How to treat parameters to custom tags as variables?

[Seth Ladd]

Hello,

I've written a custom tag and I'd like to be able to pass a variable into the tag. However, Liquid will turn that variable into a string literal.

For example:

{% nav page /some/url.html %} blah blah {% endnav %}

The page is a variable, not a string.

Is there a way to treat page as a variable and not a string in Liquid?

Thanks very much in advance!

Seth

[etagwerker]

I believe you need to save that string when you initialize the block instance. 

Then later when you want to render the block, you use that string to access a variable in the context. 

Something like this: 

  def initialize(tag_name, markup, tokens)

    if markup =~ Syntax

      @page_name = $1

    else

      raise ::Liquid::SyntaxError.new("Syntax Error!")

    end

    super

  end

  def render(context)

    context.stack do

      collection = context[@page_name]

      ...

    end

  end

I hope it helps. 

- Ernesto