acts_as_developer comments

"Validating Mutually-Exclusive Attributes" by rssnewsdigest

Thu, 03 Apr 2008 09:05:47 -0400

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"Now When Did I Add That?" by chad

Tue, 16 Oct 2007 16:31:54 -0400

i love svn blame but it always blames me, so i stopped using it :)

"Validating Mutually-Exclusive Attributes" by Bob

Sun, 30 Sep 2007 16:47:45 -0400

nioloash: I think the main advantage of using the validate class method with a block is that you can specify it multiple times, which allows you to logically separate your validations.

Other than that there is no real advantage.

"Validating Mutually-Exclusive Attributes" by nicolash

Thu, 27 Sep 2007 07:23:01 -0400

Could you explain how the giving a block is more useful then to validate without? Where is it different to:

def validate if name.blank? && email.blank? errors.add_to_base(“You must specify a name or an email address”) end end

"Validating Mutually-Exclusive Attributes" by Bob

Fri, 21 Sep 2007 08:45:09 -0400

chad: no, this validate method has been around since the early days of Rails.

"Validating Mutually-Exclusive Attributes" by chad

Wed, 19 Sep 2007 23:43:03 -0400

Hi Bob – just found your blog. you should post more often. there are a number of places i could have used this validation block feature. was this new in rails 1.2.3?

"Don't Use Instance Variables in Partials" by Guy

Fri, 31 Aug 2007 14:34:56 -0400

Very useful particularly the bit about using the :locals option on render :partial. Thanks

"Don't Use Instance Variables in Partials" by Abhilash Veettil

Sun, 19 Aug 2007 05:14:21 -0400

I want to show the list of customers in all my pages. So I made a call to the “_customers” partial from my application.rhtml template.

Code =>

<%= render(:partial => “customers/customers” , :collection => @all_customers) %>

and the code in _customers partial look like this =>

<%= customers.name %>

and my “customers” controller look like this =>

def customers
  @all_customers = Customer.find(:all)
end

but am getting the following error

You have a nil object when you didn’t expect it! The error occurred while evaluating nil.name

thanks//Abhi