stat part 1

progress/migrations/0011_auto_20180427_1213.py

@@ -0,0 +1,20 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.11.6 on 2018-04-27 12:13
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('progress', '0010_progress_exp_date'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='progresslesson',
+            name='last_update',
+            field=models.DateTimeField(verbose_name='Дата последней проверки'),
+        ),
+    ]

progress/migrations/0012_auto_20180427_1220.py

@@ -0,0 +1,20 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.11.6 on 2018-04-27 12:20
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('progress', '0011_auto_20180427_1213'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='progresslesson',
+            name='last_update',
+            field=models.DateTimeField(auto_now_add=True, verbose_name='Дата последней здачи'),
+        ),
+    ]

progress/migrations/0013_progresslesson_dif_check_timestamps.py

@@ -0,0 +1,22 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.11.6 on 2018-04-27 12:26
+from __future__ import unicode_literals
+
+import django.contrib.postgres.fields
+from django.db import migrations, models
+import lms.tools
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('progress', '0012_auto_20180427_1220'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='progresslesson',
+            name='dif_check_timestamps',
+            field=django.contrib.postgres.fields.ArrayField(base_field=models.IntegerField(verbose_name='Время проверки'), default=lms.tools.get_empty_list, size=None, verbose_name='Временные интервалы проверок'),
+        ),
+    ]

progress/models.py

@@ -3,6 +3,7 @@ from django.contrib.postgres.fields import ArrayField
 from django.db import models
 from model_utils import Choices
 
+from django.utils import timezone
 from lms.tools import get_empty_list
 
 
@@ -55,8 +56,30 @@ class ProgressLesson(models.Model):
     finish_date = models.DateTimeField(verbose_name='Дата зачтения задания', blank=True, null=True)
     start_date = models.DateTimeField(verbose_name='Дата начала прохождения задания', auto_now_add=True)
     status = models.CharField(choices=STATUSES, default=STATUSES.start, max_length=20)
-    last_update = models.DateTimeField(verbose_name='Дата последнего изменения', auto_now=True)
+    last_update = models.DateTimeField(verbose_name='Дата последней здачи', auto_now_add=True)
     comment_tokens = ArrayField(models.UUIDField(verbose_name="Токен комента", editable=False), default=get_empty_list)
+    dif_check_timestamps = ArrayField(
+        models.IntegerField(
+            verbose_name="Время проверки"
+        ),
+        verbose_name='Временные интервалы проверок',
+        default=get_empty_list,
+    )
+
+    def __init__(self, *args, **kwargs):
+        super(ProgressLesson, self).__init__(*args, **kwargs)
+        self.old_status = self.status
+
+    def save(self, force_insert=False, force_update=False, **kwargs):
+        if self.status == 'wait' and (self.old_status == 'start' or self.old_status == 'fail'):
+            self.last_update = timezone.now()
+
+        if self.old_status == 'wait' and (self.status == 'fail' or self.status == 'done'):
+            dif = int(timezone.now().timestamp() - self.last_update.timestamp())
+            self.dif_check_timestamps.append(dif)
+
+        super(ProgressLesson, self).save(force_insert, force_update, **kwargs)
+        self.old_status = self.status
 
     def __str__(self):
         return self.progress.user.email