Customize CSS in collection type symfony

Question

I'm using a collectionType that render a multiple select inputs, I want to add the select2 css class to my form but it just doesn't works.

This is the Form that has the collection.

 ->add('arrayDiagnosticos', 'collection', [
                'type' => 'entity',
                'label' => 'Diagnósticos dinámicos',
                'allow_add' => true,
                'allow_delete' => true,

                'attr' => [
                        'class' => 'select2',
                    ],
                'options' => [
                   'empty_value' => 'Seleccionar Diagnóstico',
                    'class' => 'AppBundle:Diagnostico',
                    'required' => true,
                    'label' => 'Buscador de Diagnósticos',
                    'attr' => [
                        'class' => 'select2',
                    ],
                ],
            ])

The twig is

<ul class="tags" data-prototype="{{  form_widget(form.arrayDiagnosticos.vars.prototype)|e }}">
{# iterate over each existing tag and render its only field: name #}

    {% for diagnostico in form.arrayDiagnosticos %}
    <li>
      {{ form_row(diagnostico.nombreDiagnostico) }}
    </li>
   {% endfor %}

</ul>

It should render a select input like this: With select2 class 1

But it renders like a regular select input without the select2 class 2

This is the output html

<div class="form-group"><label class="control-label required">Diagnósticos dinámicos</label>    
<div id="paciente_form_arrayDiagnosticos" class="select2" data-prototype="&lt;div class=&quot;row&quot;&gt;&lt;div class=&quot;col-xs-9&quot;&gt;&lt;select id=&quot;paciente_form_arrayDiagnosticos___name__&quot; name=&quot;paciente_form[arrayDiagnosticos][__name__]&quot; required=&quot;required&quot; class=&quot;select2 form-control&quot;&gt;&lt;option value=&quot;&quot; selected=&quot;selected&quot;&gt;Seleccionar Diagnóstico&lt;/option&gt;            &lt;option value=&quot;1&quot; &gt;se siente mal&lt;/option&gt;            &lt;option value=&quot;2&quot; &gt;asfd&lt;/option&gt;            &lt;option value=&quot;3&quot; &gt;YOLO&lt;/option&gt;&lt;/select&gt;&lt;/div&gt;&lt;div class=&quot;col-xs-3&quot;&gt;&lt;a href=&quot;#&quot; class=&quot;btn btn-danger btn-sm&quot; data-removefield=&quot;collection&quot; data-field=&quot;__id__&quot;&gt;Eliminar Diagnóstico&lt;/a&gt;&lt;/div&gt;&lt;/div&gt;" data-prototype-name="__name__"><ul class="bc-collection list-unstyled"></ul><a href="#" class="btn btn-primary btn-sm" data-addfield="collection" data-collection="paciente_form_arrayDiagnosticos" data-prototype-name="__name__">Agregar Diagnóstico</a></div></div>

I also tried to do it via jQuery and no luck

<script>
$(function(){
    $('#paciente_form_arrayDiagnosticos').addClass('select2')});
</script>

How do I properly attach the select2 css class?

are you sure that you are the plugins select2.js loaded with your page ? — darkomen
Yes, the attached images both are on the same form but the collection type field doesn't render it and the entity field type does render the class. — fcpauldiaz
What does console say for jQuery solution, maybe it didn't render. — Zlatko Vujicic

Besbes Riadh Besbes Riadh · Accepted Answer · 2015-12-31T13:46:38

Try this:

->add('arrayDiagnosticos', 'collection', [
                'type' => new PreDiagnosticoType(),
                'label' => ' ',
                'allow_add' => true,
                'allow_delete' => true,
                'prototype' => true,
                'by_reference' => false,
                'attr' => array(
                        'class' => 'select2',
                ),
            ])

Customize CSS in collection type symfony

2 Answers