Add Alembic migration for users and answer_options table

alembic/versions/a49468686ff3_add_answers_and_users_tables.py

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+"""Add answers and users tables
+
+Revision ID: a49468686ff3
+Revises: d2e4b673963c
+Create Date: 2023-12-28 17:08:12.949559
+
+"""
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision: str = 'a49468686ff3'
+down_revision: Union[str, None] = 'd2e4b673963c'
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.create_table('users',
+    sa.Column('username', sa.String(length=64), nullable=False),
+    sa.Column('email', sa.String(length=64), nullable=False),
+    sa.Column('password_hash', sa.String(), nullable=False),
+    sa.Column('created_at', sa.DateTime(timezone=True), server_default=sa.func.current_timestamp(), nullable=False),
+    sa.Column('id', sa.Integer(), nullable=False),
+    sa.PrimaryKeyConstraint('id')
+    )
+    op.create_index(op.f('ix_users_email'), 'users', ['email'], unique=True)
+    op.create_index(op.f('ix_users_username'), 'users', ['username'], unique=True)
+    op.create_table('answer_options',
+    sa.Column('question_id', sa.Integer(), nullable=False),
+    sa.Column('content', sa.String(length=256), nullable=False),
+    sa.Column('is_correct', sa.Boolean(), nullable=False),
+    sa.Column('id', sa.Integer(), nullable=False),
+    sa.ForeignKeyConstraint(['question_id'], ['questions.id'], ),
+    sa.PrimaryKeyConstraint('id')
+    )
+    op.add_column('quizzes', sa.Column('created_by', sa.Integer(), nullable=False))
+    op.create_foreign_key(None, 'quizzes', 'users', ['created_by'], ['id'])
+    # ### end Alembic commands ###
+
+
+def downgrade() -> None:
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_constraint(None, 'quizzes', type_='foreignkey')
+    op.drop_column('quizzes', 'created_by')
+    op.drop_table('answer_options')
+    op.drop_index(op.f('ix_users_username'), table_name='users')
+    op.drop_index(op.f('ix_users_email'), table_name='users')
+    op.drop_table('users')
+    # ### end Alembic commands ###