Flask快速入门(5) — 模板渲染

视图函数

from flask import Flask,request,render_template,Markup
app = Flask(__name__)

@app.route('/',endpoint='index')
def index():
    age = 18
    classes = '班级'
    schools = ['s1','s2','s3']
    USER = {
        1: {'name': 'Nick', 'age': 18, 'hobby': ['study', 'swimming']},
        2: {'name': 'Bob', 'age': 19, 'hobby': ['basketball', 'game']},
        3: {'name': 'Link', 'age': 17, 'hobby': ['sing', 'dance']},
        4: {'name': 'Sean', 'age': 20, 'hobby': ['game', 'walking']},
    }
    safe_test = '<h1>测试xss</h1>'
    return render_template('index.html',info=USER,classes=classes,schools=schools,age=age,safe_test=safe_test)

@app.route('/login')
def login():
    return Markup('<h1>我最帅</h1>')  # 

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

index.html

<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<!--字符串渲染-->
<p>
    classes: {{ classes }}
</p>

<!--列表取值-->
{{schools.0}}
{{schools[1]}}
{{schools[:-1]}}
<!--列表循环-->
<ul>
    {% for school in schools %}
    <li>{{ school }}</li>
    {% endfor%}
</ul>

<!--字典循环-->
{% for key,val in info.items() %}  
    {{ val.name}}
    {{ val['name']}}
    {{ val.get('name')}}
{% endfor %}

<!--逻辑判断-->
{% if age > 10 %}
    <h1>{{age}}</h1>
{% endif %}
    
无safe时，不解析标签 {{safe_test}}
<br>
有safe时，解析标签{{safe_test|safe}}
</body>
</html>

与django不同的是，在flask中模板渲染可以用[],()之类的，执行函数，传参数。

from flask import Flask,render_template,Markup,jsonify,make_response
app = Flask(__name__)

def func1(arg):
    return Markup("<input type='text' value='%s' />" %(arg,))
@app.route('/')
def index():
    return render_template('index.html',ff = func1)  # 传了函数过去

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

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
	<!--执行函数-->
    {{ff('六五')}}  
	{{ff('六五')|safe}}
</body>
</html>

注意：

1.Markup等价django的mark_safe

2.用于模板的extends,include与django中的一模一样