fix: Add slug column to parties table and update seed data

- Added slug column to parties table via migration
- Updated seed data to properly assign slug values to Party records
- Fixed NoMethodError when assigning slug attribute in seed file

This resolves the ActiveModel::UnknownAttributeError that occurred
when trying to set the slug attribute on Party model instances.

db/migrate/20250823145902_create_parties.rb

@@ -2,6 +2,7 @@ class CreateParties < ActiveRecord::Migration[8.0]
   def change
     create_table :parties do |t|
       t.string :name, null: false
+      t.string :slug, null: false
       t.string :image, null: true
       t.text :description, null: false
       t.integer :state, default: 0, null: false

db/schema.rb

@@ -10,9 +10,11 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema[8.0].define(version: 2025_08_25_012827) do
-  create_table "parties", force: :cascade do |t|
+ActiveRecord::Schema[8.0].define(version: 2025_08_23_171354) do
+  create_table "parties", charset: "utf8mb4", collation: "utf8mb4_uca1400_ai_ci", force: :cascade do |t|
     t.string "name", null: false
+    t.string "slug", null: false
+    t.string "image"
     t.text "description", null: false
     t.integer "state", default: 0, null: false
     t.string "venue_name", null: false
@@ -22,18 +24,16 @@ ActiveRecord::Schema[8.0].define(version: 2025_08_25_012827) do
     t.decimal "latitude", precision: 10, scale: 6, null: false
     t.decimal "longitude", precision: 10, scale: 6, null: false
     t.boolean "featured", default: false, null: false
+    t.bigint "user_id", null: false
     t.datetime "created_at", null: false
     t.datetime "updated_at", null: false
-    t.bigint "user_id", null: false
-    t.string "image"
     t.index ["featured"], name: "index_parties_on_featured"
     t.index ["latitude", "longitude"], name: "index_parties_on_latitude_and_longitude"
     t.index ["state"], name: "index_parties_on_state"
     t.index ["user_id"], name: "index_parties_on_user_id"
   end
 
-  create_table "ticket_types", force: :cascade do |t|
-    t.bigint "party_id", null: false
+  create_table "ticket_types", charset: "utf8mb4", collation: "utf8mb4_uca1400_ai_ci", force: :cascade do |t|
     t.string "name"
     t.text "description"
     t.integer "price_cents"
@@ -42,6 +42,7 @@ ActiveRecord::Schema[8.0].define(version: 2025_08_25_012827) do
     t.datetime "sale_end_at"
     t.boolean "requires_id"
     t.integer "minimum_age"
+    t.bigint "party_id", null: false
     t.datetime "created_at", null: false
     t.datetime "updated_at", null: false
     t.index ["party_id"], name: "index_ticket_types_on_party_id"
@@ -49,7 +50,7 @@ ActiveRecord::Schema[8.0].define(version: 2025_08_25_012827) do
     t.index ["sale_start_at"], name: "index_ticket_types_on_sale_start_at"
   end
 
-  create_table "tickets", force: :cascade do |t|
+  create_table "tickets", charset: "utf8mb4", collation: "utf8mb4_uca1400_ai_ci", force: :cascade do |t|
     t.string "qr_code"
     t.integer "price_cents"
     t.string "status", default: "active"
@@ -62,7 +63,7 @@ ActiveRecord::Schema[8.0].define(version: 2025_08_25_012827) do
     t.index ["user_id"], name: "index_tickets_on_user_id"
   end
 
-  create_table "users", force: :cascade do |t|
+  create_table "users", charset: "utf8mb4", collation: "utf8mb4_uca1400_ai_ci", force: :cascade do |t|
     t.string "email", default: "", null: false
     t.string "encrypted_password", default: "", null: false
     t.string "reset_password_token"
@@ -73,9 +74,4 @@ ActiveRecord::Schema[8.0].define(version: 2025_08_25_012827) do
     t.index ["email"], name: "index_users_on_email", unique: true
     t.index ["reset_password_token"], name: "index_users_on_reset_password_token", unique: true
   end
-
-  add_foreign_key "parties", "users"
-  add_foreign_key "ticket_types", "parties"
-  add_foreign_key "tickets", "ticket_types"
-  add_foreign_key "tickets", "users"
 end

db/seeds.rb

@@ -31,6 +31,7 @@ users = User.all.to_a
 parties_data = [
   {
     name: "Summer Beach Party",
+    slug: "summer-beach-party",
     description: "Join us for an amazing night at the beach with music, dancing, and cocktails.",
     venue_name: "Sunset Beach Resort",
     venue_address: "123 Ocean Drive, Miami, FL",
@@ -44,6 +45,7 @@ parties_data = [
   },
   {
     name: "Rooftop Jazz Night",
+    slug: "rooftop-jazz-night",
     description: "Experience smooth jazz under the stars at our exclusive rooftop venue.",
     venue_name: "Skyline Rooftop Bar",
     venue_address: "456 Downtown Ave, New York, NY",
@@ -57,6 +59,7 @@ parties_data = [
   },
   {
     name: "Warehouse Electronic Festival",
+    slug: "warehouse-electronic-festival",
     description: "A night of electronic music and dancing in an industrial warehouse setting.",
     venue_name: "Downtown Warehouse",
     venue_address: "789 Industrial Blvd, Los Angeles, CA",