如何在 Django 中加载 JSON 数据并创建模型

Question

我正在尝试加载 json 数据文件并使用给定的 json 数据文件创建 Player 类。 我查看了 Django 网站上的文档和一些关于堆栈溢出的帖子，但不知道该怎么做。 当我尝试在 models.py 上创建 create() 的类方法时，我一直收到 no table exists 错误。 谁能帮我弄清楚？？提前谢谢你

对于 models.py 我有播放器类

    class Player(models.Model):

    pos = models.CharField(max_length=2, default="")
    name = models.CharField(max_length=30, default="")

    age = models.PositiveIntegerField()
    posRank = models.PositiveIntegerField()

    throwAtt = models.PositiveIntegerField()
    throwYd = models.PositiveIntegerField()
    throwTD = models.PositiveIntegerField()
    interception = models.PositiveIntegerField()

    rushAtt = models.PositiveIntegerField()
    rushYd = models.PositiveIntegerField()
    rushTD = models.PositiveIntegerField()
    rushAvgYd = models.FloatField()

    target = models.PositiveIntegerField()
    rec = models.PositiveIntegerField()
    recYd = models.PositiveIntegerField()
    recAvgYd = models.FloatField()
    recTD = models.PositiveIntegerField()
    totalTD = models.PositiveIntegerField()

    fumble = models.PositiveIntegerField()
    fpts = models.FloatField(null=True)
    ppr = models.FloatField()
    totGames = models.PositiveIntegerField()

对于serializers.py 我有如下编写的播放器序列化程序

    class PlayerSerializer(serializers.ModelSerializer):
    class Meta:

        model = Player
        fields = ('name', 'pos', 'age', 'posRank', 'throwAtt', 'throwYds', 'throwTD',
                  'interception', 'rushAtt', 'rushYd', 'rushTD', 'rushAvgYd', 'target',
                  'rec', 'recYd', 'recAvgYd', 'recTD' 'totalTD', 'fumble', 'fpts', 'ppr', 'totGames')


and inside views.py i have this class

class PlayerView(generics.CreateAPIView):
    players = Player.objects.all()
    serializer = PlayerSerializer(players, many=True)

    def get(self, request):
        output = json.load('api/NewNFLdata.json')
        for player in output:
            newPlayer = Player(pos=player["FantPos"],
                               name=player["Player"],
                               age=player["Age"],
                               posRank=player["PosRank"],
                               throwAtt=player["Att"],
                               throwYd=player["Yds"],
                               throwTD=player["TD"],
                               interception=player["Int"],
                               rushAtt=player["Att.1"],
                               rushYd=player["Yds.1"],
                               rushTD=player["TD.1"],
                               rushAvgYd=player["Y/A"],
                               target=player["Tgt"],
                               rec=player["Rec"],
                               recYd=player["Yds.2"],
                               recAvgYd=player["Y/R"],
                               recTD=player["TD.2"],
                               totalTD=player["TD.3"],
                               fumble=player["Fmb"],
                               fpts=player["FantPt"],
                               ppr=player["PPR"],
                               totGames=player["G"]
                               )
            newPlayer.save()
        return Response(serializer.data)

我尝试通过查找堆栈溢出来自己完成 但找不到将 json 数据加载到模型中的方法

Answer 1

看看夹具： https://docs.djangoproject.com/en/3.1/howto/initial-data/

如果您可以将 JSON 文件调整为适当的格式，您将受益于 Django 的固定装置加载过程，其中包括您不必编写的字段验证。祝你好运！