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- <?php
- /**
- * CGridView class file.
- *
- * @author Qiang Xue <qiang.xue@gmail.com>
- * @link http://www.yiiframework.com/
- * @copyright 2008-2013 Yii Software LLC
- * @license http://www.yiiframework.com/license/
- */
- Yii::import('zii.widgets.CBaseListView');
- Yii::import('zii.widgets.grid.CDataColumn');
- Yii::import('zii.widgets.grid.CLinkColumn');
- Yii::import('zii.widgets.grid.CButtonColumn');
- Yii::import('zii.widgets.grid.CCheckBoxColumn');
- /**
- * CGridView displays a list of data items in terms of a table.
- *
- * Each row of the table represents the data of a single data item, and a column usually represents
- * an attribute of the item (some columns may correspond to complex expression of attributes or static text).
- *
- * CGridView supports both sorting and pagination of the data items. The sorting
- * and pagination can be done in AJAX mode or normal page request. A benefit of using CGridView is that
- * when the user browser disables JavaScript, the sorting and pagination automatically degenerate
- * to normal page requests and are still functioning as expected.
- *
- * CGridView should be used together with a {@link IDataProvider data provider}, preferably a
- * {@link CActiveDataProvider}.
- *
- * The minimal code needed to use CGridView is as follows:
- *
- * <pre>
- * $dataProvider=new CActiveDataProvider('Post');
- *
- * $this->widget('zii.widgets.grid.CGridView', array(
- * 'dataProvider'=>$dataProvider,
- * ));
- * </pre>
- *
- * The above code first creates a data provider for the <code>Post</code> ActiveRecord class.
- * It then uses CGridView to display every attribute in every <code>Post</code> instance.
- * The displayed table is equiped with sorting and pagination functionality.
- *
- * In order to selectively display attributes with different formats, we may configure the
- * {@link CGridView::columns} property. For example, we may specify only the <code>title</code>
- * and <code>create_time</code> attributes to be displayed, and the <code>create_time</code>
- * should be properly formatted to show as a time. We may also display the attributes of the related
- * objects using the dot-syntax as shown below:
- *
- * <pre>
- * $this->widget('zii.widgets.grid.CGridView', array(
- * 'dataProvider'=>$dataProvider,
- * 'columns'=>array(
- * 'title', // display the 'title' attribute
- * 'category.name', // display the 'name' attribute of the 'category' relation
- * 'content:html', // display the 'content' attribute as purified HTML
- * array( // display 'create_time' using an expression
- * 'name'=>'create_time',
- * 'value'=>'date("M j, Y", $data->create_time)',
- * ),
- * array( // display 'author.username' using an expression
- * 'name'=>'authorName',
- * 'value'=>'$data->author->username',
- * ),
- * array( // display a column with "view", "update" and "delete" buttons
- * 'class'=>'CButtonColumn',
- * ),
- * ),
- * ));
- * </pre>
- *
- * Please refer to {@link columns} for more details about how to configure this property.
- *
- * @property boolean $hasFooter Whether the table should render a footer.
- * This is true if any of the {@link columns} has a true {@link CGridColumn::hasFooter} value.
- * @property CFormatter $formatter The formatter instance. Defaults to the 'format' application component.
- *
- * @author Qiang Xue <qiang.xue@gmail.com>
- * @package zii.widgets.grid
- * @since 1.1
- */
- class CGridView extends CBaseListView
- {
- const FILTER_POS_HEADER='header';
- const FILTER_POS_FOOTER='footer';
- const FILTER_POS_BODY='body';
- private $_formatter;
- /**
- * @var array grid column configuration. Each array element represents the configuration
- * for one particular grid column which can be either a string or an array.
- *
- * When a column is specified as a string, it should be in the format of "name:type:header",
- * where "type" and "header" are optional. A {@link CDataColumn} instance will be created in this case,
- * whose {@link CDataColumn::name}, {@link CDataColumn::type} and {@link CDataColumn::header}
- * properties will be initialized accordingly.
- *
- * When a column is specified as an array, it will be used to create a grid column instance, where
- * the 'class' element specifies the column class name (defaults to {@link CDataColumn} if absent).
