Listing all object methods in Ruby-on-Rails: A comprehensive guide

As a Ruby-on-Rails developer, it's important to have a complete understanding of the methods available for any given object. In this comprehensive guide, I will cover various methods to list all object methods in Ruby-on-Rails.

Method 1: Using the methods Method

The first method to list all object methods is to use the "methods" method. This method returns an array of all public and protected methods of the object. Here's an example:

class MyClass
  def method1
    puts "This is method 1"
  end

  def method2
    puts "This is method 2"
  end
end

obj = MyClass.new

puts obj.methods

The above code will output an array of all public and protected methods of the "obj" object. You can also pass "false" as an argument to this method to exclude inherited methods:

puts obj.methods(false)

Method 2: Using the instance_methods Method

The second method to list all object methods is to use the "instance_methods" method. This method is similar to the "methods" method, but it returns an array of all public methods of the object's class. Here's an example:

puts MyClass.instance_methods

The above code will output an array of all public methods of the "MyClass" class.

Method 3: Using the instance_methods(false) Method

The third method to list all object methods is to use the "instance_methods(false)" method. This method is similar to the "instance_methods" method, but it returns an array of all public instance methods of the object's class, excluding inherited methods. Here's an example:

puts MyClass.instance_methods(false)

The above code will output an array of all public instance methods of the "MyClass" class, excluding inherited methods.

Method 4: Using the Method Method

The fourth method to list all object methods is to use the "Method" method. This method returns a Method object that represents the named instance method in the object's class. Here's an example:

method = obj.method(:method1)
puts method.name

The above code will output the name of the "method1" method.

Conclusion

These are some of the methods to list all object methods in Ruby-on-Rails. By using these methods, you can gain a better understanding of the methods available for any given object, which can help you write more efficient and effective code.