我写了一个非常简单的表单控件验证器：
import { Directive } from '@angular/core';
import { AbstractControl,NG_VALIDATORS } from '@angular/forms';
function checkBox@R_301_103@Validator(c: AbstractControl) {
return c.value ? null : {
@R_301_103@: true
};
}
@Directive({
selector: '[checkBox-@R_301_103@-validator]',providers: [
{ provide: NG_VALIDATORS,multi: true,useValue: checkBox@R_301_103@Validator }
]
})
export class CheckBox@R_301_103@Validator {
}
我想传递一个消息参数给我,我可以返回.我试过这个,但它不起作用：
function checkBox@R_301_103@Validator(c: AbstractControl,msg) { return c.value ? null : { message: msg }; } @Directive({ selector: '[checkBox-@R_301_103@-validator]',useValue: checkBox@R_301_103@Validator } ] }) export class CheckBox@R_301_103@Validator { @Input('checkBox-@R_301_103@-validator') msg: = 'default message'; }
任何帮助,将不胜感激
您可以将指令本身作为验证器.这样您就可以使用消息输入.
import { forwardRef } from '@angular/core';
import { Validator } from '@angular/forms';
@Directive({
selector: '[checkBox-@R_301_103@-validator]',providers: [
{
provide: NG_VALIDATORS,useExisting: forwardRef(() => CheckBox@R_301_103@Validator )
}
]
})
export class CheckBox@R_301_103@Validator implements Validator {
@Input('checkBox-@R_301_103@-validator') msg = 'default message';
validate(c: AbstractControl) {
return c.value ? null : {
@R_301_103@: this.msg
};
}
}
