use dict in  * LISTE_CHOIX.*

On Tue, Nov 13, 2018 at 6:14 PM 'Christian' via Django users <
[email protected]> wrote:

> 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.
>
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