Code cleanups

PEP8 cleanups. Add keyword arguments.

Signed-off-by: Roberto Rosario <roberto.rosario.gonzalez@gmail.com>

mayan/apps/documents/migrations/0001_initial.py

@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import models, migrations

mayan/apps/documents/migrations/0002_auto_20150608_1902.py

@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import migrations

mayan/apps/documents/migrations/0003_auto_20150608_1915.py

@@ -1,14 +1,11 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
-import uuid 
+import uuid
 
 from django.db import models, migrations
 from django.core.files.storage import FileSystemStorage
 from django.utils.encoding import force_text
 
-import mayan.apps.documents.models
-
 
 class Migration(migrations.Migration):
 

mayan/apps/documents/migrations/0004_auto_20150616_1930.py

@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import migrations

mayan/apps/documents/migrations/0005_auto_20150617_0358.py

@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import migrations

mayan/apps/documents/migrations/0006_remove_documentpage_content_old.py

@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import migrations

mayan/apps/documents/migrations/0007_remove_documentpage_page_label.py

@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import migrations

mayan/apps/documents/migrations/0008_auto_20150624_0520.py

@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import models, migrations

mayan/apps/documents/migrations/0009_document_in_trash.py

@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import models, migrations

mayan/apps/documents/migrations/0010_auto_20150704_0054.py

@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import models, migrations

mayan/apps/documents/migrations/0011_auto_20150704_0508.py

@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import models, migrations

mayan/apps/documents/migrations/0012_auto_20150705_0347.py

@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import models, migrations

mayan/apps/documents/migrations/0013_document_is_stub.py

@@ -1,11 +1,10 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import models, migrations
 
 
-def make_existing_documents_not_stubs(apps, schema_editor):
-    Document = apps.get_model('documents', 'Document')
+def operation_make_existing_documents_not_stubs(apps, schema_editor):
+    Document = apps.get_model(app_label='documents', model_name='Document')
 
     for document in Document.objects.using(schema_editor.connection.alias).all():
         document.is_stub = False
@@ -27,5 +26,5 @@ class Migration(migrations.Migration):
             ),
             preserve_default=True,
         ),
-        migrations.RunPython(make_existing_documents_not_stubs),
+        migrations.RunPython(code=operation_make_existing_documents_not_stubs),
     ]

mayan/apps/documents/migrations/0014_auto_20150708_0107.py

@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import migrations

mayan/apps/documents/migrations/0015_auto_20150708_0113.py

@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import models, migrations

mayan/apps/documents/migrations/0016_auto_20150708_0325.py

@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import models, migrations

mayan/apps/documents/migrations/0017_auto_20150714_0056.py

@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import models, migrations

mayan/apps/documents/migrations/0018_auto_20150714_2227.py

@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import models, migrations

mayan/apps/documents/migrations/0019_auto_20150714_2232.py

@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import models, migrations

mayan/apps/documents/migrations/0020_auto_20150714_2233.py

@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import models, migrations

mayan/apps/documents/migrations/0021_auto_20150714_2238.py

@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import models, migrations

mayan/apps/documents/migrations/0022_auto_20150715_0258.py

@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import models, migrations

mayan/apps/documents/migrations/0023_auto_20150715_0259.py

@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import models, migrations

mayan/apps/documents/migrations/0024_auto_20150715_0714.py

@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import models, migrations

mayan/apps/documents/migrations/0025_auto_20150718_0742.py

@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 import pycountry
@@ -6,8 +5,8 @@ import pycountry
 from django.db import migrations
 
 
-def change_bibliographic_to_terminology(apps, schema_editor):
-    Document = apps.get_model('documents', 'Document')
+def operation_change_bibliographic_to_terminology(apps, schema_editor):
+    Document = apps.get_model(app_label='documents', model_name='Document')
 
     for document in Document.objects.using(schema_editor.connection.alias).all():
         try:
@@ -31,5 +30,5 @@ class Migration(migrations.Migration):
     ]
 
     operations = [
-        migrations.RunPython(change_bibliographic_to_terminology),
+        migrations.RunPython(code=operation_change_bibliographic_to_terminology),
     ]

mayan/apps/documents/migrations/0027_auto_20150824_0702.py

@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import models, migrations

mayan/apps/documents/migrations/0028_newversionblock.py

@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import models, migrations

mayan/apps/documents/migrations/0030_auto_20160309_1837.py

@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import migrations, models

mayan/apps/documents/migrations/0031_convert_uuid.py

@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 import uuid
@@ -6,8 +5,8 @@ import uuid
 from django.db import migrations
 
 
-def convert_uuid_to_hex(apps, schema_editor):
-    Document = apps.get_model('documents', 'Document')
+def operation_convert_uuid_to_hex(apps, schema_editor):
+    Document = apps.get_model(app_label='documents', model_name='Document')
 
     for document in Document.objects.using(schema_editor.connection.alias).all():
         document.uuid = uuid.UUID(document.uuid).hex
@@ -21,5 +20,5 @@ class Migration(migrations.Migration):
     ]
 
     operations = [
-        migrations.RunPython(convert_uuid_to_hex),
+        migrations.RunPython(code=operation_convert_uuid_to_hex),
     ]

mayan/apps/documents/migrations/0032_auto_20160315_0537.py

@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 import uuid
@@ -6,7 +5,7 @@ import uuid
 from django.db import connection, migrations, models
 
 
-def forwards(apps, schema_editor):
+def operation_forwards(apps, schema_editor):
     if not schema_editor.connection.vendor == 'oracle':
         # Skip this migration for Oracle
         # GitHub issue #251
@@ -23,7 +22,7 @@ class Migration(migrations.Migration):
     ]
 
     operations = [
-        migrations.RunPython(forwards)
+        migrations.RunPython(code=operation_forwards)
     ]
 
     def __init__(self, *args, **kwargs):

mayan/apps/documents/migrations/0033_auto_20160325_0052.py

@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import migrations

mayan/apps/documents/migrations/0034_auto_20160509_2321.py

@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import migrations, models
@@ -14,11 +13,20 @@ class Migration(migrations.Migration):
         migrations.AlterField(
             model_name='document',
             name='in_trash',
-            field=models.BooleanField(default=False, verbose_name='In trash?', db_index=True, editable=False),
+            field=models.BooleanField(
+                default=False, verbose_name='In trash?', db_index=True,
+                editable=False
+            ),
         ),
         migrations.AlterField(
             model_name='document',
             name='is_stub',
-            field=models.BooleanField(default=True, editable=False, help_text='A document stub is a document with an entry on the database but no file uploaded. This could be an interrupted upload or a deferred upload via the API.', verbose_name='Is stub?', db_index=True),
+            field=models.BooleanField(
+                default=True, editable=False,
+                help_text='A document stub is a document with an entry on '
+                'the database but no file uploaded. This could be an '
+                'interrupted upload or a deferred upload via the API.',
+                verbose_name='Is stub?', db_index=True
+            ),
         ),
     ]

mayan/apps/documents/migrations/0035_auto_20161102_0633.py

@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
 from django.db import migrations, models

mayan/apps/documents/migrations/0036_auto_20161222_0534.py

@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-# Generated by Django 1.9.11 on 2016-12-22 05:34
 from __future__ import unicode_literals
 
 from django.db import migrations

mayan/apps/documents/migrations/0037_auto_20161231_0617.py

@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-# Generated by Django 1.10.4 on 2016-12-31 06:17
 from __future__ import unicode_literals
 
 from django.db import migrations, models
@@ -15,6 +13,9 @@ class Migration(migrations.Migration):
         migrations.AlterField(
             model_name='document',
             name='language',
-            field=models.CharField(blank=True, default='eng', max_length=8, verbose_name='Language'),
+            field=models.CharField(
+                blank=True, default='eng', max_length=8,
+                verbose_name='Language'
+            ),
         ),
     ]

mayan/apps/documents/migrations/0038_auto_20170705_2008.py

@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-# Generated by Django 1.10.7 on 2017-07-05 20:08
 from __future__ import unicode_literals
 
 from django.db import migrations, models

mayan/apps/documents/migrations/0039_duplicateddocument.py

@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-# Generated by Django 1.10.7 on 2017-07-06 03:30
 from __future__ import unicode_literals
 
 from django.db import migrations, models

mayan/apps/documents/migrations/0040_auto_20170725_1111.py

@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-# Generated by Django 1.10.7 on 2017-07-25 11:11
 from __future__ import unicode_literals
 
 from django.db import migrations
@@ -14,6 +12,9 @@ class Migration(migrations.Migration):
     operations = [
         migrations.AlterModelOptions(
             name='documentversion',
-            options={'ordering': ('timestamp',), 'verbose_name': 'Document version', 'verbose_name_plural': 'Document version'},
+            options={
+                'ordering': ('timestamp',), 'verbose_name': 'Document version',
+                'verbose_name_plural': 'Document version'
+            },
         ),
     ]

mayan/apps/documents/migrations/0041_auto_20170823_1855.py

@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-# Generated by Django 1.10.7 on 2017-08-23 18:55
 from __future__ import unicode_literals
 
 from django.db import migrations, models

mayan/apps/documents/migrations/0042_auto_20180403_0702.py

@@ -1,13 +1,11 @@
 from __future__ import unicode_literals
 
-import uuid 
+import uuid
 
 import django.core.files.storage
 from django.db import migrations, models
 from django.utils.encoding import force_text
 
-import mayan.apps.documents.models
-
 
 class Migration(migrations.Migration):
 

mayan/apps/documents/migrations/0043_auto_20180429_0759.py

@@ -6,8 +6,6 @@ import django.core.files.storage
 from django.db import migrations, models
 from django.utils.encoding import force_text
 
-import mayan.apps.documents.models
-
 
 class Migration(migrations.Migration):
 
@@ -19,7 +17,10 @@ class Migration(migrations.Migration):
         migrations.AlterField(
             model_name='documentversion',
             name='encoding',
-            field=models.CharField(blank=True, editable=False, max_length=64, null=True, verbose_name='Encoding'),
+            field=models.CharField(
+                blank=True, editable=False, max_length=64, null=True,
+                verbose_name='Encoding'
+            ),
         ),
         migrations.AlterField(
             model_name='documentversion',
@@ -33,6 +34,9 @@ class Migration(migrations.Migration):
         migrations.AlterField(
             model_name='documentversion',
             name='mimetype',
-            field=models.CharField(blank=True, editable=False, max_length=255, null=True, verbose_name='MIME type'),
+            field=models.CharField(
+                blank=True, editable=False, max_length=255, null=True,
+                verbose_name='MIME type'
+            ),
         ),
     ]

mayan/apps/documents/migrations/0044_auto_20180823_0452.py

@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-# Generated by Django 1.11.11 on 2018-08-23 04:52
 from __future__ import unicode_literals
 
 from django.conf import settings
@@ -18,7 +16,12 @@ class Migration(migrations.Migration):
         migrations.CreateModel(
             name='FavoriteDocument',
             fields=[
-                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                (
+                    'id', models.AutoField(
+                        auto_created=True, primary_key=True, serialize=False,
+                        verbose_name='ID'
+                    )
+                ),
             ],
             options={
                 'verbose_name': 'Favorite document',
@@ -27,21 +30,35 @@ class Migration(migrations.Migration):
         ),
         migrations.AlterModelOptions(
             name='document',
-            options={'ordering': ('label',), 'verbose_name': 'Document', 'verbose_name_plural': 'Documents'},
+            options={
+                'ordering': ('label',), 'verbose_name': 'Document',
+                'verbose_name_plural': 'Documents'
+            },
         ),
         migrations.AlterField(
             model_name='recentdocument',
             name='document',
-            field=models.ForeignKey(editable=False, on_delete=django.db.models.deletion.CASCADE, related_name='recent', to='documents.Document', verbose_name='Document'),
+            field=models.ForeignKey(
+                editable=False, on_delete=django.db.models.deletion.CASCADE,
+                related_name='recent', to='documents.Document',
+                verbose_name='Document'
+            ),
         ),
         migrations.AddField(
             model_name='favoritedocument',
             name='document',
-            field=models.ForeignKey(editable=False, on_delete=django.db.models.deletion.CASCADE, related_name='favorites', to='documents.Document', verbose_name='Document'),
+            field=models.ForeignKey(
+                editable=False, on_delete=django.db.models.deletion.CASCADE,
+                related_name='favorites', to='documents.Document',
+                verbose_name='Document'
+            ),
         ),
         migrations.AddField(
             model_name='favoritedocument',
             name='user',
-            field=models.ForeignKey(editable=False, on_delete=django.db.models.deletion.CASCADE, to=settings.AUTH_USER_MODEL, verbose_name='User'),
+            field=models.ForeignKey(
+                editable=False, on_delete=django.db.models.deletion.CASCADE,
+                to=settings.AUTH_USER_MODEL, verbose_name='User'
+            ),
         ),
     ]

mayan/apps/documents/migrations/0045_auto_20180917_0645.py

@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-# Generated by Django 1.11.11 on 2018-09-17 06:45
 from __future__ import unicode_literals
 
 from django.db import migrations, models
@@ -16,66 +14,120 @@ class Migration(migrations.Migration):
         migrations.AlterField(
             model_name='document',
             name='date_added',
-            field=models.DateTimeField(auto_now_add=True, db_index=True, help_text='The server date and time when the document was finally processed and added to the system.', verbose_name='Added'),
+            field=models.DateTimeField(
+                auto_now_add=True, db_index=True, help_text='The server '
+                'date and time when the document was finally processed '
+                'and added to the system.', verbose_name='Added'
+            ),
         ),
         migrations.AlterField(
             model_name='document',
             name='deleted_date_time',
-            field=models.DateTimeField(blank=True, help_text='The server date and time when the document was moved to the trash.', null=True, verbose_name='Date and time trashed'),
+            field=models.DateTimeField(
+                blank=True, help_text='The server date and time when the '
+                'document was moved to the trash.', null=True,
+                verbose_name='Date and time trashed'
+            ),
         ),
         migrations.AlterField(
             model_name='document',
             name='description',
-            field=models.TextField(blank=True, default='', help_text='An optional short text describing a document.', verbose_name='Description'),
+            field=models.TextField(
+                blank=True, default='', help_text='An optional short text '
+                'describing a document.', verbose_name='Description'
+            ),
         ),
         migrations.AlterField(
             model_name='document',
             name='in_trash',
-            field=models.BooleanField(db_index=True, default=False, editable=False, help_text='Whether or not this document is in the trash.', verbose_name='In trash?'),
+            field=models.BooleanField(
+                db_index=True, default=False, editable=False,
+                help_text='Whether or not this document is in the trash.',
+                verbose_name='In trash?'
+            ),
         ),
         migrations.AlterField(
             model_name='document',
             name='label',
-            field=models.CharField(blank=True, db_index=True, default='', help_text='The name of the document.', max_length=255, verbose_name='Label'),
+            field=models.CharField(
+                blank=True, db_index=True, default='', help_text='The name '
+                'of the document.', max_length=255, verbose_name='Label'
+            ),
         ),
         migrations.AlterField(
             model_name='document',
             name='language',
-            field=models.CharField(blank=True, default=b'eng', help_text='The dominant language in the document.', max_length=8, verbose_name='Language'),
+            field=models.CharField(
+                blank=True, default=b'eng', help_text='The dominant '
+                'language in the document.', max_length=8,
+                verbose_name='Language'
+            ),
         ),
         migrations.AlterField(
             model_name='document',
             name='uuid',
-            field=models.UUIDField(default=uuid.uuid4, editable=False, help_text='UUID of a document, universally Unique ID. An unique identifiergenerated for each document.', verbose_name='UUID'),
+            field=models.UUIDField(
+                default=uuid.uuid4, editable=False, help_text='UUID of a '
+                'document, universally Unique ID. An unique identifier '
+                'generated for each document.', verbose_name='UUID'
+            ),
         ),
         migrations.AlterField(
             model_name='documenttype',
             name='label',
-            field=models.CharField(help_text='The name of the document type.', max_length=32, unique=True, verbose_name='Label'),
+            field=models.CharField(
+                help_text='The name of the document type.', max_length=32,
+                unique=True, verbose_name='Label'
+            ),
         ),
         migrations.AlterField(
             model_name='documentversion',
             name='checksum',
-            field=models.CharField(blank=True, db_index=True, editable=False, help_text="A hash/checkdigit/fingerprint generated from the document's binary data. Only identical documents will have the same checksum.", max_length=64, null=True, verbose_name='Checksum'),
+            field=models.CharField(
+                blank=True, db_index=True, editable=False,
+                help_text="A hash/checkdigit/fingerprint generated from "
+                "the document's binary data. Only identical documents will "
+                "have the same checksum.", max_length=64, null=True,
+                verbose_name='Checksum'
+            ),
         ),
         migrations.AlterField(
             model_name='documentversion',
             name='comment',
-            field=models.TextField(blank=True, default='', help_text='An optional short text describing the document version.', verbose_name='Comment'),
+            field=models.TextField(
+                blank=True, default='', help_text='An optional short text '
+                'describing the document version.', verbose_name='Comment'
+            ),
         ),
         migrations.AlterField(
             model_name='documentversion',
             name='encoding',
-            field=models.CharField(blank=True, editable=False, help_text='The document version file encoding. binary 7-bit, binary 8-bit, text, base64, etc.', max_length=64, null=True, verbose_name='Encoding'),
+            field=models.CharField(
+                blank=True, editable=False, help_text='The document version '
+                'file encoding. binary 7-bit, binary 8-bit, text, '
+                'base64, etc.', max_length=64, null=True,
+                verbose_name='Encoding'
+            ),
         ),
         migrations.AlterField(
             model_name='documentversion',
             name='mimetype',
-            field=models.CharField(blank=True, editable=False, help_text='The document version\'s file mimetype. MIME types are a standard way to describe the format of a file, in this case the file format of the document. Some examples: "text/plain" or "image/jpeg". ', max_length=255, null=True, verbose_name='MIME type'),
+            field=models.CharField(
+                blank=True, editable=False, help_text='The document '
+                'version\'s file mimetype. MIME types are a standard way '
+                'to describe the format of a file, in this case the file '
+                'format of the document. Some examples: "text/plain" '
+                'or "image/jpeg". ', max_length=255, null=True,
+                verbose_name='MIME type'
+            ),
         ),
         migrations.AlterField(
             model_name='documentversion',
             name='timestamp',
-            field=models.DateTimeField(auto_now_add=True, db_index=True, help_text='The server date and time when the document version was processed.', verbose_name='Timestamp'),
+            field=models.DateTimeField(
+                auto_now_add=True, db_index=True, help_text='The server '
+                'date and time when the document version was processed.',
+                verbose_name='Timestamp'
+            ),
         ),
     ]

