Rails pg jsonb column search method

your_model.rb

# heading jsonb cloumn, and title a field inside jsonb search in jsonb
# heading: { title: "ABC" }
# For detail look at http://edgeguides.rubyonrails.org/active_record_postgresql.html#json-and-jsonb
def self.search(search)
  q = "%#{search.downcase}%"
  where("lower(heading ->> 'title') LIKE ?", q) 
end