Commit 36eff141 by Qiang Xue

Added DetailView.

parent f043aa5e
<?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\Formatter;
use yii\base\InvalidConfigException;
use yii\base\Model;
use yii\base\Widget;
use yii\helpers\ArrayHelper;
use yii\helpers\Html;
use yii\helpers\Inflector;
/**
* 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
* 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:
*
* ~~~
* \yii\widgets\DetailView::widget(array(
* 'data' => $model,
* 'attributes' => array(
* 'title', // title attribute (in plain text)
* 'description:html', // description attribute in HTML
* array( // the owner name of the model
* 'label' => 'Owner',
* 'value' => $model->owner->name,
* ),
* ),
* ));
* ~~~
*
* @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 either a [[Model]] instance
* or an associative array.
*/
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 "Name" or "Name:Type", where "Name" refers to
* the attribute name, and "Type" represents the type of the attribute. The "Type" is passed to the [[Formatter::format()]]
* method to format an attribute value into a displayable text. Please refer to [[Formatter]] for the supported types.
*
* An attribute can also be specified in terms of an array with the following elements:
*
* - name: 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 "type" option.
* - type: the type of the value that determines how the value would be formatted into a displayable text.
* Please refer to [[Formatter]] for supported types.
* - visible: whether the attribute is visible. If set to `false`, the attribute will be displayed.
*/
public $attributes;
/**
* @var string|\Closure the template used to render a single attribute. If a string, the token `{label}`
* and `{value}` will be replaced with the label and the value of the corresponding attribute.
* If an anonymous function, the signature must be as follows:
*
* ~~~
* function ($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.
*/
public $template = "<tr><th>{label}</th><td>{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.
*/
public $options = array('class' => 'table table-striped');
/**
* @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 $formatter;
/**
* Initializes the detail view.
* This method will initialize required property values.
*/
public function init()
{
if ($this->model === null) {
throw new InvalidConfigException('Please specify the "data" property.');
}
if ($this->formatter == null) {
$this->formatter = Yii::$app->getFormatter();
} elseif (is_array($this->formatter)) {
$this->formatter = Yii::createObject($this->formatter);
} elseif (!$this->formatter instanceof Formatter) {
throw new InvalidConfigException('The "formatter" property must be either a Format object or a configuration array.');
}
$this->normalizeAttributes();
}
/**
* Renders the detail view.
* This is the main entry of the whole detail view rendering.
*/
public function run()
{
$rows = array();
$i = 0;
foreach ($this->attributes as $attribute) {
$rows[] = $this->renderAttribute($attribute, $i++);
}
$tag = ArrayHelper::remove($this->options, 'tag', 'table');
echo Html::tag($tag, implode("\n", $rows), $this->options);
}
/**
* Renders a single attribute.
* @param array $attribute the specification of the attribute to be rendered.
* @param integer $index the zero-based index of the attribute in the [[attributes]] array
* @return string the rendering result
*/
protected function renderAttribute($attribute, $index)
{
if (is_string($this->template)) {
return strtr($this->template, array(
'{label}' => $attribute['label'],
'{value}' => $this->formatter->format($attribute['value'], $attribute['type']),
));
} else {
return call_user_func($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 ? $this->model->toArray() : array_keys(get_object_vars($this->model));
} elseif (is_array($this->model)) {
$this->attributes = array_keys($this->model);
} else {
throw new InvalidConfigException('The "data" 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+)(\s*:\s*(\w+))?$/', $attribute, $matches)) {
throw new InvalidConfigException('The attribute must be in the format of "Name" or "Name:Type"');
}
$attribute = array(
'name' => $matches[1],
'type' => isset($matches[3]) ? $matches[3] : 'text',
);
}
if (!is_array($attribute)) {
throw new InvalidConfigException('The attribute configuration must be an array.');
}
if (!isset($attribute['type'])) {
$attribute['type'] = 'text';
}
if (isset($attribute['name'])) {
$name = $attribute['name'];
if (!isset($attribute['label'])) {
$attribute['label'] = $this->model instanceof Model ? $this->model->getAttributeLabel($name) : Inflector::camel2words($name, true);
}
if (!array_key_exists('value', $attribute)) {
$attribute['value'] = ArrayHelper::getValue($this->model, $name);
}
} elseif (!isset($attribute['label']) || !array_key_exists('value', $attribute)) {
throw new InvalidConfigException('The attribute configuration requires the "name" element to determine the value and display label.');
}
$this->attributes[$i] = $attribute;
}
}
}
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