Setting dynamic link path with url parameters in rails

Question

I'm building an app where I set links dynamically through a url parameter. I can't figure out how to make the link_to work with both a dynamic link and further url parameters.

 TemplateController
   def next
     @template = Template.find(params[:t])
   end 

Next View

 <%= link_to "#{@template.firstpage_link}(:t => @template.id, :prt => 1)" do %><%end%>

This is what it gives me:

 http://localhost:3000/role/step2_path(:t%20=%3E%[email protected],%20:prt%20=%3E%201)

I've tried a bunch of ways and I get either errors or this link

Answer 1

What you seem to be shooting for is something like

<%= link_to public_send(@template.firstpage_link, :t => @template.id, :prt => 1) do %>

public_send lets you call a public method by passing in its name as a symbol or string.

However, there may be more elegant ways to achieve this with the Rails router, as @Typpex is suggesting. If nothing else, you could clean up the view a bit with something like this in a helper:

def template_path(template)
  public_send(template.firstpage_link, :t => template.id, :prt => 1)
end

And then calling that from your view.