m2m field widget to add or update data as inline formset

[Suraj]

Hello everyone,

This may be quite simple, but I am unable to find a widget which will function same as m2m widget of django, but will also create new model instance if it doesn't exists.

E.g.

If I had models as:

class Outcome(models.Model):
    outcome = models.CharField(max_length=255)
    outcome_short_name = models.CharField(max_length=10, blank=True, null=True)


class Course(models.Model):
    course_title = models.CharField(
        verbose_name=COURSE_SINGULAR + " title", max_length=200, unique=True
    )

    course_outcome = models.ManyToManyField(
        Outcome, verbose_name=COURSE_SINGULAR + " outcome", blank=True
    )

Then I want "Outcomes" shown as below while creating course:

Now, If the outcomes data added by user already exists, then it should only map them to course. Otherwise it should first store outcomes into database and then map them to course.

Any guidance in right direction will be highly appreciated.

Thanks,

-- 

Suraj

https://hacksj4u.wordpress.com
https://github.com/SurajDadral