From ad4b9dc86bd90f8324049efc346aabc443bb015d Mon Sep 17 00:00:00 2001
From: Guido Longoni <guido.longoni@briq.it>
Date: Wed, 5 Jul 2023 14:33:56 +0200
Subject: [PATCH] Autoselect (senza propagazione su altri campi)

---
 django/contatti_app/drilldown_autocomplete.py |  8 +++++++-
 django/static/admin/js/autocomplete.js        | 11 +++++++++--
 2 files changed, 16 insertions(+), 3 deletions(-)

diff --git a/django/contatti_app/drilldown_autocomplete.py b/django/contatti_app/drilldown_autocomplete.py
index b94a4e0..83e360e 100644
--- a/django/contatti_app/drilldown_autocomplete.py
+++ b/django/contatti_app/drilldown_autocomplete.py
@@ -61,11 +61,14 @@ class DrillDownAutocompleteJsonView(AutocompleteJsonView):
     def get_queryset(self):
         """Return queryset based on ModelAdmin.get_search_results()."""
         qs = super().get_queryset().only()
+        self.autoselect = False
         # print('Prima:',qs.query,'\n\n')
         if hasattr(self, 'linkedfields'):
             drilldown_filter_conditions = Q(**self.drilldown_filter_data)
             qs = qs.annotate(ddok=Max(Case(When(drilldown_filter_conditions, then=Value(
                 1)), default=Value(0)))).order_by('-ddok', *qs.query.order_by)
+            if qs.filter(ddok=1).count() == 1:
+                self.autoselect = True
             # print('Dopo:',qs.query,'\n\n')
         else:
             qs = qs.annotate(ddok=Value(1))
@@ -76,7 +79,10 @@ class DrillDownAutocompleteJsonView(AutocompleteJsonView):
         Convert the provided model object to a dictionary that is added to the
         results list.
         """
-        return {"id": str(getattr(obj, to_field_name)), "text": str(obj), "ddok": obj.ddok}
+        out = {"id": str(getattr(obj, to_field_name)), "text": str(obj), "ddok": obj.ddok}
+        if self.autoselect and obj.ddok == 1:
+            out['autoselect'] = True
+        return out
 
 
 class DrillDownAutocompleteMixin(AutocompleteMixin):
diff --git a/django/static/admin/js/autocomplete.js b/django/static/admin/js/autocomplete.js
index 9343219..3ebaa75 100644
--- a/django/static/admin/js/autocomplete.js
+++ b/django/static/admin/js/autocomplete.js
@@ -23,8 +23,8 @@
                                 if (linkedfields.hasOwnProperty(i)) {
                                     var remote_field = linkedfields[i];
                                     var field_id = element.dataset.select2Id;
-                                    var remote_id = field_id.slice(0,field_id.length-field_name.length)+remote_field;
-                                    var value = document.querySelectorAll('[data-select2-id=' + remote_id +'].admin-autocomplete')[0].value;
+                                    var remote_id = field_id.slice(0, field_id.length - field_name.length) + remote_field;
+                                    var value = document.querySelectorAll('[data-select2-id=' + remote_id + '].admin-autocomplete')[0].value;
                                     if (value !== '') {
                                         //console.log(field + '=' + value);
                                         linkedfields_obj[remote_field] = value;
@@ -49,6 +49,13 @@
                             styleClass = 'drilldown_ko';
                         }
                         container.classList.add(styleClass);
+                        if (item.hasOwnProperty('autoselect')) {
+                            if ($(element).select2('data').length == 0) {
+                                $(element).select2("trigger", "select", {
+                                    data: item
+                                })
+                            }
+                        }
                     }
                     return $('<span class="' + styleClass + '"></span>').text(item.text);
                 }