enroll app修改

history/serializers.py

@@ -0,0 +1,19 @@
+from rest_framework import serializers
+from .models import *
+
+
+class HistoryInfoSerializer(serializers.ModelSerializer):
+    class Meta:
+        model = History
+        fields = '__all__'
+    grade = serializers.CharField(label="年级", required=True)
+    name = serializers.CharField(label="事件名称", max_length=30, required=True)
+    description = serializers.CharField(label="事件描述", max_length=200, required=True)
+    img = serializers.ImageField(label="图片", required=False)
+
+    def validate_grade(self, value):
+        if not (2010 < value <= 2021):
+            raise serializers.ValidationError("不合法输入")
+        return value
+
+