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20 lines
521 B
Markdown
20 lines
521 B
Markdown
# Retrieve An Object If It Exists
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Rails' Active Support provides the `blank?` and `present?` convenience
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methods as extensions to many objects. It also extends the Object class by
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providing the [`presence`](http://api.rubyonrails.org/classes/Object.html#method-i-presence)
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method. This method returns the *receiver* if it is not blank, otherwise
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it returns nil.
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Instead of doing
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```ruby
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User.nickname.present? ? User.nickname : User.firstname
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```
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I can simply do
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```ruby
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User.nickname.presence || User.firstname
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```
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