call class method?

[frankie2000]

Do i have to create an object of a class before i can reach the methods?

I just tried this:
class Atest
def testmethod(qId)
p qId
end
end

call it like this:
Atest::testmethod(15)

But i get errors saying the method does not exist.

 

[Yeyinde]

You create a class using it's .new method, as seen here:

atest = Atest.new
atest.testmethod()

All objects have this method, so you don't need to create it.

 

[frankie2000]

You create a class using it's .new method, as seen here:

atest = Atest.new
atest.testmethod()

All objects have this method, so you don't need to create it.

"new" creates an object of a class. Not the class itself. From what i have read. You can pull methods from RGPXP other classes like:
RGP::method.

I would be very surprised if you can´t just call the methods from the class. Because in almost all languages you can do that.

 

[Yeyinde]

Okay. You want a class within a class or module. Take the RPG module, for example. RPG::Actor is the class that hold a database actor.

 

[frankie2000]

Okay. You want a class within a class or module. Take the RPG module, for example. RPG::Actor is the class that hold a database actor.

I replaced the "class" with the "module". But i can´t get it to work. I Call the method with the module::method but i get that the method does not exists.

 

[Daniel]

Just use "Class.new.method".

And to call a module's method from another class, the method has to be defined as "self.method_name". For example:

module Testing
  def self.test
    p("Testing!")
  end
end

class MyClass
  def initialize
    Testing.test
  end
end

 

[frankie2000]

Just use "Class.new.method".

And to call a module's method from another class, the method has to be defined as "self.method_name". For example:

module Testing
  def self.test
    p("Testing!")
  end
end

class MyClass
  def initialize
    Testing.test
  end
end

This is not for an acutal project. It´s my way of exploring the Ruby Game Scripting. And i must say i found it a little strange that you have to create an object of a class do reach another method.

It all comes down to that you HAVE to...sooner or later create an object.

Why i feel this is strange is because it´s not necessary in some cases. In all other languages i worked in you can call a class method whitout creating and object first.

Strange OOP methology. But i guess that RGSS is not the whole Ruby scripting but a modified version of Ruby Scripting.

Thanx for the answers. Now i know.

 

[Yeyinde]

You can use a module.

module Test
  def self.method(argument)
    p argument
  end
end
Test.method(15)  # Prints 15

 

[frankie2000]

You can use a module.

module Test
  def self.method(argument)
    p argument
  end
end
Test.method(15)  # Prints 15

Yeah, that was what i looked for. the "self" did it. And from what i can see there are no new objects created. Just a call to a class method whitout creating an object. Cool THANX!

 

[SephirothSpawn]

Its a module method, not a class method.

 

[frankie2000]

Its a module method, not a class method.

Very true. But it did the job. No objects created.

 

[Daniel]

Yeah, that was what i looked for. the "self" did it. And from what i can see there are no new objects created. Just a call to a class method whitout creating an object. Cool THANX!

You know I posted the exact same thing right?

And your original question was to call a class method, so I'm guessing you can't do that without creating an instance of the class.