feat: add Units table, views, import/export

src/wuttafarm/db/alembic/versions/ea88e72a5fa5_add_units.py

@@ -0,0 +1,102 @@
+"""add Units
+
+Revision ID: ea88e72a5fa5
+Revises: 82a03f4ef1a4
+Create Date: 2026-02-18 20:01:40.720138
+
+"""
+
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+import wuttjamaican.db.util
+
+
+# revision identifiers, used by Alembic.
+revision: str = "ea88e72a5fa5"
+down_revision: Union[str, None] = "82a03f4ef1a4"
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+
+    # unit
+    op.create_table(
+        "unit",
+        sa.Column("uuid", wuttjamaican.db.util.UUID(), nullable=False),
+        sa.Column("name", sa.String(length=100), nullable=False),
+        sa.Column("description", sa.String(length=255), nullable=True),
+        sa.Column("farmos_uuid", wuttjamaican.db.util.UUID(), nullable=True),
+        sa.Column("drupal_id", sa.Integer(), nullable=True),
+        sa.PrimaryKeyConstraint("uuid", name=op.f("pk_unit")),
+        sa.UniqueConstraint("drupal_id", name=op.f("uq_unit_drupal_id")),
+        sa.UniqueConstraint("farmos_uuid", name=op.f("uq_unit_farmos_uuid")),
+        sa.UniqueConstraint("name", name=op.f("uq_unit_name")),
+    )
+    op.create_table(
+        "unit_version",
+        sa.Column(
+            "uuid", wuttjamaican.db.util.UUID(), autoincrement=False, nullable=False
+        ),
+        sa.Column("name", sa.String(length=100), autoincrement=False, nullable=True),
+        sa.Column(
+            "description", sa.String(length=255), autoincrement=False, nullable=True
+        ),
+        sa.Column(
+            "farmos_uuid",
+            wuttjamaican.db.util.UUID(),
+            autoincrement=False,
+            nullable=True,
+        ),
+        sa.Column("drupal_id", sa.Integer(), autoincrement=False, nullable=True),
+        sa.Column(
+            "transaction_id", sa.BigInteger(), autoincrement=False, nullable=False
+        ),
+        sa.Column("end_transaction_id", sa.BigInteger(), nullable=True),
+        sa.Column("operation_type", sa.SmallInteger(), nullable=False),
+        sa.PrimaryKeyConstraint("uuid", "transaction_id", name=op.f("pk_unit_version")),
+    )
+    op.create_index(
+        op.f("ix_unit_version_end_transaction_id"),
+        "unit_version",
+        ["end_transaction_id"],
+        unique=False,
+    )
+    op.create_index(
+        op.f("ix_unit_version_operation_type"),
+        "unit_version",
+        ["operation_type"],
+        unique=False,
+    )
+    op.create_index(
+        "ix_unit_version_pk_transaction_id",
+        "unit_version",
+        ["uuid", sa.literal_column("transaction_id DESC")],
+        unique=False,
+    )
+    op.create_index(
+        "ix_unit_version_pk_validity",
+        "unit_version",
+        ["uuid", "transaction_id", "end_transaction_id"],
+        unique=False,
+    )
+    op.create_index(
+        op.f("ix_unit_version_transaction_id"),
+        "unit_version",
+        ["transaction_id"],
+        unique=False,
+    )
+
+
+def downgrade() -> None:
+
+    # unit
+    op.drop_index(op.f("ix_unit_version_transaction_id"), table_name="unit_version")
+    op.drop_index("ix_unit_version_pk_validity", table_name="unit_version")
+    op.drop_index("ix_unit_version_pk_transaction_id", table_name="unit_version")
+    op.drop_index(op.f("ix_unit_version_operation_type"), table_name="unit_version")
+    op.drop_index(op.f("ix_unit_version_end_transaction_id"), table_name="unit_version")
+    op.drop_table("unit_version")
+    op.drop_table("unit")

src/wuttafarm/db/model/__init__.py

@@ -30,6 +30,7 @@ from wuttjamaican.db.model import *
 from .users import WuttaFarmUser
 
