feat: Integrate Flask-Migrate as a Flask extension and update migration commands to use flask db.

app/__init__.py

@@ -4,7 +4,7 @@ load_dotenv()
 
 from flask import Flask
 from app.config import Config
-from app.extensions import db, login_manager
+from app.extensions import db, login_manager, migrate
 from app.utils import generate_google_maps_url
 
 def create_app(config_class=Config):
@@ -13,6 +13,7 @@ def create_app(config_class=Config):
 
     # Initialize Extensions
     db.init_app(app)
+    migrate.init_app(app, db)
     login_manager.init_app(app)
     login_manager.login_view = 'auth.login'
     login_manager.login_message = "Por favor, faça login para acessar esta página."

app/extensions.py

@@ -1,5 +1,7 @@
 from flask_sqlalchemy import SQLAlchemy
 from flask_login import LoginManager
+from flask_migrate import Migrate
 
 db = SQLAlchemy()
 login_manager = LoginManager()
+migrate = Migrate()

migrations/env.py

@@ -1,14 +1,9 @@
 import logging
 from logging.config import fileConfig
 
+from flask import current_app
+
 from alembic import context
-import os
-import sys
-
-# Adicione o diretório raiz do projeto ao sys.path para importar app
-sys.path.append(os.path.abspath(os.path.join(os.path.dirname(__file__), '..')))
-
-from app import db, User, Party, Guest # Importe db e seus modelos
 
 # this is the Alembic Config object, which provides
 # access to the values within the .ini file in use.
@@ -19,26 +14,41 @@ config = context.config
 fileConfig(config.config_file_name)
 logger = logging.getLogger('alembic.env')
 
+
+def get_engine():
+    try:
+        # this works with Flask-SQLAlchemy<3 and Alchemical
+        return current_app.extensions['migrate'].db.get_engine()
+    except (TypeError, AttributeError):
+        # this works with Flask-SQLAlchemy>=3
+        return current_app.extensions['migrate'].db.engine
+
+
+def get_engine_url():
+    try:
+        return get_engine().url.render_as_string(hide_password=False).replace(
+            '%', '%%')
+    except AttributeError:
+        return str(get_engine().url).replace('%', '%%')
+
+
 # add your model's MetaData object here
 # for 'autogenerate' support
-target_metadata = db.metadata
+# from myapp import mymodel
+# target_metadata = mymodel.Base.metadata
+config.set_main_option('sqlalchemy.url', get_engine_url())
+target_db = current_app.extensions['migrate'].db
 
 # other values from the config, defined by the needs of env.py,
 # can be acquired:
 # my_important_option = config.get_main_option("my_important_option")
 # ... etc.
 
-# Configura a URL do banco de dados diretamente da variável de ambiente
-DATABASE_URL = os.environ.get('DATABASE_URL')
-if not DATABASE_URL:
-    raise ValueError("A variável de ambiente 'DATABASE_URL' não foi definida. Ela é essencial para a conexão com o PostgreSQL.")
 
-# Algumas plataformas (como Heroku e versões mais antigas do Render) usam "postgres://"
-# enquanto o SQLAlchemy espera "postgresql://". Esta linha garante a compatibilidade.
-if DATABASE_URL.startswith("postgres://"):
-    DATABASE_URL = DATABASE_URL.replace("postgres://", "postgresql://", 1)
-
-config.set_main_option('sqlalchemy.url', DATABASE_URL)
+def get_metadata():
+    if hasattr(target_db, 'metadatas'):
+        return target_db.metadatas[None]
+    return target_db.metadata
 
 
 def run_migrations_offline():
@@ -55,10 +65,7 @@ def run_migrations_offline():
     """
     url = config.get_main_option("sqlalchemy.url")
     context.configure(
-        url=url,
-        target_metadata=target_metadata,
-        literal_binds=True,
-        dialect_opts={"paramstyle": "named"},
+        url=url, target_metadata=get_metadata(), literal_binds=True
     )
 
     with context.begin_transaction():
@@ -72,38 +79,35 @@ def run_migrations_online():
     and associate a connection with the context.
 
     """
-    from sqlalchemy import engine_from_config
-    from sqlalchemy import pool
 
-    connectable = engine_from_config(
-        config.get_section(config.config_ini_section),
-        prefix="sqlalchemy.",
-        poolclass=pool.NullPool,
-    )
+    # this callback is used to prevent an auto-migration from being generated
+    # when there are no changes to the schema
+    # reference: http://alembic.zzzcomputing.com/en/latest/cookbook.html
+    def process_revision_directives(context, revision, directives):
+        if getattr(config.cmd_opts, 'autogenerate', False):
+            script = directives[0]
+            if script.upgrade_ops.is_empty():
+                directives[:] = []
+                logger.info('No changes in schema detected.')
+
+    conf_args = current_app.extensions['migrate'].configure_args
+    if conf_args.get("process_revision_directives") is None:
+        conf_args["process_revision_directives"] = process_revision_directives
+
+    connectable = get_engine()
 
     with connectable.connect() as connection:
         context.configure(
             connection=connection,
-            target_metadata=target_metadata,
-            compare_type=True, # Importante para detectar mudanças de tipo
-            # this callback is used to prevent an auto-migration from being generated
-            # when there are no changes to the schema
-            # reference: http://alembic.zzzcomputing.com/en/latest/cookbook.html
-            process_revision_directives=process_revision_directives,
+            target_metadata=get_metadata(),
+            **conf_args
         )
 
         with context.begin_transaction():
             context.run_migrations()
 
-def process_revision_directives(context, revision, directives):
-    if getattr(config.cmd_opts, 'autogenerate', False):
-        script = directives[0]
-        if script.upgrade_ops.is_empty():
-            directives[:] = []
-            logger.info('No changes in schema detected.')
-
 
 if context.is_offline_mode():
     run_migrations_offline()
 else:
-    run_migrations_online()
+    run_migrations_online()

migrations/versions/091bc7ece679_reset_e_criação_inicial_das_tabelas.py

@@ -1,8 +1,8 @@
 """Reset e criação inicial das tabelas
 
-Revision ID: de7b1978faca
+Revision ID: 091bc7ece679
 Revises: 
-Create Date: 2025-07-07 03:10:24.781322
+Create Date: 2026-01-31 01:12:37.522590
 
 """
 from alembic import op
@@ -10,7 +10,7 @@ import sqlalchemy as sa
 
 
 # revision identifiers, used by Alembic.
-revision = 'de7b1978faca'
+revision = '091bc7ece679'
 down_revision = None
 branch_labels = None
 depends_on = None

reset_database.sh

@@ -75,16 +75,16 @@ check_success "Limpeza do Banco de Dados"
 # --- PASSO 2: CRIAR MIGRAÇÕES ---
 echo -e "\n${GREEN}--> PASSO 2: Criando um novo histórico de migrações...${NC}"
 
-echo "Executando: python manage.py db init"
-python manage.py db init
+echo "Executando: flask db init"
+flask db init
 check_success "'db init'"
 
-echo "Executando: python manage.py db migrate"
-python manage.py db migrate -m "Reset e criação inicial das tabelas"
+echo "Executando: flask db migrate"
+flask db migrate -m "Reset e criação inicial das tabelas"
 check_success "'db migrate'"
 
-echo "Executando: python manage.py db upgrade"
-python manage.py db upgrade
+echo "Executando: flask db upgrade"
+flask db upgrade
 check_success "'db upgrade'"