i use rails 5 , simple form. in my app there is a Category model and there is a OnlineProduct model. i dont know why when i want to add some categories to my OnlineProduct association table remain empty and don't change.
Category model:
class Category < ApplicationRecord
has_ancestry
has_and_belongs_to_many :internet_products
end
InternetProduct model:
class InternetProduct < ApplicationRecord
belongs_to :user
belongs_to :business
has_and_belongs_to_many :categories
end
InternetProduct controller:
def new
@internet_product = InternetProduct.new
end
def create
@internet_product = InternetProduct.new(internet_product_params)
respond_to do |format|
if @internet_product.save
format.html { redirect_to @internet_product, notice: 'Internet product was successfully created.' }
format.json { render :show, status: :created, location: @internet_product }
else
format.html { render :new }
format.json { render json: @internet_product.errors, status: :unprocessable_entity }
end
end
end
private:
def internet_product_params
params.require(:internet_product).permit(:name, :description, :mainpic, :terms_of_use,
:real_price, :price_discount, :percent_discount,
:start_date, :expire_date, :couponـlimitation, :slung,
:title, :meta_data, :meta_keyword, :enability, :status,
:like, :free_delivery, :garanty, :waranty, :money_back,
:user_id, :business_id,
categoriesـattributes: [:id, :title])
end
and in the view only the part of who relate to categories :
<%= f.association :categories %>
all the categories list in view (form) but when i select some of them not save in database. in rails console i do this
p = InternetProduct.find(5)
p.categories = Category.find(1,2,3)
this save to database without any problem, what should i do ? tanks for reading this
I found solution to solve this. when we use has_and_belong_to_many or any other relation , if you want to use collection select in simple_form , in the model also should be add this command for nesting form
accepts_nested_attributes_for :categories
also in the controller in related method for example in the new we should
def new
@internet_product = InternetProduct.new
@internet_product.categories.build
end
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