From 688adfac42cdb85e64b04ec592d36c11c3872fce Mon Sep 17 00:00:00 2001
From: PCoder <purple.coder@yahoo.co.uk>
Date: Thu, 11 Nov 2021 23:27:43 +0530
Subject: [PATCH] Fix SpeciesRange admin listing

---
 app/admin.py  | 14 +++++++++++++-
 app/models.py |  2 +-
 2 files changed, 14 insertions(+), 2 deletions(-)

diff --git a/app/admin.py b/app/admin.py
index dc9c987..3798ac4 100644
--- a/app/admin.py
+++ b/app/admin.py
@@ -125,6 +125,18 @@ class PeopleRangeAdmin(admin.ModelAdmin):
         return str(obj.range.name)
 
 
+class SpeciesRangeAdmin(admin.ModelAdmin):
+    model = SpeciesRange
+    search_fields = ['scientific_name__scientific_name', 'range__range_name']
+    list_display = ['scientific_name', 'range_name']
+
+    def scientific_name(self, obj):
+        return str(obj.scientific_name.scientific_name) if obj and obj.scientific_name and obj.scientific_name.scientific_name else '--'
+
+    def range_name(self, obj):
+        return str(obj.range) if obj.range else '--'
+
+
 class RangeCountryAdmin(admin.ModelAdmin):
     model = RangeCountry
     search_fields = ['range__range_name', 'country__short_name']
@@ -178,7 +190,7 @@ admin.site.register(TaxaPeople)
 admin.site.register(ScalesPeople)
 admin.site.register(Species, SpeciesAdmin)
 admin.site.register(PeopleFunction)
-admin.site.register(SpeciesRange)
+admin.site.register(SpeciesRange, SpeciesRangeAdmin)
 admin.site.register(RangesPeople, PeopleRangeAdmin)
 admin.site.register(TaxonRange, TaxonRangeAdmin)
 admin.site.register(PeopleResource)
diff --git a/app/models.py b/app/models.py
index e0f1bf6..e6599c2 100644
--- a/app/models.py
+++ b/app/models.py
@@ -648,7 +648,7 @@ class SpeciesRange(models.Model):
     source_url = models.TextField(blank=True, null=True)
 
     def __str__(self):
-        return self.scientific_name.scientific_name
+        return self.scientific_name.scientific_name if self and self.scientific_name else ' -- '
 
 
 class PeopleRange(models.Model):