关于FLASK框架的使用
使用pycharm创建工程
在默认的templates中新增模板页面
在默认的app.py中定义路由并引用模板
@app.route("/add", methods=["GET", "POST"]) def add(): if request.method != 'POST': return render_template("login.html",info="请先登录系统") else:
username = request.form.get('username') return render_template("add.html")
关于日志,可以使用FLASK自带的LOG模块
from flask import current_app
current_app.logger.info("登录用户名:" + account)
关于模板的使用
我创建了一个base.html基础模板用于继承
<!DOCTYPE html> <html lang="en"> <head> {% block head %} <meta charset="UTF-8"> <link rel="stylesheet" href="../static/css/page.css"/> <script type="text/javascript" src="../static/js/jquery.min.js"></script> <script type="text/javascript" src="../static/js/index.js"></script> <title>{% block title %}{% endblock %} - 操作平台</title> {% endblock %} </head> <body> <div class="left"> <div class="bigTitle">CA操作平台</div> <div class="lines"> {% for menu in menu_list %} {% if choice==loop.index0 %} <div onclick="pageClick(this,{{ loop.index0 }})" class="active"><img src="static/img/icon-{{ loop.index }}.png"/> {{ menu }} </div> {% else %} <div onclick="pageClick(this,{{ loop.index0 }})"><img src="static/img/icon-{{ loop.index }}.png"/> {{ menu }} </div> {% endif %} {% endfor %} </div> </div> <div class="top"> <div class="leftTitle" id="flTitle">{{ menu_list[choice] }}</div> <div class="thisUser">{{ user_info }}</div> </div> <div class="main"> <div class="mainForm"> {% block content %} {% with messages = get_flashed_messages(with_categories=true) %} {# 对应:flash("请选择商品类型!", 'error') #} {% if messages %} {% for category,message in messages %} <span class={{ category }}>{{ message }}</span> {% endfor %} {% else %} {% endif %} {% endwith %} {% endblock %} </div> </div> <!--<div id="footer">--> <!--{% block footer %}--> <!--© Copyright 2008 by <a href="http://domain.invalid/">Keyba</a>.--> <!--{% endblock %}--> <!--</div>--> </body> </html>
其它模板
1 {% extends "base.html" %} 2 {% block title %} 3 {{ title }} 4 {% endblock %} 5 {% block content %} 6 <div class="contentTitle"> 7 <span style="color: green; ">{{title}}</span> 8 <table align="center"> 9 {% for row in rows %} 10 <tr> 11 {% for col in row %} 12 <td>{{col}}</td> 13 {% endfor %} 14 </tr> 15 {% endfor %} 16 </table> 17 <p align="center"> 18 <input type="button" name="Submit" class="button button1" onclick="history.back();" value="返回"> 19 </p> 20 </div> 21 {% endblock %}
关于FORM
建立MyForm类,这里使用了DataRequired, Email, Length三种校验方式,这里的role(下拉列表SelectField)没有设置choices属性值是为了后面可以动态from flask_wtf import FlaskFormfrom wtforms import StringField, TextAreaField, SubmitField, SelectFieldfrom wtforms.validators import DataRequired, Email, Length
class MyForm(FlaskForm): new_user = StringField(label='新账号:', validators=[DataRequired("请输入新的后台账号"), Length(6, 20, '账号长度为6到20位')], description="请输入新的后台账号", render_kw={"required": "required"}) email = StringField(label='邮箱:', validators=[DataRequired("请输入邮箱"), Email('邮箱格式错误')], description="请输入邮箱", render_kw={"required": "required"}) role = SelectField(label='角色:') label = '用户类型:' user_type = RadioField(label=label) submit = SubmitField('注册后台账号', render_kw={"class": "button button1"})
配置路由,并更新role下拉列表的值
from forms import MyForm
app.config['SECRET_KEY'] = 'string' # 通过csrf @app.route('/add/', methods=("GET", "POST")) def add(): form = MyForm() # 这里的form只会进行一次赋值,POST请求过来时,不会更新,即可以重用。 roles_list = [(str(d.get('roleId')), str(d.get("roleName"))) for d in all_roles] oc_form.role.choices = roles_list # 这里我们对之前的role进行重新赋值 form.user_type.choices = (['1', '11'], ['2', '22']) form.user_type.default = '1' form.process() # 这里我们刷新form,以使用户类型这个radioButton更新 if request.method == 'POST' and form.validate_on_submit(): return render_template("success.html", title="新增用户成功") # return redirect(url_for('pageTo', page=1) return render_template('add.html', form=form)
对于多个提交的判断,我们可以这样写
add_user = SubmitField('注册', render_kw={"class": "button button1"}) auth_user = SubmitField('认证', render_kw={"class": "button button1"}) add_something = SubmitField('发布', render_kw={"class": "button button1"})
form = MallUserForm() if request.method == 'POST': if form.add_user.data: return add_mall_user(form) elif form.auth_user.data: return auth_user(form) elif form.add_something.data: if form.mall_type.data != 'None': return add_goods(form) else: flash("请选择商品类型!", 'error') return redirect(url_for('mall_index'))
HTML模板
<form name="baseForm" action="" role="form" method="post"> <div class="contentTitle">后台账号操作</div> {% for item in form %} {% if item!=form.submit %} {% if item!=form.role %} <div> {{ item.label }}{{ item(size=20) }} <!-- 定义size --> </div> {% else %} {{ item.label }}{{ item }} <!-- 下拉列表框 --> {% endif %} {% else %} <div class="center"> {{ item }} <!-- 提交按钮 --> </div> {% endif %} {% endfor %} </form>