Make Timer instance.start field editable.

core/forms.py

@@ -128,7 +128,13 @@ class SleepForm(forms.ModelForm):
 class TimerForm(forms.ModelForm):
     class Meta:
         model = Timer
-        fields = ['name']
+        fields = ['name', 'start']
+        widgets = {
+            'start': forms.DateTimeInput(attrs={
+                'class': 'datepicker-input',
+                'data-target': '#datetimepicker_start',
+            })
+        }
 
     def __init__(self, *args, **kwargs):
         self.user = kwargs.pop('user')

core/migrations/0002_auto_20171028_1257.py

@@ -0,0 +1,21 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.11.6 on 2017-10-28 16:57
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+import django.utils.timezone
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('core', '0001_initial'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='timer',
+            name='start',
+            field=models.DateTimeField(default=django.utils.timezone.now, verbose_name='Start Time'),
+        ),
+    ]

core/models.py

@@ -141,7 +141,11 @@ class Sleep(models.Model):
 class Timer(models.Model):
     model_name = 'timer'
     name = models.CharField(max_length=255, null=True, blank=True)
-    start = models.DateTimeField(auto_now_add=True)
+    start = models.DateTimeField(
+        default=timezone.now,
+        blank=False,
+        verbose_name='Start Time'
+    )
     end = models.DateTimeField(blank=True, null=True, editable=False)
     duration = models.DurationField(null=True, editable=False)
     active = models.BooleanField(default=True, editable=False)

core/templates/core/timer_form.html

@@ -20,4 +20,14 @@
         <h1>Start Timer</h1>
     {% endif %}
     {% include 'babybuddy/form.html' %}
+{% endblock %}
+
+{% block javascript %}
+    <script type="text/javascript">
+        $(function () {
+            $('#datetimepicker_start').datetimepicker({
+                format: 'YYYY-MM-DD HH:mm:ss'
+            });
+        });
+    </script>
 {% endblock %}

core/tests/tests_forms.py

@@ -1,10 +1,11 @@
 # -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
-from django.test import TestCase
-from django.test import Client as HttpClient
 from django.contrib.auth.models import User
 from django.core.management import call_command
+from django.test import TestCase
+from django.test import Client as HttpClient
+from django.utils import timezone
 
 from faker import Factory
 
@@ -89,9 +90,24 @@ class FormsTestCase(TestCase):
     def test_timer_forms(self):
         timer = models.Timer.objects.create(user=self.user)
         timer.save()
-        # Post to test custom get_success_url() method.
-        page = self.c.post('/timer/{}/edit/'.format(timer.id), {'name': 'New'})
+
+        params = {
+            'name': 'New',
+            'start': timer.start.strftime('%Y-%m-%d %H:%M:%S')
+        }
+        page = self.c.post('/timer/{}/edit/'.format(timer.id), params)
         self.assertEqual(page.status_code, 302)
+        timer.refresh_from_db()
+        self.assertEqual(timer.name, params['name'])
+
+        # Test changing the timer start time.
+        start_time = timer.start - timezone.timedelta(hours=1)
+        params['start'] = timezone.localtime(start_time).strftime(
+            '%Y-%m-%d %H:%M:%S')
+        page = self.c.post('/timer/{}/edit/'.format(timer.id), params)
+        self.assertEqual(page.status_code, 302)
+        timer.refresh_from_db()
+        self.assertEqual(timer.start, start_time)
 
     def test_tummytime_forms(self):
         params = {