我正在尝试使用我的服务插入每个捕获的详细信息页面。
虽然当我尝试在我的服务中加载带有id的页面时（例如：/capture/5740c1eae324ae1f19b7fc30），我使用以下代码进行了未定义：
app.factory('captureApi', ['$http', function($http){
var urlBase = 'URL';
// ==> Gives back an array as such:
//[
//{
// "_id": "5740c1e3e324ae1f19b7fc2f",
// "created_at": "2016-05-21T20:15:38.554Z",
// "userId": "118000609287736585411",
// "place": "place",
// "birdname": "birdname",
// "__v": 0
//},
//{
// "_id": "5740c1eae324ae1f19b7fc30",
// "created_at": "2016-05-21T20:15:38.554Z",
// "userId": "118000609287736585411",
// "place": "place",
// "birdname": "birdname",
// "__v": 0
//},
//{
// ...
//}
//]
return {
getAllCaptures : function () {
return $http.get(urlBase);
},
insertCapture : function(data) {
return $http.post(urlBase, data);
},
findCapture : function(id) {
//both give undefined
console.log(_.find(urlBase, function(capture){return capture._id == id}));
console.log(_.find(urlBase, function(capture){return capture.id == id}));
return _.find(urlBase, function(capture){return capture.id == id});
}
}
}]);
在服务器端，我使用的是mongoose / mongodb：
-route：
var Capture = require('../models/capture');
module.exports = function(router) {
router.post('/captures', function(req, res){
var capture = new Capture();
capture.birdname = req.body.birdname;
capture.place = req.body.place;
capture.userId = req.body.userId;
capture.author = req.body.author;
capture.picture = req.body.picture;
capture.created_at = new Date();
capture.save(function(err, data){
if(err)
throw err;
console.log(req.body);
res.json(data);
});
});
router.get('/captures', function(req, res){
Capture.find({}, function(err, data){
res.json(data);
});
});
router.delete('/captures', function(req, res){
Capture.remove({}, function(err){
res.json({result: err ? 'error' : 'ok'});
});
});
router.get('/captures/:id', function(req, res){
Capture.findOne({_id: req.params.id}, function(err, data){
res.json(data);
});
});
router.delete('/captures/:id', function(req, res){
Capture.remove({_id: req.params.id}, function(err){
res.json({result: err ? 'error' : 'ok'});
});
});
// router.post('/captures/:id', function(req, res){
// Capture.findOne({_id: req.params.id}, function(err, data){
// var capture = data;
// capture.birdname = req.body.birdname;
// capture.place.city = req.body.place.city;
// capture.place.country = req.body.place.country;
// capture.save(function(err, data){
// if(err)
// throw err;
// res.json(data);
// });
// })
// })
}
- 模型：
var mongoose = require('mongoose');
var Schema = mongoose.Schema;
var captureSchema = mongoose.Schema({
birdname: {type: String, required: true},
place: {type: String, required: true},
userId: {type: String, required: true},
author: {type: String, required: true},
picture: Schema.Types.Mixed,
created_at: Date
});
module.exports = mongoose.model('Capture', captureSchema)
这是我的server.js（额外信息）：
// Init Express Web Framework
var express = require('express');
var app = express();
var path = require('path');
// Set view engine to EJS & set views directory
app.set('view engine', 'ejs');
app.set('views', path.resolve(__dirname, 'client', 'views'));
app.use(express.static(path.resolve(__dirname, 'client')));
// Database Connection
var mongoose = require('mongoose');
var configDB = require('./server/config/database.js');
mongoose.connect(configDB.url);
var bodyParser = require('body-parser');
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({extended: true}));
app.use(bodyParser.text());
app.use(bodyParser.json({ type: 'application/json'}));
// Main route
app.get('/', function(req, res){
res.render('index.ejs');
});
// // catch 404 and forwarding to error handler
// app.use(function(req, res, next) {
// var err = new Error('Not Found');
// err.status = 404;
// next(err);
// });
// API
var api = express.Router();
require('./server/routes/capture')(api);
app.use('/api', api);
// Set routes to other pages
app.get('/*', function(req, res){
res.render('index.ejs');
});
// Port Settings
app.listen(process.env.PORT || 3000, process.env.IP);
console.log('Listening on port ' + process.env.PORT);
在客户端，我有以下触发页面：
$stateProvider
.state('home', {
url: '/',
templateUrl: 'partials/home.html',
controller: 'homeCtrl',
data: {
requiresLogin: false
},
resolve: {
$title: function() { return 'Home'; }
}
})
.state('dash', {
url: '/dashboard',
templateUrl: 'partials/dashboard.html',
controller: 'dashCtrl',
data: {
requiresLogin: true
},
resolve: {
$title: function() { return 'Dashboard'; }
}
})
.state('capture', {
url: '/capture',
templateUrl: 'partials/capture.html',
controller: 'captureCtrl',
data: {
requiresLogin: true
},
resolve: {
$title: function() { return 'Capture'; }
}
})
.state('viewCapture', {
url: '/capture/:id',
templateUrl: 'partials/viewCapture.html',
controller: 'viewCaptureCtrl',
data: {
requiresLogin: true
},
resolve: {
$title: function() { return 'Capture Detail'; }
}
})
viewCaptureCtrl.js：
app.controller('viewCaptureCtrl', ['$scope', 'captureApi', '$stateParams', '$http', function($scope, captureApi, $stateParams, $http) {
var id = $stateParams.id;
$scope.viewCapture = function() {
captureApi.findCapture(id)
.then(function(data) {
$scope.capture = data;
});
};
$scope.viewCapture();
}]);
任何人都知道为什么我的find函数给出了一个未定义的？ 非常感谢帮助！感谢
答案 0 :(得分：1)
您需要引用underscoreJS并将其注入您的服务中。文件：http://app-genesis.com/underscorejswithangularjs/
var app = angular.module("app", []);
app.factory('_', function() { return window._; });
//inject into capture api factory
app.factory('captureApi', ['$http', '_', function($http, _){
//do stuff with _
}]);
编辑但我不熟悉_.find();如果它返回一个承诺。如果没有，您需要使用$q创建承诺并将其返回以使用then()。
//inject into capture api factory
app.factory('captureApi', ['$http', '_', '$q',
function($http, _, $q) {
return {
findCapture: function(id) {
var deferred = $q.defer();
try {
var results = _.find(); //do stuff with _
deferred.resolve(results);
} catch (err) {
deferred.reject(err);
}
//you need to return a promise in order to use then()
return deferred.promise;
}
}
}
]);