mayan/apps/documents/migrations/0046_auto_20180917_0713.py

@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-# Generated by Django 1.11.11 on 2018-09-17 07:13
 from __future__ import unicode_literals
 
 from django.db import migrations, models
@@ -15,6 +13,9 @@ class Migration(migrations.Migration):
         migrations.AlterField(
             model_name='documenttype',
             name='label',
-            field=models.CharField(help_text='The name of the document type.', max_length=96, unique=True, verbose_name='Label'),
+            field=models.CharField(
+                help_text='The name of the document type.', max_length=96,
+                unique=True, verbose_name='Label'
+            ),
         ),
     ]

mayan/apps/documents/migrations/0047_auto_20180917_0737.py

@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-# Generated by Django 1.11.11 on 2018-09-17 07:37
 from __future__ import unicode_literals
 
 from django.db import migrations, models
@@ -16,12 +14,17 @@ class Migration(migrations.Migration):
         migrations.AddField(
             model_name='documentpagecachedimage',
             name='datetime',
-            field=models.DateTimeField(auto_now_add=True, db_index=True, default=django.utils.timezone.now, verbose_name='Date time'),
+            field=models.DateTimeField(
+                auto_now_add=True, db_index=True,
+                default=django.utils.timezone.now, verbose_name='Date time'
+            ),
             preserve_default=False,
         ),
         migrations.AddField(
             model_name='documentpagecachedimage',
             name='file_size',
-            field=models.PositiveIntegerField(db_index=True, default=0, verbose_name='File size'),
+            field=models.PositiveIntegerField(
+                db_index=True, default=0, verbose_name='File size'
+            ),
         ),
     ]

mayan/apps/documents/models/document_page_models.py

@@ -239,7 +239,6 @@ class DocumentPage(models.Model):
                 storage_documentimagecache.delete(cache_filename)
                 raise
 
-
     def invalidate_cache(self):
         storage_documentimagecache.delete(self.cache_filename)
         for cached_image in self.cached_images.all():

mayan/apps/documents/tests/test_statistics.py

@@ -15,4 +15,3 @@ class DocumentStatisticsTestCase(BaseTestCase):
                     'Error executing: {};  {}'.format(statistic, exception)
                 )
                 raise
-