Fix: Username unique index was case sensitive and this allowed duplicate names.

Feature: Moved temporal products into their own module and reverted the products module

barker/alembic/versions/0e326930b8a4_temporal_products_fixed.py

@@ -0,0 +1,46 @@
+"""temporal products fixed
+
+Revision ID: 0e326930b8a4
+Revises: 3609c44430c8
+Create Date: 2021-10-22 09:36:11.746119
+
+"""
+import sqlalchemy as sa
+
+from alembic import op
+from sqlalchemy import column, func, table, text
+from sqlalchemy.dialects import postgresql
+
+
+# revision identifiers, used by Alembic.
+revision = "0e326930b8a4"
+down_revision = "3609c44430c8"
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.create_unique_constraint(op.f("uq_vouchers_bill_id"), "vouchers", ["bill_id", "voucher_type"])
+
+    prod = table(
+        "product_versions",
+        column("id", postgresql.UUID(as_uuid=True)),
+        column("product_id", postgresql.UUID(as_uuid=True)),
+        column("valid_from", sa.Date()),
+        column("valid_till", sa.Date()),
+    )
+
+    op.create_exclude_constraint(
+        "uq_product_versions_product_id",
+        "product_versions",
+        (prod.c.product_id, "="),
+        (func.daterange(prod.c.valid_from, prod.c.valid_till, text("'[]'")), "&&"),
+    )
+    # ### end Alembic commands ###
+
+
+def downgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_constraint(op.f("uq_vouchers_bill_id"), "vouchers", type_="unique")
+    # ### end Alembic commands ###

barker/alembic/versions/3609c44430c8_user.py

@@ -0,0 +1,31 @@
+"""user
+
+Revision ID: 3609c44430c8
+Revises: 81d94c5223a7
+Create Date: 2021-09-28 09:18:10.666701
+
+"""
+import sqlalchemy as sa
+
+from alembic import op
+
+
+# revision identifiers, used by Alembic.
+revision = "3609c44430c8"
+down_revision = "81d94c5223a7"
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_constraint("uq_users_name", "users", type_="unique")
+    op.create_index("uq_users_name", "users", [sa.text("lower(name)")], unique=True)
+    # ### end Alembic commands ###
+
+
+def downgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_index("uq_users_name", table_name="users")
+    op.create_unique_constraint("uq_users_name", "users", ["name"])
+    # ### end Alembic commands ###