Module: TapIf

Defined in:
lib/tap_if.rb

Instance Method Summary collapse

Instance Method Details

#tap_if(*args) {|_self| ... } ⇒ Object

Executes the given block if the ‘caller` is truthy or given the `method name + args` evaluate to

a truthy value.

Useful for clarity - always return the caller but only

execute the block when the condition passes.

Update the user’s account token if the user is an admin of the account.

User.find(user_id).tap_if(:admin?, account) do |user|

user.update_token()

end

Only update twitter/facebook if the post actually publishes.

def publish

(post.pending? && post.update_attributes(:published => true)).tap_if do
  the_update = "New blog post: #{post.title[0..100]}... #{post.link}"

  Twitter.update(the_update)
  Facebook.update(the_update)
end

end

Yields:

  • (_self)

Yield Parameters:

  • _self (TapIf) —

    the object that the method was called on



25
26
27
28
29
 
# File 'lib/tap_if.rb', line 25

def tap_if(*args)
  yield self if (args.empty? && self || args.any? && respond_to?(args.first) && send(*args))

  self
end