Question

我有一个问题，因为提交表单后，即使有值，“必填字段”也不会消失。它应该消失了。我的有效性有问题吗？请查看此链接See this link

TS

.my-class .mat-dialog-container{
  height: 400px;
  width: 600px;
  border-radius: 10px;
  background: lightcyan;
  color: #039be5;
}

}

Answer 1

在表格中修补值之后，您应该将其标记为触摸以显示错误

DEMO

patchValues(id, i) {
   let x = (<FormArray>this.addForm.controls['rows']).at(i);

   const selectedIngredient = this.ingredients.find(y => y.id == id);

   x.patchValue({
     unit_price: selectedIngredient.price
   });
  this.markFormGroupTouched(this.addForm)
}

要将完整的表单标记为已触摸：

    /**
     * Marks all controls in a form group as touched
     * @param formGroup - The group to caress
    */
    markFormGroupTouched(formGroup: FormGroup) {
        if (Reflect.getOwnPropertyDescriptor(formGroup, 'controls')) {
            (<any>Object).values(formGroup.controls).forEach(control => {
                if (control instanceof FormGroup) {
                    // FormGroup
                    this.markFormGroupTouched(control);
                } else if (control instanceof FormArray) {
                    control.controls.forEach(c => {
                        if (c instanceof FormGroup)
                            this.markFormGroupTouched(c);
                    });
                }
                // FormControl
                control.markAsTouched();
            });
        }
    }

Answer 2

在这种情况下，您必须使用（例如）触发有效性检查：

#!/bin/bash

export xxxxx
export xxxxx
export PATH=xxxxx

check_if_file_is_open(){
while :
do
    if ! [[ `lsof | grep file.txt` ]]
    then
        break
    fi
    sleep 1
done
}


get_JSON_file(){
/usr/bin/expect -f <(cat << EOF
spawn sftp -P port user@ip
expect "Password:"
send "password\r"
expect "$ "
send "get path/to/file/file.json\r"
send "exit\r"
interact
EOF
)
}


get_JSON_file
check_if_file_is_open
cp file.txt /path/to/destination/folder

修补值时，不会执行验证器。

工作fiddle

修补项目不会更新Angular中的有效性

2 个答案: