flask的模板和过滤器 

#_*_ encoding: utf-8 _*_   @author: ty  hery   2019/12/20
from  flask import Flask, render_template, request

app = Flask(__name__)

@app.route('/index')
def index():
    data = {
        'name':'python01',
        'age':19,
        'my_dict':{'city':'sz'},
        'my_list':[4,5,3,6,2,1],
        'my_int':0
    }
    # return render_template("11_index.html",name='python',age=18)
    return render_template("11_index.html",**data)

def list_step_2(li):
    '''自定义的过滤器'''
    return li[::2]

# 注册过滤器
app.add_template_filter(list_step_2,'li2')

@app.template_filter('li3')
def list_step_3(li):
    '''自定义的过滤器'''
    return li[::3]

@app.route('/xss',methods=['GET','POST'])
def xss():
    text = ''
    if request.method =='POST':
        text = request.form.get('text')
    return render_template('11_xss.html',text=text)


if __name__ == '__main__':
    # print('--哈哈01--',app.url_map,'--哈哈01--')
    app.run(debug=True)
    # app.run(debug=False)

11.index.html:

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
    <p>name= {{ name }}</p>
    <p>age= {{ age }}</p>
    <p>my_dict: city = {{ my_dict['city'] }}</p>
    <p>my_dict: city = {{ my_dict.city }}</p>
    <p>my_list: {{ my_list }}</p>
    <p>my_list_first: {{ my_list| first }}</p>
    <p>my_list_last: {{ my_list| last }}</p>
    <p>my_list_lenth: {{ my_list| length }}</p>
    <p>my_list_sum: {{ my_list| sum }}</p>
    <p>my_list_sort: {{ my_list| sort }}</p>
    <p>my_list_sort: {{ [6,2,5,1,3,2,0,7]| sort }}</p>
    <p>my_list[my_int]: {{ my_list[my_int] }}</p>
    <p>my_list01: {{ my_list }}</p>
    <p>my_list[0] + my_list[1] = {{ my_list[0] + my_list[1] }}</p>
    <p>{{ 'hello' +  ' python' }}</p>
    <p>{{ '<em>hello</em>' }}</p>
    <p>{{ '<em>hello</em>'|safe }}</p>
    <p>'hello'首字母转化为大写capitalize:{{ 'hello'| capitalize }}</p>
    <p>'HELLO'全部转化为小写lower:{{ 'HELLO'| lower }}</p>
    <p>'hello'全部转化为大写upper:{{ 'hello'| upper }}</p>
    <p>每个单词的首字母大写title:{{ 'hello world I want to kill you'| title }}</p>
    <p>去掉值的首尾空格trim:{{ '  hello flask    '| trim |upper}}</p>
    <p>字符串反转:{{ 'hello world I want to kill you'| reverse }}</p>
    <p>格式化输出format:{{ '%s is %d'| format('name',17) }}</p>
    <hr>
    <P>原始的{{ my_list }}</P>
    <P>{{ my_list| li2  }}</P>
    <P>{{ my_list| li3  }}</P>


</body>
</html>

11.xss.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
    <form method = 'post'>
        <textarea name="text"></textarea>
        <input type="submit" value="提交">
    </form>
    {{ text | safe }}


</body>
</html>
posted @ 2021-04-12 22:40  ty1539  阅读(60)  评论(0)  编辑  收藏  举报