Links and Modular Apps

Links and Modular Apps

[andyl]

I would like to use Rack to mount modular apps.

Using the 'map' statement in config.ru, I can mount an app just fine.

But - the links in my sub-apps don't work.

If I mount App1 on '/app1', and App1 has a link <a href='/page'>,
it needs to render '/app1/page' instead of '/page'.

How do people get around this problem??

Thanks, Andy

Re: Links and Modular Apps

[Sylvain Desvé]

[-- Attachment #1: Type: text/plain, Size: 693 bytes --]

The Rack URLMap changes the env so that '/app1' is moved from PATH_INFO to
SCRIPT_NAME.

You need a helper in your Sinatra application to reconstruct paths :

helpers do
  def path_to(path)
    request.script_name + path
  en
end

and then use it in your templates :

<a href='#{path_to('/page')}'>

2010/10/22 andyl <akleak@gmail.com>

> I would like to use Rack to mount modular apps.
>
> Using the 'map' statement in config.ru, I can mount an app just fine.
>
> But - the links in my sub-apps don't work.
>
> If I mount App1 on '/app1', and App1 has a link <a href='/page'>,
> it needs to render '/app1/page' instead of '/page'.
>
> How do people get around this problem??
>
> Thanks, Andy

[-- Attachment #2: Type: text/html, Size: 1638 bytes --]

Re: Links and Modular Apps

[andyl]

Thanks - your approach worked !!

I think I'm going to create a link-rewriting middleware, so I can use
unmodified Sinatra apps - but this is a nice intermediate step.

- Andy

On Oct 21, 11:19 pm, Sylvain Desvé <sylvain.de...@gmail.com> wrote:
> The Rack URLMap changes the env so that '/app1' is moved from PATH_INFO to
> SCRIPT_NAME.
>
> You need a helper in your Sinatra application to reconstruct paths :
>
> helpers do
>   def path_to(path)
>     request.script_name + path
>   en
> end
>
> and then use it in your templates :
>
> <a href='#{path_to('/page')}'>
>
> 2010/10/22 andyl <akl...@gmail.com>
>
> > I would like to use Rack to mount modular apps.
>
> > Using the 'map' statement in config.ru, I can mount an app just fine.
>
> > But - the links in my sub-apps don't work.
>
> > If I mount App1 on '/app1', and App1 has a link <a href='/page'>,
> > it needs to render '/app1/page' instead of '/page'.
>
> > How do people get around this problem??
>
> > Thanks, Andy
>
>

Re: Links and Modular Apps

[Yehuda Katz]

this is something that Rails 3.1's engines do automatically (and rails
itself will do if you mount the main Rails app in a URLMap).

In my opinion, this makes more sense as a Sinatra helper than an
output modifying middleware (which is extremely expensive and
potentially error-prone)

Sent from my iPhone

On Oct 22, 2010, at 5:13 PM, andyl <akleak@gmail.com> wrote:

> Thanks - your approach worked !!
>
> I think I'm going to create a link-rewriting middleware, so I can use
> unmodified Sinatra apps - but this is a nice intermediate step.
>
> - Andy
>
> On Oct 21, 11:19 pm, Sylvain Desvé <sylvain.de...@gmail.com> wrote:
>> The Rack URLMap changes the env so that '/app1' is moved from PATH_INFO to
>> SCRIPT_NAME.
>>
>> You need a helper in your Sinatra application to reconstruct paths :
>>
>> helpers do
>>   def path_to(path)
>>     request.script_name + path
>>   en
>> end
>>
>> and then use it in your templates :
>>
>> <a href='#{path_to('/page')}'>
>>
>> 2010/10/22 andyl <akl...@gmail.com>
>>
>>> I would like to use Rack to mount modular apps.
>>
>>> Using the 'map' statement in config.ru, I can mount an app just fine.
>>
>>> But - the links in my sub-apps don't work.
>>
>>> If I mount App1 on '/app1', and App1 has a link <a href='/page'>,
>>> it needs to render '/app1/page' instead of '/page'.
>>
>>> How do people get around this problem??
>>
>>> Thanks, Andy
>>
>>