UMBRA/backend/alembic/versions/059_project_task_assignments.py
Kyle Pope bef856fd15 Add collaborative project sharing, task assignments, and delta polling
Enables multi-user project collaboration mirroring the shared calendar
pattern. Includes ProjectMember model with permission levels, task
assignment with auto-membership, optimistic locking, field allowlist
for assignees, disconnect cascade, delta polling for projects and
calendars, and full frontend integration with share sheet, assignment
picker, permission gating, and notification handling.

Migrations: 057 (indexes + version + comment user_id), 058
(project_members), 059 (project_task_assignments)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
2026-03-17 03:18:35 +08:00

36 lines
1.3 KiB
Python

"""add project_task_assignments table
Revision ID: 059
Revises: 058
Create Date: 2025-01-01 00:00:00.000000
"""
from alembic import op
import sqlalchemy as sa
# revision identifiers, used by Alembic.
revision = "059"
down_revision = "058"
branch_labels = None
depends_on = None
def upgrade() -> None:
op.create_table(
"project_task_assignments",
sa.Column("id", sa.Integer(), primary_key=True, autoincrement=True),
sa.Column("task_id", sa.Integer(), sa.ForeignKey("project_tasks.id", ondelete="CASCADE"), nullable=False),
sa.Column("user_id", sa.Integer(), sa.ForeignKey("users.id", ondelete="CASCADE"), nullable=False),
sa.Column("assigned_by", sa.Integer(), sa.ForeignKey("users.id", ondelete="CASCADE"), nullable=False),
sa.Column("created_at", sa.DateTime(), server_default=sa.func.now()),
sa.UniqueConstraint("task_id", "user_id", name="uq_task_assignments_task_user"),
)
op.create_index("ix_task_assignments_task_id", "project_task_assignments", ["task_id"])
op.create_index("ix_task_assignments_user_id", "project_task_assignments", ["user_id"])
def downgrade() -> None:
op.drop_index("ix_task_assignments_user_id", table_name="project_task_assignments")
op.drop_index("ix_task_assignments_task_id", table_name="project_task_assignments")
op.drop_table("project_task_assignments")