Add custom fields + warranty plugin, rework settings into two-pane shell

Feature work from the 2026-07 session:

Settings IA
- Replace the flat 27-card settings hub with a persistent two-pane shell
  (SettingsLayout.vue): grouped, searchable left rail + content pane.
- Nest all settings/* routes under the shell via router post-processing;
  shared nav catalog in settingsNav.js. Group by asset class (PCs, Printers,
  Equipment, Network) so per-type settings stop scattering.

Custom fields (core)
- customfields + customfieldvalues tables (migration 7d14), CRUD API at
  /api/customfields, per-asset value get/save.
- Settings management page + reusable CustomFieldsSection (detail) and
  CustomFieldsInputs (form) wired into all four asset types.

Warranty (new plugin)
- plugins/warranty: warranties + warrantyassets (migration 7d15), derived
  coverage status, provider abstraction (manual now; Dell/Lenovo/HP stubs).
- API CRUD + per-asset panel + report buckets; WarrantyPanel on all four
  detail pages; Warranties management page; Warranty report + Reports card.
- Seed warranty.* permissions.

Printer drivers
- printerdrivers table (migration 7d13) linked to printer models; drivers now
  surface on the matching printer's detail page.

Other
- PCDetail rebalanced (Network + Status + Warranty + custom fields on the right).
- Rename PCs list "Features" column to "Remote Access"; fix badge hover underline.
- Drop equipment islocationonly field.
- Centralize asset-type label/route maps into utils/assetTypes.js.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

migrations/env.py

@@ -4,6 +4,27 @@ from logging.config import fileConfig
 from flask import current_app
 
 from alembic import context
+from sqlalchemy.ext.compiler import compiles
+from sqlalchemy.schema import CreateTable
+
+
+# Force every table the migrations create on MySQL to utf8mb4 + DYNAMIC row
+# format. Without this a fresh `flask db upgrade` inherits the server default
+# charset, so a box whose default is latin1 (common on older MySQL) silently
+# builds a latin1 schema that drifts from the utf8mb4 production target. The
+# DYNAMIC row format also keeps utf8mb4 indexes under the 767-byte prefix limit
+# on pre-5.7 InnoDB. Scoped to the mysql dialect so the SQLite test DB is
+# untouched.
+@compiles(CreateTable, "mysql")
+def _mysql_create_table_utf8mb4(element, compiler, **kw):
+    sql = compiler.visit_create_table(element, **kw)
+    if "CHARSET" not in sql.upper():
+        sql = sql.rstrip().rstrip(";")
+        sql += (
+            " ENGINE=InnoDB DEFAULT CHARSET=utf8mb4"
+            " COLLATE=utf8mb4_unicode_ci ROW_FORMAT=DYNAMIC"
+        )
+    return sql
 
 # this is the Alembic Config object, which provides
 # access to the values within the .ini file in use.

migrations/versions/7d02_widen_notification_employee_cols.py

@@ -0,0 +1,37 @@
+"""Widen notifications.employeesso / employeename to TEXT
+
+Recognition and recertification notifications comma-join every listed
+employee's SSO and name into a single column. VARCHAR(100) truncated the list
+at ~11 people, dropping names off the shopfloor grid. TEXT removes the cap.
+
+Revision ID: 7d02_widen_notification_employee_cols
+Revises: 7d01_dashboarddefaults
+Create Date: 2026-07-07
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+
+revision = '7d02_widen_notification_employee_cols'
+down_revision = '7d01_dashboarddefaults'
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    op.alter_column('notifications', 'employeesso',
+                    existing_type=sa.String(length=100), type_=sa.Text(),
+                    existing_nullable=True)
+    op.alter_column('notifications', 'employeename',
+                    existing_type=sa.String(length=100), type_=sa.Text(),
+                    existing_nullable=True)
+
+
+def downgrade():
+    op.alter_column('notifications', 'employeesso',
+                    existing_type=sa.Text(), type_=sa.String(length=100),
+                    existing_nullable=True)
+    op.alter_column('notifications', 'employeename',
+                    existing_type=sa.Text(), type_=sa.String(length=100),
+                    existing_nullable=True)

migrations/versions/7d03_notificationtype_expiry.py

@@ -0,0 +1,53 @@
+"""Per-type auto-expiry rule on notificationtypes
+
+Makes the shopfloor auto-expiry window configurable per notification type
+instead of hardcoding recognition (8 AM Eastern) and recertification (14 days)
+in the API. Adds:
+  expirymode   'none' | 'duration' | 'dailytime'
+  expirydays   days for 'duration'
+  expiryhour   hour (Eastern) for 'dailytime'
+  expiryminute minute (Eastern) for 'dailytime'
+
+Seeds the two existing rule-bearing types so behavior is unchanged:
+  Recognition (typecolor 'recognition')     -> dailytime 08:00 Eastern
+  Recertification (typecolor 'recertification') -> duration 14 days
+
+Revision ID: 7d03_notificationtype_expiry
+Revises: 7d02_widen_notification_employee_cols
+Create Date: 2026-07-08
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+
+revision = '7d03_notificationtype_expiry'
+down_revision = '7d02_widen_notification_employee_cols'
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    op.add_column('notificationtypes', sa.Column('expirymode', sa.String(length=20), nullable=True, server_default='none'))
+    op.add_column('notificationtypes', sa.Column('expirydays', sa.Integer(), nullable=True))
+    op.add_column('notificationtypes', sa.Column('expiryhour', sa.SmallInteger(), nullable=True))
+    op.add_column('notificationtypes', sa.Column('expiryminute', sa.SmallInteger(), nullable=True, server_default='0'))
+
+    # preserve current behavior for the two rule-bearing types
+    op.execute(
+        "UPDATE notificationtypes SET expirymode='dailytime', expiryhour=8, expiryminute=0 "
+        "WHERE typecolor='recognition'"
+    )
+    op.execute(
+        "UPDATE notificationtypes SET expirymode='duration', expirydays=14 "
+        "WHERE typecolor='recertification'"
+    )
+    # everything else: explicit 'none' (indefinite unless the creator sets an end time)
+    op.execute("UPDATE notificationtypes SET expirymode='none' WHERE expirymode IS NULL")
+
+
+def downgrade():
+    op.drop_column('notificationtypes', 'expiryminute')
+    op.drop_column('notificationtypes', 'expiryhour')
+    op.drop_column('notificationtypes', 'expirydays')
+    op.drop_column('notificationtypes', 'expirymode')

migrations/versions/7d04_notificationtype_display.py

@@ -0,0 +1,43 @@
+"""Add data-driven shopfloor display behavior to notification types
+
+Replaces the hardcoded recognition/training/recertification logic with per-type
+columns: split one card per employee, show employee photo, and the display
+style (standard rows / carousel / grid / banner). Seeds the built-in special
+types by their typecolor keyword.
+
+Revision ID: 7d04_notificationtype_display
+Revises: 7d03_notificationtype_expiry
+Create Date: 2026-07-08
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+
+revision = '7d04_notificationtype_display'
+down_revision = '7d03_notificationtype_expiry'
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    op.add_column('notificationtypes', sa.Column('splitperemployee', sa.Boolean(), nullable=True, server_default='0'))
+    op.add_column('notificationtypes', sa.Column('showemployeephoto', sa.Boolean(), nullable=True, server_default='0'))
+    op.add_column('notificationtypes', sa.Column('displaystyle', sa.String(length=20), nullable=True, server_default='standard'))
+
+    conn = op.get_bind()
+    conn.execute(sa.text(
+        "UPDATE notificationtypes SET splitperemployee=1, showemployeephoto=1, displaystyle='carousel' "
+        "WHERE typecolor='recognition'"))
+    conn.execute(sa.text(
+        "UPDATE notificationtypes SET splitperemployee=1, showemployeephoto=1, displaystyle='grid' "
+        "WHERE typecolor='recertification'"))
+    conn.execute(sa.text(
+        "UPDATE notificationtypes SET splitperemployee=1, showemployeephoto=1, displaystyle='carousel' "
+        "WHERE typecolor='training'"))
+
+
+def downgrade():
+    op.drop_column('notificationtypes', 'displaystyle')
+    op.drop_column('notificationtypes', 'showemployeephoto')
+    op.drop_column('notificationtypes', 'splitperemployee')

