How can I implement custom exceptions in Rails?

How can I implement custom exceptions in Rails?

You can create custom exceptions in Rails by defining a new class that inherits from the standard Error class.

Can you show me an example of a custom exception?

Sure! Here's a simple example:

class MyCustomError < StandardError
end

How do I raise this custom exception?

You can raise it using the raise keyword like this:

raise MyCustomError, 'Something went wrong!'

How can I handle this exception in my controller?

You can use a rescue block in your controller action to handle the exception:

begin
  # code that might raise an exception
rescue MyCustomError => e
  # handle the exception
end