On Sat, Nov 1, 2008 at 6:36 AM, mithila karunarathna
<[EMAIL PROTECTED]>wrote:
>
>
> On Fri, Oct 31, 2008 at 8:42 AM, Bill Walton <[EMAIL PROTECTED]>wrote:
>
>>
>> Hi,
>>
>> xxmithila wrote:
>>
>> > how can I retrive data from a specific row of table
>> > by giving two or more properties of that row?
>> > examlpe I want to get data which
>> > ID = 23 and NAME = "xx" like
>>
>> If you know the ID, you don't need anything else. IDs are unique so the
>> query on the second field just eats cycles with no upside. Assuming this
>> was just a poorly thought-out example...
>>
>> two or more properties are queried, in the most general case, with:
>> Model.find(all, :conditions => ["first_condition =? && second_condition =
>> ?", first_param, second_param])
>>
>> Use the find_by helpers for more readable / idiomatic code.
>>
>> HTH,
>> Bill
>>
>>
>> hoooo
>>
> @mydata = ModelName.find('23', :conditions => "NAME = 'xxx'" )
> but this command return error
> "
>
> You have a nil object when you didn't expect it!
> You might have expected an instance of Array.
> The error occurred while evaluating nil.each
>
> "
> I know that code is correct but it return error. What is the reson for
> this?
> xxmithila
>
>
>
thankx friends I got the answer...
thankx again
--~--~---------~--~----~------------~-------~--~----~
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@googlegroups.com
To unsubscribe from this group, send email to [EMAIL PROTECTED]
For more options, visit this group at
http://groups.google.com/group/rubyonrails-talk?hl=en
-~----------~----~----~----~------~----~------~--~---
