Question

我的应用程序有一个患者，其中有许多请求和附加功能，每当我尝试查看患者的附加信息时，我会收到以下错误：

NoMethodError in AdditionalsController#index

undefined method `additionals' for #<Patient:0x007fb3e7c1aaf0> Did you mean? additonals additonals=
Extracted source (around line #8):

6 @patient = Patient.find(params[:patient_id])
7 # Access all additionals for that patient
8 @additionals = @patient.additionals
9 end
10

patient.rb

class Patient < ApplicationRecord
  has_many :requests
  has_many :additonals
  def self.search(search_for)
    Patient.where("last_name = ?", search_for)
  end
end

additional.rb

class Additional < ApplicationRecord
  belongs_to :patient
 end

additional_controller.rb

class AdditionalsController < ApplicationController
  def index


 @patient = Patient.find(params[:patient_id])
    # Access all additionals for that patient
    @additionals = @patient.additionals
  end

  # GET /patients/1/additionals/2
  def show
    @patient = Patient.find(params[:patient_id])
    # For URL like /patients/1/additionals/2
    # Find an additional in patients 1 that has id=2
    @additional = @patient.additionals.find(params[:id])
  end
  # GET /patients/1/additionals/new
  def new
    @patient = Patient.find(params[:patient_id])
    # Associate an additional object with patient 1
    @additional = @patient.additionals.build
  end
  # POST /patients/1/additionals
  def create
    @patient = Patient.find(params[:patient_id])
    # For URL like /patients/1/additionals
    # Populate an additional associate with patient 1 with form data
    # Patient will be associated with the additional
    # @additional = @patient.additionals.build(params.require(:additional).permit!)
    @additional = @patient.additionals.build(params.require(:additional).permit(:date, :cost, :note))
    if @additional.save
    # Save the additional successfully
      redirect_to patient_additional_url(@patient, @additional)
    else
      render :action => "new"
    end
  end

  # GET /patients/1/additionals/2/edit
  def edit
    @patient = Patient.find(params[:patient_id])
    # For URL like /patients/1/additionals/2/edit
    # Get additional id=2 for patient 1
    @additional = @patient.additionals.find(params[:id])
  end
  # PUT /patients/1/additionals/2
  def update
    @patient = Patient.find(params[:patient_id])
    @additional = Additional.find(params[:id])
    if @additional.update_attributes(params.require(:additional).permit(:date, :cost, :note))
      # Save the additional successfully
      redirect_to patient_additional_url(@patient, @additional)
    else
      render :action => "edit"
    end
  end

# DELETE /patients/1/additionals/2
  def destroy
    @patient = Patient.find(params[:patient_id])
    @additional = Additional.find(params[:id])
    @additional.destroy
    respond_to do |format|
      format.html { redirect_to patient_additionals_path(@patient) }
      format.xml { head :ok }
    end
  end
end

编辑 - 已更新以显示完整的错误消息。

Answer 1

始终确保您阅读完整的错误消息。

看起来您的拼写错误additonals（来自＆＃34;您的意思是＆＃34;）

您很可能拼错了has_many :additionals关系。

Answer 2

在您拥有的has_many :additonals模型中：

has_many :additionals

应该是：

silent! unmap <C-E>

Rails - Controller中的NoMethodError

2 个答案: