title: Display a findAll() result in a form
body: <p>I'm making an app that handles tags (3 fields : name, description, and color) and I would like to create a single template with a form to add/edit/delete these.</p>
  
  <p>I found multiple answers on internet about many-to-one embedded forms but here, I have no foreign keys, my entity is isolated. I was thinking about making a loop to create my <code>n</code> forms in my controller but this sounds ugly and unoptimized.</p>
  
  <p>I currently have a single form like that :</p>
  
  <pre><code>public function buildForm(FormBuilderInterface $builder, array $options)
  {
      $builder
          -&gt;add('name',               'text')
          -&gt;add('description',        'textarea')
          -&gt;add('color',              'text')
          -&gt;add('save',               'submit');
  }
  </code></pre>
  
  <p>Now the twig :</p>
  
  <pre><code>{% for thirdPartyTypeForm in thirdPartyTypeForms %}
  &lt;div class="col-sm-12"&gt;
      {{ form_start(thirdPartyTypeForm, {'attr': {'class': 'form-horizontal realForm'}}) }}
      {{ form_errors(thirdPartyTypeForm) }}
  
      &lt;div class="row"&gt;
          &lt;div class="form-group"&gt;
              {{ form_label(thirdPartyTypeForm.name, "Type :", {'label_attr': {'class': 'col-sm-3 control-label'}}) }}
              {{ form_widget(thirdPartyTypeForm.name, {'attr': {'class': 'form-control'}}) }}
          &lt;/div&gt;
  
          &lt;div class="form-group"&gt;
              {{ form_label(thirdPartyTypeForm.description, "Description :", {'label_attr': {'class': 'col-sm-3 control-label'}}) }}
              {{ form_widget(thirdPartyTypeForm.description, {'attr': {'class': 'form-control'}}) }}
          &lt;/div&gt;
  
          &lt;div class="form-group"&gt;
              {{ form_label(thirdPartyTypeForm.color, "Couleur :", {'label_attr': {'class': 'col-sm-3 control-label'}}) }}
              {{ form_widget(thirdPartyTypeForm.color, {'attr': {'class': 'form-control'}}) }}
          &lt;/div&gt;
  
          {{ form_widget(thirdPartyTypeForm.save, {'attr': {'class': 'btn btn-primary'}, 'label': 'Modifier'}) }}
  
          {{ form_rest(thirdPartyTypeForm) }}
          {{ form_end(thirdPartyTypeForm) }}
      &lt;/div&gt;
  &lt;/div&gt;
  {% endfor %}  
  </code></pre>
  
  <p>What should I do ?</p>