Simple check if form field has errors in Twig template
SymfonyTwigSymfony FormsSymfony Problem Overview
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:
{% if form.points.hasErrors() %}
to do it simpler? It's not a big difference, but if I can't do it easier why not.
Symfony Solutions
Solution 1 - Symfony
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 %}
Solution 2 - Symfony
That method does not exist. I typically do {% if form.points.vars.errors|length %}
.
Solution 3 - Symfony
You can also check for errors when overriding field rendering:
{% 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 %}
Solution 4 - Symfony
For deeper form customization 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
Solution 5 - Symfony
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 %}
Solution 6 - Symfony
The simplest way of checking whether the form has an error:
{% if not form.vars.errors|length %}
{% endif %}
Symfony version >= 4
Solution 7 - Symfony
Since an empty array resolves to false, you can shorten your existing check to
{% if form.WIDGET_NAME.get('errors') %}
Solution 8 - Symfony
This is what i use :
<div class="form-group {{ form.brand.vars.errors|length > '' ? 'has-error' }}">
Solution 9 - Symfony
I had a similar problem, but form.points
doesn't exist in my twig templates.
I had to get the number of errors in the controller, then pass it into my templates as a variable. $form->getErrors()
does not behave as you might expect in your controller though. See this SO question for a function that will get the form errors correctly.
Solution 10 - Symfony
i have create a twig extension to handle this: my extension
public function hasError($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) : '' }}