flask_admin 主页支持markdown写入

人比较懒 ，看不懂评论告诉我哈

vim view_markdown_index.py

#!/usr/bin/python3
# encoding: utf-8 
# @Time    : 2020/3/26 15:37
# @author  : zza
# @Email   : 740713651@qq.com
# @File    : readme_helper.py
import datetime
import os
from shutil import copyfile

import markdown
import markdown.extensions.fenced_code
from flask import flash, redirect, request, send_from_directory
from flask_admin import AdminIndexView, expose
from pygments.formatters.html import HtmlFormatter
from werkzeug.utils import secure_filename

formatter = HtmlFormatter(style="emacs", full=True, cssclass="codehilite")
css_string = formatter.get_style_defs()


class MarkdownIndexView(AdminIndexView):

    @expose()
    def index(self):
        """获取readme文件作为index页面帮助文档
        copy from https://github.com/solitudenote/gitkeeper/blob/d42f5990b05cf28cee12f20780e7794cd3579ead/app.py
        """
        # get file
        readme_file = open("README.md", "r", encoding="utf8")
        md_template_string = markdown.markdown(readme_file.read(), extensions=["fenced_code", "codehilite"])
        md_css_string = "<style>" + css_string + "</style>"
        md_template = md_css_string + md_template_string
        return self.render(self._template, readme_md=md_template, upload_readme_url="/admin/upload_form")

    @expose('/upload_form', methods=['POST'])
    def upload_file(self):
        # check if the post request has the file part
        if 'file' not in request.files:
            flash('No file part')
            return redirect('/admin/')
        file = request.files['file']
        if file.filename == '':
            flash('No file selected for uploading')
            return redirect('/admin/')
        if file and file.filename == "README.md":
            bak_file = "README.md" + ".{}.bak".format(datetime.datetime.now().isoformat()).replace(":", "-")
            copyfile("README.md", bak_file)
            filename = secure_filename(file.filename)
            file.save(filename)
            flash('README.md上传成功')
            return redirect('/admin/')
        else:
            flash('文件名必须为README.md')
            return redirect('/admin/')

    @expose('/export')
    def export(self):
        return send_from_directory(os.path.abspath("."), "README.md", as_attachment=True)  # as_a


admin_index_view = MarkdownIndexView(name="主页", template="index.html")

vim index.html

{% extends 'admin/index.html' %}

{% block page_body %}
    {{ super() }}

    <table class="markdown-table  table-hover searchable">
        <tr>
            <td>
                <a href="{{ get_url('.export') }}"
                   title="{{ _gettext('Export') }}">{{ _gettext('Export') + ' ' + export_type|upper }}</a>
            </td>

            <form id="form" method="post" action={{ upload_readme_url }} enctype="multipart/form-data">
                <td>
                    <label class="input-file">
                        <a title="{{ _gettext('Import') }}"> {{ _gettext('Import') }} </a>
                        <input type="file" name="file" id="upload-file" autocomplete="off" hidden required>
                    </label>
                </td>
            </form>

        </tr>
    </table>
    <br>
    <hr/>
    <script>

        let __main = function () {
            document.getElementById("upload-file").onchange = function () {
                document.getElementById("form").submit();
            };
        }

        __main()
    </script>

    {{ readme_md|safe }}

    <style>
        .markdown-table {
            width: 200px;
            float: right;

        }

        .markdown-table label {
            font-weight: normal;
        }

        [hidden] {
            display: none !important;
        }

    </style>
{% endblock %}

vim app,py

from view_markdown_index import admin_index_view
from flask import Flask

app = Flask(__name__)
admin_view = Admin(
    app,
    template_mode='bootstrap3',
    index_view=admin_index_view,
    base_template=r'layout.html',
    category_icon_classes={'Profiles': 'glyphicon glyphicon-wrench'},
)

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