CODEWITHSUNDEEP
ruby
randombits
randombits

Reputation: 48500

Turn an array of Active Record objects into a hash

I have an array of Active Record objects. I'd like to create a hash that serves as an index. My Active Record objects have the properties name and value.

Ideally I'd like to iterate over the array and create a hash that will create something similar to:

hash[name] = value

What's the best way to create an array foo to create a hash similar to the one above?

Upvotes: 4

Views: 55

Answers (2)

tompave
tompave

Reputation: 12427

You can use the method Hash::[].

relation = Record.where("query")

Hash[
  relation.to_a.map do |obj|
    [obj.name, obj.value]
  end
]

Upvotes: 0

ddavison
ddavison

Reputation: 29092

Something like this would work:

hash = {}
Model.all.map { |i| hash[i.id] = i }

hash should then evaluate to:

{
  :1 => #<ActiveRecord:1>,
  :2 => #<ActiveRecord:2>,
  ...
}

Upvotes: 2

Related Questions