Rails has_and_belongs_to_many И collection_check_boxes

Question

Так что это не ошибка, мой присоединиться к таблице просто не заселяется с какой-либо информации ... @ lead.districts возвращает район :: ActiveRecord_Associations_CollectionProxy вместо ожидаемого текста ...

Где я совершил свою ошибку?

new.html.erb

<%= link_to("<< Back to List", {:action => 'index'}, :class => 'back-link') %> 

<div class="subjects new"> 

    <h2>Create Lead</h2> 

    <%= form_for(:lead, :url => {:action => 'create'}) do |f| %> 

    <table cellspacing="0"> 
     <tr> 
      <th>First Name</th> 
      <td><%= f.text_field(:first_name) %></td> 
     </tr> 
     <tr> 
      <th>Last Name</th> 
      <td><%= f.text_field(:last_name)%></td> 
     </tr> 
     <tr> 
      <th>Phone Number</th> 
      <td><%= f.text_field(:phone_number)%></td> 
     </tr> 
     <tr> 
      <th>Email</th> 
      <td><%= f.text_field(:email)%></td> 
     </tr> 
     <tr> 
      <th>Move-in Date</th> 
      <td><%= f.date_field(:move_in_date, min: Date.today)%></td> 
     </tr> 
     <tr> 
      <th>Bedrooms</th> 
      <td><%= f.text_field(:beds)%></td> 
     </tr> 
     <tr> 
      <th>Bathrooms</th> 
      <td><%= f.text_field(:baths)%></td> 
     </tr> 
     <tr> 
      <th>Maximum Price Considered</th> 
      <td><%= f.text_field(:maxprice)%></td> 
     </tr> 
     <tr> 
      <th>Preferred Neighborhoods</th> 
      <td> 
      <%= collection_check_boxes(:lead, :district_ids, District.all.order("districts.name ASC"), :id, :name)%> 
      </td> 

     </tr> 
     <tr> 
      <th>Have you ever broken a lease?</th> 
      <td> 
      <%= f.label :broken_lease, "Yes", :value => true %> 
      <%= f.radio_button :broken_lease, true %> 
      <%= f.label :broken_lease, "No", :value => false %> 
      <%= f.radio_button :broken_lease, false %> 
      </td> 
     </tr> 
     <tr> 
      <th>Have you ever been convicted of a felony?</th> 
      <td> 
      <%= f.label :felon, "Yes", :value => true %> 
      <%= f.radio_button :felon, true %> 
      <%= f.label :felon, "No", :value => false %> 
      <%= f.radio_button :felon, false %> 
      </td> 
     </tr> 
     <tr> 
      <th>Do you have any pets?</th> 
      <td> 
      <%= f.label :pets, "Yes", :value => true %> 
      <%= f.radio_button :pets, true %> 
      <%= f.label :pets, "No", :value => false %> 
      <%= f.radio_button :pets, false %> 
      </td> 
     </tr> 
     <tr> 
      <th>If so, please provide a brief description</th> 
      <td><%= f.text_area(:pets_description)%></td> 
     </tr> 
    </table> 

    <div class="form-buttons"> 
    <%= submit_tag("Create Lead") %> 
    </div> 

    <% end %> 
</div> 

leads_controller.rb

class LeadsController < ApplicationController 

    layout false 

    def index 
    @leads = Lead.order("leads.created_at DESC") 
    end 

    def show 
    @lead = Lead.find(params[:id]) 
    end 

    def new 
    @lead = Lead.new 
    @districts = District.all.order("districts.name ASC") 

    end 

    def create 
    @lead = Lead.new(lead_params) 

    if @lead.save 
     redirect_to(:action => 'index') 
    else 
     render('new') 
    end 

    end 

    def edit 
    @lead = Lead.find(params[:id]) 

    end 

    def update 
    @lead = Lead.find(params[:id]) 

    if @lead.update_attributes(lead_params) 
     redirect_to(:action => 'show', :id => @lead.id) 
    else 
     render('edit') 
    end 
    end 

    def delete 
    @lead = Lead.find(params[:id]) 

    end 

    def destroy 
    lead = Lead.find(params[:id]).destroy 
    flash[:notice] = "Lead '#{lead.id}' deleted successfully." 
    redirect_to(:action => 'index') 
    end 

    private 
    def lead_params 
     params.require(:lead).permit(:first_name, :last_name, :phone_number, :email, :move_in_date, :beds, :baths, :maxprice, :broken_lease, :felon, :pets, :pets_description, :district => []) 

    end 


end 

districts_controller.rb

class DistrictsController < ApplicationController 

    layout false 

    def index 
    @districts = District.order("districts.name ASC") 
    end 

    def show 
    @district = District.find(params[:id]) 
    end 

    def new 
    @district = District.new 
    end 

    def create 
    @district = District.new(district_params) 

    if @district.save 
     flash[:notice] = "District created successfully." 
     redirect_to(:action => 'index') 
    else 
     render('new') 
    end 

    end 

    def edit 
    @district = District.find(params[:id]) 
    end 

    def update 
    @district = District.find(params[:id]) 

    if @district.update_attributes(district_params) 
     flash[:notice] = "District updated successfully." 
     redirect_to(:action => 'show', :id => @district.id) 
    else 
     render('edit') 
    end 
    end 

    def delete 
    @district = District.find(params[:id]) 

    end 

    def destroy 
    district = District.find(params[:id]).destroy 
    flash[:notice] = "District '#{district.name}' deleted successfully." 
    redirect_to(:action => 'index') 
    end 


    private 
    def district_params 
     params.require(:district).permit(:name) 

    end 


end 

district.rb

class District < ActiveRecord::Base 

    has_and_belongs_to_many :leads 

end 

lead.rb

class Lead < ActiveRecord::Base 

    has_and_belongs_to_many :districts 

end 

Регистрация миграции таблицы:

class CreateDistrictsLeadsJoin < ActiveRecord::Migration 
    def change 
    create_table :districts_leads, :id => false do |t| 
     t.integer "district_id" 
     t.integer "lead_id" 
    end 
    add_index :districts_leads, ["district_id", "lead_id"] 
    end 
end 

Answer 1

Моя ошибка была в массе назначая мой PARAMS (используются: район должен был: district_ids)

Правильная PARAMS функция:

# leads_controller.rb 
    private 
    def lead_params 
     params.require(:lead).permit(:first_name, :last_name, :phone_number, :email, :move_in_date, :beds, :baths, :maxprice, :broken_lease, :felon, :pets, :pets_description, :district_ids => []) 

    end 

Answer 2

Вам нужно будет добавить ведет к округу и районы к отведениям в обеих создании методов.

def create # in LeadsController 
    @lead = Lead.new(lead_params) 

    if @lead.save 
     district = District.find(...) #find district to associate 
     district.leads << @lead #add lead to district 

     redirect_to(:action => 'index') 
    else 
     render('new') 
    end 
    end 

Answer 3

#leads_controller.rb 
def create 
    @lead = Lead.new(lead_params) 

    if @lead.save 
    selected_dis = params['lead_district_ids'] #[3,4,5] 
    districts = District.where(id: selected_dis).first 
    #check how you getting district params and use that to fetch orders. 
     districts.each do |d| 
     @lead.districts << d 
     #assumming your one lead can have many districts. 
     end 
     redirect_to leads_path 
    else 
     render :new 
    end 

    end