golang Chi router with query params not working - rest

I am working on a restful service in golang using chi. I am trying to create a route as below
r.Mount("/api/dest", router.NewDestRouter(chi.NewRouter(), destSrv).InitRoutes())
func (dr *DestRouter) InitRoutes() http.Handler {
dr.router.Post("/{number}/product?version={v}", handlers.HandleProduct(dr.dest))
return dr.router
}
But I try to hit this endpoint via post man I get a 404 not found
http://localhost:8345/api/dest/1235abc/product?version=1
May I know the issue here?

As #mkopriva mentioned, simply use r.URL.Query().Get("version") to get the query parameter.

Met this issue, found status 404, for your situation, only go with /{number}/product, do not need to add the content ?version={v}, chi only match with the path, and then use r.URL.Query().Get("version") to get the query parameters, it will work.

Related

go-restful extract URL pattern path from request

I am using a the emicklei/go-restful framework to deal with rest API.
I wish to access the route path from the request. Meaning that when I configure a dummy route like this:
ws := new(restful.WebService)
ws.Path("/resources/names")
ws.Route(ws.GET("/{name}").To(getName))
restful.DefaultContainer.Add(ws)
I wish to access the information that the route was "/resources/names/{name}"
I can access the actual URL which is call by calling:
req.Request.URL.Path
But this will return the specific URL, not the generic one.
Any suggestion?
After more research I finally found that the method req.SelectedRoutePath() will return expected value.

Why does one HTTP GET request retrieve the required data and another retrieve []

I'm currently working on ng-admin.
I'm having a problem retrieving user data from my REST API (connected to a MongoDB) and displaying it.
I have identified the problem as the following:
When I enter http://localhost:3000/users into my browser, I get a list of all users in my database.
When I enter http://localhost:3000/users?_page=1&_perPage=30&_sortDir=DESC&_sortField=id,
I get [] as a result.
I am quite new to this, I used both my browser and the POSTMAN Chrome extension to test this and get the same result.
http://localhost:3000/users_end=30&_order=DESC&_sort=id&_start=0
This (/users_end) is a different request than /users.
It should be:
http://localhost:3000/users?end=30&_order=DESC&_sort=id&_start=0
Or, by looking at the other parameters:
http://localhost:3000/users?_end=30&_order=DESC&_sort=id&_start=0
with end or _end being the first parameter (mark the ?).
Update (it is ? and before the _, I have edited.):
If adding parameters to the request returns an empty list, try adding only one at a time to narrow down the problem (there's probably an error in the usage of those parameters - are you sure you need those underscores?).
Your REST API must have a way to handle pagination, sorting, and filtering. But ng-admin cannot determine exactly how, because REST is a style and not a standard. So ng-admin makes assumptions about how your API does that by default, that's why it adds these _end and _sort query parameters.
In order to transform these parameters into those that your API understands, you'll have to add an interceptor. This is all thoroughly explained in the ng-admin documentation: http://ng-admin-book.marmelab.com/doc/API-mapping.html

Restheart: mongodb thgourh http get returns 404

I have managed to access a static url but when it comes to accessing an existing collection in mongodb (2.6) through a browser (e.g., http://0.0.0.0:8080/test/test) it returns a 404. Anybody knows if I have to add anything to the default configuration.yml to activate mongo access?
Thanks for help!!
First make sure it is RESTHeart responding you request:
if it is running on your pc, try 127.0.0.1:8080/test/test (not 0.0.0.0)
Also note that in case of 404, you should get a hal+json document with a "message" property (with somenthing like "the db test does bot exist").
If it is restheart, then either the db "test" or the collection "test/test" does not exist an you have to create them first.
If restheart coudn't connect with mongodb you would get "400 Internal Server Error" response code.
Finally I managed to find what the problem was by myself. I post the answer in case it's helpful for somebody else. Thanks Andrea for the help in any case :)
In the static-resources-mounts I had "where: /", which seemed to collide with the mongo-mounts default own "where: /". By changing either where value the access to mongodb retrieves a correct hal+json.

