增加了一些数据model

model/grade.js

@@ -0,0 +1,40 @@
+const AV = require('../lib/av-live-query-weapp-min');
+
+//数据储存模板--分数
+class Grade extends AV.Object {
+  get mark() {
+    return this.get('done');
+  }
+  set mark(value) {
+    this.set('mark', value);
+  }
+  get student(){
+    return this.get("student");
+  }
+  set student(value){
+    this.set("student". value);
+  }
+
+  get class() {
+    return this.get('class');
+  }
+
+  set class(value){
+    this.set("class", value);
+  }
+  get content(){
+    return this.get("content");
+  }
+  set content(value) {
+    this.set('content', value);
+  }
+  get date(){
+    return this.get("date");
+  }
+  set date(value){
+    this.set("date", value)
+  }
+}
+
+AV.Object.register(Grade, 'Grade');
+module.exports = Grade;