Ruby - pass variable to eval method

Question

I have a variable which reference a method, I call the method with the eval keyword

a_test = "myvariable"
eval a_test
def myvariable
(...)
end

I would like to pass a variable to method, such as

def myvariable(var1)
(...)
end

Is anyone familiar with any "idiom" way of accomplishing this. Doing something like

eval a_test "string_test" 

will naturally fail since a lookup will be done by the interpreter for a function called "a_test"

• Naren Sisodiya: try this eval "#{a_test}('string_test')"
• Guilherme Bernal: Just to make it clean: myvariable in this case is not a variable.

Answer 1

This should work for you

def myvariable(foo)
 return "hello #{foo}"
end
a_test = "myvariable"
eval "puts #{a_test}('world')"
#=> hello world

---

In ruby though, it would be more appropriate to do something like this

def myvariable(foo)
 return "hello #{foo}"
end
a_test = "myvariable"
puts send(a_test, 'world')
#=> hello world

Read more about send