與軌道4

Question

嵌套範圍中我有2個範圍：with_category和simple_search。他們每個人都很好地獨立工作，但是我無法得到我需要的東西。

product.rb

has_many :categorizations, :dependent => :destroy 
has_many :categories, :through => :categorizations 

scope :with_category, lambda { |category_slug| 
    return {} if category_slug.blank? 

    joins(:categorizations => :category).where('categorizations.category_id = ?', Category.find_by_slug(category_slug).id).uniq 
    } 

    scope :simple_search, lambda { |query| 
    return {} if query.blank? 

    where('"products"."name" ~* ? OR "products"."description" ~* ?', query, query) 
    } 

products_controller.rb

def index 
    @products = Product.with_category(params[:category]) 
        .simple_search(params[:query]) 
        .paginate(:page => params[:page], :per_page => 10) 
end 

當我去localhost:3000/products?category=apple-laptops我想抓住當前類別中的所有產品。相反，這是我with_category的範圍被忽略，我能看到的所有產品。不知道爲什麼會發生這種情況。

從我的日誌：

Product Load (0.9ms) SELECT "products".* FROM "products" LIMIT 10 OFFSET 0 
    Category Load (0.7ms) SELECT "categories".* FROM "categories" INNER JOIN "categorizations" ON "categories"."id" = "categorizations"."category_id" WHERE "categorizations"."product_id" = $1 [["product_id", 2]] 
    Category Load (0.8ms) SELECT "categories".* FROM "categories" INNER JOIN "categorizations" ON "categories"."id" = "categorizations"."category_id" WHERE "categorizations"."product_id" = $1 [["product_id", 4]] 
    Category Load (0.7ms) SELECT "categories".* FROM "categories" INNER JOIN "categorizations" ON "categories"."id" = "categorizations"."category_id" WHERE "categorizations"."product_id" = $1 [["product_id", 10]] 
    Category Load (0.8ms) SELECT "categories".* FROM "categories" INNER JOIN "categorizations" ON "categories"."id" = "categorizations"."category_id" WHERE "categorizations"."product_id" = $1 [["product_id", 5]] 
    Category Load (0.7ms) SELECT "categories".* FROM "categories" INNER JOIN "categorizations" ON "categories"."id" = "categorizations"."category_id" WHERE "categorizations"."product_id" = $1 [["product_id", 18]] 
    Category Load (0.7ms) SELECT "categories".* FROM "categories" INNER JOIN "categorizations" ON "categories"."id" = "categorizations"."category_id" WHERE "categorizations"."product_id" = $1 [["product_id", 1]] 
    Category Load (0.8ms) SELECT "categories".* FROM "categories" INNER JOIN "categorizations" ON "categories"."id" = "categorizations"."category_id" WHERE "categorizations"."product_id" = $1 [["product_id", 3]] 
    Category Load (0.7ms) SELECT "categories".* FROM "categories" INNER JOIN "categorizations" ON "categories"."id" = "categorizations"."category_id" WHERE "categorizations"."product_id" = $1 [["product_id", 15]] 

Answer 1

您是否嘗試過改變你的範圍也是這樣嗎？

scope :with_category, lambda { |category_slug| 
    joins(:categorizations => :category).where('categorizations.category_id = ?', Category.find_by_slug(category_slug).id).uniq unless category_slug.blank? 
} 

scope :simple_search, lambda { |query| 
    where('"products"."name" ~* ? OR "products"."description" ~* ?', query, query) unless query.blank? 
}