module TapIf

Public Instance Methods

tap_if(*args) { |self| ... } click to toggle source

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(account)

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

# 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