This is a question in the django ManyToMany field.

Hi, everyone. Django relational model question.

class Actress(models, model):
    Actress = models.CharField(max_length=30)


class Movielist(models.Model):
    title = models.CharField(max_length=30)
    cast = models.CharField(max_length=300)

Among the two models above, we want to make the action field and the cast field many-to-many.

However, the data of the cast field is stored in one column. (ex: Won Bin, Lee Na-young, Cho Jin-woong)

In this case, is it possible to map the data of the cast field in one column and the Actress field to many to many?

I wonder what to do if possible.

django python

2022-09-22 20:34

1 Answers

Take a look at the documentation on Many-to-many relationship.

Configure the model like this.

from django.db import models

class Movie(models.Model):
    title = models.CharField(max_length=30)

class Actress(models.Model):
    title = models.CharField(max_length=100)
    movies = models.ManyToManyField(Movie)

You can save the relationship as below.

>>> m1 = Publication (title='National Team 2')
>>> m1.save()
>>> m2 = Publication (title = 'cold')
>>> m2.save()
>>> m3 = Publication (title = 'Late Night FM')
>>> m3.save()
>>> a1 = Article (title = 'Suae')
>>> a1.save()
>>> a1.movies.add(m1)
>>> a1.movies.add(m2)
>>> a1.movies.add(m3)

a1.movies.all() allows you to bring all of the actor's movies.

m1.actress_set.all() will allow you to import all the actors in that movie.

2022-09-22 20:34

If you have any answers or tips

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