Question

我是nodejs和angularjs的新手，希望我能在这里得到一些帮助。我正在尝试创建一个小型的学习应用程序。我正在使用angularjs，Mongodb和nodejs。我如何根据特定的想法id查询问题，使用以下给定的参数传递？我有以下内容：我创建了问题服务和创意服务：

app.factory('Problem', 
          ['$rootScope', '$resource',
  function ($rootScope,   $resource) {

    return $resource($rootScope.apiBaseURL + '/problems/:id', {id:'@id'}, {
        update: {
            method: 'PUT'
        }
    });
}]);

我也有问题控制器：

app.controller('ProblemController', [
           '$rootScope','$scope', 'Problem',
  function ($rootScope,$scope, Problem) {
    //$scope.htmlVariable = 'Explain why you selected this problem… What is the need that you are trying to fulfill?(Please make sure to limit your answer to 140 Words)';
     $scope.problem = Problem.query();
  }]

后端：

use strict';

// modules dependencies
var mongoose = require('mongoose'),
    Problem     = mongoose.model('Problem');

/**
 * create problem
 */
exports.create = function (req, res) {
  var newProblem = new Problem(req.body);

  newProblem.save(function(err) {
    if (err) return res.status(400).send(err)

    res.json(newProblem);
  });
};

/**
 * update problem
 */
exports.update = function (req, res) {
  //TODO check token
};


/**
 *  get problem by id
 */
exports.getById = function (req, res) {

  Problem.findById(req.params.id, function (err, problem) {
    if (err) return res.status(400).send(err)

    if (problem) {
      res.send(problem);
    } else {
      res.status(404).send('Problem not found')
    }
  });
};

/**
 *  get all problems
 */
exports.getAll = function (req, res) {

  Problem.find(function (err, problems) {
    if (err) return res.status(400).send(err)

    res.send(problems);
  });
};
    );

问题架构：

'use strict';

// modules dependencies
var mongoose = require('mongoose'),
    Schema   = mongoose.Schema;

// model
var ProblemSchema = new Schema({

  description: {
    type     : String,
    unique   : false,
    required : false
  },
  creator: {
    type     : Schema.Types.ObjectId,
    unique   : false,
    required : true,
    ref      : 'User'
  },
  idea: {
    type     : Schema.Types.ObjectId,
    unique   : false,
    required : true,
    ref      : 'Idea'
  }
});

mongoose.model('Problem', ProblemSchema);

路线：

// problem routes
  var problemController = require('../controllers/problemController');
  router.post   ('/problems',     authController.isBearerAuthenticated, problemController.create );
  router.put    ('/problems/:id', authController.isBearerAuthenticated, problemController.update );
  router.get    ('/problems/:id', authController.isBearerAuthenticated, problemController.getById);
  router.get    ('/problems',     authController.isBearerAuthenticated, problemController.getAll );

Answer 1

您正在尝试异步调用一段时间后哪些数据可用。您需要在$resource承诺中获取其数据，如下所示

Problem.query({id: 2}).$promise
.then(function(data){ 
    $scope.problem = data; 
});

如何使用angularjs，nodejs和mongodb查询特定数据？

1 个答案: