I can't receive list of items that matches with my array of ids.
This is PART of code in Angular component:
this.orderService.getSpecyficOrders(ids)
.subscribe(orders => { ...
Where ids is an array of
[{_id : ID },{_id : ID },{_id : ID },]
ID is "5235sd23424asd234223sf44" kind of string form MongoDB documents.
In angular service file I have imported: Http, Headers, and import 'rxjs/add/operator/map';
Here is code in service in Angular:
getSpecyficOrders(ids){
return this.http.get('/api/ordersspecyfic', ids)
.map(res => res.json());
}
In express file I have require: multer, express,router,mongojs, db
And here is part of code in express, call to mongodb:
router.get('/ordersspecyfic', function(req, res, next){
var ids = req.body;
ids = ids.map(function (obj){ return mongojs.ObjectId(obj._id)});
db.orders.find({_id: {$in: ids}}, function(err, orders){
if(err){
res.send(err);
}
res.json(orders);
});
});
And I'm getting error:
Uncaught Response {_body: "TypeError: ids.map is not a function
&n…/node_modules/express/lib/router/index.js:46:12)↵", status: 500, ok: false, statusText: "Internal Server Error", headers: Headers…}
Console.log in express file is showing me that req.body is an empty object {}
As far as I know req.body is not an array, but I don't know if this is only problem with that code.
All others request of get single element, get all items etc. are working fine. I just can't get this one working..
I assume you are trying to send ids to your server side with
return this.http.get('/api/ordersspecyfic', ids)
but http.get api doesn't work like that
get(url: string, options?: RequestOptionsArgs) : Observable
In order to send this data to your back-end you should use the post api
let headers = new Headers({ 'Content-Type': 'application/json' });
let options = new RequestOptions({ headers: headers });
return this.http.post('/api/ordersspecyfic', ids, options)
post(url: string, body: any, options?: RequestOptionsArgs) : Observable
Source:https://angular.io/docs/ts/latest/api/http/index/Http-class.html
Two errors, backend and frontend.
You say this.http.get('/api/ordersspecific', ids);. This does nothing - or specifically, this only tries to get /api/ordersspecific. It doesn't send ids, your second parameter doesn't match any RequestOptions. In other words, your ids are ignored.
You'd want to append this as a query string. Check here how to add querystring parameters. But in short, it'd be something simple like:
return this.http.get('/api/ordersspecyfic?ids=<id1>&ids=<id2>...'
You're reading stuff from body. It's a GET request, there should be no body. Read this from querystring:
router.get('/ordersspecyfic', function(req, res, next){
var ids = req.query.ids;
});