Question

以下是＆＃34;用户＆＃34;下特定用户的子节点的firebase数据库。节点：

"L1Bczun2d5UTZC8g2LXchLJVXsh1" : {
  "email" : "orabbz@yahoo.com",
  "fullname" : "orabueze yea",
  "teamname" : "orabbz team",
  "total" : 0,
  "userName" : "orabbz@yahoo.com",
  "week1" : 0,
  "week10" : 0,
  "week11" : 0,
  "week12" : 0,
  "week2" : 0,
  "week3" : 17,
  "week4" : 0,
  "week5" : 20,
  "week6" : 0,
  "week7" : 0,
  "week8" : 0,
  "week9" : 10
},

有没有办法将Weeks 1的所有值加到week 12并在total键中得到总和？

我正在考虑将第1周 - 第12周的所有值带入角度js范围，然后将值相加，然后将总数返回到firebase数据库键total。但这听起来太长了。是否有更短的解决方案？

Answer 1

据我所知，Firebase DB没有像SQL中那样拥有任何数据库功能。因此，您所拥有的选项是获取数据并按照您的说法在Angular中进行计算。或者在将周数添加到用户时（写入数据库时）更新计数器。然后稍后再阅读计数器

添加子节点值

1 个答案: