Alamofire: Get request and array params

Created on 3 Feb 2015 · 3Comments · Source: Alamofire/Alamofire

It doesn't seem like GET requests are translating array params correctly.

    let params: [String: AnyObject] = ["q": ["one", "two"], "target": "en"]
    Alamofire.request(.GET, "https://www.googleapis.com/language/translate/v2", parameters: params)

generates the url:

q%5B%5D=one&q%5B%5D=two&target=en

I think it's trying to added []'s for the POST case. But in the GET case it should be q=one&q=two

Source

solomon23

All 3 comments

This is intended behavior. Per the README.md,

Since there is no published specification for how to encode collection types, the convention of appending [] to the key for array values (foo[]=1&foo[]=2), and appending the key surrounded by square brackets for nested dictionary values (foo[bar]=baz) [is used].

Instead of using GET, you should consider using POST or PUT and passing values via JSON, XML, or another well-defined format. This could require server side changes obviously.

If server side is out of your control, you should consider manually encoding these parameters instead.

JRG-Developer on 3 Feb 2015

😕3

Yea it's the google api endpoint, so it's out of my control. The google API doesn't like that format. I can construct it manually, thought I'd file it though so you guys are aware.

solomon23 on 3 Feb 2015

@JRG-Developer is correct—this is intended behavior. Use custom parameter encoding if you need anything other than the provided options.