init

migrations/README

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+Generic single-database configuration.

migrations/env.py

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+from logging.config import fileConfig
+
+from alembic import context
+from sqlalchemy import engine_from_config, pool
+
+from learn_sql_model.models import Hero, Pet
+from sqlmodel import SQLModel
+
+# 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
+
+config = context.config
+fileConfig(config.config_file_name)
+
+# Model / Schema imports
+
+target_metadata = SQLModel.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.
+
+__all__ = ["Hero", "Pet"]
+
+
+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)
+
+        with context.begin_transaction():
+            context.run_migrations()
+
+
+if context.is_offline_mode():
+    run_migrations_offline()
+else:
+    run_migrations_online()

migrations/script.py.mako

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

migrations/versions/20da26039edf_name_the_pet.py

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+"""name the pet
+
+Revision ID: 20da26039edf
+Revises: 44fbe5f1a689
+Create Date: 2023-05-18 11:18:35.748333
+
+"""
+from alembic import op
+import sqlalchemy as sa
+import sqlmodel
+
+
+# revision identifiers, used by Alembic.
+revision = '20da26039edf'
+down_revision = '44fbe5f1a689'
+branch_labels = None
+depends_on = None
+
+
+def upgrade() -> None:
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_column('hero', 'new_attribute')
+    op.add_column('pet', sa.Column('name', sqlmodel.sql.sqltypes.AutoString(), nullable=False))
+    # ### end Alembic commands ###
+
+
+def downgrade() -> None:
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_column('pet', 'name')
+    op.add_column('hero', sa.Column('new_attribute', sa.VARCHAR(), nullable=True))
+    # ### end Alembic commands ###

migrations/versions/29ab77485a4d_new_attribute.py

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+"""New Attribute
+
+Revision ID: 29ab77485a4d
+Revises: fe841f5746e5
+Create Date: 2023-05-18 11:09:53.112601
+
+"""
+from alembic import op
+import sqlalchemy as sa
+import sqlmodel
+
+
+# revision identifiers, used by Alembic.
+revision = '29ab77485a4d'
+down_revision = 'fe841f5746e5'
+branch_labels = None
+depends_on = None
+
+
+def upgrade() -> None:
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.add_column('hero', sa.Column('new_attribute', sqlmodel.sql.sqltypes.AutoString(), nullable=True))
+    # ### end Alembic commands ###
+
+
+def downgrade() -> None:
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_column('hero', 'new_attribute')
+    # ### end Alembic commands ###

migrations/versions/44fbe5f1a689_new.py

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+"""new
+
+Revision ID: 44fbe5f1a689
+Revises: 29ab77485a4d
+Create Date: 2023-05-18 11:17:08.071058
+
+"""
+from alembic import op
+import sqlalchemy as sa
+import sqlmodel
+
+
+# revision identifiers, used by Alembic.
+revision = '44fbe5f1a689'
+down_revision = '29ab77485a4d'
+branch_labels = None
+depends_on = None
+
+
+def upgrade() -> None:
+    # ### commands auto generated by Alembic - please adjust! ###
+    pass
+    # ### end Alembic commands ###
+
+
+def downgrade() -> None:
+    # ### commands auto generated by Alembic - please adjust! ###
+    pass
+    # ### end Alembic commands ###

migrations/versions/fe841f5746e5_initial_migration.py

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+"""Initial Migration
+
+Revision ID: fe841f5746e5
+Revises:
+Create Date: 2023-05-18 11:07:41.700265
+
+"""
+from alembic import op
+import sqlalchemy as sa
+import sqlmodel
+
+# revision identifiers, used by Alembic.
+revision = "fe841f5746e5"
+down_revision = None
+branch_labels = None
+depends_on = None
+
+
+def upgrade() -> None:
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.create_table(
+        "hero",
+        sa.Column("id", sa.Integer(), nullable=False),
+        sa.Column("name", sqlmodel.sql.sqltypes.AutoString(), nullable=False),
+        sa.Column("secret_name", sqlmodel.sql.sqltypes.AutoString(), nullable=False),
+        sa.Column("age", sa.Integer(), nullable=True),
+        sa.PrimaryKeyConstraint("id"),
+    )
+    op.create_table(
+        "pet",
+        sa.Column("id", sa.Integer(), nullable=False),
+        sa.PrimaryKeyConstraint("id"),
+    )
+    # ### end Alembic commands ###
+
+
+def downgrade() -> None:
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_table("pet")
+    op.drop_table("hero")
+    # ### end Alembic commands ###