九十三：CMS系统之cms后台登录功能

config

form

from wtforms import Form, StringField, IntegerField
from wtforms.validators import Email, InputRequired, Length

class LoginForm(Form):
    email = StringField(validators=[InputRequired(message='请输入邮箱'), Email(message='邮箱格式错误')])
    password = StringField(validators=[InputRequired(message='请输入密码'), Length(6, 20, message='密码6~20位')])
    remember = IntegerField()

from flask import Blueprint, views, render_template, request, session, redirect, url_for
from .forms import LoginForm
from .models import CMSUser
import config

bp = Blueprint('cms', __name__, url_prefix='/cms')

@bp.route('/')
def index():
    return 'cms index'

class LoginView(views.MethodView):

    def get(self, message=None):
        return render_template('cms/cms_login.html', message=message)

    def post(self):
        form = LoginForm(request.form)
        if form.validate():
            email = form.email.data
            password = form.password.data
            remember = form.remember.data
            user = CMSUser.query.filter_by(email=email).first()
            if user and user.check_password(password):
                session[config.CMS_USER_ID] = user.id
                if remember:
                    session.permanent = True  # 有效期31天
                return redirect(url_for('cms.index'))
            else:
                return self.get(message='邮箱或密码错误')
        else:
            # a = {'aaa': [xxx], 'bbb': [www]}   a.popitem()[1][0]=xxx
            message = form.errors.popitem()[1][0]  # 取第一个错误的错误信息
            return self.get(message=message)

bp.add_url_rule('/login/', view_func=LoginView.as_view('login'))