 # wuttafarm proper models
+from .unit import Unit
 from .asset import AssetType, Asset, AssetParent
 from .asset_land import LandType, LandAsset
 from .asset_structure import StructureType, StructureAsset

src/wuttafarm/db/model/unit.py

@@ -0,0 +1,81 @@
+# -*- coding: utf-8; -*-
+################################################################################
+#
+#  WuttaFarm --Web app to integrate with and extend farmOS
+#  Copyright © 2026 Lance Edgar
+#
+#  This file is part of WuttaFarm.
+#
+#  WuttaFarm is free software: you can redistribute it and/or modify it under
+#  the terms of the GNU General Public License as published by the Free Software
+#  Foundation, either version 3 of the License, or (at your option) any later
+#  version.
+#
+#  WuttaFarm is distributed in the hope that it will be useful, but WITHOUT ANY
+#  WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+#  A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+#
+#  You should have received a copy of the GNU General Public License along with
+#  WuttaFarm.  If not, see <http://www.gnu.org/licenses/>.
+#
+################################################################################
+"""
+Model definition for Units
+"""
+
+import sqlalchemy as sa
+
+from wuttjamaican.db import model
+
+
+class Unit(model.Base):
+    """
+    Represents an "unit" (taxonomy term) from farmOS
+    """
+
+    __tablename__ = "unit"
+    __versioned__ = {}
+    __wutta_hint__ = {
+        "model_title": "Unit",
+        "model_title_plural": "Units",
+    }
+
+    uuid = model.uuid_column()
+
+    name = sa.Column(
+        sa.String(length=100),
+        nullable=False,
+        unique=True,
+        doc="""
+        Name of the unit.
+        """,
+    )
+
+    description = sa.Column(
+        sa.String(length=255),
+        nullable=True,
+        doc="""
+        Optional description for the unit.
+        """,
+    )
+
+    farmos_uuid = sa.Column(
+        model.UUID(),
+        nullable=True,
+        unique=True,
+        doc="""
+        UUID for the unit within farmOS.
+        """,
+    )
+
+    drupal_id = sa.Column(
+        sa.Integer(),
+        nullable=True,
+        unique=True,
+        doc="""
+        Drupal internal ID for the unit.
+        """,
+    )
+
+    def __str__(self):
+        return self.name or ""

src/wuttafarm/farmos/importing/model.py

@@ -64,6 +64,81 @@ class ToFarmOS(Importer):
         return self.app.make_utc(dt)
 
 
+class ToFarmOSTaxonomy(ToFarmOS):
+
+    farmos_taxonomy_type = None
+
+    supported_fields = [
+        "uuid",
+        "name",
+    ]
+
+    def get_target_objects(self, **kwargs):
+        result = self.farmos_client.resource.get(
+            "taxonomy_term", self.farmos_taxonomy_type
+        )
+        return result["data"]
+
+    def get_target_object(self, key):
+
+        # fetch from cache, if applicable
+        if self.caches_target:
+            return super().get_target_object(key)
+
+        # okay now must fetch via API
+        if self.get_keys() != ["uuid"]:
+            raise ValueError("must use uuid key for this to work")
+        uuid = key[0]
+
+        try:
+            result = self.farmos_client.resource.get_id(
+                "taxonomy_term", self.farmos_taxonomy_type, str(uuid)
+            )
+        except requests.HTTPError as exc:
+            if exc.response.status_code == 404:
+                return None
+            raise
+        return result["data"]
+
+    def normalize_target_object(self, obj):
+        return {
+            "uuid": UUID(obj["id"]),
+            "name": obj["attributes"]["name"],
+        }
+
+    def get_term_payload(self, source_data):
+        return {
+            "attributes": {
+                "name": source_data["name"],
+            }
+        }
+
+    def create_target_object(self, key, source_data):
+        if source_data.get("__ignoreme__"):
+            return None
+        if self.dry_run:
+            return source_data
+
+        payload = self.get_term_payload(source_data)
+        result = self.farmos_client.resource.send(
+            "taxonomy_term", self.farmos_taxonomy_type, payload
+        )
+        normal = self.normalize_target_object(result["data"])
+        normal["_new_object"] = result["data"]
+        return normal
+
+    def update_target_object(self, asset, source_data, target_data=None):
+        if self.dry_run:
+            return asset
+
+        payload = self.get_term_payload(source_data)
+        payload["id"] = str(source_data["uuid"])
+        result = self.farmos_client.resource.send(
+            "taxonomy_term", self.farmos_taxonomy_type, payload
+        )
+        return self.normalize_target_object(result["data"])
+
+
 class ToFarmOSAsset(ToFarmOS):
     """
     Base class for asset data importer targeting the farmOS API.
@@ -151,6 +226,12 @@ class ToFarmOSAsset(ToFarmOS):
         return payload
 
 
+class UnitImporter(ToFarmOSTaxonomy):
+
+    model_title = "Unit"
+    farmos_taxonomy_type = "unit"
+
+
 class AnimalAssetImporter(ToFarmOSAsset):
 
     model_title = "AnimalAsset"
@@ -209,77 +290,10 @@ class AnimalAssetImporter(ToFarmOSAsset):
         return payload
 
 
-class AnimalTypeImporter(ToFarmOS):
+class AnimalTypeImporter(ToFarmOSTaxonomy):
 
     model_title = "AnimalType"
-
+    farmos_taxonomy_type = "animal_type"
-    supported_fields = [
-        "uuid",
-        "name",
-    ]
-
-    def get_target_objects(self, **kwargs):
-        result = self.farmos_client.resource.get("taxonomy_term", "animal_type")
-        return result["data"]
-
-    def get_target_object(self, key):
-
-        # fetch from cache, if applicable
-        if self.caches_target:
-            return super().get_target_object(key)
-
-        # okay now must fetch via API
-        if self.get_keys() != ["uuid"]:
-            raise ValueError("must use uuid key for this to work")
-        uuid = key[0]
-
-        try:
-            result = self.farmos_client.resource.get_id(
-                "taxonomy_term", "animal_type", str(uuid)
-            )
-        except requests.HTTPError as exc:
-            if exc.response.status_code == 404:
-                return None
-            raise
-        return result["data"]
-
-    def normalize_target_object(self, obj):
-        return {
-            "uuid": UUID(obj["id"]),
-            "name": obj["attributes"]["name"],
-        }
-
-    def get_type_payload(self, source_data):
-        return {
-            "attributes": {
-                "name": source_data["name"],
-            }
-        }
-
-    def create_target_object(self, key, source_data):
-        if source_data.get("__ignoreme__"):
-            return None
-        if self.dry_run:
-            return source_data
-
-        payload = self.get_type_payload(source_data)
-        result = self.farmos_client.resource.send(
-            "taxonomy_term", "animal_type", payload
-        )
-        normal = self.normalize_target_object(result["data"])
-        normal["_new_object"] = result["data"]
-        return normal
-
-    def update_target_object(self, asset, source_data, target_data=None):
-        if self.dry_run:
-            return asset
-
-        payload = self.get_type_payload(source_data)
-        payload["id"] = str(source_data["uuid"])
-        result = self.farmos_client.resource.send(
-            "taxonomy_term", "animal_type", payload
-        )
-        return self.normalize_target_object(result["data"])
 
 
 class GroupAssetImporter(ToFarmOSAsset):

src/wuttafarm/farmos/importing/wuttafarm.py

@@ -99,6 +99,7 @@ class FromWuttaFarmToFarmOS(FromWuttaFarmHandler, ToFarmOSHandler):
         importers["AnimalAsset"] = AnimalAssetImporter
         importers["GroupAsset"] = GroupAssetImporter
         importers["PlantAsset"] = PlantAssetImporter
+        importers["Unit"] = UnitImporter
         importers["ActivityLog"] = ActivityLogImporter
         importers["HarvestLog"] = HarvestLogImporter
         importers["MedicalLog"] = MedicalLogImporter
@@ -184,6 +185,28 @@ class AnimalTypeImporter(FromWuttaFarm, farmos_importing.model.AnimalTypeImporte
         }
 
 
+class UnitImporter(FromWuttaFarm, farmos_importing.model.UnitImporter):
+    """
+    WuttaFarm → farmOS API exporter for Units
+    """
+
+    source_model_class = model.Unit
+
+    supported_fields = [
+        "uuid",
+        "name",
+    ]
+
+    drupal_internal_id_field = "drupal_internal__tid"
+
+    def normalize_source_object(self, unit):
+        return {
+            "uuid": unit.farmos_uuid or self.app.make_true_uuid(),
+            "name": unit.name,
+            "_src_object": unit,
+        }
+
+
 class GroupAssetImporter(FromWuttaFarm, farmos_importing.model.GroupAssetImporter):
     """
     WuttaFarm → farmOS API exporter for Group Assets

src/wuttafarm/importing/farmos.py

@@ -106,6 +106,7 @@ class FromFarmOSToWuttaFarm(FromFarmOSHandler, ToWuttaFarmHandler):
         importers["GroupAsset"] = GroupAssetImporter
         importers["PlantType"] = PlantTypeImporter
         importers["PlantAsset"] = PlantAssetImporter
+        importers["Unit"] = UnitImporter
         importers["LogType"] = LogTypeImporter
         importers["ActivityLog"] = ActivityLogImporter
         importers["HarvestLog"] = HarvestLogImporter
@@ -821,6 +822,35 @@ class UserImporter(FromFarmOS, ToWutta):
 ##############################
 
 
+class UnitImporter(FromFarmOS, ToWutta):
+    """
+    farmOS API → WuttaFarm importer for Units
+    """
+
+    model_class = model.Unit
+
+    supported_fields = [
+        "farmos_uuid",
+        "drupal_id",
+        "name",
+        "description",
+    ]
+
+    def get_source_objects(self):
+        """ """
+        result = self.farmos_client.resource.get("taxonomy_term", "unit")
+        return result["data"]
+
+    def normalize_source_object(self, unit):
+        """ """
+        return {
+            "farmos_uuid": UUID(unit["id"]),
+            "drupal_id": unit["attributes"]["drupal_internal__tid"],
+            "name": unit["attributes"]["name"],
+            "description": unit["attributes"]["description"],
+        }
+
+
 class LogTypeImporter(FromFarmOS, ToWutta):
     """
     farmOS API → WuttaFarm importer for Log Types

src/wuttafarm/web/menus.py

@@ -139,6 +139,11 @@ class WuttaFarmMenuHandler(base.MenuHandler):
                     "route": "log_types",
                     "perm": "log_types.list",
                 },
+                {
+                    "title": "Units",
+                    "route": "units",
+                    "perm": "units.list",
+                },
             ],
         }
 
@@ -233,6 +238,11 @@ class WuttaFarmMenuHandler(base.MenuHandler):
                     "route": "farmos_log_types",
                     "perm": "farmos_log_types.list",
                 },
+                {
+                    "title": "Units",
+                    "route": "farmos_units",
+                    "perm": "farmos_units.list",
+                },
                 {"type": "sep"},
                 {
                     "title": "Users",

src/wuttafarm/web/views/__init__.py

@@ -41,6 +41,7 @@ def includeme(config):
     )
 
