yiins/src/components/Select2.php

<?php
/**
 * Created by PhpStorm.
 * User: AlexLcDee
 * Date: 27.01.2017
 * Time: 18:37
 */

namespace yiins\components;

use Yii;
use yiins\assets\Select2Asset;

class Select2
{
    protected $options = [];

    protected $defaultOptions = [];

    protected $data = [];

    protected $htmlOptions = [
        'class' => 'form-control',
    ];

    protected $containerOptions = [
        'class' => 'form-group',
    ];
    protected $labelOptions = [
        'class' => 'control-label',
    ];

    protected $errorOptions = [
        'class' => 'help-block error',
    ];

    protected $attribute;

    protected $model;

    public static function renderActiveSingle(ActiveRecord $model, $attribute, $params = [])
    {
        $instance = static::instantiate($model, $attribute, $params);
        return $instance->renderSingle();
    }

    protected static function instantiate(ActiveRecord $model, $attribute, $params = [])
    {
        $instance = new static;
        $instance->setModel($model);
        $instance->setAttribute($attribute);
        foreach ($params as $param => $value) {
            $instance->set($param, $value);
        }
        $instance->init();
        return $instance;
    }

    protected function setModel(ActiveRecord $model)
    {
        $this->model = $model;
    }

    protected function setAttribute($attribute)
    {
        $this->attribute = $attribute;
    }

    protected function set($key, $value)
    {
        if (is_array($this->$key) && is_array($value)) {
            $this->$key = \CMap::mergeArray($this->$key, $value);
        }
    }

    public function init()
    {
        Select2Asset::register();
        $this->defaultOptions = \CMap::mergeArray($this->defaultOptions, [
            'language' => Yii::app()->language,
        ]);

        $this->options = \CMap::mergeArray($this->defaultOptions, $this->options);
    }

    protected function renderSingle()
    {
        \CHtml::resolveNameID($this->model, $this->attribute, $this->htmlOptions);
        $group = \CHtml::activeDropDownList($this->model, $this->attribute, $this->data, $this->htmlOptions);
        $id = $this->htmlOptions['id'];
        $options = \CJavaScript::encode($this->options);
        $script = <<<JS
$("#$id").select2($options);
JS;
        Yii::web()->clientScript->registerScript('select2-' . (\CHtml::$count++), $script);
        return $group;
    }

    public static function renderActive(ActiveRecord $model, $attribute, $params = [])
    {
        $instance = static::instantiate($model, $attribute, $params);
        return $instance->renderActiveField();
    }

    protected function renderActiveField()
    {
        \CHtml::resolveNameID($this->model, $this->attribute, $this->htmlOptions);

        $group = \CHtml::openTag('div', $this->containerOptions);
        $group .= \CHtml::activeLabelEx($this->model, $this->attribute, $this->labelOptions);
        $group .= \CHtml::activeDropDownList($this->model, $this->attribute, $this->data, $this->htmlOptions);
        $group .= \CHtml::error($this->model, $this->attribute);
        $group .= \CHtml::closeTag('div');

        $id = $this->htmlOptions['id'];
        $options = \CJavaScript::encode($this->options);
        $script = <<<JS
$("#$id").select2($options);
JS;

        Yii::web()->clientScript->registerScript('select2-' . (\CHtml::$count++), $script);
        return $group;
    }
}