Simple check if form field has errors in Twig template

Question

In Twig template I check if a field has an error like this:

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

Is there any method like:

Answer 1

better way I found, is to use this kind of code

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

Answer 2

If you are using symfony 4, you can check errors existence with this code

{% if form_errors(registrationForm) %}
    <div class="alert alert-danger">        
        {{ form_errors(registrationForm) }}
    </div>
{% endif %}

Answer 3

This is what i use :

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

Answer 4

i have create a twig extension to handle this: my extension

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

i use it like this in twig

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