和前端交互全部使用JSON,如何将数据库查询结果转换成JSON格式
返回多条数据
示例
import jsonfrom django.http import HttpResponsefrom django.core import serializersdef db_to_json(request):scripts = Scripts.objects.all()[0:1]json_data = serializers.serialize('json', scripts)return HttpResponse(json_data, content_type="application/json")
返回结果
[{"fields": {"script_content": "abc","script_type": "1"},"model": "home_application.scripts","pk": "03a0a7cf-567a-11e9-8566-9828a60543bb"}]
功能实现了,但是我需要返回一个约定好的JSON格式,查询结果放在 data 中
{"message": 'success', "code": '0', "data": []}
代码如下:
import jsonfrom django.http import HttpResponsefrom django.core import serializersdef db_to_json2(request):# 和前端约定的返回格式result = {"message": 'success', "code": '0', "data": []}scripts = Scripts.objects.all()[0:1]# 序列化为 Python 对象result["data"] = serializers.serialize('python', scripts)# 转换为 JSON 字符串并返回return HttpResponse(json.dumps(result), content_type="application/json")
调用结果
{"message": "success","code": "0","data": [{"fields": {"script_content": "abc","script_type": "1"},"model": "home_application.scripts","pk": "03a0a7cf-567a-11e9-8566-9828a60543bb"}]}
有点难受的是,每条数据对象包含 fields,model,pk三个对象,分别代表字段、模型、主键,我更想要一个只包含所有字段的字典对象。虽然也可以处理,但还是省点性能,交给前端解析吧。
返回单个对象
代码:
from django.forms.models import model_to_dictfrom django.http import HttpResponseimport jsondef obj_json(request):pk = request.GET.get('script_id')script = Scripts.objects.get(pk=pk)# 转为字典类型script = model_to_dict(script)return HttpResponse(json.dumps(script), content_type="application/json")
返回JSON:
{"script_id": "1534d8f0-59ad-11e9-a310-9828a60543bb","script_content": "3","script_name": "3","script_type": "1"}
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