报错: UnboundLocalError: local variable 'total_page' referenced before assignment
news_list = []
# 修改
total_page =1
current_page = 1
try: paginate = user.collection_news.paginate(page, constants, USER_COLLECTION_MAX_NEWS, False) current_page = paginate.page total_page = paginate.pages news_list = paginate.items except Exception as e: current_app.logger.error(e) news_dict_li = [] for news in news_list: news_dict_li.append(news.to_dict()) data = { "total_page": total_page, "current_page": current_page, "collections": news_dict_li }
报错: 使用前 未定义 total_page
原因: 赋值 current_page和 total_page 在try中,如果失败将不会赋值 所以提前在代码前定义变量 total_page = 1 current_page = 1 可以解决报错
报错:ERROR in views [C:Users93263myprojectinformation27infomodulesprofileviews.py:33]:
'AppenderBaseQuery' object has no attribute 'pagnate'
报错: 没有对象pagnae
原因: 在view 33行 返回的错误日志,未找到对象方法pagnate
报错:'<' not supported between instances of 'bool' and 'module'
ERROR:info:'<' not supported between instances of 'str' and 'int'
原: page = request.args.get("p", 1) 修改: page = request.args.get("p", 1) page = int(page)
原:
paginate = user.collection_news.paginate(page, constants,USER_COLLECTION_MAX_NEWS, False)
修改:paginate = user.collection_news.paginate(page, constants.USER_COLLECTION_MAX_NEWS, False)
报错: 参数不支持 bool类型和module类型进行比较 、 不支持str类型和 int类型进行比较
原因: 调用方法时候 输入参数错误
报错:ImportError: cannot import name 'db'
报错:循环导入
原因:在创建前使用或者导入了db 通过逐步排查 解决问题
报错:TypeError: page_not_found() takes 0 positional arguments but 1 was given
from info.utils.common import user_login_data @app.errorhandler(404) @user_login_data def page_not_found(e): #接收参数e user = g.user data = {"user": user.to_dict() if user else None} return render_template("news/404.html", data=data)
报错:需要给你page_not_found一个参数
原因:当使用errorhandler(404) 装饰器的时候 会返回一个404参数 需要方法去接收e ,ps: errorhandler(错误码) 返回页面
报错:前端页面:Failed to load resource: the server responded with a status of 405 (METHOD NOT ALLOWED)
后端页面:AttributeError: 'NoneType' object has no attribute 'get'
报错: 没有get这个参数
原因: 视图没有增加methods =["POST"]