ruby on rails - Sort based on association's method -


i have method in business certified? method.

i sort quotation model using certified? method.

the return value of method boolean. sort it, have certified businesses on top of list.

here's association:

business belongs quotation

here's how now:

quotation.by_biz_id(biz.id).includes(:business).sort_by {|quote| quote.business.certified? <=> quote.business.certified? }

as can see there lots of method chaining in it. there newer , better way refactor code?

especially repeating condition: {|quote| quote.business.certified? <=> quote.business.certified?}

if remove <=> condition, error this:

argumenterror: comparison of falseclass true failed

you can use group_by instead of sorting like,

quotation.includes(:business).group_by |quote|   quote.business.certified? ? "certified" : "not_certified" end

it return hash containing keys certified values of certified business quotation , remaining in not_certified.


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