修复动态发布与互动问题

cloudfunctions/petSave/index.js

@@ -2,6 +2,7 @@ const cloud = require('wx-server-sdk')
 
 cloud.init({ env: cloud.DYNAMIC_CURRENT_ENV })
 const db = cloud.database()
+const MAX_PETS_PER_USER = 10
 
 exports.main = async event => {
   const { OPENID } = cloud.getWXContext()
@@ -20,8 +21,12 @@ exports.main = async event => {
     return { petId: event.pet._id }
   }
 
+  const countRes = await db.collection('pets').where({ ownerId: users.data[0]._id }).count()
+  if ((countRes.total || 0) >= MAX_PETS_PER_USER) {
+    throw new Error(`最多只能添加 ${MAX_PETS_PER_USER} 只宠物`)
+  }
+
   pet.createdAt = Date.now()
   const result = await db.collection('pets').add({ data: pet })
   return { petId: result._id }
 }
-