improvement to the doc of ModelAdmin.view_on_site

[redstoneleo]

Whether get_absolute_url() is defined determines the visible state of the “View on site” button, I suggest to change ​the doc to the following to emphasize this(Note I have read the official doc on contributing to the doc, but it is hard for me to do that, so I posted my suggestion here ).

If the object’s ​"django.db.models.Model.get_absolute_url" get_absolute_url() method is defined, then set view_on_site to control whether or not to display the “View on site” link. This link should bring you to a URL where you can display the saved object. Otherwise, no effect.

This value can be either a boolean flag or a callable. If True (the default), the object’s ​get_absolute_url()("django.db.models.Model.get_absolute_url") method will be used to generate the url.

[Mariusz Felisiak]

Thanks for the ticket, however, the current wording is clear enough (IMO).

If True (the default), the object’s get_absolute_url() method will be used to generate the url.

It clearly indicates that it won't do anything if you model doesn't have a get_absolute_url(). It's also followed by a sentence when it's explicitly stated:

If your model has a get_absolute_url() method but you don’t want the “View on site” button to appear, you only need to set view_on_site to False: