如何删除服务器上的文件与瓶

Question

当我使用此功能上传文件：

@app.route('/add_item', methods=['GET', 'POST']) 
@login_required 
def new_item(): 
    error = None 
    form = AddItemForm(request.form) 
    if request.method == 'POST': 
     file = request.files['file'] 
     if file and allowed_file(file.filename) and form.name.data != "" and form.description.data != "": 
      filename = secure_filename(file.filename) 
      file.save(os.path.join(app.config['UPLOADED_ITEMS_DEST'], filename)) 
      new_item = Item(
       filename, 
       form.name.data, 
       form.description.data, 
       form.price.data, 
       form.age.data, 
       form.particles.data, 
       form.category.data, 
       '1', 
       ) 
      db.session.add(new_item) 
      db.session.commit() 
      return redirect(url_for('admin_items')) 
     else: 
      return render_template('admin_items.html', form=form, error=error) 
    if request.method == 'GET': 
     return redirect(url_for('admin_items')) 

如何删除与删除项目的功能此上传的文件？问题是，我目前的功能只删除项目的内容（描述，价格等），但上传到文件夹的实际文件当然不会被删除！这造成了一个问题！

这里是我的删除功能：

# Delete Items: 
@app.route('/delete_item/<int:item_id>/', methods=['GET', 'POST']) 
@login_required 
def delete_item(item_id): 
    new_id = item_id 
    os.remove(os.path.join(app.config['UPLOADED_ITEMS_DEST'], filename)) 
    db.session.query(Item).filter_by(item_id=new_id).delete() 
    db.session.commit() 

    return redirect(url_for('admin_items')) 

Answer 1

@app.route('/delete_item/<int:item_id>/', methods=['GET', 'POST']) 
@login_required 
def delete_item(item_id): 
    new_id = item_id 
    item = self.session.query(Item).get(item_id) 
    os.remove(os.path.join(app.config['UPLOADED_ITEMS_DEST'], item.filename)) 
    self.session.delete(item) 
    db.session.commit() 
    return redirect(url_for('admin_items')) 

当然你应该实现适当的错误捕获。看一看：

https://github.com/dpgaspar/Flask-AppBuilder/blob/master/flask_appbuilder/models/sqla/interface.py#L366

Answer 2

你可以在Python运行命令

使用os.system（ 'RM THE_FILE_TO_DELETE'）