From 1e08db944aa5a2e481e80cf658e76b53c08cf2aa Mon Sep 17 00:00:00 2001
From: Fasand <peter@petermanas.com>
Date: Thu, 4 Jul 2024 12:43:18 +0200
Subject: [PATCH] #679: add parent_contract & description to ContractForm, use
 autocomplete for contracts

---
 .gitignore                                    |  1 +
 Seeder/contracts/forms.py                     |  8 ++++++-
 .../migrations/0007_auto_20240704_1041.py     | 19 +++++++++++++++
 Seeder/contracts/models.py                    |  1 +
 Seeder/contracts/urls.py                      |  1 +
 Seeder/contracts/views.py                     | 24 +++++++++++++++++++
 6 files changed, 53 insertions(+), 1 deletion(-)
 create mode 100644 Seeder/contracts/migrations/0007_auto_20240704_1041.py

diff --git a/.gitignore b/.gitignore
index 8c2fa20b..e055fd2a 100644
--- a/.gitignore
+++ b/.gitignore
@@ -37,6 +37,7 @@ var/
 *.egg-info/
 .installed.cfg
 *.egg
+.cronenv
 
 # PyInstaller
 #  Usually these files are written by a python script from a template
diff --git a/Seeder/contracts/forms.py b/Seeder/contracts/forms.py
index 03bf1b43..851f4e8c 100755
--- a/Seeder/contracts/forms.py
+++ b/Seeder/contracts/forms.py
@@ -1,6 +1,7 @@
 from . import models
 from contracts.constants import CREATIVE_COMMONS_TYPES_CHOICES
 
+from dal import autocomplete
 from django import forms
 
 
@@ -9,10 +10,15 @@ class Meta:
         model = models.Contract
         fields = ('state', 'year', 'contract_number', 'valid_from', 'valid_to',
                   'contract_file', 'creative_commons_type',
+                  'parent_contract', 'description',
                   'in_communication')
         widgets = {
             'creative_commons_type': forms.Select(
-                choices=CREATIVE_COMMONS_TYPES_CHOICES)
+                choices=CREATIVE_COMMONS_TYPES_CHOICES),
+            'description': forms.Textarea(attrs={"rows": 2}),
+            'parent_contract': autocomplete.ModelSelect2(
+                url='contracts:autocomplete',
+            ),
         }
 
 
diff --git a/Seeder/contracts/migrations/0007_auto_20240704_1041.py b/Seeder/contracts/migrations/0007_auto_20240704_1041.py
new file mode 100644
index 00000000..0660b886
--- /dev/null
+++ b/Seeder/contracts/migrations/0007_auto_20240704_1041.py
@@ -0,0 +1,19 @@
+# Generated by Django 2.2.28 on 2024-07-04 10:41
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('contracts', '0006_auto_20201207_1653'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='contract',
+            name='parent_contract',
+            field=models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.DO_NOTHING, related_name='sub_contracts', to='contracts.Contract', verbose_name='Parent'),
+        ),
+    ]
diff --git a/Seeder/contracts/models.py b/Seeder/contracts/models.py
index b625def7..1c551377 100755
--- a/Seeder/contracts/models.py
+++ b/Seeder/contracts/models.py
@@ -107,6 +107,7 @@ class Contract(BaseModel):
 
     parent_contract = models.ForeignKey(
         'self',
+        verbose_name=_("Parent"),
         null=True,
         blank=True,
         on_delete=models.DO_NOTHING,
diff --git a/Seeder/contracts/urls.py b/Seeder/contracts/urls.py
index c77c7231..6260ddd3 100644
--- a/Seeder/contracts/urls.py
+++ b/Seeder/contracts/urls.py
@@ -3,6 +3,7 @@
 
 urlpatterns = [
     path('<int:pk>/detail', Detail.as_view(), name='detail'),
+    path('autocomplete', ContractAutocomplete.as_view(), name='autocomplete'),
     path('<int:pk>/create', Create.as_view(), name='create'),
     path('<int:pk>/assign', Assign.as_view(), name='assign'),
     path('<int:pk>/edit', Edit.as_view(), name='edit'),
diff --git a/Seeder/contracts/views.py b/Seeder/contracts/views.py
index 0b67084f..659dfee9 100755
--- a/Seeder/contracts/views.py
+++ b/Seeder/contracts/views.py
@@ -7,7 +7,10 @@
 from . import constants
 
 from datetime import timedelta, date
+from dal import autocomplete
 
+from django.db.models.functions import Cast
+from django.db.models import CharField
 from django.views.generic import DetailView, FormView
 from django.utils.translation import ugettext_lazy as _
 from django.template.loader import render_to_string
@@ -31,6 +34,27 @@ class Detail(ContractView, DetailView, CommentViewGeneric):
     template_name = 'contract.html'
 
 
+class ContractAutocomplete(autocomplete.Select2QuerySetView):
+
+    def get_queryset(self):
+        if not self.request.user.is_authenticated:
+            return models.Contract.objects.none()
+        # Annotate as strings so we can use icontains
+        qs = models.Contract.objects.all().annotate(
+            contract_number_s=Cast("contract_number", output_field=CharField()),
+            year_s=Cast("year", output_field=CharField())
+        ).order_by("contract_number", "year")
+        # Allow searching by "{contract_number} / {year}"
+        if self.q:
+            q_split = str(self.q or "").replace(" ", "").split("/")
+            if len(q_split) == 1:
+                qs = qs.filter(contract_number_s__icontains=q_split[0])
+            elif len(q_split) == 2:
+                qs = qs.filter(contract_number_s__icontains=q_split[0],
+                               year_s__icontains=q_split[1])
+        return qs
+
+
 class Create(LoginMixin, FormView, ObjectMixinFixed):
     """
     Create contract based on existing source