Question

model Sample has attributes car,bike

x ="bike"

y = Sample.new

How can I do?

y.x ??
It gives me an error
Is there any way I can do it, I know that x is an attribute but I dont know which one.

So how can I get y.x?

Answer 1

You can use send to invoke a method on an object when the method is stored as a string:

x = "bike"

y = Sample.new

y.send(x) # Equivalent to y.bike

The following are equivalent, except that you may send protected methods:

object.method_name
object.send("method_name")
object.send(:method_name)