WTForms常用的验证器
from wtforms import Form,StringField,IntegerField from wtforms import validators from wtforms.validators import Length,EqualTo,Email,InputRequired,NumberRange,\ Regexp,URL,UUID class RegisterForm(Form): username = StringField(validators=[Length(max=10,min=3,message='用户名长度不正确')]) password = StringField(validators=[Length(max=10,min=3,message='密码长度不正确')]) password_repeat = StringField(validators=[Length(max=10,min=3,message='密码长度不正确'),EqualTo('password')]) class LoginForm(Form): # email = StringField(validators=[Email(message='邮箱格式不正确')]) # username = StringField(validators=[InputRequired(message='必须填写用户名')])#inputrequired必填字段 # age = IntegerField(validators=[NumberRange(12,100)])#验证数字在某某区间之内 # phone = StringField(validators=[Regexp(r'1[85347]\d{9}',message='手机号码格式不正确')]) # home_page = StringField(validators=[URL()])#必须验证必须是一个跳转链接 uuid = StringField(validators=[UUID()])#验证uuid的
from flask import Flask,request,render_template from forms import RegisterForm,LoginForm app = 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 '用户名长度不正确' # if 3 > len(password) or len(password)> 10: # return '密码长度不正确' # if password != password_repeat: # return '密码输入不一致' form = RegisterForm(request.form) if form.validate(): return 'success' else: print(form.errors)#{'username': ['用户名长度不正确'], # 'password': ['密码长度不正确'], 'password_repeat': ['密码长度不正确']} #因为是字典,获取方式我就不写了 return 'fail' @app.route('/login/',methods=['get','post'])#如果methods没有post方法,会报状态码405错误, # 静态文件不允许请求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])#获取具体错误信息 if __name__ == '__main__': app.run(debug=True)