WTForms常用的驗證器

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from wtforms import Form,StringField,IntegerFieldfrom wtforms import validatorsfrom wtforms.validators import Length,EqualTo,Email,InputRequired,NumberRange,    Regexp,URL,UUIDclass RegisterForm(Form):    username = StringField(validators=[Length(max=10,min=3,message=‘使用者名稱長度不正確‘)])    password = StringField(validators=[Length(max=10,min=3,message=‘密碼長度不正確‘)])    password_repeat = StringField(validators=[Length(max=10,min=3,message=‘密碼長度不正確‘),EqualTo(‘password‘)])class LoginForm(Form):    # email = StringField(validators=[Email(message=‘郵箱格式不正確‘)])    # username = StringField(validators=[InputRequired(message=‘必須填寫使用者名稱‘)])#inputrequired必要欄位    # age = IntegerField(validators=[NumberRange(12,100)])#驗證數字在某某區間之內    # phone = StringField(validators=[Regexp(r‘1[85347]\d{9}‘,message=‘手機號碼格式不正確‘)])    # home_page = StringField(validators=[URL()])#必須驗證必須是一個跳轉連結    uuid = StringField(validators=[UUID()])#驗證uuid的

from flask import Flask,request,render_templatefrom forms import RegisterForm,LoginFormapp = Flask(__name__)@app.route(‘/‘)def hello_world():    return ‘Hello World!‘@app.route(‘/register/‘,methods=[‘get‘,‘post‘])def register():    if request.method == ‘GET‘:        return render_template(‘register.html‘)    else:        # username = request.form.get(‘username‘)        # password = request.form.get(‘password‘)        # password_repeat = request.form.get(‘password_repeat‘)        # if 3 > len(username) or len(username)> 10:        #     return ‘使用者名稱長度不正確‘        # if 3 > len(password) or len(password)> 10:        #     return ‘密碼長度不正確‘        # if password != password_repeat:        #     return ‘密碼輸入不一致‘        form = RegisterForm(request.form)        if form.validate():            return ‘success‘        else:            print(form.errors)#{‘username‘: [‘使用者名稱長度不正確‘],            # ‘password‘: [‘密碼長度不正確‘], ‘password_repeat‘: [‘密碼長度不正確‘]}            #因為是字典，擷取方式我就不寫了            return ‘fail‘@app.route(‘/login/‘,methods=[‘get‘,‘post‘])#如果methods沒有post方法，會報狀態代碼405錯誤，# 靜態檔案不允許請求post方法def login():    if request.method == "GET":        return render_template(‘login.html‘)    else:        login_form = LoginForm(request.form)        if login_form.validate():            return ‘success‘        else:            return ‘{errors}‘.format(errors=login_form.errors.get(‘phone‘)[0])#擷取具體錯誤資訊if __name__ == ‘__main__‘:    app.run(debug=True)

 

WTForms常用的驗證器