     # native table views
+    config.include("wuttafarm.web.views.units")
     config.include("wuttafarm.web.views.asset_types")
     config.include("wuttafarm.web.views.assets")
     config.include("wuttafarm.web.views.land")

src/wuttafarm/web/views/common.py

@@ -129,6 +129,11 @@ class CommonView(base.CommonView):
                 "structure_assets.list",
                 "structure_assets.view",
                 "structure_assets.versions",
+                "units.create",
+                "units.edit",
+                "units.list",
+                "units.view",
+                "units.versions",
             ]
             for perm in site_admin_perms:
                 auth.grant_permission(site_admin, perm)

src/wuttafarm/web/views/farmos/__init__.py

@@ -29,6 +29,7 @@ from .master import FarmOSMasterView
 def includeme(config):
     config.include("wuttafarm.web.views.farmos.users")
     config.include("wuttafarm.web.views.farmos.asset_types")
+    config.include("wuttafarm.web.views.farmos.units")
     config.include("wuttafarm.web.views.farmos.land_types")
     config.include("wuttafarm.web.views.farmos.land_assets")
     config.include("wuttafarm.web.views.farmos.structure_types")

src/wuttafarm/web/views/farmos/animal_types.py

@@ -23,16 +23,10 @@
 View for farmOS animal types
 """
 
-import datetime
+from wuttafarm.web.views.farmos.master import TaxonomyMasterView
-
-import colander
-
-from wuttaweb.forms.schema import WuttaDateTime
-
-from wuttafarm.web.views.farmos import FarmOSMasterView
 
 
-class AnimalTypeView(FarmOSMasterView):
+class AnimalTypeView(TaxonomyMasterView):
     """
     Master view for Animal Types in farmOS.
     """
@@ -44,90 +38,14 @@ class AnimalTypeView(FarmOSMasterView):
     route_prefix = "farmos_animal_types"
     url_prefix = "/farmOS/animal-types"
 
+    farmos_taxonomy_type = "animal_type"
     farmos_refurl_path = "/admin/structure/taxonomy/manage/animal_type/overview"
 
-    grid_columns = [
-        "name",
-        "description",
-        "changed",
-    ]
-
-    sort_defaults = "name"
-
-    form_fields = [
-        "name",
-        "description",
-        "changed",
-    ]
-
-    def get_grid_data(self, columns=None, session=None):
-        animal_types = self.farmos_client.resource.get("taxonomy_term", "animal_type")
-        return [self.normalize_animal_type(t) for t in animal_types["data"]]
-
-    def configure_grid(self, grid):
-        g = grid
-        super().configure_grid(g)
-
-        # name
-        g.set_link("name")
-        g.set_searchable("name")
-
-        # changed
-        g.set_renderer("changed", "datetime")
-
-    def get_instance(self):
-        animal_type = self.farmos_client.resource.get_id(
-            "taxonomy_term", "animal_type", self.request.matchdict["uuid"]
-        )
-        self.raw_json = animal_type
-        return self.normalize_animal_type(animal_type["data"])
-
-    def get_instance_title(self, animal_type):
-        return animal_type["name"]
-
-    def normalize_animal_type(self, animal_type):
-
-        if changed := animal_type["attributes"]["changed"]:
-            changed = datetime.datetime.fromisoformat(changed)
-            changed = self.app.localtime(changed)
-
-        if description := animal_type["attributes"]["description"]:
-            description = description["value"]
-
-        return {
-            "uuid": animal_type["id"],
-            "drupal_id": animal_type["attributes"]["drupal_internal__tid"],
-            "name": animal_type["attributes"]["name"],
-            "description": description or colander.null,
-            "changed": changed,
-        }
-
-    def configure_form(self, form):
-        f = form
-        super().configure_form(f)
-
-        # description
-        f.set_widget("description", "notes")
-
-        # changed
-        f.set_node("changed", WuttaDateTime())
-
     def get_xref_buttons(self, animal_type):
+        buttons = super().get_xref_buttons(animal_type)
         model = self.app.model
         session = self.Session()
 
