feat: expose "current location" for assets

based on most recent movement log, as in farmOS

src/wuttafarm/app.py

@@ -36,6 +36,21 @@ class WuttaFarmAppHandler(base.AppHandler):
     default_auth_handler_spec = "wuttafarm.auth:WuttaFarmAuthHandler"
     default_install_handler_spec = "wuttafarm.install:WuttaFarmInstallHandler"
 
+    def get_asset_handler(self):
+        """
+        Get the configured asset handler.
+
+        :rtype: :class:`~wuttafarm.assets.AssetHandler`
+        """
+        if "asset" not in self.handlers:
+            spec = self.config.get(
+                f"{self.appname}.asset_handler",
+                default="wuttafarm.assets:AssetHandler",
+            )
+            factory = self.load_object(spec)
+            self.handlers["asset"] = factory(self.config)
+        return self.handlers["asset"]
+
     def get_farmos_handler(self):
         """
         Get the configured farmOS integration handler.

src/wuttafarm/assets.py

@@ -0,0 +1,49 @@
+# -*- 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/>.
+#
+################################################################################
+"""
+Asset handler
+"""
+
+from wuttjamaican.app import GenericHandler
+
+
+class AssetHandler(GenericHandler):
+    """
+    Base class and default implementation for the asset
+    :term:`handler`.
+    """
+
+    def get_locations(self, asset):
+        model = self.app.model
+        session = self.app.get_session(asset)
+
+        loclog = (
+            session.query(model.Log)
+            .join(model.LogAsset)
+            .filter(model.LogAsset.asset == asset)
+            .filter(model.Log.is_movement == True)
+            .order_by(model.Log.timestamp.desc())
+            .first()
+        )
+        if loclog:
+            return loclog.locations
+        return []

src/wuttafarm/web/forms/schema.py

@@ -364,7 +364,7 @@ class AssetParentRefs(WuttaSet):
         return AssetParentRefsWidget(self.request, **kwargs)
 
 
-class LogAssetRefs(WuttaSet):
+class AssetRefs(WuttaSet):
     """
     Schema type for Assets field (on a Log record)
     """
@@ -376,9 +376,9 @@ class LogAssetRefs(WuttaSet):
         return {asset.uuid for asset in appstruct}
 
     def widget_maker(self, **kwargs):
-        from wuttafarm.web.forms.widgets import LogAssetRefsWidget
+        from wuttafarm.web.forms.widgets import AssetRefsWidget
 
-        return LogAssetRefsWidget(self.request, **kwargs)
+        return AssetRefsWidget(self.request, **kwargs)
 
 
 class LogQuantityRefs(WuttaSet):
@@ -398,7 +398,7 @@ class LogQuantityRefs(WuttaSet):
         return LogQuantityRefsWidget(self.request, **kwargs)
 
 
-class LogOwnerRefs(WuttaSet):
+class OwnerRefs(WuttaSet):
     """
     Schema type for Owners field (on a Log record)
     """
@@ -410,9 +410,9 @@ class LogOwnerRefs(WuttaSet):
         return {user.uuid for user in appstruct}
 
     def widget_maker(self, **kwargs):
-        from wuttafarm.web.forms.widgets import LogOwnerRefsWidget
+        from wuttafarm.web.forms.widgets import OwnerRefsWidget
 
-        return LogOwnerRefsWidget(self.request, **kwargs)
+        return OwnerRefsWidget(self.request, **kwargs)
 
 
 class Notes(colander.String):

src/wuttafarm/web/forms/widgets.py

@@ -423,9 +423,9 @@ class AssetParentRefsWidget(WuttaCheckboxChoiceWidget):
         return super().serialize(field, cstruct, **kw)
 
 
-class LogAssetRefsWidget(WuttaCheckboxChoiceWidget):
+class AssetRefsWidget(WuttaCheckboxChoiceWidget):
     """
-    Widget for Assets field (on a Log record)
+    Widget for Assets field (of various kinds).
     """
 
     def serialize(self, field, cstruct, **kw):
@@ -486,9 +486,9 @@ class LogQuantityRefsWidget(WuttaCheckboxChoiceWidget):
         return super().serialize(field, cstruct, **kw)
 
 
-class LogOwnerRefsWidget(WuttaCheckboxChoiceWidget):
+class OwnerRefsWidget(WuttaCheckboxChoiceWidget):
     """
-    Widget for Owners field (on a Log record)
+    Widget for Owners field (on an Asset or Log record)
     """
 
     def serialize(self, field, cstruct, **kw):

src/wuttafarm/web/views/animals.py

@@ -243,6 +243,8 @@ class AnimalAssetView(AssetMasterView):
         "is_sterile",
         "notes",
         "asset_type",
+        "owners",
+        "locations",
         "archived",
         "drupal_id",
         "farmos_uuid",

src/wuttafarm/web/views/assets.py

@@ -32,7 +32,7 @@ from wuttaweb.db import Session
 
 from wuttafarm.web.views import WuttaFarmMasterView
 from wuttafarm.db.model import Asset, Log
-from wuttafarm.web.forms.schema import AssetParentRefs
+from wuttafarm.web.forms.schema import AssetParentRefs, OwnerRefs, AssetRefs
 from wuttafarm.web.forms.widgets import ImageWidget
 from wuttafarm.util import get_log_type_enum
 from wuttafarm.web.util import get_farmos_client_for_user
@@ -140,6 +140,10 @@ class AssetMasterView(WuttaFarmMasterView):
         g.set_label("owners", "Owner")
         g.set_renderer("owners", self.render_owners_for_grid)
 
