Yii2 DetailView PHP 技术 Yii2 DetailView格式化数据，value不能使用匿名函数的问题 2018-09-26 16:00 3207 更新于 2018-09-26 16:00 使用Yii小部件格式化数据的时候，value不能是匿名函数，简直不方便啊，`GridView`就可以，查了下文档 原来要 Yii2 版本是`2.0.11`以上才支持匿名函数的写法 [文档原文](https://www.yiiframework.com/doc/api/2.0/yii-widgets-detailview#$attributes-detail "文档原文") >value: the value to be displayed. If this is not specified, it will be retrieved from $model using the attribute name by calling yii\helpers\ArrayHelper::getValue(). Note that this value will be formatted into a displayable text according to the format option. Since version 2.0.11 it can be defined as closure with the following parameters: function ($model, $widget) 去下个新版的吧，我这里有 2.0.15版本的 `DetailView.php` ```php <?php /** * @link http://www.yiiframework.com/ * @copyright Copyright (c) 2008 Yii Software LLC * @license http://www.yiiframework.com/license/ */ namespace yii\widgets; use Yii; use yii\base\Arrayable; use yii\base\InvalidConfigException; use yii\base\Model; use yii\base\Widget; use yii\helpers\ArrayHelper; use yii\helpers\Html; use yii\helpers\Inflector; use yii\i18n\Formatter; /** * DetailView displays the detail of a single data [[model]]. * * DetailView is best used for displaying a model in a regular format (e.g. each model attribute * is displayed as a row in a table.) The model can be either an instance of [[Model]] * or an associative array. * * DetailView uses the [[attributes]] property to determines which model attributes * should be displayed and how they should be formatted. * * A typical usage of DetailView is as follows: * * * echo DetailView::widget([ * 'model' => $model, * 'attributes' => [ * 'title', // title attribute (in plain text) * 'description:html', // description attribute in HTML * [ // the owner name of the model * 'label' => 'Owner', * 'value' => $model->owner->name, * ], * 'created_at:datetime', // creation date formatted as datetime * ], * ]); * * * For more details and usage information on DetailView, see the [guide article on data widgets](guide:output-data-widgets). * * @author Qiang Xue <qiang.xue@gmail.com> * @since 2.0 */ class DetailView extends Widget { /** * @var array|object the data model whose details are to be displayed. This can be a [[Model]] instance, * an associative array, an object that implements [[Arrayable]] interface or simply an object with defined * public accessible non-static properties. */ public $model; /** * @var array a list of attributes to be displayed in the detail view. Each array element * represents the specification for displaying one particular attribute. * * An attribute can be specified as a string in the format of `attribute`, `attribute:format` or `attribute:format:label`, * where `attribute` refers to the attribute name, and `format` represents the format of the attribute. The `format` * is passed to the [[Formatter::format()]] method to format an attribute value into a displayable text. * Please refer to [[Formatter]] for the supported types. Both `format` and `label` are optional. * They will take default values if absent. * * An attribute can also be specified in terms of an array with the following elements: * * - `attribute`: the attribute name. This is required if either `label` or `value` is not specified. * - `label`: the label associated with the attribute. If this is not specified, it will be generated from the attribute name. * - `value`: the value to be displayed. If this is not specified, it will be retrieved from [[model]] using the attribute name * by calling [[ArrayHelper::getValue()]]. Note that this value will be formatted into a displayable text * according to the `format` option. Since version 2.0.11 it can be defined as closure with the following * parameters: * * * function ($model, $widget) * * * `$model` refers to displayed model and `$widget` is an instance of `DetailView` widget. * * - `format`: the type of the value that determines how the value would be formatted into a displayable text. * Please refer to [[Formatter]] for supported types and [[Formatter::format()]] on how to specify this value. * - `visible`: whether the attribute is visible. If set to `false`, the attribute will NOT be displayed. * - `contentOptions`: the HTML attributes to customize value tag. For example: `['class' => 'bg-red']`. * Please refer to [[\yii\helpers\BaseHtml::renderTagAttributes()]] for the supported syntax. * - `captionOptions`: the HTML attributes to customize label tag. For example: `['class' => 'bg-red']`. * Please refer to [[\yii\helpers\BaseHtml::renderTagAttributes()]] for the supported syntax. */ public $attributes; /** * @var string|callable the template used to render a single attribute. If a string, the token `{label}` * and `{value}` will be replaced with the label and the value of the corresponding attribute. * If a callback (e.g. an anonymous function), the signature must be as follows: * * * function ($attribute, $index, $widget) * * * where `$attribute` refer to the specification of the attribute being rendered, `$index` is the zero-based * index of the attribute in the [[attributes]] array, and `$widget` refers to this widget instance. * * Since Version 2.0.10, the tokens `{captionOptions}` and `{contentOptions}` are available, which will represent * HTML attributes of HTML container elements for the label and value. */ public $template = '<tr><th{captionOptions}>{label}</th><td{contentOptions}>{value}</td></tr>'; /** * @var array the HTML attributes for the container tag of this widget. The `tag` option specifies * what container tag should be used. It defaults to `table` if not set. * @see \yii\helpers\Html::renderTagAttributes() for details on how attributes are being rendered. */ public $options = ['class' => 'table table-striped table-bordered detail-view']; /** * @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 $formatter; /** * Initializes the detail view. * This method will initialize required property values. */ public function init() { parent::init(); if ($this->model === null) { throw new InvalidConfigException('Please specify the "model" property.'); } 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.'); } $this->normalizeAttributes(); if (!isset($this->options['id'])) { $this->options['id'] = $this->getId(); } } /** * Renders the detail view. * This is the main entry of the whole detail view rendering. */ public function run() { $rows = []; $i = 0; foreach ($this->attributes as $attribute) { $rows[] = $this->renderAttribute($attribute, $i++); } $options = $this->options; $tag = ArrayHelper::remove($options, 'tag', 'table'); echo Html::tag($tag, implode("\n", $rows), $options); } /** * Renders a single attribute. * @param array $attribute the specification of the attribute to be rendered. * @param int $index the zero-based index of the attribute in the [[attributes]] array * @return string the rendering result */ protected function renderAttribute($attribute, $index) { if (is_string($this->template)) { $captionOptions = Html::renderTagAttributes(ArrayHelper::getValue($attribute, 'captionOptions', [])); $contentOptions = Html::renderTagAttributes(ArrayHelper::getValue($attribute, 'contentOptions', [])); return strtr($this->template, [ '{label}' => $attribute['label'], '{value}' => $this->formatter->format($attribute['value'], $attribute['format']), '{captionOptions}' => $captionOptions, '{contentOptions}' => $contentOptions, ]); } return call_user_func($this->template, $attribute, $index, $this); } /** * Normalizes the attribute specifications. * @throws InvalidConfigException */ protected function normalizeAttributes() { if ($this->attributes === null) { if ($this->model instanceof Model) { $this->attributes = $this->model->attributes(); } elseif (is_object($this->model)) { $this->attributes = $this->model instanceof Arrayable ? array_keys($this->model->toArray()) : array_keys(get_object_vars($this->model)); } elseif (is_array($this->model)) { $this->attributes = array_keys($this->model); } else { throw new InvalidConfigException('The "model" property must be either an array or an object.'); } sort($this->attributes); } foreach ($this->attributes as $i => $attribute) { if (is_string($attribute)) { if (!preg_match('/^([^:]+)(:(\w*))?(:(.*))?$/', $attribute, $matches)) { throw new InvalidConfigException('The attribute must be specified in the format of "attribute", "attribute:format" or "attribute:format:label"'); } $attribute = [ 'attribute' => $matches[1], 'format' => isset($matches[3]) ? $matches[3] : 'text', 'label' => isset($matches[5]) ? $matches[5] : null, ]; } if (!is_array($attribute)) { throw new InvalidConfigException('The attribute configuration must be an array.'); } if (isset($attribute['visible']) && !$attribute['visible']) { unset($this->attributes[$i]); continue; } if (!isset($attribute['format'])) { $attribute['format'] = 'text'; } if (isset($attribute['attribute'])) { $attributeName = $attribute['attribute']; if (!isset($attribute['label'])) { $attribute['label'] = $this->model instanceof Model ? $this->model->getAttributeLabel($attributeName) : Inflector::camel2words($attributeName, true); } if (!array_key_exists('value', $attribute)) { $attribute['value'] = ArrayHelper::getValue($this->model, $attributeName); } } elseif (!isset($attribute['label']) || !array_key_exists('value', $attribute)) { throw new InvalidConfigException('The attribute configuration requires the "attribute" element to determine the value and display label.'); } if ($attribute['value'] instanceof \Closure) { $attribute['value'] = call_user_func($attribute['value'], $this->model, $this); } $this->attributes[$i] = $attribute; } } } ``` 主要改动就是最后几行代码 ``` if ($attribute['value'] instanceof \Closure) { $attribute['value'] = call_user_func($attribute['value'], $this->model, $this); } ```
