Django 1.2.1 Inline Admin for Many To Many Fields

Question

I recently upgraded to Django 1.2.1 because I was specifically interested in the ability to have basic many-to-many inline fields. When using the admin like so:

Initial

Answer 1

Do one of these examples accomplish what you are trying to do?

a:

# Models:

class Ingredient(models.Model):
    name = models.CharField(max_length=128)

class Recipe(models.Model):
    name = models.CharField(max_length=128)
    ingredients = models.ManyToManyField(Ingredient, through='RecipeIngredient')

class RecipeIngredient(models.Model):
    recipe = models.ForeignKey(Recipe)
    ingredient = models.ForeignKey(Ingredient)
    amount = models.CharField(max_length=128)


# Admin:

class RecipeIngredientInline(admin.TabularInline):
    model = Recipe.ingredients.through

class RecipeAdmin(admin.ModelAdmin):
    inlines = [RecipeIngredientInline,]

class IngredientAdmin(admin.ModelAdmin):
    pass

admin.site.register(Recipe,RecipeAdmin)
admin.site.register(Ingredient, IngredientAdmin)

b:

# Models:

class Recipe(models.Model):
    name = models.CharField(max_length=128)

class Ingredient(models.Model):
    name = models.CharField(max_length=128)
    recipe = models.ForeignKey(Recipe)


# Admin:

class IngredientInline(admin.TabularInline):
    model = Ingredient

class RecipeAdmin(admin.ModelAdmin):
    inlines = [IngredientInline,]

admin.site.register(Recipe,RecipeAdmin)

Answer 2

If I remember correctly (and it's been a while since I've done this part), you need to add the admin for Ingredient and set it to have the custom ModelForm. Then that form will be used in the inline version of Ingredient.