如何创建新文档更新现有文档

本文介绍了如何创建新文档更新现有文档的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

我正在开发一个民意测验应用程序，用户可以在其中投票给定民意测验中的选项.每个民意调查都有2个或更多选项作为子文档.每个选项的投票都属于另一个集合中的文档(用于身份验证和唯一投票).

I'm developing a polls application, in which a user can vote for an option in a given poll. each poll has 2 or more options as subdocument. each of these options have votes that are documents in another collection (for authentication and unique voting purposes).

我可以使用民意调查CRUD(可以毫无问题地创建，读取，更新和删除)，但是当我尝试创建投票功能(即更新民意调查文档poll_option子文档+创建新的投票文档)时，我的问题就开始了

I have the polls CRUD working (I can create, read, update and delete without a problem), but my problem begins when im trying to create a vote function, i.e update a poll documents poll_option subdocument + creating a new vote document.

poll.server.model.js

poll.server.model.js

'use strict'; /** * Module dependencies. */ var mongoose = require('mongoose'), Schema = mongoose.Schema; /** * Poll Schema */ var PollSchema = new Schema({ poll_id: {type:Number}, user: { type: Schema.ObjectId, ref: 'User' }, poll_question: {type:String}, poll_language: [{ type:Schema.ObjectId, ref: 'Language' }], poll_category: [{ type: Schema.ObjectId, ref: 'Category' }], poll_description: {type:String}, poll_description_raw: {type:String}, poll_weight_additional: {type:Number}, poll_flag_active:{type:Number,default:1}, poll_flag_18plus:{type:Number,default:0}, poll_flag_expire:{type:Number,default:0}, poll_flag_deleted:{type:Number,default:0}, poll_flag_moderated:{type:Number,default:0}, poll_flag_favourised:{type:Number,default:0}, poll_date_expiration:{type:Date}, poll_date_inserted:{type:Date,default:Date.now}, poll_flag_updated:{type:Date}, show_thumbs:{type:Boolean}, comments: [{ type: Schema.ObjectId, ref: 'Comment' }], poll_options: [{ option_text:{type:String}, option_thumb:{type:Number,default:0}, votes:[{ type: Schema.ObjectId, ref: 'Vote' }] }] }); mongoose.model('Poll', PollSchema);

但是从头开始，这是前端控制器中的表决功能

but ill start from the front, this is the vote function in the frontside controller

// Vote $scope.vote = function(){ $scope.votes = Votes.query(); var vote = new Votes({ _id:pollId, option_id:optionId }); vote.$save(function(response){ // ... // }, function(errorResponse) { $scope.error = errorResponse.data.message; }); };

这是投票工厂:

angular.module('polls').factory('Votes', [ '$resource', function($resource) { return $resource('polls/:pollId/votes/:optionId', { pollId: '@_id', optionId: '@option_id' }, { update: { method: 'PUT' } }); } ]);

到目前为止，一切都运行良好，即当我运行$ scope.vote();时.功能，我在浏览器控制台中得到以下响应:

up to this point everything runs well, i.e when i run the $scope.vote(); function i get this response in the browser console:

POST localhost:3000/polls/548c6da001ec1f4ba2860c38/votes/548c6da001ec1f4ba2860c3a 404 (Not Found)

据此我收集到对该URL的调用，控制器+服务(角度)正常工作.

from this i gather that the call to that url is made, controller + service (angular) working.

按照meanjs文章示例，我了解我需要将optionId参数映射到实际选项

following the meanjs article example, i understand that i need to map the optionId param to an actual option

poll.server.route.js

poll.server.route.js

'use strict'; /** * Module dependencies. */ var users = require('../../app/controllers/users.server.controller'), polls = require('../../app/controllers/polls.server.controller'); module.exports = function(app) { // Poll Routes app.route('/polls') .get(polls.list) .post(polls.create); app.route('/polls/:pollId') .get(polls.read) .put(polls.update) .delete(polls.delete); app.route('/polls/:pollId/votes/:optionId') .put(polls.vote); app.param('pollId', polls.pollByID); app.param('optionId', polls.pollOptionByID); };

但是无论我做什么，我都会继续获取404！这是polls.server.controller.js中的polls.pollOptionByID函数

but no matter what i do, i keep on getting the 404! here is the polls.pollOptionByID function in the polls.server.controller.js

exports.pollOptionByID = function(req, res, next, id) { Poll.findOne({'poll_options._id':id}).exec(function(err,poll_option){ console.log('hi'); if (err) return next(err); if (!poll) return next(new Error('Failed to load poll option ' + id)); req.poll_option = poll_option; next(); }); }

但是我什至没有到达那儿.我在控制台日志中看不到那个嗨.是的，当然，我尝试了没有console.log的情况，但是没有任何效果，我一直只收到404.我在做什么错?如何实现我的目标，即创建一个新的投票文档+将其映射到给定投票文档中的poll_option子文档?

but I don't even get there. I don't see that hi in the console log. and yes, of course I tried without the console.log but nothing works, I keep getting only 404. What am I doing wrong? How can I achieve my goals i.e creating a new vote document + mapping it to a poll_option subdocument in a given poll document?

推荐答案

如此，还有惠灵顿·赵( www.facebook/AlphanumericSoup?fref=ufi )在meanjs fb小组( www.facebook/groups/meanjs/463004417186215/?comment_id=463027443850579&notif_t=group_comment )指出:

so, as wellington zhao (www.facebook/AlphanumericSoup?fref=ufi) at the meanjs fb group (www.facebook/groups/meanjs/463004417186215/?comment_id=463027443850579&notif_t=group_comment) pointed out:

您似乎要尝试发布到路线 (/polls/:pollId/votes/:optionsId)仅定义了PUT.更改 到另一个，然后查看404是否仍然存在.

It looks like you're trying to POST to a route (/polls/:pollId/votes/:optionsId) that only has PUT defined. Change it to one or the other and see if 404 persists.

所以我将路线定义更改为post和viola，它起作用了！希望我能帮助其他菜鸟避免数小时的诅咒和大喊大叫的原因.

so i changed the route definition to post and viola, it worked! hoped i help other noobs to avoid hours of cursing and shouting why.