Dealing with typing archaic letters to get a specific date/time pattern is just wrong. And a link to a PHP manual is not the answer... unless you're a programmer.
Some options - there should be a list of common examples on that page (e.g. how do I add am/pm) - Replace the PHP.net tutorial link with one on bdcms.org that explains it better - get away from having the user deal with PHP stuff. Provide some kind of drag and drop or GUI to help. Not sure what at the moment.
This always takes me time to figure this out.
Recent comments
Right. That's a bit more involved; I don't have time to reproduce that at the moment; perhaps someone else will. I'm sure it will be possible to port the module to Backdrop. You could put...
Entity reference default value cant be saved
This is the error message i get: Notice: Trying to access array offset on value of type null in field_default_token_field_ui_field_edit_form_validate() (line 350 of D:\...\...
Entity reference default value cant be saved
To reproduce, 1-install entityforms and create a simple form. 2-create a content type and add a field with the entity reference. 3-try to save the default value of the...
Entity reference default value cant be saved