403 forbidden error PUT request with yiirestfull plugin and Backbone.JS

I am working with REST in Yii. Therefore I use yiirestful plugin and Backbone.JS. At the moment I am perfectly able to do POST and GET request throughout REST. But when I want to update a record I alway get an 403 forbidden error. I shall explain what i've tried and how:
First of all I am saving my collection in Backbone like this:
Backbone.sync('update', this.collection);
Now I don't for sure if that's going to work but the fact is that any PUT request get's an 403.
Secondly, because I am working in a module I adjusted the URLmanager rules like this:
'contentManagement/api/<controller:\w+>'=>array('contentManagement/<controller>/restList', 'verb'=>'GET'),
'api/<controller:\w+>'=>array('<controller>/restList', 'verb'=>'GET'),
'api/<controller:\w+>/<id:\w+>'=>array('<controller>/restView', 'verb'=>'GET'),
'api/<controller:\w+>/<id:\w+>/<var:\w+>'=>array('<controller>/restView', 'verb'=>'GET'),
array('contentManagement/<controller>/restCreate', 'pattern'=>'contentManagement/api/<controller:\w+>', 'verb'=>'POST'),
array('<controller>/restUpdate', 'pattern'=>'contentManagement/api/<controller:\w+>/<id:\d+>', 'verb'=>'PUT'),
array('<controller>/restUpdate', 'pattern'=>'contentManagement/api/<controller:\w+>/<id:\d+>', 'verb'=>'PUT'),
array('<controller>/restDelete', 'pattern'=>'api/<controller:\w+>/<id:\d+>', 'verb'=>'DELETE'),
array('<controller>/restCreate', 'pattern'=>'contentManagement/api/<controller:\w+>', 'verb'=>'POST'),
array('<controller>/restCreate', 'pattern'=>'contentManagement/api/<controller:\w+>/<id:\w+>', 'verb'=>'POST'),
It could be the case that this causes the problem. But I am not very digged in to this rules.. I did the same as i did by the POST request but whatever I try it still gives the 403.
Thirdly i'll provide my request information:
PUT http://pimtest.php/Yii/trackstar/contentManagement/api/SidebarWidgetsUsed/
403 Forbidden
38ms
I think a id is needed after this url but when I provide an id in the data that should be enough to let backbone recognize it's about an PUT request / update request.
I have no clue where to look further in my code.. I understand it's a complicated story so any minimal advice is appreciated!
Greetz,
You have two (identical) rules that apply to PUT, and as you say, they require an ID. Without an ID, none of the rules will match for a PUT request.
Either provide an ID, or modify the rule to not require an id, e.g.:
array('<controller>/restUpdate', 'pattern'=>'contentManagement/api/<controller:\w+>', 'verb'=>'PUT'),
In any case, as you're not using id, I'm not sure why it's in the rule to start?

http delete with REST

I am currently using Jersey Framework (JAX-RS implementation) for building RESTful Web Services. The Resource classes in the project have implemented the standard HTTP operations - GET,POST & DELETE. I am trying to figure out how to send request parameters from client to these methods.
For GET it would be in the query string(extract using #QueryParam) and POST would be name/value pair list (extract using #FormParam) sent in with the request body. I tested them using HTTPClient and worked fine. For DELETE operation, I am not finding any conclusive answers on the parameter type/format. Does DELETE operation receive parameters in the query string(extract using #QueryParam) or in the body(extract using #FormParam)?
In most DELETE examples on the web, I observe the use of #PathParam annotation for parameter extraction(this would be from the query string again).
Is this the correct way of passing parameters to the DELETE method? I just want to be careful here so that I am not violating any REST principles.
Yes, its up to you, but as I get REST ideology, DELETE URL should delete something that is returned by a GET URL request. For example, if
GET http://server/app/item/45678
returns item with id 45678,
DELETE http://server/app/item/45678
should delete it.
Thus, I think it is better to use PathParam than QueryParam, when QueryParam can be used to control some aspects of work.
DELETE http://server/app/item/45678?wipeData=true
The DELETE method should use the URL to identify the resource to delete. This means you can use either path parameters or query parameters.
Beyond that, there is no right and wrong way to construct an URL as far as REST is concerned.
You can use like this
URL is http://yourapp/person/personid
#DELETE
#Path("/person/{id}")
#Produces(MediaType.APPLICATION_JSON)
public Response deletePerson(#PathParam("id") String id){
Result result = new Result();
try{
persenService.deletePerson(id);
result.setResponce("success");
}
catch (Exception e){
result.setResponce("fail");
e.printStackTrace();
}
return Response.status(200).entity(result).build();
}
#QueryParam would be the correct way. #PathParam is only for things before any url parameters (stuff after the '?'). And #FormParam is only for submitted web forms that have the form content type.