如何在angular中使用JSON文件将数据保存在数据库中

问：

嗨，我正在尝试将我的 HTML 表单数据保存在数据库中。我为动态字段创建了一个 JSON 文件并绑定了它，但存在一些问题，这就是数据不保存的原因。当我保存数据时，保存的数据与JSON文件中的数据相同，就好像我在输入字段中输入了一些字符串值一样，它没有保存，但原始字符串是相同的。

 <div>
                        <p *ngFor="let item of doclist">
                            {{ item.label }}
                            <ejs-checkbox [(ngModel)]="item.value" id="item.value"  name="item.value">
                                {{ item.value }}
                            </ejs-checkbox>
                            <ejs-textbox *ngIf="item.value == true && !false"[(ngModel)]="item.comment" 
name="item.comment">
                                {{ item.comment }}
                            </ejs-textbox>
                        </p>
                    </div>

  public doclist : {}[] = db;
  public doc = JSON.stringify(this.doclist);
  this.salesToOpsHand.documentList = this.doc;
`// documentList in that i have to save my all json string value so i write here doc values  == documentList`

this is my db.json file

[
  {
  "name" : "IsSpecifications",
  "label" : "isSpecifications() ",
  "value" : false,
  "type" : "checkbox",
  "comment" : ""
  },
  {
  "name" : "IsDrawSchedule",
  "label" : "Drawings/Schedules ",
  "value" : false,
  "type" : "checkbox",

  "comment" : ""
  },
  {
  "name" : "TqRfi",
  "label" : "TQ’s / RFI’s ",
  "value" : false,
  "type" : "checkbox",

  "comment" : ""
  },
  {
  "name" : "InsEnqReqQouInfor",
  "label" : "Install Enquiry / request to quote information ",
  "value" : false,
  "type" : "checkbox",

  "comment" : ""
  },
  {
  "name" : "PanEnqReqQouInfor",
  "label" : "Panel Enquiry / request to quote information ",
  "value" : false,
  "type" : "checkbox",

  "comment" : ""
  },
  {
  "name" : "PanSubContQuot",
  "label" : "Panel Sub Contractor Quotation ",
  "value" : false,
  "type" : "checkbox",

  "comment" : ""
  },
  {
  "name" : "MccSchedule",
  "label" : "MCC Schedules ",
  "value" : false,
  "type" : "checkbox",
  "comment" : ""
  },
  {
  "name" : "ScPackQuot",
  "label" : "Other S/C Package Quotations ",
  "value" : false,
  "type" : "checkbox",
  "comment" : ""
  },
  {
  "name" : "OthrdPartyQuot",
  "label" : "Other 3rd Party Quotations ",
  "value" : false,
  "type" : "checkbox",
  "comment" : ""
  },
  {
  "name" : "EquipSchedule",
  "label" : "Equipment Schedules ",
  "value" : false,
  "type" : "checkbox",
  "comment" : ""
  },
  {
  "name" : "PointSchedul",
  "label" : "Points Schedules ",
  "value" : false,
  "type" : "checkbox",
  "comment" : ""
  },
  {
  "name" : "ValveSchedul",
  "label" : "Valve Schedules ",
  "value" : false,
  "type" : "checkbox",
  "comment" : ""
  },
  {
  "name" : "IdentRiskOpport",
  "label" : "Identifed Risks and Opportunities (INCL. VALUE ENGINEERING) ",
  "value" : false,
  "type" : "checkbox",
  "comment" : ""
  },
  {
  "name" : "InstSubContQuot",
  "label" : "Install Sub Contractor Quotation ",
  "value" : false,
  "type" : "checkbox",
  "comment" : ""
  }
]

“如果有人知道我在哪里犯了错误，请帮助我

在这里，我尝试使用angular和JSON文件，并将值以字符串的形式保存在服务器端'