bug title, bug summary fields can be made empty via the API

[Celso Providelo]

General required text fields can be set as empty string via the webservice API, however the same thing can't be done via the usual web UI forms.

This is a consistency problem and sometimes can also cause UI problem (lack of page title or main header).

We have overly weak validators on the involved model objects (and this is perhaps systemic - one way to fix would be to change the defaults for 'String(null=False)' to actually mean 'String(null=False, validator=lambda x:len(x) > 0)'

[Robert Collins (lifeless)]

This suggests broken model validators.

[Robert Collins (lifeless)]

So, definitely broken model validators. Lazr.restful cannot assume that all fields that require a value will reject ''. So This isn't a lazr.restful bug. It may be a bug that the default doesn't match what we use most often in LP however; a missing default is not IMNSHO high.

[Robert Collins (lifeless)]

For the LP side, we need to make this into separate bugs for the fields that are bogus. In fact, I'm going to narrow this bug down to just the known fields, and remove the restful task entirely.

[Curtis Hovey (sinzui)]

Some aspects of this bug overlaps with bug 400477 where the fields are correct by lazr by-passes the normalisation/validation rules.