Add not null constraint to email and crypted password

Author: experimatt

db/migrate/20250313020004_add_not_null_constraints_to_participants.rb

@@ -0,0 +1,15 @@
+class AddNotNullConstraintsToParticipants < ActiveRecord::Migration[7.1]
+  def change
+    # update any existing NULL values, just in case
+    Participant.where(email: nil).update_all(email: 'INVALID')
+    Participant.where(crypted_password: nil).update_all(crypted_password: 'INVALID')
+
+    change_column_null :participants, :email, false
+    change_column_null :participants, :crypted_password, false
+  end
+
+  def down
+    change_column_null :participants, :email, true
+    change_column_null :participants, :crypted_password, 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[7.1].define(version: 2025_03_09_183552) do
+ActiveRecord::Schema[7.1].define(version: 2025_03_13_020004) do
   create_schema "heroku_ext"
 
   # These are extensions that must be enabled in order to support this database
@@ -69,11 +69,11 @@
 
   create_table "participants", id: :serial, force: :cascade do |t|
     t.string "name", limit: 255
-    t.string "email", limit: 255
+    t.string "email", limit: 255, null: false
     t.text "bio"
     t.datetime "created_at", precision: nil, null: false
     t.datetime "updated_at", precision: nil, null: false
-    t.string "crypted_password", limit: 255
+    t.string "crypted_password", limit: 255, null: false
     t.string "persistence_token", limit: 255
     t.string "perishable_token", limit: 255, default: "", null: false
     t.datetime "email_confirmed_at", precision: nil