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Zack Ham

2006-Nov-28 23:20 UTC

passing proc blocks to rhtml templates

I want to create layout components that function like my layout does.   A
layout can yield the body content, is there any way to get this
functionality in rhtml templates?  For example, say I have a layout
component that has a title bar and a content area.  If it is a box with
rounded corners I do not want to repeat this html everywhere, so I''ll
make a
helper.  Here is what I have to do now:

<%= start_mini_window("Log in!") %>
log in form html here
<%= end_mini_window %>

Is it possible to do this?

<% mini_window("Log in!") do %>
log in form html here
<% end %>

This feels cleaner to me, but I was unable to get it working.  I stopped
trying to get this working when I realized that render() only uses your proc
block when creating a javascriptgenerator.

Any ideas?

Thanks,
Zack Ham


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Daniel N

2006-Nov-28 23:34 UTC

head link

Re: passing proc blocks to rhtml templates

On 11/29/06, Zack Ham <zackham-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:>
> I want to create layout components that function like my layout does.   A
> layout can yield the body content, is there any way to get this
> functionality in rhtml templates?  For example, say I have a layout
> component that has a title bar and a content area.  If it is a box with
> rounded corners I do not want to repeat this html everywhere, so
I''ll make a
> helper.  Here is what I have to do now:
>
> <%= start_mini_window("Log in!") %>
> log in form html here
> <%= end_mini_window %>
>
> Is it possible to do this?
>
> <% mini_window("Log in!") do %>
> log in form html here
> <% end %>
>
> This feels cleaner to me, but I was unable to get it working.  I stopped
> trying to get this working when I realized that render() only uses your
proc
> block when creating a javascriptgenerator.
>
> Any ideas?
>
> Thanks,
> Zack Ham

I''m not sure that I can help you with your particular case, but the
form_for
helper works like this.

The code for that method is


      def form_for(object_name, *args, &proc)
        raise ArgumentError, "Missing block" unless block_given?
        options = args.last.is_a?(Hash) ? args.pop : {}
        concat(form_tag(options.delete(:url) || {},
options.delete(:html) || {}), proc.binding)
        fields_for(object_name, *(args << options), &proc)
        concat(''</form>'', proc.binding)
      end

This can be found at
http://dev.rubyonrails.org/svn/rails/trunk/actionpack/lib/action_view/helpers/form_helper.rb

That might give you some ideas.


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Zack Ham

2006-Nov-28 23:42 UTC

head link

Re: passing proc blocks to rhtml templates

I looked at form_for because it is a good example of the benefits to proc
blocks in templates.  The code didn''t tell me a whole lot
unfortunately.
What I really want to do is take the proc block contents and yield it into a
string, then pass that string to a partial template. I didn''t see
form_for
doing that, but maybe I missed something.

If I can yield the proc block contents into a string, that lets me actually
pass parameters to the block and derive benefits like form_for does.  Can
anyone explain how/if this is possible, and how it would work with concat()?

Thanks!
Zack



On 11/28/06, Daniel N <has.sox-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:>
>
>
> On 11/29/06, Zack Ham
<zackham-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
> >
> > I want to create layout components that function like my layout does.
> > A layout can yield the body content, is there any way to get this
> > functionality in rhtml templates?  For example, say I have a layout
> > component that has a title bar and a content area.  If it is a box
with
> > rounded corners I do not want to repeat this html everywhere, so
I''ll make a
> > helper.  Here is what I have to do now:
> >
> > <%= start_mini_window("Log in!") %>
> > log in form html here
> > <%= end_mini_window %>
> >
> > Is it possible to do this?
> >
> > <% mini_window("Log in!") do %>
> > log in form html here
> > <% end %>
> >
> > This feels cleaner to me, but I was unable to get it working.  I
stopped
> > trying to get this working when I realized that render() only uses
your proc
> > block when creating a javascriptgenerator.
> >
> > Any ideas?
> >
> > Thanks,
> > Zack Ham
>
>
> I''m not sure that I can help you with your particular case, but
the
> form_for helper works like this.
>
> The code for that method is
>
>
>       def form_for(object_name, *args, &proc)
>         raise ArgumentError, "Missing block" unless block_given?
>         options = args.last.is_a?(Hash) ? args.pop : {}
>         concat(form_tag(options.delete
> (:url) || {}, options.delete(:html) || {}), proc.binding)
>         fields_for(object_name, *(args << options), &proc)
>         concat(''</form>'', proc.binding)
>       end
>
> This can be found at
>
http://dev.rubyonrails.org/svn/rails/trunk/actionpack/lib/action_view/helpers/form_helper.rb
>
> That might give you some ideas.
>
>
>
>
>
>
> >
>

