angular2-forms

问题 I failed to get an Angular 2 reactive form to work which has a FormGroup nested in a FormArray . Can somebody show me what is wrong in my setup. Unrelated parts of the code has been omitted for the brevity. Following is my component orderForm: FormGroup = this.fb.group({ id: [''], store: ['', Validators.required], //The part related to the error order_lines: this.fb.array([ this.fb.group({ id: [''], order_id: [], product_id: [], description: ['', Validators.required], unit_price: ['',

问题 I failed to get an Angular 2 reactive form to work which has a FormGroup nested in a FormArray . Can somebody show me what is wrong in my setup. Unrelated parts of the code has been omitted for the brevity. Following is my component orderForm: FormGroup = this.fb.group({ id: [''], store: ['', Validators.required], //The part related to the error order_lines: this.fb.array([ this.fb.group({ id: [''], order_id: [], product_id: [], description: ['', Validators.required], unit_price: ['',

问题 I have prepared a from using ReactiveForms provided by angular2/forms. This form has a form array products: this.checkoutFormGroup = this.fb.group({ selectedNominee: ['', Validators.required], selectedBank: ['', Validators.required], products: productFormGroupArray }); productFormGroupArray is a array of FormGroup Objects.I fetched the controls i.e. FormArray object using this: this.checkoutFormGroup.get('products') I am trying to get the element in the products array at index i . How can

来源： https://stackoverflow.com/questions/39687560/angular-2-forms-onpush

来源： https://stackoverflow.com/questions/40845178/angular2-ngform-not-working

来源： https://stackoverflow.com/questions/43710137/angular-2-how-to-populate-a-dropdown-based-on-another-dropdown-selection

来源： https://stackoverflow.com/questions/43710137/angular-2-how-to-populate-a-dropdown-based-on-another-dropdown-selection

来源： https://stackoverflow.com/questions/41588325/how-to-append-new-formgroup-or-formcontrol-to-form

来源： https://stackoverflow.com/questions/41588325/how-to-append-new-formgroup-or-formcontrol-to-form

来源： https://stackoverflow.com/questions/41549426/use-of-ngmodel-within-formgroup