Passing fixed values next to a collection to an options_for_select in rails

Question

I am trying to pass to my select_tag both fixed values and loop values. I can perfectly write something like :

<%= select_tag "", options_for_select(session[:user_hotel_list].collect{ |hotel| [hotel["name"], hotel["id"]] }) %>

Here hotel["name"] will be the displayed value and hotel["id"] the "real value" of the field.

But if I try to add extra fixed values to my options_for_select I dont get the desired output. Let's say I want to add a select with "all hotels" with a value of "all". I would try something like that :

<%= select_tag "", options_for_select([["all hotels", "all"], session[:user_hotel_list].collect{ |hotel| [hotel["name"], hotel["id"]] }]) %>

But here I would get an array as output for the collection...

How can I correctly add extra fixed data to an options_for_select with a collection in rails ?

EDIT

For example this code :

<%= select_tag "dash_select", options_for_select( [["all hotels", "all"], ["other", "value"]] << session[:user_hotel_list].collect{ |hotel| [hotel["name"], hotel["id"]] }) %>

outputs this :

and obviously ["plaze", 31] isnt good !

Answer 1

Do you really need to add multiple items? Or is your example with just "All hotels" sufficient. Because in that case you could just do:

<%= select_tag "", options_for_select(...), { include_blank: "all hotels" } %>