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fix(relations): allow deleting transaction when relation exists

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Lukáš Trkan
2025-10-30 13:49:29 +01:00
parent 356e1d868c
commit 912697b046
3 changed files with 49 additions and 3 deletions
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46
7project/backend/alembic/versions/2025_10_30_1342-59cebf320c4a_cascade_categories.py Normal file
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@@ -0,0 +1,46 @@
"""Cascade categories
Revision ID: 59cebf320c4a
Revises: 46b9e702e83f
Create Date: 2025-10-30 13:42:44.555284
"""
from typing import Sequence, Union
from alembic import op
import sqlalchemy as sa
from sqlalchemy.dialects import mysql
# revision identifiers, used by Alembic.
revision: str = '59cebf320c4a'
down_revision: Union[str, Sequence[str], None] = '46b9e702e83f'
branch_labels: Union[str, Sequence[str], None] = None
depends_on: Union[str, Sequence[str], None] = None
def upgrade() -> None:
"""Upgrade schema."""
# ### commands auto generated by Alembic - please adjust! ###
op.add_column('category_transaction', sa.Column('category_id', sa.Integer(), nullable=False))
op.add_column('category_transaction', sa.Column('transaction_id', sa.Integer(), nullable=False))
op.drop_constraint(op.f('category_transaction_ibfk_2'), 'category_transaction', type_='foreignkey')
op.drop_constraint(op.f('category_transaction_ibfk_1'), 'category_transaction', type_='foreignkey')
op.create_foreign_key(None, 'category_transaction', 'transaction', ['transaction_id'], ['id'], ondelete='CASCADE')
op.create_foreign_key(None, 'category_transaction', 'categories', ['category_id'], ['id'], ondelete='CASCADE')
op.drop_column('category_transaction', 'id_category')
op.drop_column('category_transaction', 'id_transaction')
# ### end Alembic commands ###
def downgrade() -> None:
"""Downgrade schema."""
# ### commands auto generated by Alembic - please adjust! ###
op.add_column('category_transaction', sa.Column('id_transaction', mysql.INTEGER(display_width=11), autoincrement=False, nullable=True))
op.add_column('category_transaction', sa.Column('id_category', mysql.INTEGER(display_width=11), autoincrement=False, nullable=True))
op.drop_constraint(None, 'category_transaction', type_='foreignkey')
op.drop_constraint(None, 'category_transaction', type_='foreignkey')
op.create_foreign_key(op.f('category_transaction_ibfk_1'), 'category_transaction', 'categories', ['id_category'], ['id'])
op.create_foreign_key(op.f('category_transaction_ibfk_2'), 'category_transaction', 'transaction', ['id_transaction'], ['id'])
op.drop_column('category_transaction', 'transaction_id')
op.drop_column('category_transaction', 'category_id')
# ### end Alembic commands ###

4
7project/backend/app/models/categories.py
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@@ -7,8 +7,8 @@ from app.core.base import Base
association_table = Table(
"category_transaction",
Base.metadata,
Column("id_category", Integer, ForeignKey("categories.id")),
Column("id_transaction", Integer, ForeignKey("transaction.id"))
Column("category_id", Integer, ForeignKey("categories.id", ondelete="CASCADE"), primary_key=True),
Column("transaction_id", Integer, ForeignKey("transaction.id", ondelete="CASCADE"), primary_key=True)
)

2
7project/backend/app/models/transaction.py
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@@ -21,4 +21,4 @@ class Transaction(Base):
# Relationship
user = relationship("User", back_populates="transactions")
categories = relationship("Category", secondary=association_table, back_populates="transactions")
categories = relationship("Category", secondary=association_table, back_populates="transactions", passive_deletes=True)