Rails - 嵌套路由和form_for

Question

我有routes.rb

resources :reckoners do
  resources: shift_requirements
end

在我支持新的shift_requirement时，我有 -

<%= form_for ([@reckoner, ShiftRequirment.new]) do |f| %>

但是这会调用路径'shift_requirement_path'而引发错误，尽管它引发错误的页面将是http://localhost:3000/reckoners/2/shift_requirements/new

的行

我的路线说

reckoner_shift_requirement GET    /reckoners/:reckoner_id/shift_requirements/:id(.:format)      shift_requirements#show

等

如何修复表单？

reckoner.rb has_many :shift_requirements和shift_reqiurement.rb belongs_to：reckoner

shift_requirements_controller.rb -

class ShiftRequirementsController < ApplicationController
  before_action :set_shift_requirement, only: [:show, :edit, :update, :destroy]

  # GET /shift_requirements
  # GET /shift_requirements.json
  def index
    @shift_requirements = ShiftRequirement.where(reckoner_id: params[:reckoner_id])
    @shift_requirement = ShiftRequirement.new
  end

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

  # GET /shift_requirements/new
  def new
    @shift_requirement = ShiftRequirement.new
  end

  # GET /shift_requirements/1/edit
  def edit
  end

  def create
    @shift_requirement = ShiftRequirement.new(shift_requirement_params)
    zero_ise @shift_requirement
    totalise_FTEs @shift_requirement

    respond_to do |format|
      if @shift_requirement.save
        format.html { redirect_to shift_requirements_path(reckoner_id:@shift_requirement.reckoner_id), notice: 'Shift requirement was successfully created.' }
        format.json { render :show, status: :created, location: @shift_requirement }
      else
        format.html { render :new }
        format.json { render json: @shift_requirement.errors, status: :unprocessable_entity }
      end
    end
  end

  def update
    totalise_FTEs @shift_requirement
    respond_to do |format|  
      if @shift_requirement.update(shift_requirement_params)

        format.html { redirect_to shift_requirements_path(reckoner_id: @shift_requirement.reckoner_id), notice: 'Shift requirement was successfully updated.' }
        format.json { render :show, status: :ok, location: @shift_requirement }
      else
        format.html { render :edit }
        format.json { render json: @shift_requirement.errors, status: :unprocessable_entity }
      end
    end
  end

  def destroy
    @shift_requirement.destroy
    respond_to do |format|
      format.html { redirect_to shift_requirements_url, notice: 'Shift requirement was successfully destroyed.' }
      format.json { head :no_content }
    end
  end

  private
    def set_shift_requirement
      @shift_requirement = ShiftRequirement.find(params[:id])
    end

    def shift_requirement_params
      params.require(:shift_requirement).permit(:shift, :hours, :mon_count, :tue_count, :wed_count, :thu_count, :fri_count, :sat_count, :sun_count, :TotalFTE, :reckoner_id)
    end

    def zero_ise(shift)
      shift.mon_count ||= 0.0
      shift.tue_count ||= 0.0
      shift.wed_count ||= 0.0
      shift.thu_count ||= 0.0
      shift.fri_count ||= 0.0
      shift.sat_count ||= 0.0
      shift.sun_count ||= 0.0
    end

    def totalise_FTEs(shift)
      zero_ise shift
      shift.TotalFTE = (shift.mon_count + shift.tue_count + shift.wed_count + shift.thu_count + shift.fri_count + shift.sat_count + shift.sun_count)*shift.hours/Reckoner.find_by_id(shift.reckoner_id).weekly_hours
    end
end

Answer 1

首先，您需要设置有新shift_requirement的Reckoner。以下是如何在控制器中执行此操作（编辑新的和创建操作。编辑索引操作以跟上最佳实践:)。还添加了一个before action和set_reckoner私有方法）

class ShiftRequirementsController < ApplicationController
  before_action :set_shift_requirement, only: [:show, :edit, :update, :destroy]
  before_action :set_reckoner

  # GET /shift_requirements
  # GET /shift_requirements.json
  def index
    @shift_requirements = @reckoner.shift_requirements.all
  end

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

  # GET /shift_requirements/new
  def new
    @shift_requirement = @reckoner.shift_requirements.new
  end

  # GET /shift_requirements/1/edit
  def edit
  end

  def create
    @shift_requirement = @reckoner.shift_requirements.new(shift_requirement_params)
    zero_ise @shift_requirement
    totalise_FTEs @shift_requirement

    respond_to do |format|
      if @shift_requirement.save
        format.html { redirect_to shift_requirements_path(reckoner_id:@shift_requirement.reckoner_id), notice: 'Shift requirement was successfully created.' }
        format.json { render :show, status: :created, location: @shift_requirement }
      else
        format.html { render :new }
        format.json { render json: @shift_requirement.errors, status: :unprocessable_entity }
      end
    end
  end

  def update
    totalise_FTEs @shift_requirement
    respond_to do |format|
      if @shift_requirement.update(shift_requirement_params)

        format.html { redirect_to shift_requirements_path(reckoner_id: @shift_requirement.reckoner_id), notice: 'Shift requirement was successfully updated.' }
        format.json { render :show, status: :ok, location: @shift_requirement }
      else
        format.html { render :edit }
        format.json { render json: @shift_requirement.errors, status: :unprocessable_entity }
      end
    end
  end

  def destroy
    @shift_requirement.destroy
    respond_to do |format|
      format.html { redirect_to shift_requirements_url, notice: 'Shift requirement was successfully destroyed.' }
      format.json { head :no_content }
    end
  end

  private
    def set_shift_requirement
      @shift_requirement = ShiftRequirement.find(params[:id])
    end

    def set_reckoner
      @reckoner = Reckoner.find(params[:reckoner_id])
    end

    def shift_requirement_params
      params.require(:shift_requirement).permit(:shift, :hours, :mon_count, :tue_count, :wed_count, :thu_count, :fri_count, :sat_count, :sun_count, :TotalFTE, :reckoner_id)
    end

    def zero_ise(shift)
      shift.mon_count ||= 0.0
      shift.tue_count ||= 0.0
      shift.wed_count ||= 0.0
      shift.thu_count ||= 0.0
      shift.fri_count ||= 0.0
      shift.sat_count ||= 0.0
      shift.sun_count ||= 0.0
    end

    def totalise_FTEs(shift)
      zero_ise shift
      shift.TotalFTE = (shift.mon_count + shift.tue_count + shift.wed_count + shift.thu_count + shift.fri_count + shift.sat_count + shift.sun_count)*shift.hours/Reckoner.find_by_id(shift.reckoner_id).weekly_hours
    end
end

然后在你的表单中执行此操作（）：

<%= form_for ([@reckoner, @shift_requirement]) do |f| %>