How do I get only the query string in a Rails route?

问题

I am using a route like this

match "/v1/:method" => "v1#index"

My intention here is capture the name of the api method and then send the request to that method inside the controller.

def index
    self.send params[:method], params
end

I figured this would send the other parameters as an argument to the method, but it didn't work. So my question is how can I pass the non-method parameters in a query string?

回答1:

#query_parameters does exactly what you want:

request.query_parameters

It's also the most efficient solution since it doesn't construct a new hash, like the other ones do.

回答2:

Stolen from the work of a colleague. I find this a slightly more robust solution, since it will work even if there are changes to the path parameters:

params.except(*request.path_parameters.keys)

回答3:

I sort of solved this problem by doing this:

params.except("method","action","controller")

来源：https://stackoverflow.com/questions/4116545/how-do-i-get-only-the-query-string-in-a-rails-route