How to display form errors in symfony?

@dedrick 

To display form errors in Symfony, you can use several methods:

1. Display errors in the template: You can display form errors directly in your Twig template by using the form_errors() function. For example:

1
2
3
4
5
6
7

{% if form_errors(form) %}
    <ul>
        {% for error in form_errors(form) %}
            <li>{{ error.message }}</li>
        {% endfor %}
    </ul>
{% endif %}

1. Use the form_errors() function in individual form fields: You can also display errors for individual form fields by using the form_errors() function on that specific field. For example:

1
2
3

{{ form_label(form.username) }}
{{ form_widget(form.username) }}
{{ form_errors(form.username) }}

1. Display errors in a flash message: You can display form errors in a flash message by adding the errors to the "error" flash bag in your controller. For example:

1
2
3
4
5

if ($form->isSubmitted() && !$form->isValid()) {
    foreach ($form->getErrors(true) as $error) {
        $this->addFlash('error', $error->getMessage());
    }
}

Then, in your Twig template, you can display the flash message like this:

1
2
3

{% for flash_message in app.session.flashbag.get('error') %}
    <div class="alert alert-danger">{{ flash_message }}</div>
{% endfor %}

These are some of the common methods used to display form errors in Symfony. Choose the one that best fits your requirements and coding structure.