- * Currently, these official column classes are provided: {@link CDataColumn},
- * {@link CLinkColumn}, {@link CButtonColumn} and {@link CCheckBoxColumn}.
- */
- public $columns=array();
- /**
- * @var array the CSS class names for the table body rows. If multiple CSS class names are given,
- * they will be assigned to the rows sequentially and repeatedly. This property is ignored
- * if {@link rowCssClassExpression} is set. Defaults to <code>array('odd', 'even')</code>.
- * @see rowCssClassExpression
- */
- public $rowCssClass=array('odd','even');
- /**
- * @var string a PHP expression that is evaluated for every table body row and whose result
- * is used as the CSS class name for the row. In this expression, you can use the following variables:
- * <ul>
- * <li><code>$row</code> the row number (zero-based)</li>
- * <li><code>$data</code> the data model for the row</li>
- * <li><code>$this</code> the grid view object</li>
- * </ul>
- * The PHP expression will be evaluated using {@link evaluateExpression}.
- *
- * A PHP expression can be any PHP code that has a value. To learn more about what an expression is,
- * please refer to the {@link http://www.php.net/manual/en/language.expressions.php php manual}.
- * @see rowCssClass
- * @deprecated in 1.1.13 in favor of {@link rowHtmlOptionsExpression}
- */
- public $rowCssClassExpression;
- /**
- * @var string a PHP expression that is evaluated for every table body row and whose result
- * is used as additional HTML attributes for the row. The expression should return an
- * array whose key value pairs correspond to html attribute and value.
- * In this expression, you can use the following variables:
- * <ul>
- * <li><code>$row</code> the row number (zero-based)</li>
- * <li><code>$data</code> the data model for the row</li>
- * <li><code>$this</code> the grid view object</li>
- * </ul>
- * The PHP expression will be evaluated using {@link evaluateExpression}.
- *
- * A PHP expression can be any PHP code that has a value. To learn more about what an expression is,
- * please refer to the {@link http://www.php.net/manual/en/language.expressions.php php manual}.
- * @since 1.1.13
- */
- public $rowHtmlOptionsExpression;
- /**
- * @var boolean whether to display the table even when there is no data. Defaults to true.
- * The {@link emptyText} will be displayed to indicate there is no data.
- */
- public $showTableOnEmpty=true;
- /**
- * @var mixed the ID of the container whose content may be updated with an AJAX response.
- * Defaults to null, meaning the container for this grid view instance.
- * If it is set false, it means sorting and pagination will be performed in normal page requests
- * instead of AJAX requests. If the sorting and pagination should trigger the update of multiple
- * containers' content in AJAX fashion, these container IDs may be listed here (separated with comma).
- */
- public $ajaxUpdate;
- /**
- * @var string the jQuery selector of the HTML elements that may trigger AJAX updates when they are clicked.
- * These tokens are recognized: {page} and {sort}. They will be replaced with the pagination and sorting links selectors.
- * Defaults to '{page}, {sort}', that means that the pagination links and the sorting links will trigger AJAX updates.
- * Tokens are available from 1.1.11
- *
- * Note: if this value is empty an exception will be thrown.
- *
- * Example (adding a custom selector to the default ones):
- * <pre>
- * ...
- * 'updateSelector'=>'{page}, {sort}, #mybutton',
- * ...
- * </pre>
- * @since 1.1.7
- */
- public $updateSelector='{page}, {sort}';
- /**
- * @var string a javascript function that will be invoked if an AJAX update error occurs.
- *
- * The function signature is <code>function(xhr, textStatus, errorThrown, errorMessage)</code>
- * <ul>
- * <li><code>xhr</code> is the XMLHttpRequest object.</li>
- * <li><code>textStatus</code> is a string describing the type of error that occurred.
- * Possible values (besides null) are "timeout", "error", "notmodified" and "parsererror"</li>
- * <li><code>errorThrown</code> is an optional exception object, if one occurred.</li>
- * <li><code>errorMessage</code> is the CGridView default error message derived from xhr and errorThrown.
