Django ManytoMany Field

Sample model
class Chapter(models.Model):
    name = models.CharField(max_length=100)
    tags = models.ManyToManyField(Tag, blank=True, null=True)


Create Relationship - One by One
    new_chapter = Chapter.objects.create(name=chapter_name)
    new_tag = Tag.objects.create(name=tag_name)
    new_chapter.tags.add(new_tag)


Create Relationship - Multiple
    new_section = Section.objects.create(name=section_name, chapter=parent_chapter)
    new_section.tags = list(parent_chapter.tags)


Iterate ManyToMany relationship
    for tag in parent_chapter.tags.all():
        new_section.tags.add(tag)