Allowing groups to only edit relationship fields in a model
1) I have a model A which I want to allow user group G to read, write, and create.
2) Also I have a model B which I only want to allow user group G to read.
3) There is a many2many relationship between A and B.
I want group G to be able to edit add/remove relationships between A and B. So I need the relationship field to be writable. 1) means that this won't work. What can I do?