houdini/db/migrate/20181002160627_correct_dedications.rb

class CorrectDedications < ActiveRecord::Migration
  def up
    execute <<-SQL
    create or replace function is_valid_json(p_json text)
  returns boolean
as
$$
begin
  return (p_json::json is not null);
exception
  when others then
     return false;
end;
$$
language plpgsql
immutable;
    SQL

    dedications = MaintainDedications.retrieve_non_json_dedications

    MaintainDedications.create_json_dedications_from_plain_text(dedications)

    dedications = MaintainDedications.retrieve_json_dedications
    MaintainDedications.add_honor_to_any_json_dedications_without_type(dedications)
  end

  def down
  end
end