-        buttons = [
-            self.make_button(
-                "View in farmOS",
-                primary=True,
-                url=self.app.get_farmos_url(
-                    f"/taxonomy/term/{animal_type['drupal_id']}"
-                ),
-                target="_blank",
-                icon_left="external-link-alt",
-            )
-        ]
-
         if wf_animal_type := (
             session.query(model.AnimalType)
             .filter(model.AnimalType.farmos_uuid == animal_type["uuid"])

src/wuttafarm/web/views/farmos/master.py

@@ -23,11 +23,14 @@
 Base class for farmOS master views
 """
 
+import datetime
 import json
 
+import colander
 import markdown
 
 from wuttaweb.views import MasterView
+from wuttaweb.forms.schema import WuttaDateTime
 
 from wuttafarm.web.util import save_farmos_oauth2_token
 
@@ -100,3 +103,90 @@ class FarmOSMasterView(MasterView):
             )
 
         return context
+
+
+class TaxonomyMasterView(FarmOSMasterView):
+    """
+    Base class for farmOS "taxonomy term" views
+    """
+
+    farmos_taxonomy_type = None
+
+    grid_columns = [
+        "name",
+        "description",
+        "changed",
+    ]
+
+    sort_defaults = "name"
+
+    form_fields = [
+        "name",
+        "description",
+        "changed",
+    ]
+
+    def get_grid_data(self, columns=None, session=None):
+        result = self.farmos_client.resource.get(
+            "taxonomy_term", self.farmos_taxonomy_type
+        )
+        return [self.normalize_taxonomy_term(t) for t in result["data"]]
+
+    def normalize_taxonomy_term(self, term):
+
+        if changed := term["attributes"]["changed"]:
+            changed = datetime.datetime.fromisoformat(changed)
+            changed = self.app.localtime(changed)
+
+        if description := term["attributes"]["description"]:
+            description = description["value"]
+
+        return {
+            "uuid": term["id"],
+            "drupal_id": term["attributes"]["drupal_internal__tid"],
+            "name": term["attributes"]["name"],
+            "description": description or colander.null,
+            "changed": changed,
+        }
+
+    def configure_grid(self, grid):
+        g = grid
+        super().configure_grid(g)
+
+        # name
+        g.set_link("name")
+        g.set_searchable("name")
+
+        # changed
+        g.set_renderer("changed", "datetime")
+
+    def get_instance(self):
+        result = self.farmos_client.resource.get_id(
+            "taxonomy_term", self.farmos_taxonomy_type, self.request.matchdict["uuid"]
+        )
+        self.raw_json = result
+        return self.normalize_taxonomy_term(result["data"])
+
+    def get_instance_title(self, term):
+        return term["name"]
+
+    def configure_form(self, form):
+        f = form
+        super().configure_form(f)
+
+        # description
+        f.set_widget("description", "notes")
+
+        # changed
+        f.set_node("changed", WuttaDateTime())
+
+    def get_xref_buttons(self, term):
+        return [
+            self.make_button(
+                "View in farmOS",
+                primary=True,
+                url=self.app.get_farmos_url(f"/taxonomy/term/{term['drupal_id']}"),
+                target="_blank",
+                icon_left="external-link-alt",
+            )
+        ]

src/wuttafarm/web/views/farmos/plants.py

@@ -30,12 +30,13 @@ import colander
 from wuttaweb.forms.schema import WuttaDateTime
 from wuttaweb.forms.widgets import WuttaDateTimeWidget
 
+from wuttafarm.web.views.farmos.master import TaxonomyMasterView
 from wuttafarm.web.views.farmos import FarmOSMasterView
 from wuttafarm.web.forms.schema import UsersType, StructureType, FarmOSPlantTypes
 from wuttafarm.web.forms.widgets import ImageWidget
 
