Question

我试图将表单数据存储到数据库中，但是输入了null值，可能是什么问题？我的视图form.html.erb文件是

  <%= form_for(@cattle_client) do |f| %>
    <% if @cattle_client.errors.any? %>
      <div id="error_explanation">
        <h2><%= pluralize(@cattle_client.errors.count, "error") %> prohibited this cattle_client from being saved:</h2>

      <ul>
        <% @cattle_client.errors.full_messages.each do |message| %>
          <li><%= message %></li>
        <% end %>
      </ul>
    </div>
  <% end %>

    <div class="field">
      <%= f.label :client_name %><br>
      <%= f.text_field :client_name %>
    </div>
    <div class="field">
      <%= f.label :milk %><br>
      <%= f.number_field :milk %>
    </div>
    <div class="field">
      <%= f.label :date %><br>
      <%= f.date_select :date %>
    </div>
    <div class="actions">
      <%= f.submit %>
    </div>
  <% end %>

我的cattle_clients_controller.rb是

    class CattleClientsController < ApplicationController
      before_action :set_cattle_client, only: [:show, :edit, :update, :destroy]

      # GET /cattle_clients
      # GET /cattle_clients.json
      def index
        @cattle_clients = CattleClient.all
      end

      # GET /cattle_clients/1
      # GET /cattle_clients/1.json
      def show
      end

      # GET /cattle_clients/new
      def new
        @cattle_client = CattleClient.new
      end

      # GET /cattle_clients/1/edit
      def edit
      end

      # POST /cattle_clients
      # POST /cattle_clients.json
      def create
        @cattle_client = CattleClient.new(cattle_client_params)

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

      # PATCH/PUT /cattle_clients/1
      # PATCH/PUT /cattle_clients/1.json
      def update
        respond_to do |format|
          if @cattle_client.update(cattle_client_params)
            format.html { redirect_to @cattle_client, notice: 'Cattle client was successfully updated.' }
           format.json { render :show, status: :ok, location: @cattle_client }
          else
            format.html { render :edit }
            format.json { render json: @cattle_client.errors, status: :unprocessable_entity }
          end
        end
      end

      # DELETE /cattle_clients/1
      # DELETE /cattle_clients/1.json
      def destroy
        @cattle_client.destroy
        respond_to do |format|
          format.html { redirect_to cattle_clients_url, notice: 'Cattle client was successfully destroyed.' }
          format.json { head :no_content }
        end
      end

      private
        # Use callbacks to share common setup or constraints between actions.
        def set_cattle_client
          @cattle_client = CattleClient.find(params[:id])
        end

        # Never trust parameters from the scary internet, only allow the white list through.
        def cattle_client_params
          params.require(:cattle_client).permit(:client_name, :milk, :date)
        end
    end

我的路线档案有

     resources :cattle_clients

有人帮我确定问题所在吗？

我的迁移文件是

    class CreateCattleClients < ActiveRecord::Migration
      def change
        create_table :cattle_clients do |t|
          t.string :client_name
          t.integer :milk
          t.date :date

          t.timestamps null: false
       end
     end
   end

模型是

    class CattleClient < ActiveRecord::Base
    end

Answer 1

我必须将我的模型文件编辑为像这样的工具

  class CattleClient < ActiveRecord::Base
      attr_accessible :client_name, :milk, :date
  end

感谢@Matt，Pavan，Max和其他所有人的贡献，我很欣赏

rails表示数据未保存到数据库中

1 个答案: