Adding values in get_prep_value sometimes causes IntegrityError

[tirkarthi]

If strip=False then escaping introduces extra characters than the given string which might lead to integrity constraint errors while saving to database. This is caused since when we have a 100 character column and we give 80 characters of HTML with strip as False then validation passes through but the escaping adds more characters that might cause the string length to be more than 100 characters while saving to database. The safe way will be to use strip=True. I don't know how this can be handled in this layer but just wanted to give a heads up on this.

Thanks for the library.