Twig merge attributes

twig_merge_attributes

// parent_template.html.twig
{% include "AppBundle:fields:input_text.html.twig" with {
    'form_id': form_id,
    'field_name': 'Numéro',
    'required': true,
    'attr': {
        'data-minlength': '\\d{7}',
        'minlength': '7',
        'maxlength': '7',
        'data-error': 'e0.message_error'|trans()
    },
} %}

// input_text.html.twig
{{ form_widget(form_field, {
  'attr': {'class': 'form-control margin_bottom_10px'}|merge( attr|default({}) ) } )
}}