Add Hackathon#apac? as a temporary solution for #106

app/models/hackathon/regional.rb

@@ -35,6 +35,18 @@ def country
     ISO3166::Country[country_code]&.common_name
   end
 
+  # TODO: This method and the `apac` column is a temporary solution!
+  # The column contains the migrated `apac` boolean from Airtable. Newly created
+  # hackathons (after the migration) will have the `apac` column set to `nil`,
+  # where it uses on the Country gem to determine if the hackathon is in APAC.
+  #
+  # See https://github.com/hackclub/hackathons-backend/issues/106
+  def apac?
+    return apac unless apac.nil?
+
+    ISO3166::Country[country_code]&.world_region == "APAC"
+  end
+
   def to_location
     Location.new(city, province, country_code)
   end

app/views/api/hackathons/_hackathon.json.v1.jbuilder

@@ -18,4 +18,7 @@ shape_for hackathon, json do
     json.longitude hackathon.longitude
     json.latitude hackathon.latitude
   end
+
+  # This is temporary! See `Hackathon.apac?` for more info.
+  json.apac hackathon.apac?
 end

db/migrate/20230814030407_add_apac_to_hackathon.rb

@@ -0,0 +1,5 @@
+class AddApacToHackathon < ActiveRecord::Migration[7.0]
+  def change
+    add_column :hackathons, :apac, :boolean
+  end
+end