はAttributeError：モジュールのdjango.contrib.postgres.fields 'には属性を持っていない「JSONField」

Question

GitHubのレポからプロジェクトをインストールし、すべての

File "/Users/TheKotik/closer/blog/models.py", line 5, in <module> 
    from rest_framework import serializers 
    File "/Users/TheKotik/closer/denv/lib/python3.5/site-packages/rest_framework/serializers.py", line 1534, in <module> 
    ModelSerializer.serializer_field_mapping[postgres_fields.JSONField] = JSONField 
AttributeError: module 'django.contrib.postgres.fields' has no attribute 'JSONField' 

後に次のエラーが表示され、それが関連しているものは考えて、持っていません。助けてください..

全体のトレースバックを：

File "manage.py", line 10, in <module> 
    execute_from_command_line(sys.argv) 
    File "/Users/TheKotik/closer/denv/lib/python3.5/site-packages/django/core/management/__init__.py", line 338, in execute_from_command_line 
    utility.execute() 
    File "/Users/TheKotik/closer/denv/lib/python3.5/site-packages/django/core/management/__init__.py", line 312, in execute 
    django.setup() 
    File "/Users/TheKotik/closer/denv/lib/python3.5/site-packages/django/__init__.py", line 18, in setup 
    apps.populate(settings.INSTALLED_APPS) 
    File "/Users/TheKotik/closer/denv/lib/python3.5/site-packages/django/apps/registry.py", line 108, in populate 
    app_config.import_models(all_models) 
    File "/Users/TheKotik/closer/denv/lib/python3.5/site-packages/django/apps/config.py", line 198, in import_models 
    self.models_module = import_module(models_module_name) 
    File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/importlib/__init__.py", line 126, in import_module 
    return _bootstrap._gcd_import(name[level:], package, level) 
    File "<frozen importlib._bootstrap>", line 986, in _gcd_import 
    File "<frozen importlib._bootstrap>", line 969, in _find_and_load 
    File "<frozen importlib._bootstrap>", line 958, in _find_and_load_unlocked 
    File "<frozen importlib._bootstrap>", line 673, in _load_unlocked 
    File "<frozen importlib._bootstrap_external>", line 665, in exec_module 
    File "<frozen importlib._bootstrap>", line 222, in _call_with_frames_removed 
    File "/Users/TheKotik/closer/blog/models.py", line 5, in <module> 
    from rest_framework import serializers 
    File "/Users/TheKotik/closer/denv/lib/python3.5/site-packages/rest_framework/serializers.py", line 1534, in <module> 
    ModelSerializer.serializer_field_mapping[postgres_fields.JSONField] = JSONField 
AttributeError: module 'django.contrib.postgres.fields' has no attribute 'JSONField' 

Answer 1

あなたのDjangoのバージョンが低すぎます。 JSONFieldは、Djangoの1.9（release notes）で追加されましたので、あなたはJSONField