Django: m2o relation to a m2m table

Question

I have a default m2m relationship between Stage and Pipeline (without through model). I have another model (StageHistory) that needs a m2o relationship with the data saved on the table created by the m2m relationship stage-pipeline.

So what i should write on "pipeline_stage" field ?

class Stage(models.Model):
    #other fields

class Pipeline(models.Model):
    stages = models.ManyToManyField('Stage')
    #other fields


class StageHistory(models.Model):
    pipeline_stage = models.ForeignKey(HERE)

Should I create a "through" model ?

Did you really understood the problem? I want a m2o between StageHistory and the m2m created by Stage - Pipeline. I don't want a m2o between stagehistory and pipeline as you suggest! — joao, Feb 25 '13 at 15:09

score 0 · Accepted Answer · answered Feb 25 '13 at 15:18

0

You should be able to use Pipeline.stages.through to reference the through table.

If not, you could use an explicit through table and use that as the FK target.

answered Feb 25 '13 at 15:18

Daniel Roseman

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I'm going to use the explicit through table. Thanks – joao Feb 25 '13 at 19:12

Django: m2o relation to a m2m table

1 Answers1