Question

您好，我无法通过表单将数据填充到在Rails应用程序中创建的表中。

我可以使用索引操作查看数据，但是在控制台中触发创建操作时，数据库中是否没有持久存储任何内容？

我在resources文件中使用config/routes.rb

耙道：

                                user_leads GET    /user_leads(.:format)                                                     user_leads#index
                                           POST   /user_leads(.:format)                                                     user_leads#create
                             new_user_lead GET    /user_leads/new(.:format)                                                 user_leads#new
                            edit_user_lead GET    /user_leads/:id/edit(.:format)                                            user_leads#edit
                                 user_lead GET    /user_leads/:id(.:format)                                                 user_leads#show
                                           PATCH  /user_leads/:id(.:format)                                                 user_leads#update
                                           PUT    /user_leads/:id(.:format)                                                 user_leads#update
                                           DELETE /user_leads/:id(.:format)                                                 user_leads#destroy

app / controllers / user_leads_controller.rb：

class UserLeadsController < ApplicationController

  def index
    @user_lead = UserLead.all.order("created_at DESC")
  end

  def new
    @user_lead = UserLead.new
  end

  def create
    @user_lead = UserLead.new(user_lead_params)
  end

  private

  def user_lead_params
    params.require(:user_lead).permit(:name, :businessname, :phone, :email, :amount)
  end
end

app / views / user_leads / new.html.erb

<%= form_for :user_lead, url: user_leads_path do |u| %>
  <p>
    <%= u.label :name %>
    <%= u.text_field :name %>
  </p>

  <p>
    <%= u.label :businessname %>
    <%= u.text_field :businessname %>
  </p>

  <p>
    <%= u.label :phone %>
    <%= u.text_field :phone %>
  </p>

  <p>
    <%= u.label :email %>
    <%= u.text_field :email %>
  </p>

  <p>
    <%= u.submit %>
  </p>

<% end %>

config / routes.rb：

resources :user_leads

以及发出发布请求时控制台中的输出：

Started POST "/user_leads" for 127.0.0.1 at 2018-09-29 11:28:48 +0100
Processing by UserLeadsController#create as HTML
  Parameters: {"utf8"=>"✓", "authenticity_token"=>"caJM7oMC7t3ATCnE0AyrnnKMOUi9vn7MPSj7jUadqCQZDQ9DPbUvn7pw5VMsf9+LFyAIxan9qTcBTfuwI2ygjQ==", "user_lead"=>{"name"=>"ffbgd", "businessname"=>"ret", "phone"=>"re", "email"=>"btgrfq"}, "commit"=>"Save User lead"}
No template found for UserLeadsController#create, rendering head :no_content
Completed 204 No Content in 39ms (ActiveRecord: 0.0ms)

Answer 1

您需要使用#create而不是#new：

def create
  @user_lead = UserLead.create(user_lead_params)
end

Answer 2

将控制器中的创建方法更改为：

 def create
    @user_lead = UserLead.new(user_lead_params)

    respond_to do |format|
      if @user_lead.save
        format.html { redirect_to user_leads_path, notice: 'UserLead was successfully created.' }
        format.json { render :show, status: :created, location: @user_lead }
      else
        format.html { render :new }
        format.json { render json: @user_lead.errors, status: :unprocessable_entity }
      end
    end
  end

Answer 3

应该是：

def create
  @user_lead = UserLead.create(user_lead_params)
end

在Rails中发布请求5

3 个答案: