Added Preset model

app/migrations/0008_preset.py

@@ -0,0 +1,32 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.11.1 on 2017-07-20 14:19
+from __future__ import unicode_literals
+
+import app.models.task
+from django.conf import settings
+import django.contrib.postgres.fields.jsonb
+from django.db import migrations, models
+import django.db.models.deletion
+import django.utils.timezone
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+        ('app', '0007_auto_20170712_1319'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='Preset',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('name', models.CharField(help_text='A label used to describe the preset', max_length=255)),
+                ('options', django.contrib.postgres.fields.jsonb.JSONField(blank=True, default={}, help_text="Options that define this preset (same format as in a Task's options).", validators=[app.models.task.validate_task_options])),
+                ('created_at', models.DateTimeField(default=django.utils.timezone.now, help_text='Creation date')),
+                ('system', models.BooleanField(db_index=True, default=False, help_text='Whether this preset is available to every user in the system or just to its owner.')),
+                ('owner', models.ForeignKey(help_text='The person who owns this preset', on_delete=django.db.models.deletion.CASCADE, to=settings.AUTH_USER_MODEL)),
+            ],
+        ),
+    ]

app/models/__init__.py

@@ -1,3 +1,4 @@
 from .image_upload import ImageUpload, image_directory_path
 from .project import Project
 from .task import Task, validate_task_options, gcp_directory_path
+from .preset import Preset

app/models/preset.py

@@ -0,0 +1,24 @@
+import logging
+
+from django.contrib.auth.models import User
+from django.contrib.postgres.fields import JSONField
+from django.db import models
+from django.utils import timezone
+from .task import validate_task_options
+
+logger = logging.getLogger('app.logger')
+
+
+class Preset(models.Model):
+    owner = models.ForeignKey(User, on_delete=models.CASCADE, help_text="The person who owns this preset")
+    name = models.CharField(max_length=255, help_text="A label used to describe the preset")
+    options = JSONField(default=dict(), blank=True, help_text="Options that define this preset (same format as in a Task's options).",
+                               validators=[validate_task_options])
+    created_at = models.DateTimeField(default=timezone.now, help_text="Creation date")
+    system = models.BooleanField(db_index=True, default=False, help_text="Whether this preset is available to every user in the system or just to its owner.")
+
+    def __str__(self):
+        return self.name
+
+
+