Flask知识点二

时间：2023-01-29 21:06:03

一  模板

1、模板的使用

Flask使用的是Jinja2模板，所以其语法和Django无差别

2、自定义模板方法

Flask中自定义模板方法的方式和Bottle相似，创建一个函数并通过参数的形式传入render_template，如：

<!DOCTYPE html>

<html>

<head lang="en">

    <meta charset="UTF-8">

    <title></title>

</head>

<body>

    <h1>自定义函数</h1>

    {{ww()|safe}}

</body>

</html>

HTML

from flask import Flask,render_template

app = Flask(__name__)

def wupeiqi():

    return '<h1>Wupeiqi</h1>'

@app.route('/login', methods=['GET', 'POST'])

def login():

    return render_template('login.html', ww=wupeiqi)

app.run()

run.py

<!DOCTYPE html>

<html lang="en">

<head>

    <meta charset="UTF-8">

    <title>Title</title>

</head>

<body>

    {% macro input(name, type='text', value='') %}

        <input type="{{ type }}" name="{{ name }}" value="{{ value }}">

    {% endmacro %}

    {{ input('n1') }}

    {% include 'tp.html' %}

    <h1>asdf{{ v.k1}}</h1>

</body>

</html>

其他

二  请求和响应

from flask import Flask

    from flask import request

    from flask import render_template

    from flask import redirect

    from flask import make_response

    app = Flask(__name__)

    @app.route('/login.html', methods=['GET', "POST"])

    def login():

        # 请求相关信息

        # request.method

        # request.args

        # request.form

        # request.values

        # request.cookies

        # request.headers

        # request.path

        # request.full_path

        # request.script_root

        # request.url

        # request.base_url

        # request.url_root

        # request.host_url

        # request.host

        # request.files

        # obj = request.files['the_file_name']

        # obj.save('/var/www/uploads/' + secure_filename(f.filename))

        # 响应相关信息

        # return "字符串"

        # return render_template('html模板路径',**{})

        # return redirect('/index.html')

        # response = make_response(render_template('index.html'))

        # response是flask.wrappers.Response类型

        # response.delete_cookie('key')

        # response.set_cookie('key', 'value')

        # response.headers['X-Something'] = 'A value'

        # return response

        return "内容"

    if __name__ == '__main__':

        app.run()

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