feat(farm_fence): fence lines + condition tracking + length compute

farm_fence/README.rst

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+.. image:: https://odoo-community.org/readme-banner-image
+   :target: https://odoo-community.org/get-involved?utm_source=readme
+   :alt: Odoo Community Association
+
+==========
+Farm Fence
+==========
+
+.. 
+   !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+   !! This file is generated by oca-gen-addon-readme !!
+   !! changes will be overwritten.                   !!
+   !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+   !! source digest: sha256:171f636929817374863dbdf0c0d452afdc46cc06088475d08a8ef94f19f96cc9
+   !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+
+.. |badge1| image:: https://img.shields.io/badge/maturity-Alpha-red.png
+    :target: https://odoo-community.org/page/development-status
+    :alt: Alpha
+.. |badge2| image:: https://img.shields.io/badge/license-AGPL--3-blue.png
+    :target: http://www.gnu.org/licenses/agpl-3.0-standalone.html
+    :alt: License: AGPL-3
+.. |badge3| image:: https://img.shields.io/badge/github-ledoent%2Ffarm--pack-lightgray.png?logo=github
+    :target: https://github.com/ledoent/farm-pack/tree/19.0/farm_fence
+    :alt: ledoent/farm-pack
+
+|badge1| |badge2| |badge3|
+
+Tracks fence lines on the farm with type (barbed wire, high-tensile,
+electric, post-and-rail, woven wire, polywire, temporary), height,
+condition (good / fair / needs repair), last-checked date, and an
+auto-computed length in feet from the polyline geometry.
+
+``length_feet`` mirrors the acreage compute in ``farm_field_geo``: the
+WGS84 polyline is reprojected to **EPSG:5070 Conus Albers Equal Area**
+and the geodesic length in meters is converted to US survey feet
+(0.3048006096012192 m/ft). The number matches what NRCS would report for
+the same fence line in a rangeland improvement filing.
+
+Repairs-needed bubble to the top of every list and grouped kanban
+because ``_order`` uses a stored computed ``condition_rank`` integer
+mirroring the selection — a naive string DESC would put "good" above
+"fair" (alpha order).
+
+Field link is optional (``ondelete="set null"``) so a perimeter fence
+spanning multiple fields keeps its history even when one field is
+archived or deleted.
+
+.. IMPORTANT::
+   This is an alpha version, the data model and design can change at any time without warning.
+   Only for development or testing purpose, do not use in production.
+   `More details on development status <https://odoo-community.org/page/development-status>`_
+
+**Table of contents**
+
+.. contents::
+   :local:
+
+Usage
+=====
+
+1. Open Farm → Fences.
+2. Click **New** and pick a fence type + height.
+3. Optional: link a primary field. Leave blank for perimeter fences.
+4. Open the **Fence Line** tab and trace the fence on the map.
+5. Save. **Length (feet)** auto-computes from the polyline.
+
+Day-to-day:
+
+- **Walk-the-fence rotation**: filter by "Not Checked in 6 Months" to
+  plan the next inspection sweep.
+- **Repair triage**: kanban grouped by Condition puts Needs Repair at
+  the top so you can plan the materials run before the weekend.
+- **Materials estimate**: open a fence record, read Length (feet),
+  multiply by the wire / post spec to size the order.
+- **Insurance / NRCS reporting**: switch to the Map view to print a
+  screenshot of the entire fencing system colored by type, with each
+  fence's length in the legend.
+
+Bug Tracker
+===========
+
+Bugs are tracked on `GitHub Issues <https://github.com/ledoent/farm-pack/issues>`_.
+In case of trouble, please check there if your issue has already been reported.
+If you spotted it first, help us to smash it by providing a detailed and welcomed
+`feedback <https://github.com/ledoent/farm-pack/issues/new?body=module:%20farm_fence%0Aversion:%2019.0%0A%0A**Steps%20to%20reproduce**%0A-%20...%0A%0A**Current%20behavior**%0A%0A**Expected%20behavior**>`_.
+
+Do not contact contributors directly about support or help with technical issues.
+
+Credits
+=======
+
+Authors
+-------
+
+* Ledo Enterprises
+
+Contributors
+------------
+
+- Daniel Kendall <dkendall@ledoweb.com>
+
+Maintainers
+-----------
+
+.. |maintainer-dnplkndll| image:: https://github.com/dnplkndll.png?size=40px
+    :target: https://github.com/dnplkndll
+    :alt: dnplkndll
+
+Current maintainer:
+
+|maintainer-dnplkndll| 
+
+This module is part of the `ledoent/farm-pack <https://github.com/ledoent/farm-pack/tree/19.0/farm_fence>`_ project on GitHub.
+
+You are welcome to contribute.