 
-class PlantTypeView(FarmOSMasterView):
+class PlantTypeView(TaxonomyMasterView):
     """
     Master view for Plant Types in farmOS.
     """
@@ -47,90 +48,14 @@ class PlantTypeView(FarmOSMasterView):
     route_prefix = "farmos_plant_types"
     url_prefix = "/farmOS/plant-types"
 
+    farmos_taxonomy_type = "plant_type"
     farmos_refurl_path = "/admin/structure/taxonomy/manage/plant_type/overview"
 
-    grid_columns = [
-        "name",
-        "description",
-        "changed",
-    ]
-
-    sort_defaults = "name"
-
-    form_fields = [
-        "name",
-        "description",
-        "changed",
-    ]
-
-    def get_grid_data(self, columns=None, session=None):
-        result = self.farmos_client.resource.get("taxonomy_term", "plant_type")
-        return [self.normalize_plant_type(t) for t in result["data"]]
-
-    def configure_grid(self, grid):
-        g = grid
-        super().configure_grid(g)
-
-        # name
-        g.set_link("name")
-        g.set_searchable("name")
-
-        # changed
-        g.set_renderer("changed", "datetime")
-
-    def get_instance(self):
-        plant_type = self.farmos_client.resource.get_id(
-            "taxonomy_term", "plant_type", self.request.matchdict["uuid"]
-        )
-        self.raw_json = plant_type
-        return self.normalize_plant_type(plant_type["data"])
-
-    def get_instance_title(self, plant_type):
-        return plant_type["name"]
-
-    def normalize_plant_type(self, plant_type):
-
-        if changed := plant_type["attributes"]["changed"]:
-            changed = datetime.datetime.fromisoformat(changed)
-            changed = self.app.localtime(changed)
-
-        if description := plant_type["attributes"]["description"]:
-            description = description["value"]
-
-        return {
-            "uuid": plant_type["id"],
-            "drupal_id": plant_type["attributes"]["drupal_internal__tid"],
-            "name": plant_type["attributes"]["name"],
-            "description": description or colander.null,
-            "changed": changed,
-        }
-
-    def configure_form(self, form):
-        f = form
-        super().configure_form(f)
-
-        # description
-        f.set_widget("description", "notes")
-
-        # changed
-        f.set_node("changed", WuttaDateTime())
-
     def get_xref_buttons(self, plant_type):
+        buttons = super().get_xref_buttons(plant_type)
         model = self.app.model
         session = self.Session()
 
-        buttons = [
-            self.make_button(
-                "View in farmOS",
-                primary=True,
-                url=self.app.get_farmos_url(
-                    f"/taxonomy/term/{plant_type['drupal_id']}"
-                ),
-                target="_blank",
-                icon_left="external-link-alt",
-            )
-        ]
-
         if wf_plant_type := (
             session.query(model.PlantType)
             .filter(model.PlantType.farmos_uuid == plant_type["uuid"])

