You need to check out codex page regarding roles and caps to see the list of default capabilites that exist, you can always create your own custom capabilites
As far as I know, you can not (easily) set up a custom capability for a certain post/page ID. What is described in the Codex, are the so-called meta capabilities (a set of predefined capabilities with additional arguments/information). A (not-that-easy) way is to write your own my_add_cap, my_current_user_can, my_has_cap etc. functions. Regarding your follow-up question… … Read more
You haven’t missed any capabilities. User should be able to insert images into the editor with these capabilities. The only problem I can think of is that, you are trying to modify the capabilities of a role which won’t work. See this section If you are defining a custom role, and adding capabilities to the … Read more
The check will be called too early if you just write it in your plugin file like this: if ( current_user_can( ‘add_movies’ ) ) { add_action( ‘admin_bar_menu’, ‘wpse17689_admin_bar_menu’ ); } function wpse17689_admin_bar_menu( &$wp_admin_bar ) { $wp_admin_bar->add_menu( /* … */ ); } Because it will execute when your plugins is loaded, which is very early in … Read more
first about the add_role you only need to run this once, so after you paste it in your functions.php and saved you can remove it and save again and the role will be there always. then about the author_can function, i really never use it so i can tell whats wrong but you can use … Read more
Untested, but should be easily extendable(or something you can take ideas from). function roles_have_cap( $roles = false, $cap ) { global $wp_roles; if( !isset( $wp_roles ) || !isset( $cap ) ) return false; if( !$roles ) $roles = array_keys( $wp_roles->roles ); if( !is_array( $roles ) ) $roles = array( $roles ); $hascap = array(); foreach( … Read more
In your case best solution is create your own custm role and assign them only the capabilities you users need. Regarding wordpress, for what I can understand from your question the only cabability you should give them is read. In this way they will see only the profile. Problems start with the plugin, you don’t … Read more
With you current_user_can call everything is just fine. The problem lies elsewhere… If you’ll take a look at Roles and Capabilities, you’ll see that there is no capability like edit_post. So your code is working correctly – admin can’t edit_post, because there is no such capability (unless it’s a custom capability registered by your code … Read more
Try the Members Plugin. This will allow you to create a new roles (which you can then assign to the groups) with their own cap or mixture thereof.
The edit_others_posts capability should allow users to set the author of a post. At first glance you might reply that you don’t want your authors to be able to edit one another’s posts. The difference in ability is very subtle though: writing a post and then assigning it to another user isn’t much different from … Read more