- * Useful if you just want to display this error differently. CGridView by default displays this error with an javascript.alert()</li>
- * </ul>
- * Note: This handler is not called for JSONP requests, because they do not use an XMLHttpRequest.
- *
- * Example (add in a call to CGridView):
- * <pre>
- * ...
- * 'ajaxUpdateError'=>'function(xhr,ts,et,err,id){ $("#"+id).text(err); }',
- * ...
- * </pre>
- */
- public $ajaxUpdateError;
- /**
- * @var string the name of the GET variable that indicates the request is an AJAX request triggered
- * by this widget. Defaults to 'ajax'. This is effective only when {@link ajaxUpdate} is not false.
- */
- public $ajaxVar='ajax';
- /**
- * @var mixed the URL for the AJAX requests should be sent to. {@link CHtml::normalizeUrl()} will be
- * called on this property. If not set, the current page URL will be used for AJAX requests.
- * @since 1.1.8
- */
- public $ajaxUrl;
- /**
- * @var string the type ('GET' or 'POST') of the AJAX requests. If not set, 'GET' will be used.
- * You can set this to 'POST' if you are filtering by many fields at once and have a problem with GET query string length.
- * Note that in POST mode direct links and {@link enableHistory} feature may not work correctly!
- * @since 1.1.14
- */
- public $ajaxType;
- /**
- * @var string a javascript function that will be invoked before an AJAX update occurs.
- * The function signature is <code>function(id,options)</code> where 'id' refers to the ID of the grid view,
- * 'options' the AJAX request options (see jQuery.ajax api manual).
- */
- public $beforeAjaxUpdate;
- /**
- * @var string a javascript function that will be invoked after a successful AJAX response is received.
- * The function signature is <code>function(id, data)</code> where 'id' refers to the ID of the grid view,
- * 'data' the received ajax response data.
- */
- public $afterAjaxUpdate;
- /**
- * @var string a javascript function that will be invoked after the row selection is changed.
- * The function signature is <code>function(id)</code> where 'id' refers to the ID of the grid view.
- * In this function, you may use <code>$(gridID).yiiGridView('getSelection')</code> to get the key values
- * of the currently selected rows (gridID is the DOM selector of the grid).
- * @see selectableRows
- */
- public $selectionChanged;
- /**
- * @var integer the number of table body rows that can be selected. If 0, it means rows cannot be selected.
- * If 1, only one row can be selected. If 2 or any other number, it means multiple rows can be selected.
- * A selected row will have a CSS class named 'selected'. You may also call the JavaScript function
- * <code>$(gridID).yiiGridView('getSelection')</code> to retrieve the key values of the currently selected
- * rows (gridID is the DOM selector of the grid).
- */
- public $selectableRows=1;
- /**
- * @var string the base script URL for all grid view resources (eg javascript, CSS file, images).
- * Defaults to null, meaning using the integrated grid view resources (which are published as assets).
- */
- public $baseScriptUrl;
- /**
- * @var string the URL of the CSS file used by this grid view. Defaults to null, meaning using the integrated
- * CSS file. If this is set false, you are responsible to explicitly include the necessary CSS file in your page.
- */
- public $cssFile;
- /**
- * @var string the text to be displayed in a data cell when a data value is null. This property will NOT be HTML-encoded
- * when rendering. Defaults to an HTML blank.
- */
- public $nullDisplay=' ';
- /**
- * @var string the text to be displayed in an empty grid cell. This property will NOT be HTML-encoded when rendering. Defaults to an HTML blank.
- * This differs from {@link nullDisplay} in that {@link nullDisplay} is only used by {@link CDataColumn} to render
- * null data values.
- * @since 1.1.7
- */
- public $blankDisplay=' ';
- /**
- * @var string the CSS class name that will be assigned to the widget container element
- * when the widget is updating its content via AJAX. Defaults to 'grid-view-loading'.
- * @since 1.1.1
- */
- public $loadingCssClass='grid-view-loading';
- /**
- * @var string the jQuery selector of filter input fields.
- * The token '{filter}' is recognized and it will be replaced with the grid filters selector.
- * Defaults to '{filter}'.
- *
- * Note: if this value is empty an exception will be thrown.
- *
- * Example (adding a custom selector to the default one):
- * <pre>
- * ...
- * 'filterSelector'=>'{filter}, #myfilter',
- * ...
- * </pre>
- * @since 1.1.13
- */
- public $filterSelector='{filter}';
- /**
- * @var string the CSS class name for the table row element containing all filter input fields. Defaults to 'filters'.
- * @see filter
- * @since 1.1.1
- */
- public $filterCssClass='filters';
- /**
- * @var string whether the filters should be displayed in the grid view. Valid values include:
- * <ul>
- * <li>header: the filters will be displayed on top of each column's header cell.</li>
- * <li>body: the filters will be displayed right below each column's header cell.</li>
- * <li>footer: the filters will be displayed below each column's footer cell.</li>
- * </ul>
- * @see filter
- * @since 1.1.1
- */
- public $filterPosition='body';
- /**
- * @var CModel the model instance 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 {@link CDataColumn::name}
- * property set or have {@link CDataColumn::filter} as the HTML code for the input field.
- * When this property is not set (null) the filtering is disabled.
- * @since 1.1.1
- */
- public $filter;
- /**
- * @var boolean whether to hide the header cells of the grid. When this is true, header cells
- * will not be rendered, which means the grid cannot be sorted anymore since the sort links are located
- * in the header. Defaults to false.
- * @since 1.1.1
- */
- public $hideHeader=false;
- /**
- * @var boolean whether to leverage the {@link https://developer.mozilla.org/en/DOM/window.history DOM history object}. Set this property to true
- * to persist state of grid across page revisits. Note, there are two limitations for this feature:
- * <ul>
- * <li>this feature is only compatible with browsers that support HTML5.</li>
- * <li>expect unexpected functionality (e.g. multiple ajax calls) if there is more than one grid/list on a single page with enableHistory turned on.</li>
- * </ul>
- * @since 1.1.11
- */
- public $enableHistory=false;
- /**
- * Initializes the grid view.
- * This method will initialize required property values and instantiate {@link columns} objects.
- */
- public function init()
- {
- parent::init();
- if(empty($this->updateSelector))
- throw new CException(Yii::t('zii','The property updateSelector should be defined.'));
- if(empty($this->filterSelector))
- throw new CException(Yii::t('zii','The property filterSelector should be defined.'));
- if(!isset($this->htmlOptions['class']))
- $this->htmlOptions['class']='grid-view';
- if($this->baseScriptUrl===null)
- $this->baseScriptUrl=Yii::app()->getAssetManager()->publish(Yii::getPathOfAlias('zii.widgets.assets')).'/gridview';
- if($this->cssFile!==false)
- {
- if($this->cssFile===null)
- $this->cssFile=$this->baseScriptUrl.'/styles.css';
- Yii::app()->getClientScript()->registerCssFile($this->cssFile);
- }
- $this->initColumns();
- }
- /**
- * Creates column objects and initializes them.
- */
- protected function initColumns()
- {
- if($this->columns===array())
- {
- if($this->dataProvider instanceof CActiveDataProvider)
- $this->columns=$this->dataProvider->model->attributeNames();
- elseif($this->dataProvider instanceof IDataProvider)
- {
- // use the keys of the first row of data as the default columns
- $data=$this->dataProvider->getData();
- if(isset($data[0]) && is_array($data[0]))
- $this->columns=array_keys($data[0]);
- }
- }
- $id=$this->getId();
- foreach($this->columns as $i=>$column)
- {
- if(is_string($column))
- $column=$this->createDataColumn($column);
- else
- {
- if(!isset($column['class']))
- $column['class']='CDataColumn';
- $column=Yii::createComponent($column, $this);
- }
- if(!$column->visible)
- {
- unset($this->columns[$i]);
- continue;
- }
- if($column->id===null)
- $column->id=$id.'_c'.$i;
- $this->columns[$i]=$column;
- }
- foreach($this->columns as $column)
- $column->init();
- }
- /**
- * Creates a {@link CDataColumn} based on a shortcut column specification string.