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WuyaSea Operator

2006-Nov-29 05:33 UTC

head link

Re: passing proc blocks to rhtml templates

copy paste from form_for() method.  you may have to figure out how to
pass actual params.
concat() just append strings to output buffer string.

in your controller helper:
-----------------------------------------------------------
  def widget(&proc)
    raise ArgumentError, "Missing block" unless block_given?
    concat(''<div><p>hello world</p>'',
proc.binding)
    yield proc
    concat(''</div>'', proc.binding)
  end

in rhtml
--------------------------------------------------------
<% widget do |w| %>
does it work?
<% end %>

and you got
------------------------------------------------------
<div><p>hello world</p>
does it work?

</div>


wuyaSea operator
http://www.wuyaSea.com


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Jimmy Kittiyachavalit

2006-Nov-29 11:44 UTC

head link

Re: passing proc blocks to rhtml templates

I think this article at "Err the Blog" has the solution you are
looking for:

http://errtheblog.com/post/13



On 11/28/06, WuyaSea Operator
<wuyasea-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:>
>
> copy paste from form_for() method.  you may have to figure out how to
> pass actual params.
> concat() just append strings to output buffer string.
>
> in your controller helper:
> -----------------------------------------------------------
>   def widget(&proc)
>     raise ArgumentError, "Missing block" unless block_given?
>     concat(''<div><p>hello world</p>'',
proc.binding)
>     yield proc
>     concat(''</div>'', proc.binding)
>   end
>
> in rhtml
> --------------------------------------------------------
> <% widget do |w| %>
> does it work?
> <% end %>
>
> and you got
> ------------------------------------------------------
> <div><p>hello world</p>
> does it work?
>
> </div>
>
>
> wuyaSea operator
> http://www.wuyaSea.com
>
>
> >
>

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Zack Ham

2006-Nov-29 19:03 UTC

head link

Re: passing proc blocks to rhtml templates

Perfect.  Thanks

Zack

On 11/29/06, Jimmy Kittiyachavalit
<jkittiya-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:>
> I think this article at "Err the Blog" has the solution you are
looking
> for:
>
> http://errtheblog.com/post/13
>
>
>
> On 11/28/06, WuyaSea Operator
<wuyasea-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
> >
> >
> > copy paste from form_for() method.  you may have to figure out how to
> > pass actual params.
> > concat() just append strings to output buffer string.
> >
> > in your controller helper:
> > -----------------------------------------------------------
> >   def widget(&proc)
> >     raise ArgumentError, "Missing block" unless block_given?
> >     concat(''<div><p>hello
world</p>'', proc.binding)
> >     yield proc
> >     concat(''</div>'', proc.binding)
> >   end
> >
> > in rhtml
> > --------------------------------------------------------
> > <% widget do |w| %>
> > does it work?
> > <% end %>
> >
> > and you got
> > ------------------------------------------------------
> > <div><p>hello world</p>
> > does it work?
> >
> > </div>
> >
> >
> > wuyaSea operator
> > http://www.wuyaSea.com
> >
> >
> >
> > > >
> >

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Rails - Nov 2006 - passing proc blocks to rhtml templates

passing proc blocks to rhtml templates

Re: passing proc blocks to rhtml templates

Re: passing proc blocks to rhtml templates

Re: passing proc blocks to rhtml templates

Re: passing proc blocks to rhtml templates

Re: passing proc blocks to rhtml templates