Passing parameters in rails redirect_to

How do we pass parameters in redirect_to in rails? I know we can pass id using this:

redirect_to :action => action_name,:id => 3

If I want to pass additional parameters like some form data how to achieve it?

EDIT:

For Ruby 2 syntax you have to update the snippet above to:

redirect_to action: action_name, id: 3

Just append them to the options:

redirect_to controller: 'thing', action: 'edit', id: 3, something: 'else'

Would yield /thing/3/edit?something=else

If you are using RESTful resources you can do the following:

redirect_to action_name_resource_path(resource_object, param_1: 'value_1', param_2: 'value_2')

or
#You can also use the object_id instead of the object
redirect_to action_name_resource_path(resource_object_id, param_1: 'value_1', param_2: 'value_2')

or
#if its a collection action like index, you can omit the id as follows
redirect_to action_name_resource_path(param_1: 'value_1', param_2: 'value_2')

#An example with nested resource is as follows:
redirect_to edit_user_project_path(@user, @project, param_1: 'value_1', param_2: 'value_2')

If you have some form data for example sent to home#action, now you want to redirect them to house#act while keeping the parameters, you can do this

redirect_to act_house_path(request.parameters)

You can pass arbitrary objects to the template with the flash parameter.

 redirect_to :back, flash: {new_solution_errors: solution.errors}

And then access them in the template via the hash.

<% flash[:new_solution_errors].each do |err| %>

redirect_to new_user_path(:id => 1, :contact_id => 3, :name => 'suleman')