- * @param string $text the column specification string
- * @return CDataColumn the column instance
- */
- protected function createDataColumn($text)
- {
- if(!preg_match('/^([\w\.]+)(:(\w*))?(:(.*))?$/',$text,$matches))
- throw new CException(Yii::t('zii','The column must be specified in the format of "Name:Type:Label", where "Type" and "Label" are optional.'));
- $column=new CDataColumn($this);
- $column->name=$matches[1];
- if(isset($matches[3]) && $matches[3]!=='')
- $column->type=$matches[3];
- if(isset($matches[5]))
- $column->header=$matches[5];
- return $column;
- }
- /**
- * Registers necessary client scripts.
- */
- public function registerClientScript()
- {
- $id=$this->getId();
- if($this->ajaxUpdate===false)
- $ajaxUpdate=false;
- else
- $ajaxUpdate=array_unique(preg_split('/\s*,\s*/',$this->ajaxUpdate.','.$id,-1,PREG_SPLIT_NO_EMPTY));
- $options=array(
- 'ajaxUpdate'=>$ajaxUpdate,
- 'ajaxVar'=>$this->ajaxVar,
- 'pagerClass'=>$this->pagerCssClass,
- 'loadingClass'=>$this->loadingCssClass,
- 'filterClass'=>$this->filterCssClass,
- 'tableClass'=>$this->itemsCssClass,
- 'selectableRows'=>$this->selectableRows,
- 'enableHistory'=>$this->enableHistory,
- 'updateSelector'=>$this->updateSelector,
- 'filterSelector'=>$this->filterSelector
- );
- if($this->ajaxUrl!==null)
- $options['url']=CHtml::normalizeUrl($this->ajaxUrl);
- if($this->ajaxType!==null) {
- $options['ajaxType']=strtoupper($this->ajaxType);
- $request=Yii::app()->getRequest();
- if ($options['ajaxType']=='POST' && $request->enableCsrfValidation) {
- $options['csrfTokenName']=$request->csrfTokenName;
- $options['csrfToken']=$request->getCsrfToken();
- }
- }
- if($this->enablePagination)
- $options['pageVar']=$this->dataProvider->getPagination()->pageVar;
- foreach(array('beforeAjaxUpdate', 'afterAjaxUpdate', 'ajaxUpdateError', 'selectionChanged') as $event)
- {
- if($this->$event!==null)
- {
- if($this->$event instanceof CJavaScriptExpression)
- $options[$event]=$this->$event;
- else
- $options[$event]=new CJavaScriptExpression($this->$event);
- }
- }
- $options=CJavaScript::encode($options);
- $cs=Yii::app()->getClientScript();
- $cs->registerCoreScript('jquery');
- $cs->registerCoreScript('bbq');
- if($this->enableHistory)
- $cs->registerCoreScript('history');
- $cs->registerScriptFile($this->baseScriptUrl.'/jquery.yiigridview.js',CClientScript::POS_END);
- $cs->registerScript(__CLASS__.'#'.$id,"jQuery('#$id').yiiGridView($options);");
- }
- /**
- * Renders the data items for the grid view.
- */
- public function renderItems()
- {
- if($this->dataProvider->getItemCount()>0 || $this->showTableOnEmpty)
- {
- echo "<table class=\"{$this->itemsCssClass}\">\n";
- $this->renderTableHeader();
- ob_start();
- $this->renderTableBody();
- $body=ob_get_clean();
- $this->renderTableFooter();
- echo $body; // TFOOT must appear before TBODY according to the standard.
- echo "</table>";
- }
- else
- $this->renderEmptyText();
- }
- /**
- * Renders the table header.
- */
- public function renderTableHeader()
- {
- if(!$this->hideHeader)
- {
- echo "<thead>\n";
- if($this->filterPosition===self::FILTER_POS_HEADER)
- $this->renderFilter();
- echo "<tr>\n";
- foreach($this->columns as $column)
- $column->renderHeaderCell();
- echo "</tr>\n";
- if($this->filterPosition===self::FILTER_POS_BODY)
- $this->renderFilter();
- echo "</thead>\n";
- }
- elseif($this->filter!==null && ($this->filterPosition===self::FILTER_POS_HEADER || $this->filterPosition===self::FILTER_POS_BODY))
- {
- echo "<thead>\n";
- $this->renderFilter();
- echo "</thead>\n";
- }
- }
- /**
- * Renders the filter.
