Question

I am using Ruby On Rails 3.x

Multiple views of a controller call one and the same partial, as 90% of the partial is the same for all the views, the other 10% are handled via IF/ENDIF in the partial.

Now I need a link to the current URL and pass it a parameter, e.g. if the current URL ishttp://myapp.com/welcome/index_1 then I need a link to http://myapp/welcome/index_1?par=abcd
With

<%=link_to "Info",url_for(:only_path=>true)%>

I get the link to the current URL, but how to add the additional parameter.

<%=link_to "Info",url_for(:only_path=>true,:par=>"abcd")%>

isn’t working, neither is:

<%=link_to "Info",url_for(:only_path=>true), :par=>"abcd"%>

Answer 1

Try this

<%= link_to "info", url_for(par: "abcd") %>