Rails 让用户创建用户答案

【问题标题】：Rails Letting users create usersRails 让用户创建用户
【发布时间】：2017-02-01 20:18:18
【问题描述】：

我有一个使用完美运行的设计的 rails 应用程序。我现在希望用户能够提供他们以前客户的详细信息，我想将这些详细信息添加到用户表中。但是，每当它尝试创建新用户时，它都会失败，因为它正在尝试使用当前会话持有者 ID 创建用户。救命！

控制器

class Suppliers::PreviousProjectsController < ApplicationController
before_action :authenticate_user!

def new
    @new_user = User.new
end

def create
    @new_user = User.new(previous_projects_params)
    if @new_user.save
        redirect_to root_path, notice: 'Previous customer created'
    else
        render :new
    end
end

protected
    def previous_projects_params
        params.require(:user)
                    .permit(:first_name, :last_name, :phone, :email)
    end


end

路线

get "suppliers/previous_projects/new" => 'suppliers/previous_projects#new'
post "suppliers/previous_projects/create" => 'suppliers/previous_projects#create'

查看

<div id="customer_dashboard">
<div class="container-fluid">
<div class="row">
  <div class="col-sm-3 col-md-2 sidebar">
      <%= render 'customers/menu' %>
  </div>
  <div class="col-sm-9 col-sm-offset-3 col-md-10 col-md-offset-2 main">
            <h1 class="page-header"><%= @title %></h1>
            <div class= "project_form">
                <%= form_for(@user, url:  suppliers_previous_projects_create_path(@user)) do |f| %>
                  <div class="form-group col-sm-6">
                    <%= f.label :first_name, class: "required" %><br />
                    <%= f.text_field :first_name, autofocus: true, :required => 'required', class: "form-control" %>
                  </div>

                  <div class="form-group col-sm-6">
                    <%= f.label :last_name, class: "required" %><br />
                    <%= f.text_field :last_name, :required => 'required', class: "form-control" %>
                  </div>

                  <div class="form-group col-sm-6">
                    <%= f.label "Mobile Number", class: "required" %><br />
                    <%= f.text_field :phone, :required => 'required', class: "form-control" %>
                  </div>

                  <div class="form-group col-sm-6">
                    <%= f.label :email, class: "required" %><br />
                    <%= f.email_field :email, :required => 'required', class: "form-control" %>
                  </div>
                    <div class="actions center space_big">
                        <%= f.submit "Save User", class: "btn btn-lg btn-success" %>
                    </div>
                <% end %>
            </div>
        </div>
    </div>
</div>

日志

Started POST "/suppliers/previous_projects/create" for ::1 at 2017-01-27 11:04:08 +0200
Processing by Suppliers::PreviousProjectsController#create as HTML
Parameters: {"utf8"=>"✓", "authenticity_token"=>"u+/ydnO4lSBcJtuqOWNiqccRWosTydAZ3Kd81wwO+DbveFRUYw53JsI0x6bolaSQTapgSrw6njnboBDFfSNlIw==", "user"=>{"first_name"=>"Stev", "last_name"=>"Three", "phone"=>"23092309029309", "email"=>"steve3@example.com"}, "commit"=>"Save User"}
User Load (0.5ms)  SELECT  "users".* FROM "users" WHERE "users"."id" = $1 ORDER BY "users"."id" ASC LIMIT $2  [["id", 2], ["LIMIT", 1]]
(0.2ms)  BEGIN
User Exists (1.1ms)  SELECT  1 AS one FROM "users" WHERE "users"."email" = $1 LIMIT $2  [["email", "steve3@example.com"], ["LIMIT", 1]]
(0.8ms)  ROLLBACK
Rendering suppliers/previous_projects/new.html.erb within layouts/application
Rendered customers/_menu.html.erb (2.8ms)
Rendered suppliers/previous_projects/new.html.erb within layouts/application (16.3ms)
Completed 200 OK in 152ms (Views: 141.6ms | ActiveRecord: 2.5ms)

仅供参考 - 在这种情况下，用户应该有一个新的 id。相反，它试图给用户一个 id 2，这是创建用户的 id。非常感谢任何帮助！

更新

如果我使用完全随机的电子邮件地址，这是一个单独的日志条目

Started POST "/suppliers/previous_projects/create" for ::1 at 2017-01-27 16:33:25 +0200
Processing by Suppliers::PreviousProjectsController#create as HTML
Parameters: {"utf8"=>"✓", "authenticity_token"=>"ezEpssYnOU1LProVW4I14qKjINcRfs2/EJdsHlrSGc/bzZUxny8NbbQJgEjEZljWxtyqhJ+mwYBkyGuiitjqeg==", "user"=>{"first_name"=>"Random First Name", "last_name"=>"Random Last Name", "phone"=>"093409239032902", "email"=>"ThisIsSomeRandomEmail@Email.com"}, "commit"=>"Save User"}
(0.9ms)  BEGIN
User Exists (0.7ms)  SELECT  1 AS one FROM "users" WHERE "users"."email" = $1 LIMIT $2  [["email", "thisissomerandomemail@email.com"], ["LIMIT", 1]]
(12.1ms)  ROLLBACK
Rendering suppliers/previous_projects/new.html.erb within layouts/application
User Load (0.4ms)  SELECT  "users".* FROM "users" WHERE "users"."id" = $1 ORDER BY "users"."id" ASC LIMIT $2  [["id", 2], ["LIMIT", 1]]
Rendered customers/_menu.html.erb (5.7ms)
Rendered suppliers/previous_projects/new.html.erb within layouts/application (13.2ms)
Completed 200 OK in 161ms (Views: 113.4ms | ActiveRecord: 14.2ms)

【问题讨论】：

标签： ruby-on-rails devise

【解决方案1】：

我能够通过以下方式解决这个问题： 1. 将变量从@user 更改为@new_user。 2. 使用 :url 在表单中规定创建动作和控制器 3. 使用 Pry 设置断点并预测出问题的地方（binding.pry 确实改变了我的生活！！）

【讨论】：