向用户添加了详细信息，但价值没有得到体现

Question

[当用户注册时，我在设计中添加了一个额外的字段：“ barge_name”，当我进入注册页面时，我输入了一个barge_name，电子邮件地址和密码，所有这些都可以使用。

但是当我尝试使用rails c时，User.first是说barge_name为nil，我不知道为什么注册时未获取该值？有人可以帮我吗？

 #<User id: 1, email: "[email protected]", created_at: "2019-10-31 17:43:21", updated_at: "2019-10-31 17:43:21", barge_name: nil>]

模式

  create_table "users", force: :cascade do |t|
    t.string "email", default: "", null: false
    t.string "encrypted_password", default: "", null: false
    t.string "reset_password_token"
    t.datetime "reset_password_sent_at"
    t.datetime "remember_created_at"
    t.datetime "created_at", null: false
    t.datetime "updated_at", null: false
    t.string "barge_name"
    t.index ["email"], name: "index_users_on_email", unique: true
    t.index ["reset_password_token"], name: "index_users_on_reset_password_token", unique: true
  end

迁移文件

class AddDetailsToUsers < ActiveRecord::Migration[5.2]
  def change
     add_column :users, :barge_name, :string
  end
end

class DeviseCreateUsers < ActiveRecord::Migration[5.2]
  def change
    create_table :users do |t|
      ## Database authenticatable
      t.string :email,              null: false, default: ""
      t.string :encrypted_password, null: false, default: ""

      ## Recoverable
      t.string   :reset_password_token
      t.datetime :reset_password_sent_at

      ## Rememberable
      t.datetime :remember_created_at

    add_index :users, :email,                unique: true
    add_index :users, :reset_password_token, unique: true

  end
end

表格

<h2>Sign up</h2>

<%= simple_form_for(resource, as: resource_name, url: registration_path(resource_name)) do |f| %>
  <%= f.error_notification %>

  <div class="form-inputs">
     <%= f.input :barge_name,
                required: true,
                autofocus: true,
                input_html: { autocomplete: "bargename" }%>
    <%= f.input :email,
                required: true,
                autofocus: true,
                input_html: { autocomplete: "email" }%>
    <%= f.input :password,
                required: true,
                hint: ("#{@minimum_password_length} characters minimum" if @minimum_password_length),
                input_html: { autocomplete: "new-password" } %>
    <%= f.input :password_confirmation,
                required: true,
                input_html: { autocomplete: "new-password" } %>
  </div>

  <div class="form-actions">
    <%= f.button :submit, "Sign up" %>
  </div>
<% end %>

<%= render "devise/shared/links" %>

控制器

class PositionsController < ApplicationController
  def new
    @position = Position.new
  end

  def index
    @positions = Position.all
  end

  def show
    @position = Position.find(params[:id])
  end

  def create
    @position = Position.new(position_params)
    if @position.save!
      redirect_to @position
      PositionMailer.general_message(@position).deliver

    else
      render :new
    end
  end

  private def position_params
    params.require(:position).permit(:date, :time, :activity, :tripnumber)

  end
end

Answer 1

您不允许barge_name参数，请尝试：

class PositionsController < ApplicationController
  def new
    @position = Position.new
  end

  def index
    @positions = Position.all
  end

  def show
    @position = Position.find(params[:id])
  end

  def create
    @position = Position.new(position_params)
    if @position.save!
      redirect_to @position
      PositionMailer.general_message(@position).deliver

    else
      render :new
    end
  end

  private

  def position_params
    params.require(:position).permit(:date, :time, :activity, :tripnumber, :barge_name)
  end
end