4b391fe54b
- Add User model with email-based authentication - Add Tag model with many-to-many relationship to todos - Add TodoTag junction table for todo-tag relationships - Enhance Todo model with priority levels (low, medium, high) - Add due_date field with datetime support - Add recurrence_pattern field for recurring todos - Add parent-child relationship for subtasks support - Create comprehensive alembic migration for all changes - Add proper indexes for performance optimization - Use Text type for todo descriptions - Implement proper SQLAlchemy relationships and foreign keys
110 lines
4.5 KiB
Python
110 lines
4.5 KiB
Python
"""Enhance todo features with categories, priorities, users, and subtasks
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Revision ID: 002
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Revises: 001
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Create Date: 2024-01-02 00:00:00.000000
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"""
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from alembic import op
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import sqlalchemy as sa
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# revision identifiers, used by Alembic.
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revision = '002'
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down_revision = '001'
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branch_labels = None
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depends_on = None
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def upgrade() -> None:
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# Create users table
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op.create_table('users',
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sa.Column('id', sa.Integer(), nullable=False),
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sa.Column('email', sa.String(), nullable=False),
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sa.Column('name', sa.String(), nullable=False),
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sa.Column('created_at', sa.DateTime(timezone=True), server_default=sa.text('(CURRENT_TIMESTAMP)'), nullable=True),
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sa.Column('updated_at', sa.DateTime(timezone=True), server_default=sa.text('(CURRENT_TIMESTAMP)'), nullable=True),
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sa.PrimaryKeyConstraint('id')
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)
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op.create_index(op.f('ix_users_id'), 'users', ['id'], unique=False)
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op.create_index(op.f('ix_users_email'), 'users', ['email'], unique=True)
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# Create tags table
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op.create_table('tags',
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sa.Column('id', sa.Integer(), nullable=False),
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sa.Column('name', sa.String(), nullable=False),
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sa.Column('color', sa.String(), nullable=True),
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sa.Column('created_at', sa.DateTime(timezone=True), server_default=sa.text('(CURRENT_TIMESTAMP)'), nullable=True),
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sa.PrimaryKeyConstraint('id')
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)
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op.create_index(op.f('ix_tags_id'), 'tags', ['id'], unique=False)
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op.create_index(op.f('ix_tags_name'), 'tags', ['name'], unique=True)
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# Create todo_tags junction table
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op.create_table('todo_tags',
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sa.Column('todo_id', sa.Integer(), nullable=False),
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sa.Column('tag_id', sa.Integer(), nullable=False),
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sa.ForeignKeyConstraint(['tag_id'], ['tags.id'], ),
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sa.ForeignKeyConstraint(['todo_id'], ['todos.id'], ),
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sa.PrimaryKeyConstraint('todo_id', 'tag_id')
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)
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# Add new columns to todos table
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op.add_column('todos', sa.Column('priority', sa.Enum('LOW', 'MEDIUM', 'HIGH', name='prioritylevel'), server_default='MEDIUM', nullable=False))
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op.add_column('todos', sa.Column('due_date', sa.DateTime(timezone=True), nullable=True))
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op.add_column('todos', sa.Column('recurrence_pattern', sa.Enum('NONE', 'DAILY', 'WEEKLY', 'MONTHLY', 'YEARLY', name='recurrencepattern'), server_default='NONE', nullable=False))
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op.add_column('todos', sa.Column('user_id', sa.Integer(), nullable=False))
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op.add_column('todos', sa.Column('parent_id', sa.Integer(), nullable=True))
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# Change description column type to Text
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op.alter_column('todos', 'description',
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existing_type=sa.String(),
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type_=sa.Text(),
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existing_nullable=True)
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# Create foreign key constraints
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op.create_foreign_key('fk_todos_user_id', 'todos', 'users', ['user_id'], ['id'])
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op.create_foreign_key('fk_todos_parent_id', 'todos', 'todos', ['parent_id'], ['id'])
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# Create indexes for new columns
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op.create_index(op.f('ix_todos_priority'), 'todos', ['priority'], unique=False)
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op.create_index(op.f('ix_todos_due_date'), 'todos', ['due_date'], unique=False)
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op.create_index(op.f('ix_todos_user_id'), 'todos', ['user_id'], unique=False)
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op.create_index(op.f('ix_todos_parent_id'), 'todos', ['parent_id'], unique=False)
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def downgrade() -> None:
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# Drop indexes
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op.drop_index(op.f('ix_todos_parent_id'), table_name='todos')
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op.drop_index(op.f('ix_todos_user_id'), table_name='todos')
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op.drop_index(op.f('ix_todos_due_date'), table_name='todos')
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op.drop_index(op.f('ix_todos_priority'), table_name='todos')
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# Drop foreign key constraints
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op.drop_constraint('fk_todos_parent_id', 'todos', type_='foreignkey')
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op.drop_constraint('fk_todos_user_id', 'todos', type_='foreignkey')
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# Revert description column type back to String
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op.alter_column('todos', 'description',
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existing_type=sa.Text(),
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type_=sa.String(),
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existing_nullable=True)
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# Drop new columns from todos table
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op.drop_column('todos', 'parent_id')
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op.drop_column('todos', 'user_id')
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op.drop_column('todos', 'recurrence_pattern')
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op.drop_column('todos', 'due_date')
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op.drop_column('todos', 'priority')
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# Drop todo_tags table
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op.drop_table('todo_tags')
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# Drop tags table
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op.drop_index(op.f('ix_tags_name'), table_name='tags')
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op.drop_index(op.f('ix_tags_id'), table_name='tags')
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op.drop_table('tags')
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# Drop users table
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op.drop_index(op.f('ix_users_email'), table_name='users')
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op.drop_index(op.f('ix_users_id'), table_name='users')
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op.drop_table('users') |