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
{% extends "base.html" %}
{% block title %}
{{ title }}
{% endblock %}
{% block content %}
<div class="contentTitle">
<span style="color: green; ">{{title}}</span>
<table align="center">
{% for row in rows %}
<tr>
{% for col in row %}
<td>{{col}}</td>
{% endfor %}
</tr>
{% endfor %}
</table>
<p align="center">
<input type="button" name="Submit" class="button button1" onclick="history.back();" value="返回">
</p>
</div>
{% 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 = (['', ''], ['', ''])
form.user_type.default = ''
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>