fix (table): Table should be cascade if package is deleted

Author: sagargg

ckanext/versions/migration/versions/versions/908a228d3f7a.py

@@ -25,7 +25,7 @@ def upgrade():
     op.create_table(
         "package_version",
         sa.Column("id", UuidType, primary_key=True),
-        sa.Column("package_id", UuidType, sa.ForeignKey("package.id"), nullable=False),
+        sa.Column("package_id", UuidType, sa.ForeignKey("package.id", ondelete="CASCADE"), nullable=False),
         sa.Column("name", sa.Unicode, nullable=False),
         sa.Column("notes", sa.Unicode, nullable=True),
         sa.Column("data", JSONB, nullable=False),

ckanext/versions/model.py

@@ -28,7 +28,7 @@ class DatasetVersion(DomainObject.DomainObject, tk.BaseModel):
         Index("idx_package_version_name", "name", "created"),
     )
     id = Column(UuidType, primary_key=True, default=UuidType.default)
-    package_id = Column(UuidType, ForeignKey("package.id"), nullable=False)
+    package_id = Column(UuidType, ForeignKey("package.id", ondelete="CASCADE"), nullable=False)
     name = Column(Unicode, nullable=False)
     notes = Column(Unicode, nullable=True)
     data = Column(JSONB, nullable=False)