How to display many-to-many relationships in both tables in Django admin?

Question

Django

Let's say we have a school, and one lesson can be taught by several teachers, and teachers are generalists and can lead various lessons.
models.py:

# Таблица для хранения УЧИТЕЛЕЙ
class Coach (models.Model):
    CoachHeader = models.CharField(
        max_length = 256,
        help_text = u"Имя Фамилия"
    )
    CoachPhoto =  models.ImageField(
        max_length = 255,
        upload_to = "coach_img/",
        default = "",
        null = True,
        blank = True,
        help_text = u"Путь до картинки",
    )

    def __unicode__(self):
        return u"%03d: %s" % (self.id, self.CoachHeader)

# Таблица для хранения ЗАНЯТИЙ
class Lesson (models.Model):
    LessonHeader = models.CharField(
        max_length = 256,
        help_text = u"Название занятия"
    )
    LessonAd = models.CharField(
        max_length = 1024,
        unique = False,
        null = True,
        blank = True,
        help_text = u"Анонс (краткое описание)"
    )
    Lesson2Coach = models.ManyToManyField(
        "Coach",
        null = True,
        blank = True,
        help_text = u"Учителя ведущие занятие"
    )

    def __unicode__(self):
        return u"%03d: %s" % (self.id, self.LessonHeader)

In the admin panel, you can set the link LESSON→TEACHER only when creating/editing records in the LESSON table. This is not convenient, because communication is two-way. Is there any way to tell models.py or admin.py to show the link field when working with the Coach table and the Lesson table?

Answer 1

You need to use inlines
https://docs.djangoproject.com/en/1.7/ref/contrib/...