migrations/versions/7d05_pc_access_protocols.py

@@ -0,0 +1,76 @@
+"""PC access protocols: catalog + per-PC links, retire isvnc/iswinrm
+
+Adds an admin-managed protocol catalog (accessprotocols) and a per-PC link
+table (computeraccess). Seeds VNC/WinRM/RDP, migrates each PC's isvnc/iswinrm
+into computeraccess rows, then drops the two boolean columns.
+
+Revision ID: 7d05_pc_access_protocols
+Revises: 7d04_notificationtype_display
+Create Date: 2026-07-08
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+
+revision = '7d05_pc_access_protocols'
+down_revision = '7d04_notificationtype_display'
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    op.create_table(
+        'accessprotocols',
+        sa.Column('protocolid', sa.Integer(), primary_key=True),
+        sa.Column('name', sa.String(length=50), nullable=False),
+        sa.Column('scheme', sa.String(length=20), nullable=False),
+        sa.Column('defaultport', sa.Integer(), nullable=True),
+        sa.Column('linktemplate', sa.String(length=255), nullable=False),
+        sa.Column('isactive', sa.Boolean(), nullable=False, server_default='1'),
+        sa.UniqueConstraint('name', name='uq_accessprotocol_name'),
+    )
+    op.create_table(
+        'computeraccess',
+        sa.Column('id', sa.Integer(), primary_key=True),
+        sa.Column('computerid', sa.Integer(), nullable=False),
+        sa.Column('protocolid', sa.Integer(), nullable=False),
+        sa.Column('portoverride', sa.Integer(), nullable=True),
+        sa.Column('isactive', sa.Boolean(), nullable=False, server_default='1'),
+        sa.ForeignKeyConstraint(['computerid'], ['computers.computerid'], ondelete='CASCADE'),
+        sa.ForeignKeyConstraint(['protocolid'], ['accessprotocols.protocolid']),
+        sa.UniqueConstraint('computerid', 'protocolid', name='uq_computer_protocol'),
+    )
+    op.create_index('idx_compaccess_computer', 'computeraccess', ['computerid'])
+
+    conn = op.get_bind()
+    # Seed the protocol catalog. exec_driver_sql so the ':' / '{}' in the
+    # templates are not parsed as bind params.
+    conn.exec_driver_sql(
+        "INSERT INTO accessprotocols (name, scheme, defaultport, linktemplate, isactive) VALUES "
+        "('VNC','vnc',5900,'vnc://{host}:{port}',1),"
+        "('WinRM','https',5986,'https://{host}:{port}/wsman',1),"
+        "('RDP','rdp',3389,'rdp://{host}:{port}',1)"
+    )
+    # Migrate the old booleans into per-PC access rows.
+    conn.exec_driver_sql(
+        "INSERT INTO computeraccess (computerid, protocolid, isactive) "
+        "SELECT c.computerid, p.protocolid, 1 FROM computers c "
+        "JOIN accessprotocols p ON p.name='VNC' WHERE c.isvnc = 1"
+    )
+    conn.exec_driver_sql(
+        "INSERT INTO computeraccess (computerid, protocolid, isactive) "
+        "SELECT c.computerid, p.protocolid, 1 FROM computers c "
+        "JOIN accessprotocols p ON p.name='WinRM' WHERE c.iswinrm = 1"
+    )
+
+    op.drop_column('computers', 'isvnc')
+    op.drop_column('computers', 'iswinrm')
+
+
+def downgrade():
+    op.add_column('computers', sa.Column('iswinrm', sa.Boolean(), nullable=True))
+    op.add_column('computers', sa.Column('isvnc', sa.Boolean(), nullable=True))
+    op.drop_index('idx_compaccess_computer', table_name='computeraccess')
+    op.drop_table('computeraccess')
+    op.drop_table('accessprotocols')

migrations/versions/7d06_typecolor_to_hex.py

@@ -0,0 +1,46 @@
+"""Give the built-in notification types real hex colors
+
+Recognition/Recertification/Training stored keyword typecolors ('recognition'
+etc.) that static color maps had to translate. Every other type already stores
+a hex. This converts the three to hex so color is fully data-driven and the
+static maps can go away. Their special behavior now rides on displaystyle /
+splitperemployee / showemployeephoto, not the color keyword.
+
+Revision ID: 7d06_typecolor_to_hex
+Revises: 7d05_pc_access_protocols
+Create Date: 2026-07-08
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+
+revision = '7d06_typecolor_to_hex'
+down_revision = '7d05_pc_access_protocols'
+branch_labels = None
+depends_on = None
+
+
+KEYWORD_HEX = {
+    'recognition': '#ffc107',
+    'recertification': '#0d6efd',
+    'training': '#17a2b8',
+}
+
+
+def upgrade():
+    conn = op.get_bind()
+    for keyword, hexcolor in KEYWORD_HEX.items():
+        conn.execute(
+            sa.text("UPDATE notificationtypes SET typecolor = :hex WHERE typecolor = :kw"),
+            {'hex': hexcolor, 'kw': keyword}
+        )
+
+
+def downgrade():
+    conn = op.get_bind()
+    for keyword, hexcolor in KEYWORD_HEX.items():
+        conn.execute(
+            sa.text("UPDATE notificationtypes SET typecolor = :kw WHERE typecolor = :hex"),
+            {'kw': keyword, 'hex': hexcolor}
+        )

migrations/versions/7d07_assettype_color.py

@@ -0,0 +1,42 @@
+"""Add color to asset types (data-driven map/type colors)
+
+Gives AssetType a color column (like AssetStatus) so the map's top-level type
+colors come from data instead of the hardcoded map in mapColors.js. Seeds the
+four base types with the exact colors that were hardcoded, so nothing changes
+visually until someone edits them.
+
+Revision ID: 7d07_assettype_color
+Revises: 7d06_typecolor_to_hex
+Create Date: 2026-07-08
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+
+revision = '7d07_assettype_color'
+down_revision = '7d06_typecolor_to_hex'
+branch_labels = None
+depends_on = None
+
+
+SEED = {
+    'equipment': '#F44336',
+    'computer': '#2196F3',
+    'printer': '#4CAF50',
+    'network_device': '#FF9800',
+}
+
+
+def upgrade():
+    op.add_column('assettypes', sa.Column('color', sa.String(length=20), nullable=True))
+    conn = op.get_bind()
+    for assettype, hexcolor in SEED.items():
+        conn.execute(
+            sa.text("UPDATE assettypes SET color = :c WHERE assettype = :t AND (color IS NULL OR color = '')"),
+            {'c': hexcolor, 't': assettype}
+        )
+
+
+def downgrade():
+    op.drop_column('assettypes', 'color')

migrations/versions/7d08_tvslides.py

@@ -0,0 +1,36 @@
+"""Slide manager: tvslides table
+
+Backing table for the slides plugin (lobby display + shopfloor screensaver
+playlists). Image files live on disk; this holds order + per-slide duration.
+
+Revision ID: 7d08_tvslides
+Revises: 7d07_assettype_color
+Create Date: 2026-07-08
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+
+revision = '7d08_tvslides'
+down_revision = '7d07_assettype_color'
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    op.create_table(
+        'tvslides',
+        sa.Column('slideid', sa.Integer(), primary_key=True),
+        sa.Column('surface', sa.String(length=20), nullable=False),
+        sa.Column('filename', sa.String(length=255), nullable=False),
+        sa.Column('sortorder', sa.Integer(), nullable=False, server_default='0'),
+        sa.Column('seconds', sa.Integer(), nullable=False, server_default='0'),
+        sa.Column('uploadeddate', sa.DateTime(), nullable=True),
+    )
+    op.create_index('idx_tvslide_surface', 'tvslides', ['surface'])
+
+
+def downgrade():
+    op.drop_index('idx_tvslide_surface', table_name='tvslides')
+    op.drop_table('tvslides')

