From 88e9b0e05dcce29524ee578442994494e11c5a1e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Stephan=20B=C3=B6sch-Plepelits?= <skunk@xover.mud.at>
Date: Fri, 1 Feb 2019 19:16:12 +0100
Subject: [PATCH] buildings-start_date: if 'building:start_date' is defined,
 use this

---
 buildings-start_date.json | 17 ++++++++++-------
 1 file changed, 10 insertions(+), 7 deletions(-)

diff --git a/buildings-start_date.json b/buildings-start_date.json
index d2c3ffe9a..2b0759d14 100644
--- a/buildings-start_date.json
+++ b/buildings-start_date.json
@@ -16,8 +16,11 @@
     },
     "feature": {
         "pre": [
-            "{% if tags.start_date %}",
-            "  {% set value = tags.start_date|osmParseDate %}",
+            "{% set start_date = tags.start_date %}",
+            "{% if attribute(tags, 'building:start_date') %}{% set start_date = attribute(tags, 'building:start_date') %}{% endif %}",
+            "",
+            "{% if start_date %}",
+            "  {% set value = start_date|osmParseDate %}",
             "  {% if value and value[0] and value[1] %}",
             "    {% set value = (value[1] - value[0]) / 2 + value[0] %}",
             "  {% elseif value and value[0] %}",
@@ -44,15 +47,15 @@
             "{% endif %}"
         ],
         "description": [
-            "{% if tags.start_date %}",
-            "{{ tags.start_date|osmFormatDate({ format: 'short' }) }}",
+            "{% if start_date %}",
+            "{{ start_date|osmFormatDate({ format: 'short' }) }}",
             "{% else %}",
             "{{ trans('unknown') }}",
             "{% endif %}"
         ],
         "popupDescription": [
-            "{% if tags.start_date %}",
-            "{{ tags.start_date|osmFormatDate }}",
+            "{% if start_date %}",
+            "{{ start_date|osmFormatDate }}",
             "{% else %}",
             "{{ trans('unknown') }}",
             "{% endif %}"
@@ -61,7 +64,7 @@
         "listMarkerSymbol": "{{ markerPolygon({ \"fillColor\": color, \"fillOpacity\": 0.8, \"width\": 1, \"color\": \"#000000\" })|raw }}",
         "priority": [
             "{% set p = 100 %}",
-            "{% if tags.start_date %}{% set p = p - 20 %}{% endif %}",
+            "{% if start_date %}{% set p = p - 20 %}{% endif %}",
             "{% if tags.name %}{% set p = p - 10 %}{% endif %}",
             "{% if tags.amenity %}{% set p = p - 1 %}{% endif %}",
             "{% if tags.historic %}{% set p = p - 1 %}{% endif %}",