Question

我正在尝试使用angular js post请求向我的rails api发送帖子请求但我收到此错误：

index.php

我正试图找到一种方法如何使用angular to rails api发送帖子请求。我在rails中的控制器是这样的：

  require_once('/home/sites/example.co.uk/public_html/retail/uploads/wordpress/wp-load.php');
        require_once('/home/sites/example.co.uk/public_html/retail/uploads/wordpress/wp-blog-header.php');

这是我的角度要求：

 XMLHttpRequest cannot load http://localhost:3000/api/v1/dis_generics. Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'http://localhost:9000' is therefore not allowed access. The response had HTTP status code 404.

警告（＆＃34;失败消息：＆＃34; + JSON.stringify（{data：data}））; }）;

这是我的应用程序控制器：

         class DisGenericsController < ApplicationController
          before_action :set_dis_generic, only: [:show, :edit, :update, :destroy]
        skip_before_action :verify_authenticity_token
          # GET /dis_generics
          # GET /dis_generics.json
          def index
            # @dis_generics = DisGeneric.all
           respond_to do |format|
               format.html
               format.json { render json: DisGenericDatatable.new(view_context) }
             end
          end

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

          # GET /dis_generics/new
          def new
            @dis_generic = DisGeneric.new
          end

          # GET /dis_generics/1/edit
          def edit
          end

          # POST /dis_generics
          # POST /dis_generics.json
          def create
            @dis_generic = DisGeneric.new(dis_generic_params)

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

          # PATCH/PUT /dis_generics/1
          # PATCH/PUT /dis_generics/1.json
          def update
            respond_to do |format|
              if @dis_generic.update(dis_generic_params)
                format.html { redirect_to @dis_generic, notice: 'Dis generic was successfully updated.' }
                format.json { render :show, status: :ok, location: @dis_generic }
              else
                format.html { render :edit }
                format.json { render json: @dis_generic.errors, status: :unprocessable_entity }
              end
            end
          end

          # DELETE /dis_generics/1
          # DELETE /dis_generics/1.json
          def destroy
            @dis_generic.destroy
            respond_to do |format|
              format.html { redirect_to dis_generics_url, notice: 'Dis generic was successfully destroyed.' }
              format.json { head :no_content }
            end
          end

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

            # Never trust parameters from the scary internet, only allow the white list through.
            def dis_generic_params
              params.require(:dis_generic).permit(:name, :is_combination, :rxcui, :status_id, :food_id, :hepatic_id, :renal_imp_id, :release_status_id, :is_essential)
            end
        end

Answer 1

您需要在rails应用中添加访问控制标头，或者您可以根据此主题将方法更改为“JSONP”：AngularJS: No "Access-Control-Allow-Origin" header is present on the requested resource

var req = {
 method: 'JSONP',
 url: 'http://localhost:3000/api/v1/dis_generics',
 headers: {
    "Content-Type": "application/json"
 },
 data: {}
}
$http(req).success(function(data, status, header, config) {

如何解决Rails中的访问控制？

1 个答案: