Add forms

recipes/forms.py

@@ -0,0 +1,37 @@
+from django.forms import ModelForm, ValidationError, modelformset_factory, BooleanField
+from .models import Recipe, Version, Ingredient
+
+class RecipeForm(ModelForm):
+	class Meta:
+		model = Recipe
+		fields = ['title', 'slug']
+
+class VersionForm(ModelForm):
+	recipe_id: int
+
+	def __init__(self, *args, **kwargs):
+		placeholder = None
+		if 'author_placeholder' in kwargs:
+			placeholder = kwargs.pop('author_placeholder')
+		super().__init__(*args, **kwargs)
+		if placeholder:
+			self.fields['author'].widget.attrs.update({'placeholder': placeholder})
+
+	class Meta:
+		model = Version
+		fields = ['label', 'slug', 'body', 'author']
+
+	def clean_slug(self):
+		slug = self.cleaned_data['slug']
+		if 'slug' in self.changed_data:
+			recipe = Recipe.objects.get(id=self.recipe_id)
+			if recipe.versions.filter(slug=slug).count() > 0: # type: ignore
+				raise ValidationError('A recipe version with this slug already exists.')
+		return slug
+
+class IngredientForm(ModelForm):
+	class Meta:
+		model = Ingredient
+		fields = ['text']
+
+IngredientFormSet = modelformset_factory(Ingredient, fields=('text',), extra=1)