Hello,
I have a Person model with a ManyToManyField with itself through a Relation
model to declare relations like Paul is Julie's uncle :
class Relations(models.Model):
id_person= models.ForeignKey('Person',
related_name='relation_id_person')
id_relation = models.ForeignKey('Person',
related_name='relation_id_relation')
relation_type =
models.ForeignKey('RelationType') #
lists of relation types, as uncle, niece, father, son ...
day_starts_relation = models.CharField(max_length=50L, blank=True)
month_starts_relation = models.CharField(max_length=50L, blank=True)
year_starts_relation = models.CharField(max_length=50L, blank=True)
day_ends_relation = models.CharField(max_length=50L, blank=True)
month_ends_relation = models.CharField(max_length=50L, blank=True)
year_ends_relation = models.CharField(max_length=50L, blank=True)
notes = models.TextField(blank=True)
def __unicode__(self):
return u"{0} {1}".format(self.id_person,self.id_relation)
class Person(models.Model):
name = models.CharField(max_length=255L)
relations = models.ManyToManyField("self", through='Relations',
related_name='person.relations', symmetrical = False)
I used the Django admin to create and display the Person model, however,
the "relations" field is not displayed on the "other side" of the relation.
i.e. if I create a person named "Paul" uncle of "Julie", the fact that Paul
is Julie's uncle won't be displayed on Julie's form.
I suppose I have two solutions :
1. To add the possibility to create the relation that Julie is Paul's niece
on Julie's form, but this relation should share the dates
(day_starts_relation, month_starts_relation ...) with the relation "Paul
uncle of Julie"
2. To display as read only on Julie's form the relation "Paul uncle of
Julie"
But how could I modify Django's normal behavior to enable those solutions ?
What is the best solution in your point of view ?
Thanks,
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