Flask（七）——登录功能实现
import random
import string
from flask import Blueprint,render_template,request,redirect,url_for,jsonify,session
from exts import mail,db
from flask_mail import Message
from models import EmailCaptchaModel,UserModel
from datetime import datetime
from .forms import RegisterForm
from werkzeug.security import generate_password_hash,check_password_hash
bp=Blueprint("user",__name__,url_prefix="/user")
#实现登录功能
@bp.route("/login",method=['GET','POST'])
def login():
if request.method=='GET':
return render_template("login.html")
else:
form = LoginForm(request.form)
if form.validate():
email=form.email.data
password=form.password.data
user=UserModel.query.filter_by(email=email).first()
if user and check_password_hash(user.password,password):
session['user_id']=user.id
return redirect("/")
else:
return redirect(url_for("user.login"))
else:
return redirect(url_for("user.login"))
@bp.route("/register",methods=['GET','POST'])
def register():
if request.method =='GET':
return render_template("register.html")
else:
form = RegisterForm(request.form)
if form.validate():
email = form.email.data
username = form.username.data
password = form.password.data
hash_password=generate_password_hash(password) #密码加密
user = UserModel(email=email, username=username, password=password)
db.session.add(user)
db.session.commit()
return redirect(url_for("user.login"))
else:
return redirect(url_for("user.register"))
@bp.route("/captcha",methods=['POST'])
def get_captcha():
email=request.form.get("email")
letter=string.ascii_letters+string.digits
captcha="".join(random.sample(letter,4))
if email:
message = Message(
subject='邮箱测试',
recipients=['[email protected]'],
body=f"您的注册验证码是：{captcha},请不要告诉任何人哦！"
)
mail.send(message)
captcha_model=EmailCaptchaModel.query.filter_by(email=email).first()
if captcha_model:
captcha_model.captcha=captcha
captcha_model.create_time=datetime.now()
db.session.commit()
else:
captcha_model=EmailCaptchaModel(email=email,captcha=captcha)
db.session.add(captcha_model)
db.session.commit()
#code:200。成功的，正常的请求
return jsonify({"code":200})
else:
#code:400 客户端错误
return jsonify({"code":400,"message":"请先传递邮箱！"})
#表单函数：
import wtforms
from wtforms.validators import length,email,EqualTo
from models import EmailCaptchaModel
class LoginForm(wtforms.Form):
email = wtforms.StringField(validators=[email()])
password = wtforms.StringField(validators=[length(min=6, max=20)])
class RegisterForm(wtforms.Form):
username=wtforms.StringField(validators=[length(min=3,max=20)])
email=wtforms.StringField(validators=[email()])
captcha=wtforms.StringField(validators=[length(min=4,max=4)])
password=wtforms.StringField(validators=[length(min=6,max=20)])
password_comfirm = wtforms.StringField(validators=[EqualTo("password")])
def validate_captcha(self,field):
captcha=field.data
email=self.email.data
captcha_model=EmailCaptchaModel.query.filter_by(email=email).first()
if not captcha_model or captcha_model.captcha.lower()!=captcha.lower():
raise wtforms.ValidationError("邮箱验证码错误！")
def validate_email(self,field):
email=field.data
user_model=UserModel.query.filter_by(email=email).first()
if user_model:
raise wtforms.ValidationError("邮箱已经存在！")
{% extends "base.html" %}
{% block title %}问答-登录{% endblock %}
{% block head %}
{% endblock %}
{% block body %}
{% endblock %}但是如果密码与注册不匹配时，并不会提示错误消息，会使用户使用不便，所以需要改进。
import random
import string
from flask import Blueprint,render_template,request,redirect,url_for,jsonify,session,flash
from exts import mail,db
from flask_mail import Message
from models import EmailCaptchaModel,UserModel
from datetime import datetime
from .forms import RegisterForm
from werkzeug.security import generate_password_hash,check_password_hash
bp=Blueprint("user",__name__,url_prefix="/user")
#实现登录功能
@bp.route("/login",method=['GET','POST'])
def login():
if request.method=='GET':
return render_template("login.html")
else:
form = LoginForm(request.form)
if form.validate():
email=form.email.data
password=form.password.data
user=UserModel.query.filter_by(email=email).first()
if user and check_password_hash(user.password,password):
session['user_id']=user.id
return redirect("/")
else:
flash("邮箱和密码不匹配！")
return redirect(url_for("user.login"))
else:
flash("邮箱或密码格式错误！")
return redirect(url_for("user.login")){% extends "base.html" %}
{% block title %}问答-登录{% endblock %}
{% block head %}
{% endblock %}
{% block body %}
{% endblock %}结果：
