allow admin to enable/disable sorting

.env.template

@@ -128,4 +128,5 @@ REVERSE_PROXY_AUTH=0
 # however, when doing large imports of recipes that will create new objects, can increase total run time by 5-10x
 # Disabling SORT_TREE_BY_NAME (setting value to 0) will store objects unsorted, but will substantially increase speed of imports.
 # Keywords and Food can be manually sorted by name in Admin
+# This value can also be temporarily changed in Admin, it will revert the next time the application is started
 # SORT_TREE_BY_NAME=0

cookbook/admin.py

@@ -89,19 +89,34 @@ class SyncLogAdmin(admin.ModelAdmin):
 admin.site.register(SyncLog, SyncLogAdmin)
 
 
+@admin.action(description='Temporarily ENABLE sorting on Foods and Keywords.')
+def enable_tree_sorting(modeladmin, request, queryset):
+    Food.node_order_by = ['name']
+    Keyword.node_order_by = ['name']
+    with scopes_disabled():
+        Food.fix_tree(fix_paths=True)
+        Keyword.fix_tree(fix_paths=True)
+
+
+@admin.action(description='Temporarily DISABLE sorting on Foods and Keywords.')
+def disable_tree_sorting(modeladmin, request, queryset):
+    Food.node_order_by = []
+    Keyword.node_order_by = []
+
+
 @admin.action(description='Fix problems and sort tree by name')
 def sort_tree(modeladmin, request, queryset):
     orginal_value = modeladmin.model.node_order_by[:]
     modeladmin.model.node_order_by = ['name']
     with scopes_disabled():
-        Keyword.fix_tree(fix_paths=True)
+        modeladmin.model.fix_tree(fix_paths=True)
     modeladmin.model.node_order_by = orginal_value
 
 
 class KeywordAdmin(TreeAdmin):
     form = movenodeform_factory(Keyword)
     ordering = ('space', 'path',)
-    actions = [sort_tree]
+    actions = [sort_tree, enable_tree_sorting, disable_tree_sorting]
 
 
 admin.site.register(Keyword, KeywordAdmin)
@@ -148,7 +163,7 @@ admin.site.register(Unit)
 class FoodAdmin(TreeAdmin):
     form = movenodeform_factory(Keyword)
     ordering = ('space', 'path',)
-    actions = [sort_tree]
+    actions = [sort_tree, enable_tree_sorting, disable_tree_sorting]
 
 
 admin.site.register(Food, FoodAdmin)

recipes/wsgi.py

@@ -10,9 +10,18 @@ https://docs.djangoproject.com/en/2.0/howto/deployment/wsgi/
 import os
 
 from django.core.wsgi import get_wsgi_application
+from django_scopes import scopes_disabled
+from cookbook.models import Food, Keyword
 
 os.environ.setdefault("DJANGO_SETTINGS_MODULE", "recipes.settings")
 
+# run fix tree here solves 2 problems:
+# 1 if tree sorting is changed from unsorted to sorted ensures that objects are sorted
+# 2 if any condition caused the tree to be in an inconsistent state this will fix most problems
+with scopes_disabled():
+    Food.fix_tree(fix_paths=True)
+    Keyword.fix_tree(fix_paths=True)
+
 _application = get_wsgi_application()