What is the proper way to add a required field to a post type?
39850
How to make a meta box field a requirement
8876
How do I programmatically create a new content type?
76353
How to auto send email when publishing a custom post type?
27327
Force category choice before creating new post?
71863
Standard Name field required from standard page layout but not from Apex code
110552
Address field: Set Address via Apex
131170
How to specify which form mode to use for a content type
139075
Is there a way to perform validation for apex:inputField?
109422
Adding a Taxonomy Filter to Admin List for a Custom Post Type?
153237
Change post permalink to external URL from custom field
107530
How to tell whether a field is required or not in Apex by describe fields
67404
How to add upload field in a custom taxonomy?
42382
Using the HTML5 "required" attribute for a group of checkboxes?
137259
Require reason for post deletion and un-deletion?
150644
Does Stack Exchange insist on a special language for posts? Please describe
130119
Add field in hook_node_info();
79473
Add content type field programmatically