Email body policy form should show available token browser and TWIG variables

A token browser would be really helpful.

I'm so confused with policy.

<p class="contact-email-intro"><a href="{{ sender_url }}">{{ sender_name }}</a> sent a message using the contact form <a href="{{ form_url }}">{{ form }}</a>.</p>
<span>Name:-</span><span>{{ field_name }}</span>
<span>Name:-</span><span>{{ field_name_value }}</span>
<span>Email:-</span><span>{{ contact_message_field_email }}</span>
<span>Phone:-</span><span>{{ contact_message_field_sender_phone }}</span>
<span>Message:-</span><span>{{ contact_message_message }}</span>
<span>Message:-</span><span>{{ contact_message_message_value }}</span>

NOTE: In my gmail - I can see only the paragraph tags content rendered correctly. All the other things in spam twig content are empty.

My token for email field is: [contact_message:field_email]

Nothing works for me. help needed. Because there is no such thing in google search, I can't find any helpful links.

+1 for this feature ...

+1 for this feature

@featuriz did you manage to solve the problem?

+1 for this feature

I will try to add the described functionality

while we are waiting for volunteers, can at least someone explain where to get tokens or twig variables for email body in policy?

@AdamPS Thanks! Do I understand correctly that before you get the necessary twig variables for your form, you need to programmatically set them? That is, if you are not good enough in programming, symfony mailer will not help you in any way to send emails in html format?

AdamPS so how to add tokens to email body ? I am confused.

Here is a cheap way to add token browser on mailer policy edit form:

/**
 * Implements hook_form_FORM_ID_alter().
 */
function symfony_mailer_form_mailer_policy_edit_form_alter(array &$form, \Drupal\Core\Form\FormStateInterface $form_state, $form_id): void {
  if (\Drupal::moduleHandler()->moduleExists('token')) {
    $form['config']['token_browser'] = [
      '#theme' => 'token_tree_link',
      '#token_types' => 'all',
      '#global_types' => FALSE,
      '#dialog' => TRUE,
    ];
  }
}

I'm not a fan of Token UI but at least then we will have tokens list at the hand.

Thanks @vlad.dancer, this is simple and does the job for me!

@AdamPS, I added the token list display in the BodyEmailAdjuster.
About adding an annotation, it seems impossible at the moment, because Adjusters don't know anything about the place where they are called, namely EmailBuilder. So, we had to abandon this idea.
If you have any other suggestions, I will be happy to add them.

However, in this case, this data will be available only at the stages of building an email, which will no longer be valuable to us.
The data about the current EmailBuilder is not contained in the settingsForm stage, and if I understood the existing code correctly, it cannot be contained there.
If I've misunderstood something, please correct me.

Alternatively, we can store these values in the form_state in the PolicyEditForm and retrieve them from the form_state in the BodyEmailAdjuster.
In this case, to display the available tokens by type, we can indeed describe token_types, but I don't see how we can use variables in this context.

If I understood correctly, it doesn't seem logical to do this in BodyBuilder.
In this case, the user will still have to write a handler for their own twig tokens, which is similar to creating their own token.
So do you mind if we add only token_types?

I'm afraid I misunderstood you a bit.
In this context, it makes sense to add it.
Then do we need to add something else in this task?

If so, let's split it into two tasks and I'll add this functionality tomorrow.

@AdamPS, could you separate these tasks then?

Updated the title and description as it was misplaced with #3404625: Email body policy form should show available TWIG variables.

I did the propsed patch but after applying this patch i got the follow error :

Call to undefined method Drupal\symfony_mailer\Entity\MailerPolicy::getVariables()
line 30 --> www/modules/contrib/symfony_mailer/src/Form/PolicyEditForm.php.

When set line 30 in comment $form_state->setValue('variables', $this->entity->getVariables());
The error disappears, but when you click on available tokens the popup windows appears but it's empty .

Maybe I forgot something, can anyone help me to solve my problem ?