向Firestore添加字段？

Question

如图中所示，我有一个名为JobsPosted的字段，所以我想添加另一个作业，我已经有洗碗机和侍者。但是我收到此查询错误

     db.collection("companies").doc("Tiradito").field("jobsPosted").set(postJobObject).then(function() {
        console.log("Document successfully written!");
       });

那是我的帖子

var postJobObject = {
      "position": this.state.selected,
      "timeSchedule": this.state.timeSchedule,
      "compensation" : this.state.compensation,
      "experience" : this.state.experience,
      "description" : this.state.description
    }

Answer 1

传递选项以将新数据与任何现有文档合并，以避免覆盖整个文档

var cityRef = db.collection('cities').doc('BJ');

var setWithMerge = cityRef.set({
    capital: true
}, { merge: true });

来源：https：//firebase.google.com/docs/firestore/manage-data/add-data

Answer 2

尝试

    jobsPosted = {}

    var postJobObject = {
          "position": this.state.selected,
          "timeSchedule": this.state.timeSchedule,
          "compensation" : this.state.compensation,
          "experience" : this.state.experience,
          "description" : this.state.description
        }

jobsPosted['newJob'] = postJobObject;

然后使用update

db.collection("companies").doc("Tiradito").update(jobsPosted).then(function() {
        console.log("Document successfully written!");
       });