python Flask学习笔记（二）-集成bootstrap

Flask Bootstrap起步

pip3 install flask-script
pip3 install flask-bootstrap

flask bootstrap使用

hello.py

from flask import Flask, render_template
from flask_script import Manager
from flask_bootstrap import Bootstrap

app = Flask(__name__)

manager = Manager(app)
bootstrap = Bootstrap(app)

@app.route('/')
def index():
    return render_template('index.html')

@app.route('/user/')
def user(name):
    return render_template('user.html', name=name)


if __name__ == '__main__':
    manager.run()

user.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 navigationspan>
                <span class="icon-bar">span>
                <span class="icon-bar">span>
                <span class="icon-bar">span>
            button>
            <a class="navbar-brand" href="/">Flaskya>
        div>
        <div class="navbar-collapse collapse">
            <ul class="nav navbar-nav">
                <li><a href="/">Homea>li>
            ul>
        div>
    div>
div>
{% endblock %}

{% block content %}
<div class="container">
    <div class="page-header">
        <h1>Hello, {{ name }}!h1>
    div>
div>
{% endblock %}

自定义基类模板

base.html

# 集成自bootstrap/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 navigationspan>
                <span class="icon-bar">span>
                <span class="icon-bar">span>
                <span class="icon-bar">span>
            button>
            <a class="navbar-brand" href="/">Flaskya>
        div>
        <div class="navbar-collapse collapse">
            <ul class="nav navbar-nav">
                <li><a href="/">Homea>li>
            ul>
        div>
    div>
div>
{% endblock %}

{% block content %}
<div class="container">
   {% block page_content %}{% endblock %}
div>
{% endblock %}

继承自自定义base.html

user.html

{% extends "base.html" %}

{% block title %}Flasky{% endblock %}
{% block page_content %}
    <div class="page-hearder">
        <h1>Hello, {{ name }}h1>
    div>
{% endblock %}

自定义错误页面 404.html

# 继承自定义base.html
{% extends "base.html" %}
{% block title %}Flasky-Page Not Found {% endblock %}
{% block page_content %}
    <div class="page-header">
        <h1>Not Foundh1>
    div>
{% endblock %}

使用Flask-Moment本地化日期时间

moment.js可以在浏览器渲染日期和事件，Flask-moment是一个Flask扩展，可以把moment.js集成到Jinja模板中

pip install flask-moment

在template/base.html中引入moment.js

{% block script %}
    {{ super() }}
    {{ moment.include_moment() }}
{% endblock %}

hello.py中加入moment = Moment(app)
即

from flask import Flask, render_template
from flask_script import Manager
from flask_bootstrap import Bootstrap
from datetime import datetime
from flask_moment import Moment

app = Flask(__name__)
moment = Moment(app)
manager = Manager(app)
bootstrap = Bootstrap(app)


@app.route('/')
def index():
    return render_template('index.html', current_time=datetime.utcnow())


@app.route('/user/')
def user(name):
    return render_template('user.html', name=name)


if __name__ == '__main__':
    manager.run()

index.html

{% extends "base.html" %}
{% block content %}
    {{ super() }}
    <h1>Hello the local date and time is {{ moment(current_time).format('LLLL') }}h1>
    <p>That was {{ moment(current_time).fromNow(refresh=True) }}p>
{%  endblock %}

发现时间总是不能正常显示，查看页面代码发现 时间的样式表中style="display:none"改为style="display:block"即可正常显示
效果如下图所示

本文参考《Flask Web开发-基于Python的Web应用开发实战》