Get keys of activerecord

Question

I've got an active record to which I want to collect its keys in a seperate array

So if my @item.first has

item.a = 1
item.b = 2
item.c = 3

I want to collect an array like [a => 1, b => 2, c => 3].

Is there a way to do this?

Answer 1

yes you can do it using as_json read this http://api.rubyonrails.org/classes/ActiveModel/Serializers/JSON.html#method-i-as_json

Answer 2

This can be done with attributes:

@item.first.attributes

And to select specific attributes you can filter with select as:

@item.first.attributes.select { |key| ['a', 'b', 'c'].include?(key) }