Question

我有一个Angular应用程序需要能够从MongoDB集合中获取构造数据。我正在使用flConstruct中的$ resource服务从服务器请求数据。 “查询”调用返回所有数据，似乎工作正常。当我尝试使用'get'检索其中一个构造的数据时，不返回任何数据。

我已经打印到控制台以查看正在获取服务的内容，但我没有看到findOne函数可用的参数。以下是控制台的输出

Get - constructs.getConstructById
constructData.id undefined
req.params._id undefined
req.query._id undefined
No Error - Construct Data Retrieved
Get - constructs.getConstructs (Id) - No Error
Returned - construct null
Get - constructs.getConstructs (Id) - Sending Back question
Get - constructs.getConstructs (Id) - Sending Back neither error nor question

//名为的角色服务，flConstruct

angular.module('app').factory('flConstruct',function($resource){
var ConstructResource = $resource('/api/constructs/:id', {id: "@id"}, {
    get: { method: 'GET', url: '/api/constructs/byId/:id', params: {id: "@id"}},
    query: { method: 'GET' , url: '/api/constructs', isArray: true },
    create: { method: 'POST'},
    update: { method: 'PUT' },
    delete: { method: 'DELETE', params: {id: '@id'}}
});

return ConstructResource;
});

//快速配置文件named，routes.js

var constructs = require('../controllers/constructs'),

module.exports = function(app){


app.get('/api/constructs', constructs.getConstructs);
app.get('/api/constructs/byId', constructs.getConstructById);

app.post('/api/constructs', constructs.createConstruct);
app.put('/api/constructs', constructs.updateConstruct);
app.delete('/api/constructs/:id', constructs.deleteConstruct);
});
}

// Express控制器名为construct.js

var Construct = require('mongoose').model('Construct');

exports.getConstructs = function(req,res){
var constructData = req.body;
console.log("Get - constructs.getConstructs");
console.log("constructData.id " + constructData.id);
console.log("constructData " + constructData);
console.log("req.params.id " + req.params.id);
console.log("req.query.id " + req.query.id);
Construct.find({}).exec(function(err,collection){
    if (err){
        console.log("Error - No Construct Retrieved");
    }else
    {
        console.log("No Error - Construct Data Retrieved");
    }
    //console.log(collection);
    res.send(collection);
})
};

exports.getConstructById = function(req,res) {
console.log("Get - constructs.getConstructById")
var constructData = req.body;
console.log("constructData.id " + constructData.constructId);;
console.log("req.params._id " + req.params._id)
console.log("req.query._id " + req.query._id)
Construct.findOne({_id:req.params.id}).exec(function(err,construct){
if (err){
    console.log("Error - No Construct Retrieved");
    console.log("Get - constructs.getConstructs (Id) - Error");
    res.send(null);
}else
{
    console.log("No Error - Construct Data Retrieved");
    console.log("Get - constructs.getConstructs (Id) - No Error");
    //console.log("Returned - construct._id " + construct._id)
    //console.log("Returned - construct.id " + construct.id)
    console.log("Returned - construct " + construct)
    console.log("Get - constructs.getConstructs (Id) - Sending Back question");
    res.send(construct);
}
console.log("Get - constructs.getConstructs (Id) - Sending Back neither error nor     question");
})

};

Answer 1

我发现了自己的错误。它都在Angular代码中。在flCachedConstruct.js中对get进行的调用没有正确定义要传递的参数。我需要包含参数名称“id”以及参数值constructID。此函数调用中的“id”与我在flConstruct.js中调用的参数相匹配。

flConstruct.get({id: constructId }, function(data) {

Angular $资源未将参数传递给Express service

1 个答案: