它实际上与GET参数相同.为了证明这一点，我有一个搜索表单，该表单将一个参数发布到同一操作:

it's the same actually as GET parameters. To prove that, I have a search form that posts one parameter to the same action :

def invite

    if request.post? 

        search= [params[:search]]
        #...

    end
end

在视图中-也许您的问题来自此

<% form_tag do %>
        <%= text_field_tag :search, params[:search] %>
        <%= submit_tag "Rechercher" %>
<% end %>