Hello, I''m new to rails and ruby. I''m reading Simply Rails 2, and working through the chapters to learn how to use rails. -- backstory -- We''re on chapter 8 or so where we are learning about filters. At this step we are to add a before_filter, like so: before_filter :login_required, :only => [:new, :create] I''ve looked around for details, but the rails docs offer this: before_filter(*filters, &block) Alias for append_before_filter and: append_before_filter(*filters, &block) The passed filters will be appended to the filter_chain and will execute before the action on this controller is performed. This method is also aliased as before_filter -- actual question -- What I want to know is: Given this documentation, how would a user know that there is an :only, and an :except parameter, and what they take? Is it some ruby feature of &block paramters that I can toss in a hash? How do I find out what the valid keys are for such hash, and what they do? Thanks, John Schank --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk-unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en -~----------~----~----~----~------~----~------~--~---
On 3 Jul 2008, at 07:05, jschank wrote:> > before_filter(*filters, &block) > Alias for append_before_filter > > and: > > append_before_filter(*filters, &block) > The passed filters will be appended to the filter_chain and will > execute before the action on this controller is performed. > This method is also aliased as before_filter > > -- actual question -- > > What I want to know is: Given this documentation, how would a user > know that there is an :only, and an :except parameter, and what they > take?You probably wouldn''t. :only and :except should be arrays of actions that filter should apply or not apply to. Some thing has gone funny with the docs on api.rubyonrails.org, as there''s a whole swathe of info about filters that has gone. You can still read it here.> > Is it some ruby feature of &block paramters that I can toss in a hash? > How do I find out what the valid keys are for such hash, and what they > do?No, the &block stuff gives the method any block specified as a proc object. the magic hash parameter is swallowed up by the parameter with a splat Fred --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk-unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en -~----------~----~----~----~------~----~------~--~---
Ah. Ok. Thanks for the reply. I come from Java development, and I''ve been using Netbeans as my rails IDE (though I know you don''t actually need one) And one thing I really miss is the abilty to highlight a method and get pop up help about it. Or to have intellisense which shows the possible alternatives. Following a tutorial book is all well and good, but it only shows you how to do specifically what the tutorial shows. I''m finding it a little bit difficult to see alternatives and possibilities in the Rails / Ruby docs. I suppose I''ll be browsing here a lot more. :) On Jul 3, 5:05 am, Frederick Cheung <frederick.che...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:> On 3 Jul 2008, at 07:05, jschank wrote: > > > > > before_filter(*filters, &block) > > Alias for append_before_filter > > > and: > > > append_before_filter(*filters, &block) > > The passed filters will be appended to the filter_chain and will > > execute before the action on this controller is performed. > > This method is also aliased as before_filter > > > -- actual question -- > > > What I want to know is: Given this documentation, how would a user > > know that there is an :only, and an :except parameter, and what they > > take? > > You probably wouldn''t. :only and :except should be arrays of actions > that filter should apply or not apply to. > Some thing has gone funny with the docs on api.rubyonrails.org, as > there''s a whole swathe of info about filters that has gone. You can > still read it here. > > > > > Is it some ruby feature of &block paramters that I can toss in a hash? > > How do I find out what the valid keys are for such hash, and what they > > do? > > No, the &block stuff gives the method any block specified as a proc > object. > > the magic hash parameter is swallowed up by the parameter with a splat > > Fred--~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk-unsubscribe@googlegroups.com For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en -~----------~----~----~----~------~----~------~--~---
On 3 Jul 2008, at 17:40, jschank wrote:> > Ah. Ok. > Thanks for the reply. > > I come from Java development, and I''ve been using Netbeans as my rails > IDE (though I know you don''t actually need one) And one thing I really > miss is the abilty to highlight a method and get pop up help about it. > Or to have intellisense which shows the possible alternatives. >The problem in this particular case is that the documentation got mashed. I don''t know netbeans, but i''d be surprised if it didn''t have some sort of documentation lookup. I use textmate as my editor and if I hit control H I get the rdoc for the method in question Fred> Following a tutorial book is all well and good, but it only shows you > how to do specifically what the tutorial shows. I''m finding it a > little bit difficult to see alternatives and possibilities in the > Rails / Ruby docs. > > I suppose I''ll be browsing here a lot more. > :) > > On Jul 3, 5:05 am, Frederick Cheung <frederick.che...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> > wrote: >> On 3 Jul 2008, at 07:05, jschank wrote: >> >> >> >>> before_filter(*filters, &block) >>> Alias for append_before_filter >> >>> and: >> >>> append_before_filter(*filters, &block) >>> The passed filters will be appended to the filter_chain and will >>> execute before the action on this controller is performed. >>> This method is also aliased as before_filter >> >>> -- actual question -- >> >>> What I want to know is: Given this documentation, how would a user >>> know that there is an :only, and an :except parameter, and what they >>> take? >> >> You probably wouldn''t. :only and :except should be arrays of actions >> that filter should apply or not apply to. >> Some thing has gone funny with the docs on api.rubyonrails.org, as >> there''s a whole swathe of info about filters that has gone. You can >> still read it here. >> >> >> >>> Is it some ruby feature of &block paramters that I can toss in a >>> hash? >>> How do I find out what the valid keys are for such hash, and what >>> they >>> do? >> >> No, the &block stuff gives the method any block specified as a proc >> object. >> >> the magic hash parameter is swallowed up by the parameter with a >> splat >> >> Fred > >--~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk-unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en -~----------~----~----~----~------~----~------~--~---