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[Angular2 Form] patchValue, setValue and reset() for Form

时间:2016-10-30 07:29:35      阅读:690      评论:0      收藏:0      [点我收藏+]

Learn how to update part of form model, full form model and reset whole form.

 

We have form definetion like this:

reactiveForm: FormGroup;

constructor(fb: FormBuilder) {

    this.extra = new FormControl(..., [
      Validators.maxLength(100)
    ]);

    this.reactiveForm = fb.group({
      // title <-- formControlName="title"
      title: [
        Title, // <-- Default value
        [
          Validators.required,
          Validators.minLength(3)
        ] // <-- Validations
      ],
      duration: [
        0,
        [
          Validators.required,
          //Validators.pattern(‘[0-9]+‘),
          validateDuration
        ]
      ],
      extra: this.extra,
      description: [
        Description,
        [Validators.required]
      ]
    });

 

  partialUpdate(){
    this.reactiveForm.patchValue({
      title: updatedTitle
    })
  }

  fullUpdate(){
    this.reactiveForm.setValue({
      title: "Full updated title",
      description: "Full updated description",
      duration: 0,
      extra: "Extra"
    })
  }

  reset(){
    this.reactiveForm.reset();
  }

 

[Angular2 Form] patchValue, setValue and reset() for Form

原文:http://www.cnblogs.com/Answer1215/p/6012361.html

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