如何使用使用ngModel未更改的表单组件的值？

Question

我正在制作一个表单并希望在表单中使用以前的值作为 "value" 并通过使用 ngModel 动态更改一些属性但用户未更改的字段属性甚至不保留以前的值。

<form #edit="ngForm" (submit)="editProfile(edit.value)">
                <fieldset>
                    <div class="form-group">
                        <label for="username">Username : </label>&nbsp;&nbsp;@{{user.username}}
                    </div>
                    <div class="form-group">
                        <label for="name">Name :</label>&nbsp;&nbsp;@{{user.name}}
                        <input type="text" name="edit_name" class="form-control" id="name" value={{user.name}} ngModel>
                    </div>
                    <div class="form-group">
                        <label for="email">Email :</label>&nbsp;&nbsp;{{user.email}}
                        <input type="text" name="edit_email" class="form-control" id="email" value={{user.email}} ngModel>
                    </div>
                    <div class="form-group">
                        <label for="bio">Bio :</label>&nbsp;&nbsp;{{edit_bio}}
                        <input type="text" name="edit_bio" class="form-control" id="bio" value="Put who you are here!" ngModel>
                    </div>
                    <div class="form-group">
                        <label for="gender">Gender</label>
                        <select class="form-control" id="gender" name="edit_gender"  ngModel>
                                <option>Male</option>
                                <option>Female</option>
                                <option>Others</option>
                    </select>
                    </div>
                    <button type="submit" class="btn btn-primary">Submit</button>

                </fieldset>
            </form>

在 TypeScript 文件中

  edit_name:String='';
  edit_email:String='';
  edit_bio:String='';
  edit_gender:String='';
  user:any={};

ngOnit(){
    this.authService.getuser()
            .subscribe(data=>{
                   this.user=data;
                  }
this.initiateUpdateProfile();
}

initiateUpdateProfile(){
  this.edit_name=this.user.name;
  this.edit_email=this.user.email;
  this.edit_bio='Something you want to tell the world';
  this.edit_gender='Male';
}


  editProfile(e){
console.log(e);

}

一切都运行顺利但是当我提交表单时甚至没有触及表单元素而不是edit.value 甚至不保留以前的值，它记录的所有内容都是空值。

Answer 1

                    <div class="form-group">
                        <label for="name">Name :</label>&nbsp;&nbsp;@{{user.name}}
                        <input type="text" name="edit_name" class="form-control" id="name" [(ngModel)]="edit_name" value={{user.name}}>
                    </div>

如何使用使用ngModel未更改的表单组件的值？

How to use the value of the forms components which are unchanged using ngModel?

html

angular

forms

event-handling

mean-stack