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
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
/**
* @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:
*
* ```php
* 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 $model;
/**
* @var array a list of attributes to be displayed in the detail view. Each array element
* represents the specification for displaying one particular attribute.
*
* An attribute can be specified as a string in the format of `attribute`, `attribute:format` or `attribute:format:label`,
* where `attribute` refers to the attribute name, and `format` represents the format of the attribute. The `format`
* is passed to the [[Formatter::format()]] method to format an attribute value into a displayable text.
* Please refer to [[Formatter]] for the supported types. Both `format` and `label` are optional.
* They will take default values if absent.
*
* An attribute can also be specified in terms of an array with the following elements:
*
* - `attribute`: the attribute name. This is required if either `label` or `value` is not specified.
* - `label`: the label associated with the attribute. If this is not specified, it will be generated from the attribute name.
* - `value`: the value to be displayed. If this is not specified, it will be retrieved from [[model]] using the attribute name
* by calling [[ArrayHelper::getValue()]]. Note that this value will be formatted into a displayable text
* according to the `format` option. Since version 2.0.11 it can be defined as closure with the following
* parameters:
*
* ```php
* function ($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 $attributes;
/**
* @var string|callable the template used to render a single attribute. If a string, the token `{label}`
* and `{value}` will be replaced with the label and the value of the corresponding attribute.
* If a callback (e.g. an anonymous function), the signature must be as follows:
*
* ```php
* function ($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);
}