Ruby Grape::Request convert to string and store in database - ruby

Question

How would you convert the Grape::Request object to a string in order to store it's contents in the database? I tried
request.to_s and only get #<Grape::Request:0x007f7fd34605c8>
I also tried
request.to_json and get this IOError Exception: not opened for reading

Answer 1

Perhaps the Grape::Endpoint#request method is what you're looking for, although there are others like env that may have more or less of what you need.
I tried it by putting it in the Alongside Sinatra (or other frameworks) example given in the docs:
require 'grape'
require 'sinatra/base'
class API < Grape::API
get :hello do
{req: request}
end
end
class Web < Sinatra::Base
get '/' do
"Hello world."
end
end
run Rack::Cascade.new [API, Web]
and on calling it:
$ [2015-07-22 08:21:17] INFO WEBrick 1.3.1
[2015-07-22 08:21:17] INFO ruby 2.2.2 (2015-04-13) [x86_64-darwin13]
[2015-07-22 08:21:17] INFO WEBrick::HTTPServer#start: pid=30420 port=9292
curl http://localhost:9292/hello
127.0.0.1 - - [22/Jul/2015:08:21:19 +0100] "GET /hello HTTP/1.1" 200 3665 0.0389
{:req=>#<Grape::Request:0x007f9971425d08 #env={"GATEWAY_INTERFACE"=>"CGI/1.1", "PATH_INFO"=>"/hello", "QUERY_STRING"=>"", "REMOTE_ADDR"=>"127.0.0.1", "REMOTE_HOST"=>"localhost", "REQUEST_METHOD"=>"GET", "REQUEST_URI"=>"http://localhost:9292/hello", "SCRIPT_NAME"=>"", "SERVER_NAME"=>"localhost", "SERVER_PORT"=>"9292", "SERVER_PROTOCOL"=>"HTTP/1.1", "SERVER_SOFTWARE"=>"WEBrick/1.3.1 (Ruby/2.2.2/2015-04-13)", "HTTP_USER_AGENT"=>"curl/7.30.0", "HTTP_HOST"=>"localhost:9292", "HTTP_ACCEPT"=>"*/*", "rack.version"=>[1, 3], "rack.input"=>#<Rack::Lint::InputWrapper:0x007f99711d6458 #input=#<StringIO:0x007f99711e52f0>>, "rack.errors"=>#<Rack::Lint::ErrorWrapper:0x007f99711d6430 #error=#<IO:<STDERR>>>, "rack.multithread"=>true, "rack.multiprocess"=>false, "rack.run_once"=>false, "rack.url_scheme"=>"http", "rack.hijack?"=>true, "rack.hijack"=>#<Proc:0x007f99711dc3d0#/Users/iainb/Projects/Test/31551252/vendor.noindex/ruby/2.2.0/gems/rack-1.6.4/lib/rack/lint.rb:525>, "rack.hijack_io"=>nil, "HTTP_VERSION"=>"HTTP/1.1", "REQUEST_PATH"=>"/hello", "sinatra.commonlogger"=>true, "rack.tempfiles"=>[], "rack.routing_args"=>{:route_info=>#<Grape::Route:0x007f997106fcb8 #options={:params=>{}, :prefix=>nil, :version=>nil, :namespace=>"/", :method=>"GET", :path=>"/hello(.:format)", :compiled=>/\A\/hello(?:\.(?<format>[^\/.?]+))?\Z/, :settings=>{}}>}, "api.endpoint"=>#<Grape::Endpoint:0x007f9971497750 #inheritable_setting=#<Grape::Util::InheritableSetting:0x007f9971157040 #route={:saved_declared_params=>[], :saved_validations=>[]}, #api_class={}, #namespace=#<Grape::Util::InheritableValues:0x007f9971156820 #inherited_values={}, #new_values={}>, #namespace_inheritable=#<Grape::Util::InheritableValues:0x007f9971156780 #inherited_values=#<Grape::Util::InheritableValues:0x007f99711c5860 #inherited_values={}, #new_values={}>, #new_values={:default_error_status=>500}>, #namespace_stackable=#<Grape::Util::StackableValues:0x007f9971156618 #inherited_values=#<Grape::Util::StackableValues:0x007f99711c57c0 #inherited_values={}, #new_values={}, #froozen_values={}>, #new_values={}, #froozen_values={}>, #point_in_time_copies=[], #parent=#<Grape::Util::InheritableSetting:0x007f99711c5950 #route={}, #api_class={}, #namespace=#<Grape::Util::InheritableValues:0x007f99711c58d8 #inherited_values={}, #new_values={}>, #namespace_inheritable=#<Grape::Util::InheritableValues:0x007f99711c5860 #inherited_values={}, #new_values={}>, #namespace_stackable=#<Grape::Util::StackableValues:0x007f99711c57c0 #inherited_values={}, #new_values={}, #froozen_values={}>, #point_in_time_copies=[], #parent=nil>>, #options={:method=>["GET"], :path=>[:hello], :for=>API, :route_options=>{:params=>{}}}, #source=#<Proc:0x007f99711c5450#/Users/iainb/Projects/Test/31551252/config.ru:5>, #block=#<Proc:0x007f9971143cc0#/Users/iainb/Projects/Test/31551252/vendor.noindex/ruby/2.2.0/gems/grape-0.12.0/lib/grape/endpoint.rb:47>, #namespace="/", #routes=[#<Grape::Route:0x007f997106fcb8 #options={:params=>{}, :prefix=>nil, :version=>nil, :namespace=>"/", :method=>"GET", :path=>"/hello(.:format)", :compiled=>/\A\/hello(?:\.(?<format>[^\/.?]+))?\Z/, :settings=>{}}>], #env={...}, #header={}, #request=#<Grape::Request:0x007f9971425d08 ...>, #params=#<Hashie::Mash>, #headers={"User-Agent"=>"curl/7.30.0", "Host"=>"localhost:9292", "Accept"=>"*/*", "Version"=>"HTTP/1.1"}, #cookies=#<Grape::Cookies:0x007f99713be090 #cookies={}, #send_cookies={}>>, "api.format"=>:txt, "rack.request.query_string"=>"", "rack.request.query_hash"=>{}, "rack.request.cookie_hash"=>{}}, #params=#<Hashie::Mash>, #headers={"User-Agent"=>"curl/7.30.0", "Host"=>"localhost:9292", "Accept"=>"*/*", "Version"=>"HTTP/1.1"}>}%