migrations/versions/7d09_subtype_colors.py

@@ -0,0 +1,31 @@
+"""Add color to asset subtype tables (data-driven map colors)
+
+The map colors equipment/computer/network/printer subtypes round-robin from a
+palette. Give each subtype table a color column so a site can set stable, chosen
+colors that the map reads instead of the auto-assigned palette.
+
+Revision ID: 7d09_subtype_colors
+Revises: 7d08_tvslides
+Create Date: 2026-07-09
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+
+revision = '7d09_subtype_colors'
+down_revision = '7d08_tvslides'
+branch_labels = None
+depends_on = None
+
+TABLES = ['equipmenttypes', 'computertypes', 'networkdevicetypes', 'printertypes']
+
+
+def upgrade():
+    for table in TABLES:
+        op.add_column(table, sa.Column('color', sa.String(length=20), nullable=True))
+
+
+def downgrade():
+    for table in TABLES:
+        op.drop_column(table, 'color')

migrations/versions/7d10_relationshiptype_color.py

@@ -0,0 +1,26 @@
+"""Add color to relationship types
+
+Lets sites color relationship types (Controls, Contains, Stored At...) so the
+asset relationship graph/badges are visually distinct, like statuses.
+
+Revision ID: 7d10_relationshiptype_color
+Revises: 7d09_subtype_colors
+Create Date: 2026-07-09
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+
+revision = '7d10_relationshiptype_color'
+down_revision = '7d09_subtype_colors'
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    op.add_column('relationshiptypes', sa.Column('color', sa.String(length=20), nullable=True))
+
+
+def downgrade():
+    op.drop_column('relationshiptypes', 'color')

migrations/versions/7d11_locationtype_color.py

@@ -0,0 +1,23 @@
+"""Add color to location types
+
+Revision ID: 7d11_locationtype_color
+Revises: 7d10_relationshiptype_color
+Create Date: 2026-07-09
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+
+revision = '7d11_locationtype_color'
+down_revision = '7d10_relationshiptype_color'
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    op.add_column('locationtypes', sa.Column('color', sa.String(length=20), nullable=True))
+
+
+def downgrade():
+    op.drop_column('locationtypes', 'color')

migrations/versions/7d12_drop_computer_isshopfloor.py

@@ -0,0 +1,26 @@
+"""Drop computers.isshopfloor (redundant with the Shopfloor PC type)
+
+The flag was never populated (0 rows) and duplicated the 'Shopfloor' computer
+type. Shopfloor classification now lives entirely in computertype.
+
+Revision ID: 7d12_drop_isshopfloor
+Revises: 7d11_locationtype_color
+Create Date: 2026-07-09
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+
+revision = '7d12_drop_isshopfloor'
+down_revision = '7d11_locationtype_color'
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    op.drop_column('computers', 'isshopfloor')
+
+
+def downgrade():
+    op.add_column('computers', sa.Column('isshopfloor', sa.Boolean(), nullable=True, server_default='0'))

migrations/versions/7d13_printerdrivers.py

@@ -0,0 +1,32 @@
+"""Printer drivers: named SMB/HTTP links to driver packages
+
+Revision ID: 7d13_printerdrivers
+Revises: 7d12_drop_isshopfloor
+Create Date: 2026-07-09
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+
+revision = '7d13_printerdrivers'
+down_revision = '7d12_drop_isshopfloor'
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    op.create_table(
+        'printerdrivers',
+        sa.Column('driverid', sa.Integer(), primary_key=True),
+        sa.Column('name', sa.String(length=150), nullable=False),
+        sa.Column('location', sa.String(length=500), nullable=False),
+        sa.Column('description', sa.Text(), nullable=True),
+        sa.Column('modelnumberid', sa.Integer(), nullable=True),
+        sa.Column('isactive', sa.Boolean(), nullable=False, server_default='1'),
+        sa.ForeignKeyConstraint(['modelnumberid'], ['models.modelnumberid']),
+    )
+
+
+def downgrade():
+    op.drop_table('printerdrivers')

