I want get form field type and set class fot field type
i try:
{# Form field row #}
{% block form_row %}
{% spaceless %}
You can get the field type by using this:
{{ form.FIELD_NAME.vars.block_prefixes.2 }}
So if you got a field called message in your form use this:
{{ form.message.vars.block_prefixes.2 }}
For nested form field types use this:
{{ form.NESTED_FORM_NAME.FIELD_NAME.vars.block_prefixes.2 }}
EDIT :
To overwrite the basic form blocks do this in your template file:
....
{% form_theme form _self %}
{% block widget_attributes %}
{% spaceless %}
id="{{ id }}" name="{{ full_name }}"{% if read_only %} readonly="readonly"{% endif %}{% if disabled %} disabled="disabled"{% endif %}{% if required %} required="required"{% endif %}{% if max_length %} maxlength="{{ max_length }}"{% endif %}{% if pattern %} pattern="{{ pattern }}"{% endif %}
{% if not attr.class is defined %}
class="{{ type|default('text') }}"
{% endif %}
{% for attrname, attrvalue in attr %}{% if attrname in ['placeholder', 'title'] %}{{ attrname }}="{{ attrvalue|trans({}, translation_domain) }}" {% elseif attrname == 'class' %}{{ attrname }}="{{ type|default('text') }} {{ attrvalue }}"{% else %}{{ attrname }}="{{ attrvalue }}" {% endif %}{% endfor %}
{% endspaceless %}
{% endblock widget_attributes %}
{% block content %}
....
{% endblock %}
OR to get beter types:
....
{% form_theme form _self %}
{% block widget_attributes %}
{% spaceless %}
id="{{ id }}" name="{{ full_name }}"{% if read_only %} readonly="readonly"{% endif %}{% if disabled %} disabled="disabled"{% endif %}{% if required %} required="required"{% endif %}{% if max_length %} maxlength="{{ max_length }}"{% endif %}{% if pattern %} pattern="{{ pattern }}"{% endif %}
{% if not attr.class is defined %}
class="{{ form.vars.block_prefixes.2 }}"
{% endif %}
{% for attrname, attrvalue in attr %}{% if attrname in ['placeholder', 'title'] %}{{ attrname }}="{{ attrvalue|trans({}, translation_domain) }}" {% elseif attrname == 'class' %}{{ attrname }}="{{ form.vars.block_prefixes.2 }} {{ attrvalue }}"{% else %}{{ attrname }}="{{ attrvalue }}" {% endif %}{% endfor %}
{% endspaceless %}
{% endblock widget_attributes %}
{% block content %}
....
{% endblock %}