How do I add a custom method to a Ruby library? -

i'm using restforce library salesforce queries. queries, following:

client = restforce.new :username => 'user', :password => 'pass', :security_token => 'token', :client_id => 'client_id', :client_secret => 'client_secret' 

and call client.query query salesforce.

i want create custom method called query_with_alises can call client.query_with_aliases custom functionality.

how without editing source code of library itself?

you can open class again , add method want.

though exact meaning matter of debate, called monkey-patching. consider monkey-patching overriding/redefining existing methods (which can kinda dangerous), other consider kind of opening existing classes , adding anything, if new methods.

in specific case, can monkey-patch client class restforce that:

class restforce::data::client   def query_with_aliases      # put code here    end     end 

every other method inside client keep existing , functioning , add query_with_aliases.