cppcms-users

[Cppcms-users] Create own 404 page

[augustin <aug...@ov...>]

Hello,

How to create a custom 404 page.

The doc says:

    virtual void cppcms::application::main   (  std::string   url    )  
   [virtual]
  
   This is main function of the application that is called when it is matched
   according to the regular expression in the applications_pool class. 
   By default, main calls dispatcher().dispatch(url). And if the last fails,
   it creates 404 Error page. This allows developers to create its own hooks
   for reaction on incoming URL as, initialization and cleanup of general
   resources, Custom 404 and error handlers etc. 
   Reimplemented in cppcms::rpc::json_rpc_server.


I don't understand the above explanation.

Following the examples provided in the source, I make use of 
dispatcher().assign() within my application constructor.  
Thus myApplication::main() is no longer called at all. 

I fail to see how to use either myApplication::main() or 
myApplication::myApplication() or even disptacher().assign() to register a 
callback for 404 pages (or for any other codes, inc. access denied...).


Augustin.






-- 
Friends: http://www.reuniting.info/ http://activistsolutions.org/
My projects:
http://astralcity.org/ http://3enjeux.overshoot.tv/ http://linux.overshoot.tv/ 
http://overshoot.tv/ http://charityware.info/ http://masquilier.org/
http://openteacher.info/ http://minguo.info/ 
http://www.wechange.org/ http://searching911.info/












.

Re: [Cppcms-users] Create own 404 page

[Artyom <art...@ya...>]

>    This is main function of the application that is called when it is  matched
>    according to the regular expression in the applications_pool  class. 
>    By default, main calls dispatcher().dispatch(url). And if the  last fails,
>    it creates 404 Error page.

Very simply.

That is the implementation of cppcms::application::main(std::string)
exactly according to this description

void application::main(std::string url)
{
   if(!dispatcher().dispatch(url)) {
       response().make_error_response(http::response::not_found);
   }
}

So just reimplement it the way you want.

Additionally you can just do following:

  dispatcher().assign(".*",&myclass::my404,this)

And make sure it is the last URL you add to the list.

Artyom


      

Re: [Cppcms-users] Create own 404 page

[augustin <aug...@ov...>]

On Wednesday 25 August 2010 08:39:42 pm Artyom wrote:
> Very simply.

Yes, after you explain, it always looks simple to me... and I am embarrassed I 
asked in the first place ;)
 

I come for a mostly procedural type of programming (Drupal) and I still don't 
always think in terms of classes and sub-classes and method override. My mind 
often goes on the wrong track.

Anyway, for other future newbies like me, I created this simple tutorial:
http://art-blog.no-ip.info/wikipp/en/page/cppcms_1x_tut_404


Did you see my patch on the sourceforge bug tracker ?

Shalom,

Augustin.



-- 
Friends: http://www.reuniting.info/ http://activistsolutions.org/
My projects:
http://astralcity.org/ http://3enjeux.overshoot.tv/ http://linux.overshoot.tv/ 
http://overshoot.tv/ http://charityware.info/ http://masquilier.org/
http://openteacher.info/ http://minguo.info/ 
http://www.wechange.org/ http://searching911.info/












.