Question

i have the problem, that i want to pass custom url params to the form_tag method.
i have tried many ways explained at stackoverflow, but no one seems to be correct for rails 3.2.8.

This is my current:

<%= form_tag search_results_path,
             :method => "get",
             :params => params.merge(:button => "..."),
             class: "form-search" do %>

This doesn’t work too:

<%= form_tag search_results_path,
             :method => "get",
             :params => params.except(:controller, :action).
                        merge(:button => "..."),
             class: "form-search" do %>

But when search_results_path finish loading, params[:button] is not set.

Thanks for your help.

EDIT:

I try to render a form in a view, which has action="/search/params?button=xxx. This should be the initial state for my tabs and every time the page gets reloaded, this url param should be passed too, to provide my current tab.

Answer 1

dude, please explain WHAT you are trying to do, not how.
You don’t pass parameters to a form, that does not make sense .
Explain what is your goal and I may be able to help you.

If you want to pass parameters from url to your controller through the form, you just create a hidden field set its value with params[:param_name]

EDIT==============

You have to use url_for or polymorphic_path to generate url with parameters.
Like:

    form_tag(:url => url_for(...path_with_parameters))

or

form_tag(:url => polymorphic_path(...path_with_parameters))