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
On 3 Jul 2008, at 07:05, jschank wrote:
– 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
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 C. [email protected]
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