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:

[image: Screenshot from 2020-01-28 15-05-09.png]


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

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