symfony2表单复选框分组（扩展和多选）

问题描述：

in my form type i have this :

    $builder
        ->add('options', 'choice', [
            'choices'  => $choices,
            'multiple' => true,
            'expanded' => true,
            'label'    => false
        ])
    ;

choices is an array :

$choices = [
     'val1' => 'val1',
     'val2' => 'val2',
     'val3' => 'val3'
];

Great ! now i want to categorized my choices with an array like this:

$choices = [
     'label1' => [
        'val1' => 'val1',
        'val2' => 'val2',
     ],
     'label2' => [
        'val3' => 'val3',
        'val4' => 'val4',
     ],
     'label3' => [
        'val5' => 'val5',
        'val6' => 'val6',
     ],
];

So i want result like below

enter image description here

what is the best way to achieve this?

在我的表单类型中我有： p>

  $ builder  
  - ＆gt; add（'options'，'choice'，[
'choices'=＆gt; $ choices，
'multiple'=＆gt; true，
'expanded'=＆gt; true，
'  label'=＆gt; false 
]）
; 
  code>  pre> 
 
 选项是一个数组： p> 
 
 
  $  choices = [
'val1'=＆gt;  'val1'，
'val2'=＆gt;  'val2'，
'val3'=＆gt;  'val3'
]; 
  code>  pre> 
 
 太棒了！ 现在我想用这样的数组对我的选择进行分类： p> 
 
 
  $ choices = [
'label1'=＆gt;  [
'val1'=＆gt;  'val1'，
'val2'=＆gt;  'val2'，
]，
'label2'=＆gt;  [
'val3'=＆gt;  'val3'，
'val4'=＆gt;  'val4'，
]，
'label3'=＆gt;  [
'val5'=＆gt;  'val5'，
'val6'=＆gt;  'val6'，
]，
]; 
  code>  pre> 
 
 所以我想要下面的结果 p> 
 
 
  p> 
 
 
达到此目的的最佳方法是什么？ p>  
  div>

答

You can override a widget for this choice field and manually render labels

Like this (in your form tamplate):

{% form_theme putYourFormNameHere _self %}

{% block _putYourFormNameHere_options_widget %}
    <div {{ block('widget_container_attributes') }}>
    {% for group_label, group in choices %}
        {%- if group is iterable -%}
        <div>
            <label><b>{{ group_label|trans({}, translation_domain) }}</b></label>
            {% for key, choice in group %}
                <div>
                    {{- form_widget(form[key]) -}}
                    {{- form_label(form[key]) -}}
                <div>
            {% endfor %}
        </div>
        {%- endif -%}
    {% endfor %}
{% endblock %}

symfony2表单复选框分组（扩展和多选）

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