Rails - Jun 2005 - Complex helper with block help

Hi everyone,

I am writing a helper function that takes a parameter and block and
wraps some HTML around it. e.g.

def box_with_caption(caption, &block)
	data = capture(&block)
	buffer = render_partial("helpers/box_caption", :caption =>
caption)
	buffer << render_partial("helpers/box_data", :data => data)
	buffer
end

however, when I attempt the following, it doesn''t work.

<%= box_with_caption("Caption here") do %>
HTML for the box in here.
<% end %>

To make this work I need to do something like:

<% box = box_with_caption("Caption here") do %>
HTML for the box in here.
<% end %>
<%= box %>

Anyone know how to manage this without having to do the variable assign
and then output?

Thanks,

Wayne

On Jun 28, 2005, at 8:02 PM, Wayne Robinson wrote:
> Hi everyone,
>
> I am writing a helper function that takes a parameter and block and
> wraps some HTML around it. e.g.
>
> def box_with_caption(caption, &block)
>     data = capture(&block)
>     buffer = render_partial("helpers/box_caption", :caption =>
> caption)
>     buffer << render_partial("helpers/box_data", :data
=> data)
>     buffer
> end
>
Try something like this instead:

def box_with_caption(caption, &block)
     insert = Proc.new {|text| concat text, block.binding}
     insert[render_partial("helpers/box_caption", :caption =>
caption)]
     insert[render_partial("helpers/box_data", :data =>
capture(&block)]
end

Then call it like this (note that there is no = sign after the <%):

<% box_with_caption("Caption here") do %>
HTML for the box
<% end %>

Duane Johnson
(canadaduane)




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Thanks, I was looking for this but I couldn''t find what to use for
binding in concat.

 

- Wayne

 

________________________________

From: rails-bounces-1W37MKcQCpIf0INCOvqR/iCwEArCW2h5@public.gmane.org
[mailto:rails-bounces-1W37MKcQCpIf0INCOvqR/iCwEArCW2h5@public.gmane.org] On
Behalf Of Duane Johnson
Sent: Thursday, 30 June 2005 12:40 AM
To: rails-1W37MKcQCpIf0INCOvqR/iCwEArCW2h5@public.gmane.org
Subject: Re: [Rails] Complex helper with block help

 

On Jun 28, 2005, at 8:02 PM, Wayne Robinson wrote:

	Hi everyone,

	 

	I am writing a helper function that takes a parameter and block
and

	wraps some HTML around it. e.g.

	 

	def box_with_caption(caption, &block)

	    data = capture(&block)

	    buffer = render_partial("helpers/box_caption", :caption =>

	caption)

	    buffer << render_partial("helpers/box_data", :data =>
data)

	    buffer

	end

	 

 

Try something like this instead:

 

def box_with_caption(caption, &block)

    insert = Proc.new {|text| concat text, block.binding}

    insert[render_partial("helpers/box_caption", :caption =>
caption)]

    insert[render_partial("helpers/box_data", :data =>
capture(&block)]

end

 

Then call it like this (note that there is no = sign after the <%):

 

<% box_with_caption("Caption here") do %>

HTML for the box

<% end %>

 

Duane Johnson

(canadaduane)

 

 



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Rails mailing list
Rails-1W37MKcQCpIf0INCOvqR/iCwEArCW2h5@public.gmane.org
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