Error editing object in admin when it is the foreign key of another model twice, one of which is edited inline

[medhat]

I will describe it by way of an example:

start with the following models:

class model_a(models.Model):
    title = models.CharField(maxlength=100)
    
    class Admin:
        pass
        
class model_b(models.Model):
    title = models.CharField(maxlength=100,core=True)
    fk1 = models.ForeignKey(model_a,edit_inline=models.TABULAR)
    fk2 = models.ForeignKey(model_a,related_name='other')
    
    class Admin:
        pass                

Notice that model_b has two fields that are foreign keys to the same model. Also, one of these foreign keys is edited inline. If you try to edit or add a model_a object in the admin side you will get a KeyError exception.

[medhat]

duplicate of #2522

[Remco Wendt]

which in turn is a duplicate of #1939