Description of the need This is a long standing confusion. In Drupal there are multiple issues for this:
- https://www.drupal.org/project/drupal/issues/502430
- https://www.drupal.org/project/drupal/issues/848470
- https://www.drupal.org/project/drupal/issues/2862291
The first issue describes it well:
It is somewhat disconcerting to users who have the 'administer book outlines' permission to see the 'outline' tab and 'outline' fieldset on every single node type, regardless of whether that node type has been configured to be allowed in books. I can see a use-case where that might be a desired feature, but i think its probably relatively rare.
Note, that book module seems to be the oddball here. If you disable menus for a content type not even user 1 has ability to add them to a menu from within the content type.
Proposed solution
Create an additional checkbox in the content/book/settings
form that when checked allows book outlines for any content type, not just the designated book-types. By default this is checked, so that any current sites that might rely on "seeing outline information on all content types regardless of config settings" won't be broken by this after upgrading.
Recent comments
The Mail System and MimeMail modules are now installed. I'll let you know if they solve the problem. Edit: Using Mail System with MimeMail I was able to send plain text emails. There is...
HTML Email treated as plain text
If you haven't already I recommend installing Mail System and MimeMail. The latter will help format emails as HTML and first helps with configuring which module will handle the formatting...
HTML Email treated as plain text
The horrors of cut/paste! Brilliant, thanks.
SQLSTATE[22007]: Invalid datetime format: 1366 Incorrect string value: