通过关联创建一个has_many动作来分配喜欢的类别

问题描述 投票:0回答:1

Problem

我正在尝试创建一个名为category_profiles的中间表,是一个中间表,为我的配置文件分配喜欢的类别,但我无法访问category_ids,我放在我的表单中,总是我得到相同的验证,类别没有不存在:

Code:

class CategoryProfile < ApplicationRecord
  belongs_to :profile
  belongs_to :category
end

class Category < ApplicationRecord
has_many :category_profiles
has_many :profiles, through: :category_profiles

class Profile < ApplicationRecord
has_many :category_profiles
has_many :categories, through: :category_profiles

当我在进行创建操作时,我的控制器无法找到我的类别。我如何解决它?

我的创建动作永远不会找到我的类别的ID来分配给category_profiles。它有很多关系:

Module Account

  class FavoritesController < Account::ApplicationController

    before_action :set_category_profile

    def index
      @favorites = @profile.categories

    end

    def new
      @categories = Category.all
      @category_profile = CategoryProfile.new
    end

    def create
      @category_profile = @profile.category_profiles.new(category_profile_params)
      if @category_profile.save
        flash[:success] = t('controller.create.success',
                            resource: CategoryProfile.model_name.human)
        redirect_to account_favorites_url
      else
        flash[:warning] = @category_profile.errors.full_messages.to_sentence
        redirect_to account_favorites_url
      end
    end

    def destroy
    end

    private
    def set_category_profile
      @category_profile = CategoryProfile.find_by(params[:id])
    end

    def category_profile_params
      params.permit(:profile_id,
                      category_ids:[])
    end
end
end

Form

<%= bootstrap_form_with(model: @category,method: :post ,  local: true, html: { novalidate: true, class: 'needs-validation' }) do |f| %>
  <div class="form-group">
    <%= collection_check_boxes(:category_ids, :id, Category.all.kept.children.order(name: :asc), :id, :name, {}, { :multiple => true} ) do |b| %>
      <%= b.label class: 'w-1/6 mr-4' %>
      <%= b.check_box class: 'w-1/7 mr-4' %>
    <%end %>
  </div>
  <div class="md:flex justify-center">
    <%= f.submit 'Guardar categoría favorita', class: 'btn btn-primary' %>
  </div>
<% end %>
ruby-on-rails ruby
1个回答
0
投票

好像你只想更新中间表。所以你可以这样做。

def create
  begin
    @profile.categories << Category.find(params[:category_ids])

                          Or

    params[:category_ids].each do |category_id|
      @profile.category_profiles.create(category_id: category_id)
    end

    flash[:success] = t('controller.create.success',
                        resource: CategoryProfile.model_name.human)
    redirect_to account_favorites_url
  rescue
    flash[:warning] = @category_profile.errors.full_messages.to_sentence
    redirect_to account_favorites_url
  end
end

需要找到其他更好的方法来使用事务块或其他东西进行错误处理。

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