视图函数在去注册用户之前需要进行验证，表单验证需要先下载 flask-wtf
在终端执行：
pip install flask-wtf
新建forms.py
import wtformsfrom wtforms.validators import Email,Length,EqualTofrom models import UserModel,EmailCaptchaModel# Form:主要就是用来验证前端返回的数据是否符合要求class RegisterForm(wtforms.Form): email = wtforms.StringField(validators=[Email(message="邮箱格式错误！")]) captcha = wtforms.StringField(validators=[Length(min=4, max=4, message="验证码格式错误!")]) username = wtforms.StringField(validators=[Length(min=3, max=20, message="用户名格式错误!")]) password = wtforms.StringField(validators=[Length(min=6, max=20, message="密码格式错误!")]) password_confirm = wtforms.StringField(validators=[EqualTo("password", message="两次密码不一致")]) # 自定义验证 # 1.邮箱是否已经被注册 def validate_email(self,field): email = field.data user = UserModel.query.filter_by(email=email).first() if user: raise wtforms.ValidationError(message="该邮箱已被注册！") # 2.验证码是否正确 def validate_captcha(self,field): captcha = field.data email = self.email.data captcha_model = EmailCaptchaModel.query.filter_by(email=email,captcha=captcha).first() if not captcha_model: raise wtforms.ValidationError(message="邮箱或验证码错误！") auth.py 代码
注意：
route要加methods参数，不然会报错
request.form 可以拿到前端提交上来的数据
在给数据库增加数据的时候需要给密码加密，防止密码泄露！！
password=generate_password_hash(password)
两种页面跳转方式：
1. return redirect(url_for(“auth.login”))
2. return redirect(“/auth/register1”)
#coding=utf-8from flask import Blueprint,render_template,jsonify,redirect,url_forfrom exts import mail,dbfrom flask_mail import Messagefrom flask import requestimport stringimport randomfrom models import EmailCaptchaModel,UserModelfrom .forms import RegisterFormfrom werkzeug.security import generate_password_hashbp = Blueprint("auth",__name__,url_prefix="/auth")@bp.route("/register1",methods=['GET', 'POST'])def regeister(): if request.method == 'GET': return render_template("register.html") # 使用requst.form拿到前端提交上来的数据 else: form = RegisterForm(request.form) # form.calidate() 方法可以自动的调用表单中的验证器 if form.validate(): email = form.email.data username = form.username.data password = form.password.data user = UserModel(email=email,username=username,password=generate_password_hash(password)) db.session.add(user) db.session.commit() return redirect(url_for("auth.login")) else: print(form.errors) return redirect("/auth/register1") 
