using a foreign key with multiple choices
Christian
Hello
I need to use a model form to create a new instance of Recette,
using multiple choices list instead of the foreign_key
class Recette(models.Model):
......
categoriederecette = models.ForeignKey(Categorie,
on_delete=models.CASCADE)
class Categorie(models.Model):
SOUPE = 'SP'
DESSERTS ='DS'
PLATUNIQUE ='PU'
LISTE_CHOIX = ((SOUPE,'Soupe'), (DESSERTS,'Desserts'),
(PLATUNIQUE,'Plat unique'),)
.....
categorierecette =
models.CharField(db_column='Categorierecette', max_length=15,
choices=LISTE_CHOIX, blank=True, null=True) # Field name made
lowercase....
I use a Modelform :
class RecettesForm(forms.ModelForm):
categoriederecette = forms.ChoiceField(choices =
Categorie.LISTE_CHOIX)
class Meta:
model = Recette
fields = (...... ,'categoriederecette')
The form is displayed correctly, but cannot be saved. In the test if form.is_valid(): I get a value error -
ValueError: Cannot assign "'SP'": "Recette.categoriederecette" must be a "Categorie" instance.
Any help would be greatly appreciated.
amit pant
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Jani Tiainen
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