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So I want to create a separate user login page for my website.

I create a twig file called page--user--login.html.twig which is great for the outer container. I still want to edit the form divand or the block div. But with debugger on It doesn't give me suggestions for creating a custom form or block twig file just for just the login form.

I can create individual form elements for the login but I want to edit the form div or block div itself without affecting anything else.

Any suggestions?

  • The level of detail you are talking about involves things like hook_form_alter, and individual hook_theme_suggestions_alter per form element. You should not be writing raw HTML forms in twig templates. – Kevin Feb 8 '17 at 17:42
  • if you open up form.html.twig you get a simple form html tag, that's all I want but it needs to be separate from any other generic forms on the website. I'm not interested in writing a raw HTML form. I just want a separate twig file only for the login form. – Tyler Feb 8 '17 at 18:15
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You can add a theme name suggestion in a hook_theme_suggestions_HOOK_alter:

function mytheme_theme_suggestions_form_alter(&$suggestions, $variables) {
  if ($variables['element']['#form_id'] == 'user_login_form') {
    $suggestions[] = 'form__user_login_form';
  }
}

If you want to add suggestions for form elements you need some more code. See the file themable_forms.module from the module Themable forms. This is the only code file in this module and it is a good example how you can approach this in form alter, preprocess form element and theme suggestions hooks.

  • This didn't work for me. I try changing user_login_form to user-login-form and I was to have user-login-forms for the inputs but not a suggestion for the <form> itself. I'll play around with this some more but I think I'll just end up using an if statement on form.html.twig and load the added attributes I want to <form> tag among other things. – Tyler Feb 9 '17 at 3:39
  • OK, this was only the start. See the edited answer where you can go from there. – 4k4 Feb 9 '17 at 7:29

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