- * @since 1.1.1
- */
- public function renderFilter()
- {
- if($this->filter!==null)
- {
- echo "<tr class=\"{$this->filterCssClass}\">\n";
- foreach($this->columns as $column)
- $column->renderFilterCell();
- echo "</tr>\n";
- }
- }
- /**
- * Renders the table footer.
- */
- public function renderTableFooter()
- {
- $hasFilter=$this->filter!==null && $this->filterPosition===self::FILTER_POS_FOOTER;
- $hasFooter=$this->getHasFooter();
- if($hasFilter || $hasFooter)
- {
- echo "<tfoot>\n";
- if($hasFooter)
- {
- echo "<tr>\n";
- foreach($this->columns as $column)
- $column->renderFooterCell();
- echo "</tr>\n";
- }
- if($hasFilter)
- $this->renderFilter();
- echo "</tfoot>\n";
- }
- }
- /**
- * Renders the table body.
- */
- public function renderTableBody()
- {
- $data=$this->dataProvider->getData();
- $n=count($data);
- echo "<tbody>\n";
- if($n>0)
- {
- for($row=0;$row<$n;++$row)
- $this->renderTableRow($row);
- }
- else
- {
- echo '<tr><td colspan="'.count($this->columns).'" class="empty">';
- $this->renderEmptyText();
- echo "</td></tr>\n";
- }
- echo "</tbody>\n";
- }
- /**
- * Renders a table body row.
- * @param integer $row the row number (zero-based).
- */
- public function renderTableRow($row)
- {
- $htmlOptions=array();
- if($this->rowHtmlOptionsExpression!==null)
- {
- $data=$this->dataProvider->data[$row];
- $options=$this->evaluateExpression($this->rowHtmlOptionsExpression,array('row'=>$row,'data'=>$data));
- if(is_array($options))
- $htmlOptions = $options;
- }
- if($this->rowCssClassExpression!==null)
- {
- $data=$this->dataProvider->data[$row];
- $class=$this->evaluateExpression($this->rowCssClassExpression,array('row'=>$row,'data'=>$data));
- }
- elseif(is_array($this->rowCssClass) && ($n=count($this->rowCssClass))>0)
- $class=$this->rowCssClass[$row%$n];
- if(!empty($class))
- {
- if(isset($htmlOptions['class']))
- $htmlOptions['class'].=' '.$class;
- else
- $htmlOptions['class']=$class;
- }
- echo CHtml::openTag('tr', $htmlOptions)."\n";
- foreach($this->columns as $column)
- $this->renderDataCell($column, $row);
- echo "</tr>\n";
- }
- /**
- * A seam for people extending CGridView to be able to hook onto the data cell rendering process.
- *
- * By overriding only this method we will not need to copypaste and modify the whole entirety of `renderTableRow`.
- * Or override `renderDataCell()` method of all possible CGridColumn descendants.
- *
- * @param CGridColumn $column The Column instance to
- * @param integer $row
- * @since 1.1.17
- */
- protected function renderDataCell($column, $row)
- {
- $column->renderDataCell($row);
- }
-
- /**
- * @return boolean whether the table should render a footer.
- * This is true if any of the {@link columns} has a true {@link CGridColumn::hasFooter} value.
- */
- public function getHasFooter()
- {
- foreach($this->columns as $column)
- if($column->getHasFooter())
- return true;
- return false;
- }
- /**
- * @return CFormatter the formatter instance. Defaults to the 'format' application component.
- */
- public function getFormatter()
- {
- if($this->_formatter===null)
- $this->_formatter=Yii::app()->format;
- return $this->_formatter;
- }
- /**
- * @param CFormatter $value the formatter instance
- */
- public function setFormatter($value)
- {
- $this->_formatter=$value;
- }
- }
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