Rails - Dec 2005 - how to use aggregates in a form

Hi,
does anybody have a good way of handling aggregates in forms?

I have an aggregate object Money that is holds the price of an item. So
my Item would contain a reference to Money:

    composed_of :price,
                            :class_name => Money,
                            :mapping => [[:price_amount, :amount],
                                                     [:price_currency,
:currency]

Since the form helpers don''t support nesting, how do I display the
price
in the form?

Do I have to use a workaround something like:
<input type="text" id="item_price_amount"
name="item[price][amount]"
value="<%=@item.price.amount%>" />

Any help would be really appreciated :-)

Thanks

Peter

Hi Peter,

Maybe you could define a couple of methods to set and get according to your
requriements

def price_ammount
 some stuff
end

def price_ammount=(a_price)
 some stuff
end

Then in your view you could use those as though they are fields.

I think this should work, I haven''t tested it tho.

Cheers
Dan


On 12/2/05, Peter Bohm <Bohm-+Ou9gZH0t5G+51mZqJFLXQ@public.gmane.org>
wrote:
>
> Hi,
> does anybody have a good way of handling aggregates in forms?
>
> I have an aggregate object Money that is holds the price of an item. So
> my Item would contain a reference to Money:
>
>     composed_of :price,
>                             :class_name => Money,
>                             :mapping => [[:price_amount, :amount],
>                                                      [:price_currency,
> :currency]
>
> Since the form helpers don''t support nesting, how do I display the
price
> in the form?
>
> Do I have to use a workaround something like:
> <input type="text" id="item_price_amount"
name="item[price][amount]"
>
value="<%=-oJWR6z7W/o+QwGVeCRXvBV6hYfS7NtTn@public.gmane.org%>"
/>
>
> Any help would be really appreciated :-)
>
> Thanks
>
> Peter
>
> _______________________________________________
> Rails mailing list
> Rails-1W37MKcQCpIf0INCOvqR/iCwEArCW2h5@public.gmane.org
> http://lists.rubyonrails.org/mailman/listinfo/rails
>

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Hi Dan,

thank you very much for help

I only wish the rails supported nested parameters - for both
associations and aggregates :-)

Thanks

Peter

Liquid wrote:
Hi Peter,

Maybe you could define a couple of methods to set and get according to
your requriements

def price_ammount

 some stuff

end

def price_ammount=(a_price)

 some stuff

end

Then in your view you could use those as though they are fields.

I think this should work, I haven''t tested it tho.

Cheers

Dan

  On 12/2/05, Peter Bohm <Bohm-+Ou9gZH0t5G+51mZqJFLXQ@public.gmane.org
  > wrote:
  Hi,

does anybody have a good way of handling aggregates in forms?

I have an aggregate object Money that is holds the price of an item. So

my Item would contain a reference to Money:

    composed_of :price,

                            :class_name => Money,

                            :mapping => [[:price_amount, :amount],

                                                     [:price_currency,

:currency]

Since the form helpers don''t support nesting, how do I display the
price

in the form?

Do I have to use a workaround something like:

value="<%@item.price.amount%>" />

Any help would be really appreciated :-)

Thanks

Peter

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Rails mailing list

    Rails-1W37MKcQCpIf0INCOvqR/iCwEArCW2h5@public.gmane.org

    http://lists.rubyonrails.org/mailman/listinfo/rails

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Peter Bohm wrote:
> I only wish the rails supported nested parameters - for both 
> associations and aggregates :-)
Peter, here''s the patch for this to which I referred in the
earlier thread: http://dev.rubyonrails.org/ticket/2053


-- 
We develop, watch us RoR, in numbers too big to ignore.

Hi Mark,
thank you very much - seems to be exactly what I need :-)

It''s 2:35am - will have a look at it tomorrow morning

thanks

Peter

Mark Reginald James wrote:
> Peter Bohm wrote:
>
>> I only wish the rails supported nested parameters - for both
>> associations and aggregates :-)
>
>
> Peter, here''s the patch for this to which I referred in the
> earlier thread: http://dev.rubyonrails.org/ticket/2053
>
>