python flask web开发实战 Jinja2模板

http://jinja.pocoo.org/docs/2.10/templates/#builtin-filters

templates/index.html

Hello World!

templates/user.html

Hello, {{ name }}!

---

渲染模板：

from flask import Flask,render_template
@app.route('/')
def index():
return render_template('index.html')
@app.route('/user/')
def user(name):
return render_template('user.html', name=name)

---

A value from a dictionary: {{ mydict['key'] }}.

A value from a list: {{ mylist[3] }}.

A value from a list, with a variable index: {{ mylist[myintvar] }}.

A value from an object's method: {{ myobj.somemethod() }}.

Hello, {{ name|capitalize }}
name|capitalize
变量过滤：capitalize
safe 不转义
lower
upper
title
trim
striptags

---

控制语句

{% if user %}
Hello, {{ user }}!
{% else %}
Hello, Stranger!
{% endif %}

{% for comment in comments %}

• {{ comment }}

{% endfor %}

使用宏

{% macro render_comment(comment) %}

{{ comment }}

{% endmacro %}

{% for comment in comments %}
{{ render_comment(comment) }}
{% endfor %}

包含

{% include 'common.html' %}

block占位符

{% block head %}

{% endblock %}


{% block body %}
{% endblock %}

extends

{% extends "base.html" %}
{% block title %}Index{% endblock %}
{% block head %}
{{ super() }}

{% endblock %}
{% block body %}

Hello, World!

{% endblock %}