后端搭建起来

server/app/service/db.js

@@ -1,30 +1,37 @@
 const Service = require("egg").Service
+const {v4: uuid} = require("uuid");
 
 class DbService extends Service {
   async addOrUpdate(table, form) {
     let result
     if (!form.id) {//创建
+      form.id = uuid()
       result = await this.app.mysql.insert(table, form)
     } else {//更新
       result = await this.app.mysql.update(table, form)
     }
-    return result === 1
+    return result === 1 ? {code: 0, data: form.id} : {code: 1, data: null}
   }
 
   async delete(table, id) {
     await this.app.mysql.delete(table, {id})
+    return {code: 0, data: null}
   }
 
   async detail(table, id) {
-    return await this.app.mysql.get(table, {id})
+    const data = await this.app.mysql.get(table, {id})
+    return {code: 0, data}
   }
 
   async list(table, params = {}) {
-    return await this.app.mysql.select(table, {
+    let {current = 0} = params
+    const records = await this.app.mysql.select(table, {
       where: params,
       limit: params?.size || 10, // 返回数据量
-      offset: Math.max(params?.current - 1, 0), // 数据偏移量
+      offset: Math.max(--current, 0), // 数据偏移量
     })
+    const total = (await this.app.mysql.select(table, {where: params}))?.length || 0
+    return {code: 0, data: {records, total}}
   }
 }