Renamed Ingredient -> Food

Ingredient is now part of composition (meal/recipe/dish)

app/models/food.rb

@@ -1,4 +1,4 @@
-class Ingredient < ActiveRecord::Base
+class Food < ActiveRecord::Base
   enum group: {
     other: 0,
     dish: 1,
@@ -16,7 +16,7 @@ class Ingredient < ActiveRecord::Base
   belongs_to :ref_unit, class_name: 'Unit', required: true
   belongs_to :source, required: false
 
-  has_many :nutrients, inverse_of: :ingredient, dependent: :destroy, validate: true
+  has_many :nutrients, inverse_of: :food, dependent: :destroy, validate: true
   validates :nutrients, presence: true
   accepts_nested_attributes_for :nutrients, allow_destroy: true, reject_if: proc { |attrs|
     attrs['quantity_id'].blank? && attrs['amount'].blank?

app/models/meal.rb

@@ -0,0 +1,6 @@
+class Meal < ActiveRecord::Base
+  belongs_to :project, required: true
+
+  has_many :ingredients, as: :composition, dependent: :destroy
+  has_many :foods, through: :ingredients
+end

app/models/nutrient.rb

@@ -1,8 +1,8 @@
 class Nutrient < ActiveRecord::Base
-  belongs_to :ingredient, inverse_of: :nutrients, required: true
+  belongs_to :food, inverse_of: :nutrients, required: true
   belongs_to :quantity, required: true
   belongs_to :unit, required: true
 
-  validates :quantity, uniqueness: {scope: :ingredient_id}
+  validates :quantity, uniqueness: {scope: :food_id}
   validates :amount, numericality: {greater_than_or_equal_to: 0.0}
 end