Python app.app 模块，root_path() 实例源码

def validate(self):
        if not Form.validate(self):
            return False
        if self.uploadfile.name not in request.files:
            self.uploadfile.errors.append("Please select a valid file.")
            return False

        self.file_ = request.files[self.uploadfile.name]
        self.filename = secure_filename(self.file_.filename)
        uploads = os.listdir(os.path.join(app.root_path, app.config['UPLOAD_FOLDER']))

        if self.filename in uploads:
            self.uploadfile.errors.append("A file with this name already exists.")
            return False
        if not self.filename:
            self.uploadfile.errors.append("Invalid file name.")
            return False
        return True

def get_uploads():
    """gets the images and other files from the uploads directory
    and returns two lists of tuples in the form (name, path)
    """

    images = [('none', '')]
    others = [('none', '')]

    uploads = os.listdir(os.path.join(app.root_path, app.config['UPLOAD_FOLDER']))
    uploads.remove(".gitignore")
    # sort by time last modified
    uploads.sort(key=lambda filename: os.stat(os.path.join(app.root_path, app.config['UPLOAD_FOLDER'], filename)).st_mtime)
    image_extensions = ["png", "jpg", "jpeg", "gif", "bmp"]

    for upload in uploads[::-1]:
        if '.' in upload and upload.rsplit('.', 1)[1].lower() in image_extensions:
            images.append(('/uploads/' + upload, upload))
        else:
            others.append(('/uploads/' + upload, upload))
    return images, others

# custom widget for rendering a TinyMCE input

def favicon():
    return send_from_directory(os.path.join(app.root_path, 'static'),
                               'favicon.ico', mimetype='image/vnd.microsoft.icon')

def browserconfig():
    return send_from_directory(os.path.join(app.root_path, 'static'), 'browserconfig.xml', mimetype='text/xml')

def manifest():
    return send_from_directory(os.path.join(app.root_path, 'static'), 'manifest.json', mimetype='application/json')

def init_app(app, logName):
    formatter = logging.Formatter(
        '%(asctime)s %(levelname)s: %(message)s '
        '[in %(pathname)s:%(lineno)d]'
    )
    debug_log = os.path.join(app.root_path, 'logs/%s_debug.log'% logName)
    not_exist_makedirs(os.path.dirname(debug_log))

    debug_file_handler = RotatingFileHandler(
        debug_log, maxBytes=100000, backupCount=10
    )

    debug_file_handler.setLevel(logging.INFO)
    debug_file_handler.setFormatter(formatter)
    app.logger.addHandler(debug_file_handler)

    error_log = os.path.join(app.root_path, 'logs/%s_error.log'% logName)
    not_exist_makedirs(os.path.dirname(error_log))
    error_file_handler = RotatingFileHandler(
        error_log, maxBytes=100000, backupCount=10
    )
    error_file_handler.setLevel(logging.ERROR)
    error_file_handler.setFormatter(formatter)
    app.logger.addHandler(error_file_handler)

    app.logger.setLevel(logging.DEBUG)

def regist(app):
    d = os.path.join(app.root_path, 'logs/debug.log')
    e = os.path.join(app.root_path, 'logs/error.log')
    path_list = {
        'debug': d,
        'error': e
    }
    common(path_list)

# from management TODO

def regist_bat(app, log_name):
    d = os.path.join(app.root_path, 'logs/%s_debug.log'% log_name)
    e = os.path.join(app.root_path, 'logs/%s_error.log'% log_name)
    path_list = {
        'debug': d,
        'error': e
    }
    common(path_list)

def rootDir_web(path):
    index_key = path.rfind('py')
    if index_key > (len(path)-4):
        return redirect(url_for('view_rents'))
    return send_from_directory(os.path.join(app.root_path, '.'), path)

def index():

    stats = ""

    try:
        stats = shelve.open(path.join(app.root_path, STATS_DB))
    except Exception as e:
        print("ERROR: Could not open STATS_DB")
        print(e)

    attempts = 0
    try:
        attempts = stats['total_attempts']
    except Exception as e:
        print(e)

    ips = 0
    try:
        ips = stats['unique_ips']
    except:
        pass

    countries = 0
    try:
        countries = stats['unique_countries']
    except:
        pass

    try:
        stats.close()
    except:
        pass

    return render_template('index.html', total_logins=attempts, unique_addresses=ips, unique_countries=countries)

def upload_file():
    form = UploadForm()
    if form.validate_on_submit():


        form.file_.save(os.path.join(app.root_path, app.config['UPLOAD_FOLDER'], form.filename))
        form.file_.close()
        time.sleep(0.5)
        return redirect('/uploads')

    return utils.render_with_navbar("upload/upload.html", form=form)

def show_uploads():
    uploads = os.listdir(os.path.join(app.root_path, app.config['UPLOAD_FOLDER']))
    uploads.remove('.gitignore')
    # sorts uploads by time last modified, which should always be the same as time uploaded
    uploads.sort(key=lambda filename: os.stat(os.path.join(app.root_path, app.config['UPLOAD_FOLDER'], filename)).st_mtime)
    return utils.render_with_navbar("upload/uploads.html", uploads=uploads[::-1])

def delete_upload():
    filename = request.args.get("name")
    if not filename:
        return redirect("/uploads")
    filename = secure_filename(filename)
    if not filename:
        return redirect("/uploads")

    try:
        os.remove(os.path.join(app.root_path, app.config['UPLOAD_FOLDER'], filename))
    except OSError:
        return redirect("/uploads")
    time.sleep(0.5)
    return redirect("/uploads")