feat: sort by labels in shopping list copy if labels toggled (#3226)

* feat: sort by labels in shopping list copy if labels toggled

* fix: call parent validator in shopping list item out (#3227)

* fix: add a unit test for (#3227)

* fixed messy post_validate logic

* feat: label headings in shopping list copy

* feat: blank line for each group in shopping list copy

---------

Co-authored-by: Michael Genson <71845777+michael-genson@users.noreply.github.com>

mealie/schema/group/group_shopping_list.py

@@ -101,7 +101,7 @@ class ShoppingListItemOut(ShoppingListItemBase):
     update_at: datetime | None = None
 
     @model_validator(mode="after")
-    def post_validate(self):
+    def populate_missing_label(self):
         # if we're missing a label, but the food has a label, use that as the label
         if (not self.label) and (self.food and self.food.label):
             self.label = self.food.label

mealie/schema/recipe/recipe.py

@@ -184,13 +184,13 @@ class Recipe(RecipeSummary):
     model_config = ConfigDict(from_attributes=True)
 
     @model_validator(mode="after")
-    def post_validate(self):
-        # the ingredient disable_amount property is unreliable,
-        # so we set it here and recalculate the display property
+    def calculate_missing_food_flags_and_format_display(self):
         disable_amount = self.settings.disable_amount if self.settings else True
         for ingredient in self.recipe_ingredient:
             ingredient.disable_amount = disable_amount
             ingredient.is_food = not ingredient.disable_amount
+
+            # recalculate the display property, since it depends on the disable_amount flag
             ingredient.display = ingredient._format_display()
 
         return self

mealie/schema/recipe/recipe_ingredient.py

@@ -145,7 +145,7 @@ class RecipeIngredientBase(MealieModel):
     """
 
     @model_validator(mode="after")
-    def post_validate(self):
+    def calculate_missing_food_flags(self):
         # calculate missing is_food and disable_amount values
         # we can't do this in a validator since they depend on each other
         if self.is_food is None and self.disable_amount is not None:
@@ -156,7 +156,10 @@ class RecipeIngredientBase(MealieModel):
             self.is_food = bool(self.food)
             self.disable_amount = not self.is_food
 
-        # format the display property
+        return self
+
+    @model_validator(mode="after")
+    def format_display(self):
         if not self.display:
             self.display = self._format_display()