In my form I have some checkboxes, but by default, I have :
A label is pretty trivial, so I personally preferred to render it manually.
Quick and dirty in your twig:
<label for="field">
{{ form_widget(form.field) }} Field Label
</label>
I would have liked if Symfony had a simpler solution for this but whatever.
Of course the above answers are perhaps more elegant and what not. ;)
I had the same problem, and I was unable to find a solution so I worked it out on my own. You are correct that you do need to override the {% block choice_widget %}
block. The first step is to remove the {{ form_label(child) }}
line from the {% if expanded %}
section that prints out a separate label.
{% block choice_widget %}
{% spaceless %}
{% if expanded %}
<div {{ block('widget_container_attributes') }}>
{% for child in form %}
{{ form_widget(child) }}
{# {{ form_label(child) }} <--------------------- remove this line #}
{% endfor %}
</div>
{% else %}
<select {{ block('widget_attributes') }}{% if multiple %} multiple="multiple"{% endif %}>
{% if empty_value is not none %}
<option value="">{{ empty_value|trans }}</option>
{% endif %}
{% if preferred_choices|length > 0 %}
{% set options = preferred_choices %}
{{ block('widget_choice_options') }}
{% if choices|length > 0 and separator is not none %}
<option disabled="disabled">{{ separator }}</option>
{% endif %}
{% endif %}
{% set options = choices %}
{{ block('widget_choice_options') }}
</select>
{% endif %}
{% endspaceless %}
{% endblock choice_widget %}
Now you will just need to handle printing the label in the {% block checkbox_widget %}
block.
{% block checkbox_widget %}
{% spaceless %}
<label for="{{ id }}"><input type="checkbox" {{ block('widget_attributes') }}{% if value is defined %} value="{{ value }}"{% endif %}{% if checked %} checked="checked"{% endif %} />{{ label|trans }}</label>
{% endspaceless %}
{% endblock checkbox_widget %}
You will need to do the same for {% block radio_widget %}
since it would not otherwise have a label now.
{% block radio_widget %}
{% spaceless %}
<label for="{{ id }}"><input type="radio" {{ block('widget_attributes') }}{% if value is defined %} value="{{ value }}"{% endif %}{% if checked %} checked="checked"{% endif %} />{{ label|trans }}</label>
{% endspaceless %}
{% endblock radio_widget %}
In Symfony 3+, you can simply pass the radio-inline class to your form via label_attr:
$builder->add('type', ChoiceType::class, [
'expanded' => true,
'label_attr' => ['class' => 'radio-inline']
]);
No need to create custom widgets or so...
you can guess those things by looking at the bootstrap_4_layout.html.twig offered by Symfony in your vendor directory (src/Symfony/Bridge/Twig/Resources/views/Form/bootstrap_4_layout.html.twig)
Hope this helps.