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Ruby irb无权访问我的模型(NameError:未初始化常量)_Ruby_Ruby On Rails 4 - Fatal编程技术网

Ruby irb无权访问我的模型(NameError:未初始化常量)

Ruby irb无权访问我的模型(NameError:未初始化常量),ruby,ruby-on-rails-4,Ruby,Ruby On Rails 4,我在尝试在IRB中创建新的“Pin”时收到此错误。例如: irb(main):001:0> @pin = Pin.first NameError: uninitialized constant Pin 或 我必须改变一些东西,因为它以前是有效的。不幸的是,我找不到错误 这是我的PIN控制器: class PinsController < ApplicationController before_action :authenticate_user!, except: [:in

我在尝试在IRB中创建新的“Pin”时收到此错误。例如:

irb(main):001:0> @pin = Pin.first
NameError: uninitialized constant Pin

我必须改变一些东西,因为它以前是有效的。不幸的是,我找不到错误

这是我的PIN控制器:

  class PinsController < ApplicationController
  before_action :authenticate_user!, except: [:index, :show]
  before_action :correct_user, only: [:edit, :update, :destroy]
  before_action :set_pin, only: [:show, :edit, :update, :destroy]

  def index
    @pins = Pin.all
  end

  def show
    @pin = Pin.find params[:id]
  end

  def new
    @pin = Pin.new
  end

  def edit
  end

  def create
    @pin = Pin.new(pin_params)
    if @pin.save
      redirect_to @pin, notice: 'Pin was successfully created.'
    else
      render action: 'new'
    end
  end

  def update
    if @pin.update(pin_params)
      redirect_to @pin, notice: 'Pin was successfully updated.'
    else
      render action: 'edit'
    end
  end

  def destroy
    @pin.destroy
    redirect_to pins_url
  end

  private

  # Use callbacks to share common setup or constraints between actions.
  def set_pin
    @pin = Pin.find(params[:id])
  end

  def correct_user
    @pin = current_user.pins.find(params[:id])
    redirect_to pins_path, notice: "Not allowed!" if @pin.nil?
  end

  # Never trust parameters from the scary internet, only allow the white list through.
  def pin_params
    params.require(:pin).permit(:description)
  end
end

irb
不会自动加载Rails环境,这就是为什么它无法访问您的模型(或助手、数据库或其他任何内容)。但是,“rails控制台”是一个irb会话,它确实加载所有rails类、数据库连接等

要启动rails控制台,请执行以下操作:

rails c
这是以下的简写:

rails console
这将启动开发环境的rails控制台。您可以使其连接到您的测试环境:

rails c RAILS_ENV=test
rails c RAILS_ENV=production
或到您的生产环境:

rails c RAILS_ENV=test
rails c RAILS_ENV=production

我不认为你想要
IRB
,我认为你想要
rails c
多么尴尬,哦。早期!
rails c RAILS_ENV=test
rails c RAILS_ENV=production