‘unicode’ object has no attribute ‘get’

views.py文件：

def get_pattern(request, product_id):
    """
    Get JSON for needed pattern
    """
    data = Patterns.objects.get(related_module=product_id)
    product_data = serializers.serialize("json", [data, ])
    return product_data

urls.py文件：

urlpatterns = [
url(r'^get_pattern(?P<product_id>[0-9]+)/$', views.get_pattern, name='get_pattern'),
]

错误信息：

Request Method: GET
Request URL:    http://xxxxxxx:8000/xxxx/get_pattern1/
Django Version: 1.8.3
Exception Type: AttributeError
Exception Value:    
'unicode' object has no attribute 'get'
Exception Location: /home/xxxx/local/lib/python2.7/site-    packages/django/middleware/clickjacking.py in process_response, line 31

错误的地方：

return product_data

django的view返回的必须是HttpResponse对象，而不是String。在后台会默认返回HttpResponse对象而调用get()方法，由于字符串没有get()方法导致报错。

修改：

bytes = product_data.encode('utf-8')
return django.http.HttpResponse(bytes, content_type='application/json')