flask之wtform與flask-session組件
阿新 • • 發佈：2018-01-10
必須 cli method ret files cor pro dir users
1.wtform
from flask import Flask, render_template, request, redirect from wtforms import Form from wtforms.fields import core from wtforms.fields import html5 from wtforms.fields import simple from wtforms import validators from wtforms import widgets app = Flask(__name__, template_folder=‘templates‘) app.debug = True class MyValidator(object): def __init__(self,message): self.message = message def __call__(self, form, field): print(field.data) if field.data == ‘王浩‘: return None raise validators.StopValidation(self.message) class LoginForm(Form): name= simple.StringField( label=‘用戶名‘, validators=[ # MyValidator(message=‘用戶名必須等於王浩‘) validators.DataRequired(message=‘用戶名不能為空.‘), validators.Length(min=6, max=18, message=‘用戶名長度必須大於%(min)d且小於%(max)d‘) ], widget=widgets.TextInput(), render_kw={‘class‘: ‘form-control‘} ) pwd = simple.PasswordField( label=‘密碼‘, validators=[ validators.DataRequired(message=‘密碼不能為空.‘), validators.Length(min=8, message=‘用戶名長度必須大於%(min)d‘), validators.Regexp(regex="^(?=.*[a-z])(?=.*[A-Z])(?=.*\d)(?=.*[$@$!%*?&])[A-Za-z\d$@$!%*?&]{8,}", message=‘密碼至少8個字符，至少1個大寫字母，1個小寫字母，1個數字和1個特殊字符‘) ], widget=widgets.PasswordInput(), render_kw={‘class‘: ‘form-control‘} ) @app.route(‘/login‘, methods=[‘GET‘, ‘POST‘]) def login(): if request.method == ‘GET‘: form = LoginForm() return render_template(‘login.html‘, form=form) else: form = LoginForm(formdata=request.form) if form.validate(): print(‘用戶提交數據通過格式驗證，提交的值為：‘, form.data) else: print(form.errors) return render_template(‘login.html‘, form=form) # ########################### 用戶註冊 ########################## class RegisterForm(Form): name = simple.StringField( label=‘用戶名‘, validators=[ validators.DataRequired() ], widget=widgets.TextInput(), render_kw={‘class‘: ‘form-control‘}, default=‘alex‘ ) pwd = simple.PasswordField( label=‘密碼‘, validators=[ validators.DataRequired(message=‘密碼不能為空.‘) ], widget=widgets.PasswordInput(), render_kw={‘class‘: ‘form-control‘} ) pwd_confirm = simple.PasswordField( label=‘重復密碼‘, validators=[ validators.DataRequired(message=‘重復密碼不能為空.‘), validators.EqualTo(‘pwd‘, message="兩次密碼輸入不一致") ], widget=widgets.PasswordInput(), render_kw={‘class‘: ‘form-control‘} ) email = html5.EmailField( label=‘郵箱‘, validators=[ validators.DataRequired(message=‘郵箱不能為空.‘), validators.Email(message=‘郵箱格式錯誤‘) ], widget=widgets.TextInput(input_type=‘email‘), render_kw={‘class‘: ‘form-control‘} ) gender = core.RadioField( label=‘性別‘, choices=( (1, ‘男‘), (2, ‘女‘), ), coerce=int ) city = core.SelectField( label=‘城市‘, choices=( (‘bj‘, ‘北京‘), (‘sh‘, ‘上海‘), ) ) hobby = core.SelectMultipleField( label=‘愛好‘, choices=( (1, ‘籃球‘), (2, ‘足球‘), ), coerce=int ) favor = core.SelectMultipleField( label=‘喜好‘, choices=( (1, ‘籃球‘), (2, ‘足球‘), ), widget=widgets.ListWidget(prefix_label=False), option_widget=widgets.CheckboxInput(), coerce=int, default=[1, 2] ) def __init__(self, *args, **kwargs): super(RegisterForm, self).__init__(*args, **kwargs) self.favor.choices = ((1, ‘籃球‘), (2, ‘足球‘), (3, ‘羽毛球‘)) def validate_pwd_confirm(self, field): """ 自定義pwd_confirm字段規則，例：與pwd字段是否一致 :param field: :return: """ # 最開始初始化時，self.data中已經有所有的值 if field.data != self.data[‘pwd‘]: # raise validators.ValidationError("密碼不一致") # 繼續後續驗證 raise validators.StopValidation("密碼不一致") # 不再繼續後續驗證 @app.route(‘/register‘, methods=[‘GET‘, ‘POST‘]) def register(): if request.method == ‘GET‘: # 設置默認值 form = RegisterForm(data={‘gender‘: 1}) return render_template(‘register.html‘, form=form) else: form = RegisterForm(formdata=request.form) if form.validate(): print(‘用戶提交數據通過格式驗證，提交的值為：‘, form.data) else: print(form.errors) return render_template(‘register.html‘, form=form) if __name__ == ‘__main__‘: app.run()
2.flask-session
#!/usr/bin/env python # -*- coding:utf-8 - import redis from flask import Flask,current_app,session from flask_session import Session app = Flask(__name__) app.debug = True app.secret_key = ‘xxxx‘ # 為Flask-session組件提供的配置 # app.config[‘SESSION_TYPE‘] = ‘redis‘ # session類型為redis # app.config[‘SESSION_REDIS‘] = redis.Redis(host=‘127.0.0.1‘, port=‘6379‘, password=‘123123‘) # 用於連接redis的配置 # app.config[‘SESSION_KEY_PREFIX‘] = ‘session:‘ # 保存到session中的值的前綴 # app.config[‘SESSION_PERMANENT‘] = False # 如果設置為True，則關閉瀏覽器session就失效。 # app.config[‘SESSION_USE_SIGNER‘] = False # 是否對發送到瀏覽器上 session:cookie值進行加密 # Session(app) # # import memcache # app.config[‘SESSION_TYPE‘] = ‘memcached‘ # session類型為redis # app.config[‘SESSION_PERMANENT‘] = True # 如果設置為True，則關閉瀏覽器session就失效。 # app.config[‘SESSION_USE_SIGNER‘] = False # 是否對發送到瀏覽器上session的cookie值進行加密 # app.config[‘SESSION_KEY_PREFIX‘] = ‘session:‘ # 保存到session中的值的前綴 # app.config[‘SESSION_MEMCACHED‘] = memcache.Client([‘10.211.55.4:12000‘]) # Session(app) app.config[‘SESSION_TYPE‘] = ‘filesystem‘ # session類型為redis app.config[‘SESSION_FILE_DIR‘] = r‘C:\Users\Administrator\PycharmProjects\day121\2.flask-session組件‘ # session類型為redis app.config[‘SESSION_FILE_THRESHOLD‘] = 500 # 存儲session的個數如果大於這個值時，就要開始進行刪除了 app.config[‘SESSION_FILE_MODE‘] = 384 # 文件權限類型 app.config[‘SESSION_PERMANENT‘] = True # 如果設置為True，則關閉瀏覽器session就失效。 app.config[‘SESSION_USE_SIGNER‘] = False # 是否對發送到瀏覽器上session的cookie值進行加密 app.config[‘SESSION_KEY_PREFIX‘] = ‘session:‘ # 保存到session中的值的前綴 Session(app) @app.route(‘/index‘) def index(): session[‘k1‘] = ‘v1‘ return ‘xx‘ if __name__ == ‘__main__‘: app.run()
flask之wtform與flask-session組件