Question

我正在尝试创建一个DRY表单，我可以将其用作form_fields，用于不同视图中的其他嵌套表单。我有两个问题。

我希望_form部分没有提交按钮，而是在表单上放置此按钮。但是，单击它当前位置的提交按钮什么都不做？
表单在当前状态下显示正常。如果我将提交按钮移到_form只是为了看到它保存，我收到了uninitialized constant UsersController的路由错误？

我的代码：

的routes.rb

devise_for :users

resources :users do
  resources :projects
end

user.rb模型 - 我正在使用Devise。

class User < ApplicationRecord
  devise :database_authenticatable, :registerable,
         :recoverable, :rememberable, :trackable

  validates :password, :presence => true,
                       :on => :create,
                       :format => {:with => /\A.*(?=.{8,})(?=.*\d)(?=.*[\@\#\$\%\^\&\+\=]).*\Z/ }

  has_many :projects, inverse_of: :user
  accepts_nested_attributes_for :projects

end

projects.rb模型

class Project < ApplicationRecord
  belongs_to :user, inverse_of: :projects
  ...
end

projects_controller.rb

class ProjectsController < ApplicationController

...

def new
  @project = current_user.projects.build
end

def create
  @project = current_user.projects.new(project_params)
  if @project.save
    redirect_to root_path, notice: 'Your project is being reviewed. We will be in contact soon!'
  else
    render :new
  end
end

...

private

...

def project_params
  params.require(:project)
        .permit(
          :user_id, :project_type_id, :name, :industry_id, 
          :description, :budget_id, :project_status_id, feature_ids:[], addon_ids:[]
        )
end

end

_form.html.erb部分视图

<%= form_for @project do |f| %>      
  <div class="project_form">
    <ol>
      <div class="field entry_box">
        <li><%= f.label "Give your project a name" %>
        <%= f.text_field :name, placeholder: "A short name", class: "form-control entry_field" %></li>
      </div>

      ...... # All of the other form fields

      <div class="field entry_box">
        <li><%= f.label "What budget do you have in mind?" %>
        <%= collection_select(:project, :budget_id, Budget.all, :id, :list_of_budgets, {include_blank: 'Please select'}, {class: "form-control entry_field"} ) %></li>
      </div>
    </ol>
    # No f.submit button -> moved to view
  </div>
<% end %>

新项目的new.html.erb视图

<div class="container">
  <div class="center">
    <h1>New Project</h1>
  </div>

  <%= form_for current_user do |f| %>
    <%= f.fields_for @project do |builder| %>
      <%= render 'form', :locals =>  { f: builder } %>
    <% end %>
    <div class="actions center space_big">
      <%= f.submit "Save Project", class: "btn btn-lg btn-success" %>
    </div>
  <% end %>
</div>

如何让提交按钮在当前位置工作？
导致uninitialized constant UsersController

Answer 1

在_form部分中，您不需要第一行即form_for，因为您已经通过了f这是form ('builder')的{{1}}对象，因为您在projects区块内创建了它。

所以这么做会：

fields_for @project

并在<div class="project_form"> <ol> <div class="field entry_box"> <li><%= f.label "Give your project a name" %> <%= f.text_field :name, placeholder: "A short name", class: "form-control entry_field" %></li> </div> ...... # All of the other form fields <div class="field entry_box"> <li><%= f.label "What budget do you have in mind?" %> <%= collection_select(:project, :budget_id, Budget.all, :id, :list_of_budgets, {include_blank: 'Please select'}, {class: "form-control entry_field"} ) %></li> </div> </ol> # No f.submit button -> moved to view </div>更改form_for current_user行中添加如下内容：

render

并且你得到的是<%= render partial: 'form', :locals => { f: builder } %>，因为你没有controller error并且UsersController正在nested_form User所以你应该拥有current_user此代码位于UsersController＆＃39; new操作中，build位于用户项目中。

Rails DRY多个视图的嵌套表单

1 个答案: