Rails - Apr 2006 - Handling errors - incorrect value entered in url...

I have many "edit" actions in my project. If the url is like 
http://localhost/project/3/edit and someone enters 
http://localhost/project/3333333/edit the edit action will fails because 
it cannot find a project with id of 3333333.

To combat this I am adding to every action like edit:

rescue
redirect_to :action => ''index''
flash[''errors''] = "That project cannot be edited."

This works, however is there a way to do this globally or do I have to 
entered this for every action that could error in this way? I understand 
about using routes to narrow down what URL''s can be typed, but this
does
not escape an error when a value entered is incorrect.

Incidentally, I looked at the Typo code and could not see any error 
checking, not a rescue in sight. How do they do it in typo?


-- 
Posted via http://www.ruby-forum.com/.

On Apr 28, 2006, at 3:59 AM, James Whittaker wrote:
> I have many "edit" actions in my project. If the url is like
> http://localhost/project/3/edit and someone enters
> http://localhost/project/3333333/edit the edit action will fails  
> because
> it cannot find a project with id of 3333333.
>
> To combat this I am adding to every action like edit:
>
> rescue
> redirect_to :action => ''index''
> flash[''errors''] = "That project cannot be
edited."
> This works, however is there a way to do this globally or do I have to
> entered this for every action that could error in this way? I  
> understand
> about using routes to narrow down what URL''s can be typed, but
this
> does
> not escape an error when a value entered is incorrect.
You could have a before_filter call a function that tests that the id  
in your URL is valid. If you also want to verify that the right  
person is attempting to edit it.. you could do that there as well.

Hope that helps.

Cheers,

-Robby


Robby Russell
Founder & Executive Director

PLANET ARGON, LLC
Ruby on Rails Development, Consulting & Hosting

www.planetargon.com
www.robbyonrails.com

+1 503 445 2457
+1 877 55 ARGON [toll free]
+1 815 642 4968 [fax]

James, take a look at this:

http://rubyonrails.org/api/classes/ActionController/Rescue.html#M000069

Implement the ''rescue_action_in_public'' method in your
controller (or in
application.rb) to define behavior based on a common exception.  You could
display a 404, or whatever you want.

On 4/28/06, Robby Russell <robby.lists@planetargon.com>
wrote:
>
>
> On Apr 28, 2006, at 3:59 AM, James Whittaker wrote:
>
> > I have many "edit" actions in my project. If the url is like
> > http://localhost/project/3/edit and someone enters
> > http://localhost/project/3333333/edit the edit action will fails
> > because
> > it cannot find a project with id of 3333333.
> >
> > To combat this I am adding to every action like edit:
> >
> > rescue
> > redirect_to :action => ''index''
> > flash[''errors''] = "That project cannot be
edited."
> > This works, however is there a way to do this globally or do I have to
> > entered this for every action that could error in this way? I
> > understand
> > about using routes to narrow down what URL''s can be typed,
but this
> > does
> > not escape an error when a value entered is incorrect.
>
> You could have a before_filter call a function that tests that the id
> in your URL is valid. If you also want to verify that the right
> person is attempting to edit it.. you could do that there as well.
>
> Hope that helps.
>
> Cheers,
>
> -Robby
>
>
> Robby Russell
> Founder & Executive Director
>
> PLANET ARGON, LLC
> Ruby on Rails Development, Consulting & Hosting
>
> www.planetargon.com
> www.robbyonrails.com
>
> +1 503 445 2457
> +1 877 55 ARGON [toll free]
> +1 815 642 4968 [fax]
>
>
> _______________________________________________
> Rails mailing list
> Rails@lists.rubyonrails.org
> http://lists.rubyonrails.org/mailman/listinfo/rails
>
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Also check out the wonderful exception_notification plugin for ideas as to
how you can use this to better suit your needs.

On 4/28/06, Michael Gorsuch <michael.gorsuch@gmail.com>
wrote:
>
> James, take a look at this:
>
> http://rubyonrails.org/api/classes/ActionController/Rescue.html#M000069
>
> Implement the ''rescue_action_in_public'' method in your
controller (or in
> application.rb) to define behavior based on a common exception.  You could
> display a 404, or whatever you want.
>
>
> On 4/28/06, Robby Russell < robby.lists@planetargon.com> wrote:
> >
> >
> > On Apr 28, 2006, at 3:59 AM, James Whittaker wrote:
> >
> > > I have many "edit" actions in my project. If the url is
like
> > > http://localhost/project/3/edit and someone enters
> > > http://localhost/project/3333333/edit the edit action will fails
> > > because
> > > it cannot find a project with id of 3333333.
> > >
> > > To combat this I am adding to every action like edit:
> > >
> > > rescue
> > > redirect_to :action => ''index''
> > > flash[''errors''] = "That project cannot be
edited."
> > > This works, however is there a way to do this globally or do I
have to
> > > entered this for every action that could error in this way? I
> > > understand
> > > about using routes to narrow down what URL''s can be
typed, but this
> > > does
> > > not escape an error when a value entered is incorrect.
> >
> > You could have a before_filter call a function that tests that the id
> > in your URL is valid. If you also want to verify that the right
> > person is attempting to edit it.. you could do that there as well.
> >
> > Hope that helps.
> >
> > Cheers,
> >
> > -Robby
> >
> >
> > Robby Russell
> > Founder & Executive Director
> >
> > PLANET ARGON, LLC
> > Ruby on Rails Development, Consulting & Hosting
> >
> > www.planetargon.com
> > www.robbyonrails.com
> >
> > +1 503 445 2457
> > +1 877 55 ARGON [toll free]
> > +1 815 642 4968 [fax]
> >
> >
> > _______________________________________________
> > Rails mailing list
> > Rails@lists.rubyonrails.org
> > http://lists.rubyonrails.org/mailman/listinfo/rails
> >
>
>
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