Allow user to set input class attributes

When a user sets a form input attribute class, we shouldn't force-add the form-control class.
symfony · gnat42 · May 3, 2017 · May 3, 2017 · 7d54de9df345c0f40647cadb231e3cfe1a1c4b71
commit 7d54de9df345c0f40647cadb231e3cfe1a1c4b71
diff --git a/src/Symfony/Bridge/Twig/Resources/views/Form/bootstrap_3_layout.html.twig b/src/Symfony/Bridge/Twig/Resources/views/Form/bootstrap_3_layout.html.twig
@@ -4,7 +4,7 @@

 {% block form_widget_simple -%}
    {% if type is not defined or type not in ['file', 'hidden'] %}
-        {%- set attr = attr|merge({class: (attr.class|default('') ~ ' form-control')|trim}) -%}
+        {%- set attr = attr|merge({class: (attr.class|default('form-control'))|trim}) -%}
    {% endif %}
    {{- parent() -}}
 {%- endblock form_widget_simple %}