Ruby On Rails: Mongoid get values of multiple fields as array

Question

My Detail model have fields like:

email1,email2,email3

How do I get all the values, of a particular record, of these fields at once.
Something like:

detail = Detail.find(id)
output = detail.only(:email1,:email2,email3)  

=> ["email1","email2","email3"]    #desired output.

How can I do this?

Zach Kemp · Accepted Answer · 2014-02-25 17:39:46Z

3

You can access the attributes as a hash and call values_at with multiple arguments:

detail.attributes.values_at('email1', 'email2', 'email3')
#=> [...]

One caveat is that the keys are stored as strings, so you'll need to convert your symbols first.

answered Feb 25, 2014 at 17:39

Zach Kemp

11.9k1 gold badge35 silver badges47 bronze badges

Sign up to request clarification or add additional context in comments.

4 Comments

what if few of them are nil?

email1,email2,email3 and so on

The keys or the values?

the value. okay. find out myself. it's returning empty string.