src/wuttafarm/web/views/farmos/units.py

@@ -0,0 +1,74 @@
+# -*- coding: utf-8; -*-
+################################################################################
+#
+#  WuttaFarm --Web app to integrate with and extend farmOS
+#  Copyright © 2026 Lance Edgar
+#
+#  This file is part of WuttaFarm.
+#
+#  WuttaFarm is free software: you can redistribute it and/or modify it under
+#  the terms of the GNU General Public License as published by the Free Software
+#  Foundation, either version 3 of the License, or (at your option) any later
+#  version.
+#
+#  WuttaFarm is distributed in the hope that it will be useful, but WITHOUT ANY
+#  WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+#  A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+#
+#  You should have received a copy of the GNU General Public License along with
+#  WuttaFarm.  If not, see <http://www.gnu.org/licenses/>.
+#
+################################################################################
+"""
+View for farmOS units
+"""
+
+from wuttafarm.web.views.farmos.master import TaxonomyMasterView
+
+
+class UnitView(TaxonomyMasterView):
+    """
+    Master view for Units in farmOS.
+    """
+
+    model_name = "farmos_unit"
+    model_title = "farmOS Unit"
+    model_title_plural = "farmOS Units"
+
+    route_prefix = "farmos_units"
+    url_prefix = "/farmOS/units"
+
+    farmos_taxonomy_type = "unit"
+    farmos_refurl_path = "/admin/structure/taxonomy/manage/unit/overview"
+
+    def get_xref_buttons(self, unit):
+        buttons = super().get_xref_buttons(unit)
+        model = self.app.model
+        session = self.Session()
+
+        if wf_unit := (
+            session.query(model.Unit)
+            .filter(model.Unit.farmos_uuid == unit["uuid"])
+            .first()
+        ):
+            buttons.append(
+                self.make_button(
+                    f"View {self.app.get_title()} record",
+                    primary=True,
+                    url=self.request.route_url("units.view", uuid=wf_unit.uuid),
+                    icon_left="eye",
+                )
+            )
+
+        return buttons
+
+
+def defaults(config, **kwargs):
+    base = globals()
+
+    UnitView = kwargs.get("UnitView", base["UnitView"])
+    UnitView.defaults(config)
+
+
+def includeme(config):
+    defaults(config)

src/wuttafarm/web/views/units.py

@@ -0,0 +1,95 @@
+# -*- coding: utf-8; -*-
+################################################################################
+#
+#  WuttaFarm --Web app to integrate with and extend farmOS
+#  Copyright © 2026 Lance Edgar
+#
+#  This file is part of WuttaFarm.
+#
+#  WuttaFarm is free software: you can redistribute it and/or modify it under
+#  the terms of the GNU General Public License as published by the Free Software
+#  Foundation, either version 3 of the License, or (at your option) any later
+#  version.
+#
+#  WuttaFarm is distributed in the hope that it will be useful, but WITHOUT ANY
+#  WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+#  A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+#
+#  You should have received a copy of the GNU General Public License along with
+#  WuttaFarm.  If not, see <http://www.gnu.org/licenses/>.
+#
+################################################################################
+"""
+Master view for Units
+"""
+
+from wuttafarm.web.views import WuttaFarmMasterView
+from wuttafarm.db.model import Unit
+
+
+class UnitView(WuttaFarmMasterView):
+    """
+    Master view for Units
+    """
+
+    model_class = Unit
+    route_prefix = "units"
+    url_prefix = "/animal-types"
+
+    farmos_refurl_path = "/admin/structure/taxonomy/manage/unit/overview"
+
+    grid_columns = [
+        "name",
+        "description",
+    ]
+
+    sort_defaults = "name"
+
+    filter_defaults = {
+        "name": {"active": True, "verb": "contains"},
+    }
+
+    form_fields = [
+        "name",
+        "description",
+        "farmos_uuid",
+        "drupal_id",
+    ]
+
+    def configure_grid(self, grid):
+        g = grid
+        super().configure_grid(g)
+
+        # name
+        g.set_link("name")
+
+    def get_farmos_url(self, unit):
+        return self.app.get_farmos_url(f"/taxonomy/term/{unit.drupal_id}")
+
+    def get_xref_buttons(self, unit):
+        buttons = super().get_xref_buttons(unit)
+
+        if unit.farmos_uuid:
+            buttons.append(
+                self.make_button(
+                    "View farmOS record",
+                    primary=True,
+                    url=self.request.route_url(
+                        "farmos_units.view", uuid=unit.farmos_uuid
+                    ),
+                    icon_left="eye",
+                )
+            )
+
+        return buttons
+
+
+def defaults(config, **kwargs):
+    base = globals()
+
+    UnitView = kwargs.get("UnitView", base["UnitView"])
+    UnitView.defaults(config)
+
+
+def includeme(config):
+    defaults(config)