+        # locations
+        g.set_label("locations", "Location")
+        g.set_renderer("locations", self.render_locations_for_grid)
+
         # archived
         g.set_renderer("archived", "boolean")
         g.set_sorter("archived", model.Asset.archived)
@@ -170,6 +174,21 @@ class AssetMasterView(WuttaFarmMasterView):
 
         return ", ".join([user.username for user in asset.owners])
 
+    def render_locations_for_grid(self, asset, field, value):
+        asset_handler = self.app.get_asset_handler()
+        locations = asset_handler.get_locations(asset)
+
+        if self.farmos_style_grid_links:
+            links = []
+            for loc in locations:
+                url = self.request.route_url(
+                    f"{loc.asset_type}_assets.view", uuid=loc.uuid
+                )
+                links.append(tags.link_to(str(loc), url))
+            return ", ".join(links)
+
+        return ", ".join([str(loc) for loc in locations])
+
     def grid_row_class(self, asset, data, i):
         """ """
         if asset.archived:
@@ -179,6 +198,7 @@ class AssetMasterView(WuttaFarmMasterView):
     def configure_form(self, form):
         f = form
         super().configure_form(f)
+        asset_handler = self.app.get_asset_handler()
         asset = form.model_instance
 
         # asset_type
@@ -191,12 +211,30 @@ class AssetMasterView(WuttaFarmMasterView):
             )
             f.set_readonly("asset_type")
 
+        # owners
+        if self.creating or self.editing:
+            f.remove("owners")  # TODO: need to support this
+        else:
+            f.set_node("owners", OwnerRefs(self.request))
+            # nb. must explicity declare value for non-standard field
+            f.set_default("owners", asset.owners)
+
+        # locations
+        if self.creating or self.editing:
+            # nb. this is a calculated field
+            f.remove("locations")
+        else:
+            f.set_label("locations", "Current Location")
+            f.set_node("locations", AssetRefs(self.request))
+            # nb. must explicity declare value for non-standard field
+            f.set_default("locations", asset_handler.get_locations(asset))
+
         # parents
         if self.creating or self.editing:
             f.remove("parents")  # TODO: add support for this
         else:
             f.set_node("parents", AssetParentRefs(self.request))
-            f.set_default("parents", [p.parent_uuid for p in asset.asset._parents])
+            f.set_default("parents", [p.uuid for p in asset.parents])
 
         # notes
         f.set_widget("notes", "notes")

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

@@ -53,7 +53,6 @@ class AssetMasterView(FarmOSMasterView):
     labels = {
         "name": "Asset Name",
         "asset_type_name": "Asset Type",
-        "owners": "Owner",
         "locations": "Location",
         "thumbnail_url": "Thumbnail URL",
         "image_url": "Image URL",
@@ -104,6 +103,7 @@ class AssetMasterView(FarmOSMasterView):
         g.set_filter("name", StringFilter)
 
         # owners
+        g.set_label("owners", "Owner")
         g.set_renderer("owners", self.render_owners_for_grid)
 
         # locations
@@ -239,6 +239,7 @@ class AssetMasterView(FarmOSMasterView):
         if self.creating or self.editing:
             f.remove("locations")
         else:
+            f.set_label("locations", "Current Location")
             f.set_node("locations", FarmOSLocationRefs(self.request))
 
         # owners

src/wuttafarm/web/views/logs.py

@@ -34,7 +34,7 @@ from wuttaweb.forms.widgets import WuttaDateTimeWidget
 
 from wuttafarm.web.views import WuttaFarmMasterView
 from wuttafarm.db.model import LogType, Log
-from wuttafarm.web.forms.schema import LogAssetRefs, LogQuantityRefs, LogOwnerRefs
+from wuttafarm.web.forms.schema import AssetRefs, LogQuantityRefs, OwnerRefs
 from wuttafarm.util import get_log_type_enum
 
 
@@ -259,7 +259,7 @@ class LogMasterView(WuttaFarmMasterView):
         if self.creating or self.editing:
             f.remove("assets")  # TODO: need to support this
         else:
-            f.set_node("assets", LogAssetRefs(self.request))
+            f.set_node("assets", AssetRefs(self.request))
             # nb. must explicity declare value for non-standard field
             f.set_default("assets", log.assets)
 
@@ -267,7 +267,7 @@ class LogMasterView(WuttaFarmMasterView):
         if self.creating or self.editing:
             f.remove("groups")  # TODO: need to support this
         else:
-            f.set_node("groups", LogAssetRefs(self.request))
+            f.set_node("groups", AssetRefs(self.request))
             # nb. must explicity declare value for non-standard field
             f.set_default("groups", log.groups)
 
@@ -275,7 +275,7 @@ class LogMasterView(WuttaFarmMasterView):
         if self.creating or self.editing:
             f.remove("locations")  # TODO: need to support this
         else:
-            f.set_node("locations", LogAssetRefs(self.request))
+            f.set_node("locations", AssetRefs(self.request))
             # nb. must explicity declare value for non-standard field
             f.set_default("locations", log.locations)
 
@@ -306,7 +306,7 @@ class LogMasterView(WuttaFarmMasterView):
         if self.creating or self.editing:
             f.remove("owners")  # TODO: need to support this
         else:
-            f.set_node("owners", LogOwnerRefs(self.request))
+            f.set_node("owners", OwnerRefs(self.request))
             # nb. must explicity declare value for non-standard field
             f.set_default("owners", log.owners)