- 添加正則驗證
- 添加錯誤提示
先來設置一些錯誤提示,以及添加正則驗證(上一章可能遺留了部分路徑錯誤,能夠自行調整)user-add.service.ts
css
import { Injectable } from "@angular/core"; import { QuestionBase, InputQuestion, SelectQuestion } from "../../../../theme/components/dynamic-form-components/dynamic-form-base"; import { regExp } from './../../../api/universal/regExp'; @Injectable() export class UserAddService { getQuestions() { let questions: QuestionBase<any>[] = [ new InputQuestion({ key: "firstName", label: "First name", value: "Bombasto", required: true, order: 1 }), new InputQuestion({ key: "emailAddress", label: "Email", type: "email", required: true, reg: regExp.email, prompt: "郵箱格式不正確", order: 2 }), new SelectQuestion({ key: "brave", label: "Bravery Rating", value: "", options: [ { key: "請選擇", value: "" }, { key: "Solid", value: "solid" }, { key: "Great", value: "great" }, { key: "Good", value: "good" }, { key: "Unproven", value: "unproven" } ], required: true, order: 3 }) ]; return questions.sort((a, b) => a.order - b.order); } }
pages/api/universal/regExp.ts
這裏是提供的一些正則html
export const regExp = { number: /^\d{1,6}$/, tel: /^(\+86)?(\s)?(\d{1,4}-)?\d{5,11}$/, phone: /^1[34578]\d{9}$/, email: /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(.[a-zA-Z0-9_-])+/, text: /^[a-zA-Z\u4e00-\u9fa5]{2,9}/, name: /^[a-zA-Z\u4e00-\u9fa5]{2,9}/, file: /[2-9]{1,2}/, password: /^(?=.*?[A-Za-z]+)(?=.*?[0-9]+)(?=.*?[A-Za-z]).{6,16}$/, strongPassword: /^(?![a-zA-Z]+$)(?![A-Z0-9]+$)(?![A-Z\W_]+$)(?![a-z0-9]+$)(?![a-z\W_]+$)(?![0-9\W_]+$)[a-zA-Z0-9\W_]{6,16}$/, //要求大小寫字母數字特殊符號四選三 approvalStatus: /(2|3)/, };
在驗證沒法經過時,用戶不清楚本身未經過驗證的選項,因此如今須要加入錯誤提示,友好的提示用戶。
在 dynamic-form.component.ts
添加git
import "style-loader!./dynamic-fom-components.component.scss";
dynamic-fom-components.component.scss
github
$errorColor: #fa758e; .form-container { display: flex; justify-content: flex-start; align-items: center; label { width: 10%; margin-right: 20px; i { color: $errorColor; margin-right: 5px; } } .form-control { width: 25%; } .prompt-error { color: $errorColor; margin-left: 20px; } }
question-base.ts
api
this.prompt = options.prompt || '該項爲必填/選項';
咱們使用的是響應式表單組成的動態表單,因此對應的 FormControl
應該有如下幾個屬性能夠幫助咱們添加提示app
如今來爲控件添加提示樣式flex
先爲 QuestionControlService
添加一個公開的方法,用於設置 setterui
question-control.service.ts
this
... export class QuestionControlService { ... public getControlProperty(): void { Object.defineProperty(this, 'isValid', { get() { return this.form.controls[this.question.key].valid; } }); Object.defineProperty(this, 'isTouched', { get() { return this.form.controls[this.question.key].touched; } }); } }
這裏是將用戶表單中 FormControl
的 valid 和 touched 屬性設置爲 getter, 以便實時更新狀態。spa
如今來爲 InputTextboxComponent
注入這幾個 getter
input-textbox.component.ts
export class InputTextboxComponent { ... constructor(private qcs: QuestionControlService) { qcs.getControlProperty.call(this, null); } }
而後須要在 html 中添加一些規則, 來顯示這些錯誤提示
input-textbox.component.html
<div class="form-container" [formGroup]="form" [ngClass]="{'has-error':!isValid && isTouched, 'has-success': isValid && isTouched}"> <label for=""><i>*</i>{{question.label}}</label> <input class="form-control" [formControlName]="question.key" [id]="question.key" [type]="question.type"> <span *ngIf="!isValid && !!isTouched" class="prompt-error">{{question.prompt}}</span> </div>
這樣就大功告成,如下是實際效果圖
當驗證不經過時:
錯誤提示出現,輸入框有紅色線框環繞,且提交按鈕爲置灰狀態
當驗證經過時:
全部選項有正確提示,且表單可提交
讀者可自行完成 InputSelectComponent
的錯誤提示驗證
下章將會講解如何提交一個表單,基本的增刪改查,將會使用到 httpClient
.
(此章以及此章前,代碼都提交在 ng2-admin 的 development 分支上,在將來會分開分支,方便讀者練習)