TypeCast

Rails
1

Hi
I have an ActiveRecord class ServiceDesk and a string “ServiceDesk”
.How can I convert the string “ServiceDesk” to create a new object of
the class ServiceDesk?

Concept is made clear below.

model = “ServiceDesk” // Now the variable, model, contains the string
“ServiceDesk” which is the name of an active record class.

I am trying to achieve the following. how can I really achieve this…
Thanks in advance.

model.find(29)

Sijo

2

On 3 Mar 2008, at 09:39, Sijo Kg wrote:

string
“ServiceDesk” which is the name of an active record class.

Could you not be writing model = ServiceDesk, in which case the
problem completely goes away?
If not you can use model = “ServiceDesk”.constantize

Fred

3

Hi
Thanks for your reply.It worked

Sijo

4

On Mar 3, 2008, at 1:43 AM, Frederick C. wrote:

Could you not be writing model = ServiceDesk, in which case the
problem completely goes away?
If not you can use model = “ServiceDesk”.constantize

Why not:

ServiceDesk.find(29)

What role does the string play in this?

5

Because in model=“ServiceDesk”

“ServiceDesk” is one of the fiels of a table of type String.And there is
also other entries in that field like Incident,etc.All are names of
ActiveRecord modelclasses

Sijo