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Rails: How to get URL params without routing parameters (or vice versa)

Arne Hartherz
March 01, 2019Software engineer at makandra GmbH

Rails' params hash contains any request parameters (URL parameters or request payload) as well as routing parameters like :controller, :action, or :id.

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To access only URL parameters, use request.query_parameters. Routing params are available through request.path_parameters.

# On /users?query=Bob&page=2

>> request.params
=> {"page"=>"2", "query"=>"Bob", "controller"=>"users", "action"=>"index"}

>> request.query_parameters
=> {"page"=>"2", "query"=>"Bob"}

>> request.path_parameters
=> {:controller=>"users", :action=>"index"}

Note that path_parameters is a Hash with Symbol keys, not a HashWithIndifferentAccess like the other.

Posted by Arne Hartherz to makandra dev (2019-03-01 14:30)