Silence 90% of remaining Django 1.8 model warnings.

mayan/apps/document_indexing/apps.py

@@ -2,6 +2,7 @@ from __future__ import absolute_import, unicode_literals
 
 from kombu import Exchange, Queue
 
+from django.apps import apps
 from django.db.models.signals import post_save, post_delete
 from django.utils.translation import ugettext_lazy as _
 
@@ -11,10 +12,8 @@ from common import (
 )
 from common.classes import Package
 from common.widgets import two_state_template
-from documents.models import Document
 from documents.signals import post_document_created
 from mayan.celery import app
-from metadata.models import DocumentMetadata
 from navigation import SourceColumn
 from rest_api.classes import APIEndPoint
 
@@ -43,6 +42,14 @@ class DocumentIndexingApp(MayanAppConfig):
     def ready(self):
         super(DocumentIndexingApp, self).ready()
 
+        Document = apps.get_model(
+            app_label='documents', model_name='Document'
+        )
+
+        DocumentMetadata = apps.get_model(
+            app_label='metadata', model_name='DocumentMetadata'
+        )
+
         DocumentIndexInstanceNode = self.get_model('DocumentIndexInstanceNode')
         Index = self.get_model('Index')
         IndexInstance = self.get_model('IndexInstance')

mayan/apps/document_indexing/tasks.py

@@ -2,20 +2,23 @@ from __future__ import unicode_literals
 
 import logging
 
+from django.apps import apps
 from django.db import OperationalError
 
 from mayan.celery import app
-from documents.models import Document
 from lock_manager import Lock, LockError
 
 from .literals import RETRY_DELAY
-from .models import IndexInstanceNode
 
 logger = logging.getLogger(__name__)
 
 
 @app.task(bind=True, default_retry_delay=RETRY_DELAY, max_retries=None, ignore_result=True)
 def task_delete_empty_index_nodes(self):
+    IndexInstanceNode = apps.get_model(
+        app_label='document_indexing', model_name='IndexInstanceNode'
+    )
+
     try:
         rebuild_lock = Lock.acquire_lock(
             'document_indexing_task_do_rebuild_all_indexes'
@@ -32,6 +35,14 @@ def task_delete_empty_index_nodes(self):
 
 @app.task(bind=True, default_retry_delay=RETRY_DELAY, max_retries=None, ignore_result=True)
 def task_index_document(self, document_id):
+    Document = apps.get_model(
+        app_label='documents', model_name='Document'
+    )
+
+    IndexInstanceNode = apps.get_model(
+        app_label='document_indexing', model_name='IndexInstanceNode'
+    )
+
     try:
         rebuild_lock = Lock.acquire_lock(
             'document_indexing_task_do_rebuild_all_indexes'
@@ -74,6 +85,10 @@ def task_index_document(self, document_id):
 
 @app.task(bind=True, default_retry_delay=RETRY_DELAY, ignore_result=True)
 def task_do_rebuild_all_indexes(self):
+    IndexInstanceNode = apps.get_model(
+        app_label='document_indexing', model_name='IndexInstanceNode'
+    )
+
     if Lock.check_existing(name__startswith='document_indexing_task_update_index_document'):
         # A document index update is happening, wait
         raise self.retry()

mayan/apps/document_indexing/widgets.py

@@ -1,11 +1,10 @@
 # -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
+from django.apps import apps
 from django.utils.html import mark_safe
 from django.utils.translation import ugettext
 
-from .models import IndexInstanceNode
-
 
 def get_instance_link(index_instance_node, text=None, simple=False):
     """
@@ -64,6 +63,10 @@ def get_breadcrumbs(index_instance_node, simple=False, single_link=False, includ
 
 
 def index_instance_item_link(index_instance_item):
+    IndexInstanceNode = apps.get_model(
+        app_label='document_indexing', model_name='IndexInstanceNode'
+    )
+
     if isinstance(index_instance_item, IndexInstanceNode):
         if index_instance_item.index_template_node.link_documents:
             icon_template = '<i class="fa fa-folder"></i>'