在 Rails 中提交多个表单的自定义操作

Question

所以我有这样的应用程序结构：一个 Game 模型，其中有许多 Allies 和许多 Enemies。

我想为 Game 创建一个自定义操作，专门用于创建和提交敌人和盟友。所以在视图中我将有 2 fields_for 你可以同时提交。

我从未在同一页面创建自定义路由和操作或提交 2 个子表单。

有人知道我该怎么做吗？谢谢

Answer 1

routes.rb

#this route shows the form
get 'create-players/:id', to 'game#new_players', as: :new_players
# this route recieves the form post submission
post 'create-players/:id', to 'game#create_players', as: :create_players

app/controllers/game_controller.rb:

def new_players
  @game = Game.find(params[:id])
end

def create_players
  #do whatever you want with the params passed from the form like
  @allies = Ally.create(game_id: params[:id], name: params[:ally_fields][:name])
  @enemies = Enemy.create(game_id: params[:id], name: params[:enemy_fields][:name])
  @game = Game.find(params[:id])
end

app/views/game/new_players.html.erb:

<%= form_tag(create_players_paths, @game.id), method: 'POST') do %>
  <% #...fields you have on models, perhaps %>
  <% fields_for :ally_fields do |f|
    <%= f.text_field :name, nil, placeholder: "Ally name", required: true
  <% end % >
  <% fields_for :enemy_fields do |f|
    <%= f.text_field :name, nil, placeholder: "Enemy name", required: true
  <% end % >
  <%= submit_tag "create players", class: "submit" %>
<% end %>

app/views/game/create_players.html.erb:

   <h1> Woah an allie and an enemy have been added to game <%= @game.id %></h1>
   <p> Lets see some blood!</p>

当然，您应该在处理 post 提交之前对输入进行验证。通常您会希望使用对象之间已建立的关系，以便您可以在视图上执行 @model = Modelname.new 然后 form_for @object 并以更简洁的方式访问验证和错误消息。

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