Identifying the attributes of an object dynamically

rubyonrails-talk
1

Hello

I have an object 'details' which comprises of many attributes like

name address.city address.state department.name

For a given object of 'details', I am trying to obtain the values of some attributes from a given list ("name","department.name "), say from the config. I tried iterating over the list and access the object's attrib using instance_variable_get, but ended up with the error

(["name"] is not a symbol)

Is there something incorrect that I am trying to do ?

~Shankar.

2

Hello

I have an object 'details' which comprises of many attributes like

name address.city address.state department.name

For a given object of 'details', I am trying to obtain the values of some attributes from a given list ("name","department.name "), say
from the config. I tried iterating over the list and access the object's attrib using instance_variable_get, but ended up with the error

Assuming you are talking about an ActiveRecord object, database
attributes are not instance variables. attributes surprisingly enough
contains all the attributes.

Fred

3

Ah! yes.. thanks for pointing that out, Fred. But is there something like 'attributes_get' that I should be using to get the values of the attribute in my case ?

~Shankar.

Aww.. was really a very dumb question to ask... :frowning:

object.attributes[<attr_name>] would obviously give the value..

Thanks for the help, Fred. Appreciate it !!

~Shankar.