Add settings table

app/model.py

@@ -36,6 +36,35 @@ session = Session()
 
 
 # Database classes
+class Settings(Base):
+    __tablename__ = 'settings'
+
+    id = Column(Integer, primary_key=True, autoincrement=True)
+    name = Column(String(32), nullable=False, unique=True)
+    f_datetime = Column(DateTime, default=None, nullable=True)
+    f_int = Column(Integer, default=None, nullable=True)
+    f_string = Column(String(128), default=None, nullable=True)
+
+    @classmethod
+    def get_int(cls, name):
+        try:
+            int_setting = session.query(cls).filter(
+                cls.name == name).one()
+        except NoResultFound:
+            int_setting = Settings()
+            int_setting.name = name
+            int_setting.f_int = None
+            session.add(int_setting)
+            session.commit()
+        return int_setting
+
+    def update(self, data):
+        for key, value in data.items():
+            assert hasattr(self, key)
+            setattr(self, key, value)
+        session.commit()
+
+
 class Tracks(Base):
     __tablename__ = 'tracks'
 

migrations/env.py

@@ -1,3 +1,6 @@
+import sys
+import os
+
 from logging.config import fileConfig
 
 from sqlalchemy import engine_from_config
@@ -17,7 +20,11 @@ fileConfig(config.config_file_name)
 # for 'autogenerate' support
 # from myapp import mymodel
 # target_metadata = mymodel.Base.metadata
-from model import Base
+# https://stackoverflow.com/questions/32032940/how-to-import-the-own-model-into-myproject-alembic-env-py
+path = os.path.dirname(os.path.dirname(__file__))
+sys.path.insert(0, path)
+sys.path.insert(0, os.path.join(path, "app"))
+from app.model import Base
 target_metadata = Base.metadata
 # other values from the config, defined by the needs of env.py,
 # can be acquired:

migrations/versions/b0983648595e_add_settings_table.py

@@ -0,0 +1,36 @@
+"""Add settings table
+
+Revision ID: b0983648595e
+Revises: 1bc727e5e87f
+Create Date: 2021-03-26 13:33:41.994508
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = 'b0983648595e'
+down_revision = '1bc727e5e87f'
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.create_table('settings',
+    sa.Column('id', sa.Integer(), autoincrement=True, nullable=False),
+    sa.Column('name', sa.String(length=32), nullable=False),
+    sa.Column('f_datetime', sa.DateTime(), nullable=True),
+    sa.Column('f_int', sa.Integer(), nullable=True),
+    sa.Column('f_string', sa.String(length=128), nullable=True),
+    sa.PrimaryKeyConstraint('id'),
+    sa.UniqueConstraint('name')
+    )
+    # ### end Alembic commands ###
+
+
+def downgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_table('settings')
+    # ### end Alembic commands ###