farm_fence/__init__.py

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+from . import models

farm_fence/__manifest__.py

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+{
+    "name": "Farm Fence",
+    "version": "19.0.1.0.0",
+    "summary": "Fence lines + condition tracking + auto-computed length",
+    "author": "Ledo Enterprises, Odoo Community Association (OCA)",
+    "maintainers": ["dnplkndll"],
+    "website": "https://github.com/ledoent/farm-pack",
+    "license": "AGPL-3",
+    "category": "Vertical/Agriculture",
+    # Alpha matches farm_field_geo's chain — OCA check-dev-status gate.
+    "development_status": "Alpha",
+    "depends": [
+        "farm_field_geo",
+        "mail",
+    ],
+    "external_dependencies": {
+        "python": ["pyproj", "shapely"],
+    },
+    "data": [
+        "security/ir.model.access.csv",
+        "views/farm_fence_views.xml",
+        "views/farm_fence_menu.xml",
+    ],
+    "installable": True,
+    "application": False,
+}

farm_fence/models/__init__.py

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+from . import farm_fence

farm_fence/models/farm_fence.py

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+from functools import lru_cache
+
+from pyproj import Transformer
+from shapely.ops import transform as shapely_transform
+
+from odoo import api, fields, models
+
+# US survey foot in meters. Used to convert EPSG:5070 length (m) to feet
+# for display — US farm fencing is universally specified in feet.
+M_PER_US_SURVEY_FOOT = 0.3048006096012192
+
+# Selection keys are descriptive strings (good/fair/repair) for the UI, but
+# alpha-DESC would order "repair > good > fair" — fair-condition fences
+# would hide below good-condition ones. `condition_rank` mirrors the
+# selection so `_order` produces the actual urgency sort.
+_CONDITION_RANK = {"good": 0, "fair": 1, "repair": 2}
+
+
+@lru_cache(maxsize=1)
+def _wgs84_to_albers_conus():
+    """Build the EPSG:4326 → EPSG:5070 transformer once and reuse it.
+
+    Same approach farm_field_geo uses for acreage — Albers reprojection
+    gives a length number that matches what NRCS reports for the same
+    fence in a rangeland-improvement filing.
+    """
+    return Transformer.from_crs("EPSG:4326", "EPSG:5070", always_xy=True).transform
+
+
+class FarmFence(models.Model):
+    _name = "farm.fence"
+    _description = "Fence"
+    _inherit = ["mail.thread"]
+    # Repairs-needed bubble to the top.
+    _order = "condition_rank desc, name"
+    # Enforces field_id.company_id == fence.company_id at write time (only
+    # checked when field_id is set; perimeter fences with a null field_id
+    # pass through).
+    _check_company_auto = True
+
+    name = fields.Char(required=True, tracking=True)
+    active = fields.Boolean(
+        default=True,
+        help="Untick to archive fences that have been removed or replaced. "
+        "Their geometry and history stay on the field map's archived view.",
+    )
+    field_id = fields.Many2one(
+        "farm.field",
+        string="Primary Field",
+        help="Field this fence belongs to. Leave blank for perimeter fences "
+        "that span multiple fields.",
+        ondelete="set null",
+        check_company=True,
+    )
+    geom = fields.GeoLine(
+        string="Fence Line",
+        srid=4326,
+        help="Polyline tracing the fence. Length and the map view come from "
+        "this geometry. base_geoengine 19.0 names the type GeoLine (no "
+        "'String' suffix).",
+    )
+    length_feet = fields.Float(
+        compute="_compute_length_feet",
+        store=True,
+        digits=(10, 1),
+        help="Auto-computed from the polyline length, reprojected to "
+        "EPSG:5070 (Albers Equal Area) and converted from meters to US "
+        "survey feet.",
+    )
+    fence_type = fields.Selection(
+        [
+            ("barbed_wire", "Barbed Wire"),
+            ("high_tensile", "High-Tensile"),
+            ("electric", "Electric"),
+            ("post_rail", "Post & Rail"),
+            ("woven_wire", "Woven Wire"),
+            ("polywire", "Polywire (rotational)"),
+            ("temporary", "Temporary"),
+        ],
+        required=True,
+        tracking=True,
+    )
+    height_inches = fields.Float(digits=(5, 1))
+    condition = fields.Selection(
+        [
+            ("good", "Good"),
+            ("fair", "Fair"),
+            ("repair", "Needs Repair"),
+        ],
+        default="good",
+        required=True,
+        tracking=True,
+    )
+    condition_rank = fields.Integer(
+        compute="_compute_condition_rank",
+        store=True,
+        index=True,
+        help="Numeric mirror of condition so _order produces an urgency sort "
+        "(string DESC on selection keys would put 'good' above 'fair').",
+    )
+    last_checked_date = fields.Date(tracking=True)
+    notes = fields.Text()
+    company_id = fields.Many2one(
+        "res.company",
+        required=True,
+        default=lambda self: self.env.company,
+        index=True,
+    )
+
+    @api.depends("condition")
+    def _compute_condition_rank(self):
+        for rec in self:
+            rec.condition_rank = _CONDITION_RANK.get(rec.condition, 0)
+
+    @api.depends("geom")
+    def _compute_length_feet(self):
+        # base_geoengine returns the field as a plain shapely geometry on
+        # read; shapely has no .transform() method. Reproject via pyproj +
+        # shapely.ops.transform before measuring length. Mirrors the
+        # acreage compute in farm_field_geo.
+        transformer = _wgs84_to_albers_conus()
+        for rec in self:
+            if not rec.geom:
+                rec.length_feet = 0.0
+                continue
+            projected = shapely_transform(transformer, rec.geom)
+            rec.length_feet = projected.length / M_PER_US_SURVEY_FOOT

farm_fence/pyproject.toml

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+[build-system]
+requires = ["whool"]
+build-backend = "whool.buildapi"

farm_fence/readme/CONTRIBUTORS.md

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+- Daniel Kendall <dkendall@ledoweb.com>

farm_fence/readme/DESCRIPTION.md

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+Tracks fence lines on the farm with type (barbed wire, high-tensile,
+electric, post-and-rail, woven wire, polywire, temporary), height,
+condition (good / fair / needs repair), last-checked date, and an
+auto-computed length in feet from the polyline geometry.
+
+`length_feet` mirrors the acreage compute in `farm_field_geo`: the
+WGS84 polyline is reprojected to **EPSG:5070 Conus Albers Equal Area**
+and the geodesic length in meters is converted to US survey feet
+(0.3048006096012192 m/ft). The number matches what NRCS would report
+for the same fence line in a rangeland improvement filing.
+
+Repairs-needed bubble to the top of every list and grouped kanban
+because `_order` uses a stored computed `condition_rank` integer
+mirroring the selection — a naive string DESC would put "good" above
+"fair" (alpha order).
+
+Field link is optional (`ondelete="set null"`) so a perimeter fence
+spanning multiple fields keeps its history even when one field is
+archived or deleted.

farm_fence/readme/USAGE.md

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+1. Open Farm → Fences.
+2. Click **New** and pick a fence type + height.
+3. Optional: link a primary field. Leave blank for perimeter fences.
+4. Open the **Fence Line** tab and trace the fence on the map.
+5. Save. **Length (feet)** auto-computes from the polyline.
+
+Day-to-day:
+
+- **Walk-the-fence rotation**: filter by "Not Checked in 6 Months" to plan
+  the next inspection sweep.
+- **Repair triage**: kanban grouped by Condition puts Needs Repair at the
+  top so you can plan the materials run before the weekend.
+- **Materials estimate**: open a fence record, read Length (feet), multiply
+  by the wire / post spec to size the order.
+- **Insurance / NRCS reporting**: switch to the Map view to print a screenshot
+  of the entire fencing system colored by type, with each fence's length
+  in the legend.

farm_fence/security/ir.model.access.csv

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+id,name,model_id:id,group_id:id,perm_read,perm_write,perm_create,perm_unlink
+access_farm_fence_user,farm.fence user,model_farm_fence,base.group_user,1,1,1,1