525	4	if (is_string($column)) {
526	2	$column = $this->createDataColumn($column);
527	2	} else {
528	2	$column = Yii::createObject(array_merge([
529	2	'class' => $this->dataColumnClass ? : DataColumn::className(),
530	2	'grid' => $this,
531	2	], $column));
532		}
533	4	if (!$column->visible) {
534		unset($this->columns[$i]);
535		continue;
536		}
537	4	$this->columns[$i] = $column;
538	6	}
539	6	}
540
541		/**
542		* Creates a [[DataColumn]] object based on a string in the format of "attribute:format:label".
543		* @param string $text the column specification string
544		* @return DataColumn the column instance
545		* @throws InvalidConfigException if the column specification is invalid
546		*/
547	2	protected function createDataColumn($text)
548		{
549	2	if (!preg_match('/^([^:]+)(:(\w))?(:(.))?$/', $text, $matches)) {
550		throw new InvalidConfigException('The column must be specified in the format of "attribute", "attribute:format" or "attribute:format:label"');
551		}
552
553	2	return Yii::createObject([
554	2	'class' => $this->dataColumnClass ? : DataColumn::className(),
555	2	'grid' => $this,
556	2	'attribute' => $matches[1],
557	2	'format' => isset($matches[3]) ? $matches[3] : 'text',
558	2	'label' => isset($matches[5]) ? $matches[5] : null,
559	2	]);
560		}
561
562		/**
563		* This function tries to guess the columns to show from the given data
564		* if [[columns]] are not explicitly specified.
565		*/
566	2	protected function guessColumns()
567		{
568	2	$models = $this->dataProvider->getModels();
569	2	$model = reset($models);
570	2	if (is_array($model) \|\| is_object($model)) {
571		foreach ($model as $name => $value) {
572		$this->columns[] = (string) $name;
573		}
574		}
575	2	}
576		}
577

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