Question

ingredient.rb:

class Ingredient < ActiveRecord::Base
  has_many :recipes, :through => :ingredients_with_quantities
  has_many :ingredients_with_quantities

ingredient_with_quantity.rb:

class IngredientWithQuantity < ActiveRecord::Base
  belongs_to :recipe
  belongs_to :ingredient

recipe.rb:

class Recipe < ActiveRecord::Base
  has_many :ingredients, :through => :ingredients_with_quantities
  has_many :ingredients_with_quantities

I would like to make a query which get all recipes that includes a specific ingredient name.

Tried this query:

Recipe.find(:all, :include => {:ingredients_with_quantities => :ingredients}, :conditions => "ingredients.name = 'ingredient1'")

But I get this error:

NameError: uninitialized constant Recipe::IngredientsWithQuantity

Can someone tell me whats wrong with the query?

I can make a successfull query in SQL with:

SELECT r . * FROM recipes r, ingredient_with_quantities iq, ingredients i 
WHERE i.name =  "ingredient1"
AND iq.recipe_id = r.id 
AND iq.ingredient_id = i.id

How does this query looks in Rails with ActiveRecord?

Thanks for helping me out!!

Answer 1

It is :ingredient_with_quantities rather than :ingredients_with_quantities (you put a “s” after ingredient)