OptionalParameters.md

Optional request parameters

Suppose you want to call api/users?limit=10 but also api/users:

public enum MyService {
	case Users(limit: Int?)
}

extension MyService: TargetType {
//...
	public var parameters: [String: AnyObject]? {
	        switch self {
	        case .Users(let limit):
	            var params: [String : AnyObject] = [:]
				params["limit"] = limit
	            return params
	        default:
	            return nil
	        }
	    }
//...
}

In this case params["limit"] = nil will be equal of removing object for key limit.

This will work for any type of requests, since method type is defined in separate property

extension MyService: TargetType {
//...
    public var method: Moya.Method {
        switch self {
        case .EmailAuth:
            return .POST
        default:
            return .GET
        }
    }
//...
}