Non-follows allowed in lists

db/migrate/20200430154012_change_list_account_follow_nullable.rb

@@ -0,0 +1,5 @@
+class ChangeListAccountFollowNullable < ActiveRecord::Migration[5.2]
+  def change
+    change_column_null :list_accounts, :follow_id, true
+  end
+end

db/schema.rb

@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 2020_04_20_223346) do
+ActiveRecord::Schema.define(version: 2020_04_30_154012) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"