initial alembic revision

followed article here for guidance: https://arunanshub.hashnode.dev/using-sqlmodel-with-alembic#heading-sql-constraint-naming-convention

mirrored on my readeck: https://readeck.yuno.jack-case.pro/bookmarks/9ay79PHux348cgQBnA86UC

slopserver/alembic/README

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+Generic single-database configuration.

slopserver/alembic/env.py

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+from logging.config import fileConfig
+
+from sqlalchemy import engine_from_config
+from sqlalchemy import pool
+
+from alembic import context
+
+# this is the Alembic Config object, which provides
+# access to the values within the .ini file in use.
+config = context.config
+
+# Interpret the config file for Python logging.
+# This line sets up loggers basically.
+if config.config_file_name is not None:
+    fileConfig(config.config_file_name)
+
+# add your model's MetaData object here
+# for 'autogenerate' support
+# from myapp import mymodel
+# target_metadata = mymodel.Base.metadata
+from slopserver.models import metadata
+target_metadata = metadata
+
+# 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.
+
+
+def run_migrations_offline() -> None:
+    """Run migrations in 'offline' mode.
+
+    This configures the context with just a URL
+    and not an Engine, though an Engine is acceptable
+    here as well.  By skipping the Engine creation
+    we don't even need a DBAPI to be available.
+
+    Calls to context.execute() here emit the given string to the
+    script output.
+
+    """
+    url = config.get_main_option("sqlalchemy.url")
+    context.configure(
+        url=url,
+        target_metadata=target_metadata,
+        literal_binds=True,
+        dialect_opts={"paramstyle": "named"},
+    )
+
+    with context.begin_transaction():
+        context.run_migrations()
+
+
+def run_migrations_online() -> None:
+    """Run migrations in 'online' mode.
+
+    In this scenario we need to create an Engine
+    and associate a connection with the context.
+
+    """
+    connectable = engine_from_config(
+        config.get_section(config.config_ini_section, {}),
+        prefix="sqlalchemy.",
+        poolclass=pool.NullPool,
+    )
+
+    with connectable.connect() as connection:
+        context.configure(
+            connection=connection, target_metadata=target_metadata,
+            user_module_prefix="sqlmodel.sql.sqltypes."
+        )
+
+        with context.begin_transaction():
+            context.run_migrations()
+
+
+if context.is_offline_mode():
+    run_migrations_offline()
+else:
+    run_migrations_online()

slopserver/alembic/script.py.mako

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+"""${message}
+
+Revision ID: ${up_revision}
+Revises: ${down_revision | comma,n}
+Create Date: ${create_date}
+
+"""
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+import sqlmodel.sql.sqltypes
+${imports if imports else ""}
+
+# revision identifiers, used by Alembic.
+revision: str = ${repr(up_revision)}
+down_revision: Union[str, Sequence[str], None] = ${repr(down_revision)}
+branch_labels: Union[str, Sequence[str], None] = ${repr(branch_labels)}
+depends_on: Union[str, Sequence[str], None] = ${repr(depends_on)}
+
+
+def upgrade() -> None:
+    """Upgrade schema."""
+    ${upgrades if upgrades else "pass"}
+
+
+def downgrade() -> None:
+    """Downgrade schema."""
+    ${downgrades if downgrades else "pass"}

slopserver/alembic/versions/72dcd047d7bf_initial.py

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+"""initial
+
+Revision ID: 72dcd047d7bf
+Revises: 
+Create Date: 2025-10-17 20:10:04.230321
+
+"""
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+import sqlmodel.sql.sqltypes
+
+
+# revision identifiers, used by Alembic.
+revision: str = '72dcd047d7bf'
+down_revision: Union[str, Sequence[str], None] = None
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    """Upgrade schema."""
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.create_table('domain',
+    sa.Column('id', sa.Integer(), nullable=False),
+    sa.Column('domain_name', sqlmodel.sql.sqltypes.AutoString(), nullable=False),
+    sa.PrimaryKeyConstraint('id', name=op.f('pk_domain'))
+    )
+    op.create_index(op.f('ix_domain_domain_name'), 'domain', ['domain_name'], unique=True)
+    op.create_table('path',
+    sa.Column('id', sa.Integer(), nullable=False),
+    sa.Column('path', sqlmodel.sql.sqltypes.AutoString(), nullable=False),
+    sa.Column('domain_id', sa.Integer(), nullable=False),
+    sa.ForeignKeyConstraint(['domain_id'], ['domain.id'], name=op.f('fk_path_domain_id_domain')),
+    sa.PrimaryKeyConstraint('id', name=op.f('pk_path'))
+    )
+    # ### end Alembic commands ###
+
+
+def downgrade() -> None:
+    """Downgrade schema."""
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_table('path')
+    op.drop_index(op.f('ix_domain_domain_name'), table_name='domain')
+    op.drop_table('domain')
+    # ### end Alembic commands ###

slopserver/models.py

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+from sqlmodel import Field, SQLModel, create_engine, Relationship
+
+NAMING_CONVENTION = {
+    "ix": "ix_%(column_0_label)s",
+    "uq": "uq_%(table_name)s_%(column_0_name)s",
+    "ck": "ck_%(table_name)s_%(constraint_name)s",
+    "fk": "fk_%(table_name)s_%(column_0_name)s_%(referred_table_name)s",
+    "pk": "pk_%(table_name)s",
+}
+
+metadata = SQLModel.metadata
+metadata.naming_convention = NAMING_CONVENTION
+
+class Domain(SQLModel, table=True):
+    id: int | None = Field(default=None, primary_key=True)
+    domain_name: str = Field(index=True, unique=True)
+
+    paths: list["Path"] = Relationship(back_populates="domain")
+
+class Path(SQLModel, table=True):
+    id: int | None = Field(default=None, primary_key=True)
+    path: str
+    
+    domain_id: int = Field(foreign_key="domain.id")
+    domain: Domain = Relationship(back_populates="paths")