Many thanks for both your detailed answers, they were indeed very
helpful. I went ahead with the mixin module as I also wanted the
ordinals styled with <sup>'s. After some thought I should imagine a
much cleaner way would be by defining a regexp for the date string and
running that from the tags, but as you can probably tell I'm learning
as I go. I'm not sure well formed the tags are on the other side but
it's seems to be working as I wanted.
For your pleasure:
start_date = page.start_date
sdate = start_date.strftime("%A") + " " +
start_date.strftime("%d").to_i.ordinalize + " " +
start_date.strftime("%B")
sdate
Its probably not the place to ask, but if anyone knows a simple way to
replace those ordinals in the string using regexp I would be very
gratefiul!
Thanks once again for your all help,
Dominic
On 7 Dec 2007, at 14:18, Andrew O'Brien wrote:
> Hi Dominic,
>
> First off, I think what you're trying to do is already done by a Rails
> core extension to Integer. See:
>
> http://api.rubyonrails.org/classes/ActiveSupport/CoreExtensions/Integer/Inflections.html
>
> If you still want to do something like this, it needs to be more like
> (and I haven't tested this code):
>
> module Ordinalizable
> def ordinalize
> cardinal = self.to_i.abs
> if (10...20).include?(cardinal) then
> cardinal.to_s << 'th'
> else
> cardinal.to_s << %w{th st nd rd th th th th th th}[cardinal % 10]
> end
> end
> end
>
> # Only Integers should be ordinalized
> Integer.send :include, Ordinalizable
>
> Stick this in your extension's lib directory and explicitly require it
> from the extension file.
>
> Your first example where you monkey-patch Numeric should have worked
> (depending of course on if the file was loaded), however, like I said
> above, Floats and most of the other Numerics probably shouldn't be
> ordinalized. I think module mixin is generally cleaner from a design
> standpoint (opinions may vary), though.
>
> Your second one has a couple of problems, which I point out not out of
> toolishness, but in the hope that it's helpful: ;)
>
> 1) Numeric doesn't need to inherit from Page. This is only necessary
> for new Page types, which will appear in the Page Type select box.
>
> 2) Putting a class inside an extension is often a good way to keep
> your namespace clean, but you probably shouldn't do it for anything
> that inherits from ActiveRecord::Base.
>
> 3) It looks like what you've got is a case of mixed metaphors here:
> you're trying to mixin a module to put an instance method into a
> class, and you're trying to monkey-patch the class directly. Both are
> fine on their own (with varying opinions on cleanliness), but neither
> will work this way.
>
> 4) You don't want to include the module into Page. Since ordinalize
> assumes that self is an Integer, it doesn't make any sense for it to
> operate on a Page. If, however, you defined a module with a number of
> tags (which it sounds like you're also trying to do elsewhere), that
> is what you want to do to get the tags into Page.
>
> Hope this helps,
> Andrew
>
> On Dec 7, 2007 7:32 AM, <[EMAIL PROTECTED]> wrote:
>> Hi,
>>
>> I would like to access this snippet of code from within my extension
>> tags:
>>
>> class Numeric
>> def ordinal
>> cardinal = self.to_i.abs
>> if (10...20).include?(cardinal) then
>> cardinal.to_s << 'th'
>> else
>> cardinal.to_s << %w{th st nd rd th th th th th th}[cardinal %
>> 10]
>> end
>> end
>> end
>>
>> As the tags get called on the page I have tried adding the above to:
>>
>> module StartDate::PageExtensions
>> class Numeric < Page
>>
>> def ordinal
>> cardinal = self.to_i.abs
>> if (10...20).include?(cardinal) then
>> cardinal.to_s << 'th'
>> else
>> cardinal.to_s << %w{th st nd rd th th th th th th}[cardinal %
>> 10]
>> end
>> end
>>
>> end
>> end
>>
>> which is called from:
>>
>> Page.send :include, StartDate::PageExtensions
>>
>> The tag works fine when I don't call the new method, but when I do
>> I'm
>> getting an "undefined method 'ordinal' error", so I must be defining
>> it wrong, but how do I do it right?
>>
>> Any advice?
>>
>>
>> Thanks,
>>
>> Dominic
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