A simple check to see if the form field has errors in the Twig template

Question

In the Twig template, I check if the field has an error, for example:

{% if form.points.get('errors') is not empty %} 

Is there any method like:

 {% if form.points.hasErrors() %} 

make it easier? This is not a big difference, but if I cannot make it easier, why not.

Answer 1

This method does not exist. I usually do {% if form.points.vars.errors|length %} .

Answer 2

The best way I've found is to use this kind of code

 {% if not form.vars.valid %} <div class="alert alert-error"> {{ form_errors(form) }} </div> {% endif %} 

Answer 3

You can also check for errors when redefining fields:

 {% block field_row %} {% spaceless %} <div class="control-group {% if errors %}error{% endif %}"> {{ form_label(form) }} <div class="controls"> {{ form_widget(form) }} {{ form_errors(form) }} </div> </div> {% endspaceless %} {% endblock field_row %} 

Answer 4

To further customize the form, I do:

 <div class="form-group {% if form.MYFORMINPUT.vars.valid==false %}has-error{% endif %}"> //some twisted divs {{form_label(form.MYFORMINPUT)}} {{form_widget(form.MYFORMINPUT)}} </div> 

Sf2.5

Answer 5

Since an empty array resolves to false, you can reduce the existing validation to

 {% if form.WIDGET_NAME.get('errors') %} 

Answer 6

This is what I use:

  <div class="form-group {{ form.brand.vars.errors|length > '' ? 'has-error' }}"> 

Answer 7

The correct code (for Symfony 3.4):

 {% if form.vars.errors|length %} 

Answer 8

I had a similar problem, but form.points does not exist in my branch templates.

I had to get the number of errors in the controller, and then pass it to my templates as a variable. $form->getErrors() does not behave as you would expect in your controller. See this SO question for a function that will correctly accept form errors.

Answer 9

I am creating a branch extension to handle this: my extension

 public function hasError($string) { if(strlen($string) > 4) return true; return false; } 

I use it like in twig

 {{ has_error(form_errors(form.username)) ? form_errors(form.username) : '' }}