将ActiveRecord关系转换为特定键控哈希

Question

I have an ActiveRecord result set from the following query:

people = People.where(job_type: ["Job Type 1", "Job Type 2"])

This returns an AcitveRecord Relation.

I want to take people and convert it to a Hash where each key is the job_type and the value is an array of records that match that job_type .

The closest thing I found is people.as_json but that gives an array of hashes, not the format I'd like to work with.

What's an elegant Ruby way of converting the people data structure? Ideally it would look like:

my_hash = {"Job Type 1" => [record1, record2..], "Job Type 2" => [..]}

Answer 1

It looks like you want to group_by job_type . So, give this a go:

people = People.where(job_type: ["Job Type 1", "Job Type 2"]).group_by(&:job_type)