1、使用Flask-Bootstrap集成Twitter Bootstrap
项目架构
安装flask-bootstrap
Flask-Bootstrap从falsk_bootstrap命名空间中导入,然后把程序实例传入构造方法中进行初始化
Jinja2中的extends指令从Flask-Bootstrap中导入bootstrap/base.html;从而实现模板继承。Flask-bootstrap中的基摸板提供了一个网页框架,引入了Bootstrap中所有的css和JavaScript文件
基模板中定义了可在衍生模板中重定义的块。block和endblock指令定义的块中内容可添加到基模板中
2、重写基页并添加自定义错误页
改写后的目录结构
添加基页base.html
{% extends "bootstrap/base.html" %}
{% block title %}Flasky{% endblock %}
{% block navbar %}
<div class="navbar navbar-inverse" role="navigation">
<div class="container">
<div class="navbar-header">
<button type="button" class="navbar-toggle" data-toggle="collapse" data-target=".navbar-collapse">
<span class="sr-only">Toggle navigation</span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</button>
<a class="navbar-brand" href="/">Flask</a>
</div>
<div class="navbar-collapse collapse">
<ul class="nav navbar-nav">
<li><a href="/">Home</a></li>
</ul>
</div>
</div>
</div>
{% endblock %}
{% block content %}
<div class="container">
<div class="page-header">
{% block page_content %}{% endblock %}
</div>
</div>
{% endblock %}
基于base.html改写user.html
{% extends "base.html" %}
{% block title %}Flasky{% endblock %}
{ % block page_content %}
<div class="page-header">
<h1>Hello, {{ name }}!</h1>
</div>
{% endblock %}
基于base.html添加自定义错误页
404.html
{% extends "base.html" %}
{% block tittle %}Flasky - Page Not Found{% endblock %}
{% block page_content %}
<div class="page-header">
<h1>Not Found</h1>
</div>
{% endblock %}
500.html
{% extends "base.html" %}
{% block tittle %}Flasky - Internal Server Error{% endblock %}
{% block page_content %}
<div class="page-header">
<h1>Internal Server Error</h1>
</div>
{% endblock %}
在hello.py中加入404,500的视图函数
from flask import Flask,request,make_response,redirect,render_template
from flask_bootstrap import Bootstrap
app = Flask(__name__)
bootstrap = Bootstrap(app)
@app.route('/')
def index():
return render_template('index.html')
@app.errorhandler(404)
def page_not_found(e):
return render_template('404.html'), 404
@app.errorhandler(500)
def internal_server_error(e):
return render_template('500.html'), 500
@app.route('/user/<name>')
def user(name):
return render_template('user.html', name=name)
@app.route('/user/<id>')
def get_user(id):
user = load_user(id)
if not user:
abort(404)
return '<h1>Hello, %s</h1>' % user.name
if __name__ == '__main__':
bootstrap.run()
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Flask-Bootstrap的基本使用
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