Why hooks enable framework building in Ruby - Test Your Understanding

Practice - 5 Tasks

1fill in blank

easy

Complete the code to define a hook method that can be overridden.

Ruby

def [1]
  # default behavior
end

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Ahook_method

Brun

Cinitialize

Dexecute

Attempts:

3 left

💡 Hint

Common Mistakes

Using a method name that is too specific or already reserved.

Not defining a method at all.

The method hook_method is a placeholder that can be overridden by subclasses or users to customize behavior.

2fill in blank

medium

Complete the code to call the hook method inside another method.

Ruby

def perform
  puts 'Starting task'
  [1]
  puts 'Task finished'
end

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Aexecute_hook

Brun_hook

Chook_method

Dstart_hook

Attempts:

3 left

💡 Hint

Common Mistakes

Calling a method that is not defined.

Forgetting to call the hook method.

The perform method calls hook_method to allow customization during execution.

3fill in blank

hard

Fix the error in the subclass to override the hook method correctly.

Ruby

class CustomTask < BaseTask
  def [1]
    puts 'Custom behavior'
  end
end

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Aperform

Brun

Cinitialize

Dhook_method

Attempts:

3 left

💡 Hint

Common Mistakes

Overriding the wrong method name.

Not overriding the hook method at all.

Overriding hook_method in the subclass allows custom behavior during perform.

4fill in blank

hard

Fill both blanks to define a base class with a hook and a method that calls it.

Ruby

class BaseTask
  def [1]
    # default hook
  end

  def [2]
    puts 'Begin'
    [1]
    puts 'End'
  end
end

Drag options to blanks, or click blank then click option'

Ahook_method

Bperform

Cexecute

Drun

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing up method names.

Not calling the hook inside the action method.

The base class defines hook_method as the hook and perform to call it.

5fill in blank

hard

Fill all three blanks to create a subclass that overrides the hook and runs the task.

Ruby

class CustomTask < BaseTask
  def [1]
    puts 'Custom action'
  end
end

task = CustomTask.new
[2]
task.[3]

Drag options to blanks, or click blank then click option'

Ahook_method

Btask

Cperform

Dnew

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong method names.

Not creating an instance before calling perform.

The subclass overrides hook_method. We create an instance task and call perform to run it.