CODEWITHSUNDEEP
djangorecursionmodelsrelationship
Traian
Traian

Reputation: 3003

Django model recursive relationship

  1. Why would I create a recursive relationship? 
    2.     aField = models.ForeignKey('self')
  2. Is this the same with the above? 
        class aClass(models.Model):  
        aField = models.ForeignKey('aClass')

Upvotes: 2

Views: 5087

Answers (1)

sergzach
sergzach

Reputation: 6764

  1. You may need to create a recursive relationship when you would like to have parent and child nodes with identical model structure. For example if you have comments with text, data and user_id:

    class Comment( models.Model ):
    text = models.TextField()
    create_date_time = models.DateTimeField()
    parent_comment = models.ForeignKey( 'self' )

  2. I think yes (you can try to test it) but it's not a good form. If you change a class name then you must change the string value in brackets. If you use 'self' you haven't this headache.

Upvotes: 7

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