用于将model实例转换为dict
1 from django.forms.models import model_to_dict
2 di = model_to_dict(order, exclude=［'create_time', 'update_time'］)
源码函数声明：def model_to_dict(instance, fields=None, exclude=None):
其中参数instance是对象实例，fields是指定需要哪些字段，exclude是指定排除哪些字段，exclude比fields优先级高。
model_to_dict的一个应用
1 def case_set_new(req):
2 if req.method == 'GET':
3 case_sets = models.CaseSet.objects.filter(is_delete=False)
4 data = []
5 for c in case_sets:
6 d = model_to_dict(c)
7 data.append(d)
8 response = {'code': 0, 'msg': '添加成功', 'data': data}
9 return JsonResponse(response, json_dumps_params={'ensure_ascii': False}) # 汉字不转义
10 elif req.method == 'POST':
11 name = req.POST.get('name')
12 desc = req.POST.get('desc')
13 if name.strip() and desc.strip():
14 models.CaseSet.objects.create(name=name, desc=desc)
15 data = {'code': 0, 'msg': '添加成功'}
16 else:
17 data = {'code': -1, 'msg': '参数错误'}
18 return JsonResponse(data) # 通过JsonResponse类返回json字符串
19 elif req.method == 'PUT':
20 pass
21 elif req.method == 'DELETE':
22 pass