• 25-----BBS论坛


    BBS论坛(二十五)

    25.1.发布帖子后台逻辑完成

    (1)apps/models.py

    class PostModel(db.Model):
        __tablename__ = 'post'
        id = db.Column(db.Integer, primary_key=True, autoincrement=True)
        title = db.Column(db.String(200), nullable=False)
        content = db.Column(db.Text, nullable=False)
        create_time = db.Column(db.DateTime, default=datetime.now)
        board_id = db.Column(db.Integer, db.ForeignKey('board.id'))
        board = db.relationship('BoardModel', backref='posts')

    (2)front/decorater.py

    from flask import session,redirect,url_for
    from functools import wraps
    import config
    
    
    def login_requried(func):
        @wraps(func)
        def wrapper(*args,**kwargs):
            if  config.FRONT_USER_ID in session:
                return func(*args,**kwargs)
            else:
                return redirect(url_for('front.signin'))
        return wrapper

    (3)front/forms.py

    class AddPostForm(BaseForm):
        title=StringField(validators=[InputRequired(message='请输入标题')])
        content=StringField(validators=[InputRequired(message='请输入内容')])
        board_id=IntegerField(validators=[InputRequired(message='请选择版块')])

    (4)front/views.py

    @bp.route('/apost/', methods=['POST', 'GET'])
    @login_requried
    def apost():
        if request.method == 'GET':
            boards = BoardModel.query.all()
            return render_template('front/front_apost.html', boards=boards)
        else:
            form = AddPostForm(request.form)
            if form.validate():
                title = form.title.data
                content = form.content.data
                board_id = form.board_id.data
                board = BoardModel.query.get(board_id)
                if not board:
                    return restful.params_error(message='没有这个版块')
                post = PostModel(title=title, content=content, board_id=board_id)
                post.board = board
                db.session.add(post)
                db.session.commit()
                return restful.success()
            else:
                return restful.params_error(message=form.get_error())

    25.2.发布帖子界面布局完成

    (1)把ueditor静态文件放到static目录下

    (2)apps目录下新建ueditor目录

    init.py

    from .ueditor import bp

    ueditor.py

    #encoding: utf-8
    
    from flask import (
        Blueprint,
        request,
        jsonify,
        url_for,
        send_from_directory,
        current_app as app
    )
    import json
    import re
    import string
    import time
    import hashlib
    import random
    import base64
    import sys
    import os
    from urllib import parse
    # 更改工作目录。这么做的目的是七牛qiniu的sdk
    # 在设置缓存路径的时候默认会设置到C:/Windows/System32下面
    # 会造成没有权限创建。
    os.chdir(os.path.abspath(sys.path[0]))
    try:
        import qiniu
    except:
        pass
    from io import BytesIO
    
    bp = Blueprint('ueditor',__name__,url_prefix='/ueditor')
    
    UEDITOR_UPLOAD_PATH = ""
    UEDITOR_UPLOAD_TO_QINIU = False
    UEDITOR_QINIU_ACCESS_KEY = ""
    UEDITOR_QINIU_SECRET_KEY = ""
    UEDITOR_QINIU_BUCKET_NAME = ""
    UEDITOR_QINIU_DOMAIN = ""
    
    @bp.before_app_first_request
    def before_first_request():
        global UEDITOR_UPLOAD_PATH
        global UEDITOR_UPLOAD_TO_QINIU
        global UEDITOR_QINIU_ACCESS_KEY
        global UEDITOR_QINIU_SECRET_KEY
        global UEDITOR_QINIU_BUCKET_NAME
        global UEDITOR_QINIU_DOMAIN
        UEDITOR_UPLOAD_PATH = app.config.get('UEDITOR_UPLOAD_PATH')
        if UEDITOR_UPLOAD_PATH and not os.path.exists(UEDITOR_UPLOAD_PATH):
            os.mkdir(UEDITOR_UPLOAD_PATH)
    
        UEDITOR_UPLOAD_TO_QINIU = app.config.get("UEDITOR_UPLOAD_TO_QINIU")
        if UEDITOR_UPLOAD_TO_QINIU:
            try:
                UEDITOR_QINIU_ACCESS_KEY = app.config["UEDITOR_QINIU_ACCESS_KEY"]
                UEDITOR_QINIU_SECRET_KEY = app.config["UEDITOR_QINIU_SECRET_KEY"]
                UEDITOR_QINIU_BUCKET_NAME = app.config["UEDITOR_QINIU_BUCKET_NAME"]
                UEDITOR_QINIU_DOMAIN = app.config["UEDITOR_QINIU_DOMAIN"]
            except Exception as e:
                option = e.args[0]
                raise RuntimeError('请在app.config中配置%s!'%option)
    
        csrf = app.extensions.get('csrf')
        if csrf:
            csrf.exempt(upload)
    
    
    def _random_filename(rawfilename):
        letters = string.ascii_letters
        random_filename = str(time.time()) + "".join(random.sample(letters,5))
        filename = hashlib.md5(random_filename.encode('utf-8')).hexdigest()
        subffix = os.path.splitext(rawfilename)[-1]
        return filename + subffix
    
    
    @bp.route('/upload/',methods=['GET','POST'])
    def upload():
        action = request.args.get('action')
        result = {}
        if action == 'config':
            config_path = os.path.join(bp.static_folder or app.static_folder,'ueditor','config.json')
            with open(config_path,'r',encoding='utf-8') as fp:
                result = json.loads(re.sub(r'/*.**/','',fp.read()))
    
        elif action in ['uploadimage','uploadvideo','uploadfile']:
            image = request.files.get("upfile")
            filename = image.filename
            save_filename = _random_filename(filename)
            result = {
                'state': '',
                'url': '',
                'title': '',
                'original': ''
            }
            if UEDITOR_UPLOAD_TO_QINIU:
                if not sys.modules.get('qiniu'):
                    raise RuntimeError('没有导入qiniu模块!')
                buffer = BytesIO()
                image.save(buffer)
                buffer.seek(0)
                q = qiniu.Auth(UEDITOR_QINIU_ACCESS_KEY, UEDITOR_QINIU_SECRET_KEY)
                token = q.upload_token(UEDITOR_QINIU_BUCKET_NAME)
                ret,info = qiniu.put_data(token,save_filename,buffer.read())
                if info.ok:
                    result['state'] = "SUCCESS"
                    result['url'] = parse.urljoin(UEDITOR_QINIU_DOMAIN,ret['key'])
                    result['title'] = ret['key']
                    result['original'] = ret['key']
            else:
                image.save(os.path.join(UEDITOR_UPLOAD_PATH, save_filename))
                result['state'] = "SUCCESS"
                result['url'] = url_for('ueditor.files',filename=save_filename)
                result['title'] = save_filename,
                result['original'] = image.filename
    
        elif action == 'uploadscrawl':
            base64data = request.form.get("upfile")
            img = base64.b64decode(base64data)
            filename = _random_filename('xx.png')
            filepath = os.path.join(UEDITOR_UPLOAD_PATH,filename)
            with open(filepath,'wb') as fp:
                fp.write(img)
            result = {
                "state": "SUCCESS",
                "url": url_for('files',filename=filename),
                "title": filename,
                "original": filename
            }
        return jsonify(result)
    
    
    @bp.route('/files/<filename>/')
    def files(filename):
        return send_from_directory(UEDITOR_UPLOAD_PATH,filename)
    View Code

    (3)perfect_bbs.py

    from apps.ueditor import bp as ueditor_bp
    
    app.register_blueprint(ueditor_bp)

    (4)front/index.html

    <a class="btn btn-warning btn-block" href="{{ url_for('front.apost') }}" id="add-post-btn">发布帖子</a>

    (5)front/apost.html

    {% extends 'front/front_base.html' %}
    {% from 'common/_macros.html' import static %}
    
    {% block title %}
        发布帖子
    {% endblock %}
    
    {% block head %}
        <script src="{{ static('ueditor/ueditor.config.js') }}"></script>
        <script src="{{ static('ueditor/ueditor.all.min.js') }}"></script>
        <script src="{{ static('front/js/front_apost.js') }}"></script>
    {% endblock %}
    
    {% block body %}
        <form method="post">
            <div class="form-group">
                <div class="input-group">
                    <span class="input-group-addon">标题</span>
                    <input type="text" name="title" class="form-control">
                </div>
            </div>
    
            <div class="form-group">
                <div class="input-group">
                    <span class="input-group-addon">版块</span>
                    <select name="board_id" class="form-control">
                        {% for board in boards %}
                            <option value="{{ board.id }}">{{ board.name }}</option>
    
                        {% endfor %}
    
                    </select>
                </div>
            </div>
    
            <div class="form-group">
                <script id="ueditor" type="text/plain" style="height:500px;"></script>
            </div>
    
            <div class="form-group">
                <button class="btn btn-danger" id="submit-btn">发布帖子</button>
            </div>
    
        </form>
    
    {% endblock %}

    (6)front/js/apost.js

    $(function () {
        var ue=UE.getEditor('ueditor',{'serverUrl':'/ueditor/upload/'});
    });

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  • 原文地址:https://www.cnblogs.com/edeny/p/10021165.html
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