migrations/versions/7d14_customfields.py

@@ -0,0 +1,48 @@
+"""Custom fields: site-defined extra attributes per asset type
+
+Revision ID: 7d14_customfields
+Revises: 7d13_printerdrivers
+Create Date: 2026-07-09
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+
+revision = '7d14_customfields'
+down_revision = '7d13_printerdrivers'
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    op.create_table(
+        'customfields',
+        sa.Column('fieldid', sa.Integer(), primary_key=True),
+        sa.Column('assettypeid', sa.Integer(), nullable=False),
+        sa.Column('fieldkey', sa.String(length=50), nullable=False),
+        sa.Column('label', sa.String(length=150), nullable=False),
+        sa.Column('datatype', sa.String(length=20), nullable=False, server_default='text'),
+        sa.Column('options', sa.Text(), nullable=True),
+        sa.Column('showondetail', sa.Boolean(), nullable=False, server_default='1'),
+        sa.Column('showonform', sa.Boolean(), nullable=False, server_default='1'),
+        sa.Column('sortorder', sa.Integer(), nullable=False, server_default='0'),
+        sa.Column('isactive', sa.Boolean(), nullable=False, server_default='1'),
+        sa.ForeignKeyConstraint(['assettypeid'], ['assettypes.assettypeid']),
+        sa.UniqueConstraint('assettypeid', 'fieldkey', name='uq_customfield_type_key'),
+    )
+    op.create_table(
+        'customfieldvalues',
+        sa.Column('valueid', sa.Integer(), primary_key=True),
+        sa.Column('fieldid', sa.Integer(), nullable=False),
+        sa.Column('assetid', sa.Integer(), nullable=False),
+        sa.Column('value', sa.Text(), nullable=True),
+        sa.ForeignKeyConstraint(['fieldid'], ['customfields.fieldid'], ondelete='CASCADE'),
+        sa.ForeignKeyConstraint(['assetid'], ['assets.assetid'], ondelete='CASCADE'),
+        sa.UniqueConstraint('fieldid', 'assetid', name='uq_customfieldvalue_field_asset'),
+    )
+
+
+def downgrade():
+    op.drop_table('customfieldvalues')
+    op.drop_table('customfields')

migrations/versions/7d15_warranties.py

@@ -0,0 +1,45 @@
+"""Warranty plugin: warranties + warrantyassets
+
+Revision ID: 7d15_warranties
+Revises: 7d14_customfields
+Create Date: 2026-07-09
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+
+revision = '7d15_warranties'
+down_revision = '7d14_customfields'
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    op.create_table(
+        'warranties',
+        sa.Column('warrantyid', sa.Integer(), primary_key=True),
+        sa.Column('vendor', sa.String(length=100), nullable=False),
+        sa.Column('servicetag', sa.String(length=100), nullable=True),
+        sa.Column('provider', sa.String(length=20), nullable=False, server_default='manual'),
+        sa.Column('servicelevel', sa.String(length=150), nullable=True),
+        sa.Column('startdate', sa.Date(), nullable=True),
+        sa.Column('enddate', sa.Date(), nullable=True),
+        sa.Column('lastcheckeddate', sa.DateTime(), nullable=True),
+        sa.Column('notes', sa.Text(), nullable=True),
+        sa.Column('isactive', sa.Boolean(), nullable=False, server_default='1'),
+    )
+    op.create_table(
+        'warrantyassets',
+        sa.Column('id', sa.Integer(), primary_key=True),
+        sa.Column('warrantyid', sa.Integer(), nullable=False),
+        sa.Column('assetid', sa.Integer(), nullable=False),
+        sa.ForeignKeyConstraint(['warrantyid'], ['warranties.warrantyid'], ondelete='CASCADE'),
+        sa.ForeignKeyConstraint(['assetid'], ['assets.assetid'], ondelete='CASCADE'),
+        sa.UniqueConstraint('warrantyid', 'assetid', name='uq_warrantyasset_warranty_asset'),
+    )
+
+
+def downgrade():
+    op.drop_table('warrantyassets')
+    op.drop_table('warranties')