Rails 应用程序：我在创建联合实例时遇到问题

Question

我想创建一个简单的应用程序，管理员可以在其中 post 他们的工作机会，普通用户可以申请这些工作机会。为此，我创建了一个关节 table:

我的用户模型：

class User < ApplicationRecord
  before_save { self.email = email.downcase }

  devise :database_authenticatable, :registerable,
         :recoverable, :rememberable, :validatable
  has_many :user_offers, dependent: :destroy
  has_many :offers, through: :user_offers, dependent: :destroy
  # Validations
  validates :name, :surname,  presence: true, length: { maximum: 50 }

end

我的报价型号：

class Offer < ApplicationRecord
  has_many :user_offers, dependent: :destroy
  has_many :users, through: :user_offers, dependent: :destroy
  validates :name, :number_of_candidates, :number_of_steps, presence: true
end

链接两者的模型：

class UserOffer < ApplicationRecord
  belongs_to :user
  belongs_to :offer
  has_many :steps, dependent: :destroy
  has_many :comments, through: :steps, dependent: :destroy
end

我希望能够在每个报价的显示页面上都有一个按钮，上面写着“申请”。当我单击该按钮时，我希望使用相应的用户 (current_user) 和报价 (params[:id]) 创建用户报价实例。我的问题是我不知道如何将 Apply 按钮连接到相应的控制器：

优惠控制器中的显示：

def show
    @offer = Offer.find(params[:id])

    # The button "apply" will be here.
    # We need to create a new useroffer and steps
    @user_offer = UserOffer.new
    @step = Step.new

  end

UserOffers 控制器中的 CREATE：

def create
    # This method will be accessed from the Offers Show page.
    # The params[:id] show the offer id
    # First, we get the corresponding offer:
    offer = Offer.find(params[:id])
    # Then, we asign the attributes of the new UserOffer:
    @user_offer = UserOffer.new
    @user_offer.user = current_user # setting the user of the useroffer
    @user_offer.offer = offer # setting the offer of the useroffer
    @user_offer.date_of_application = Date.today
    @user_offer.date_of_hiring = nil
    if @user_offer.save
      flash[:success] = "Congratulations on your application!"
      create_steps(@user_offer)
      # REDIRECT TO MY APPLICATIONS --> The route is not there yet...
    else
      flash[:danger] = "There was a problem with your application."
  end

演出观点：

<% unless current_user.is_admin %>
  <% if current_user.offers.include?(@offer) %>
    <%= render 'offers/unapply' %>
  <% else %>
    <%= render 'offers/apply' %>
  <% end %>
<% end %>

_apply.html.erb部分：

<%= simple_form_for [@offer, @user_offer] do |f| %>
  <%= f.button :submit %>
<% end %>

我在这个简单的问题上遇到了很多麻烦...

Answer 1

我认为您缺少指向 UserOffers 创建操作的路径

post 'offers/:id/apply', to: 'user_offers#create', :as => 'apply_for_offer'

然后在 apply.html.erb 部分你需要像

<%= simple_form_for ([@offer, @user_offer], method: :post, url: apply_for_offer_path) do |f| %>
  <%= f.button :submit %>
<% end %>

Rails 应用程序：我在创建联合实例时遇到问题

Rails app: I am having trouble creating joint instance

ruby-on-rails