Question

我正在使用Flask

我总是收到错误消息“错误”：“列表”对象没有属性“ add_columns”。我试图对其进行谷歌搜索，但似乎没有人遇到类似的问题。

我正在使用mysql。

def index():

    columns = [
        ColumnDT(Rawlog.id),
        ColumnDT(Rawlog.one),
        ColumnDT(Rawlog.two),
        ColumnDT(Rawlog.three)
    ]

    query = session.query(Rawlog).all()

    params = request.args.to_dict()

    rowTable = DataTables(params, query, columns)

    response = jsonify(rowTable.output_result())
    response.headers.add('Access-Control-Allow-Origin', '*')
    return response

如果我只是在没有数据表的情况下执行操作，它将获取所有行

usersArr = []
for user in query:
    usersArr.append(user.toDict()) 
return jsonify(usersArr)

这是我的模特

    # coding: utf-8
    from app import db
    from sqlalchemy import Column, DateTime, Integer, String
    from sqlalchemy.schema import FetchedValue
    from flask_sqlalchemy import SQLAlchemy
    from sqlalchemy.ext.declarative import declarative_base
    from sqlalchemy import inspect, ForeignKey


    #db = SQLAlchemy()

    Base = declarative_base()


    class Base(db.Model):
        __abstract__  = True
        id            = db.Column(db.Integer, primary_key=True)

    class Rawlog(Base):
        __tablename__ = 'rawlogs'

        id = db.Column(db.Integer, primary_key=True)
        one = db.Column(db.Integer)
        two = db.Column(db.Integer)
        three = db.Column(db.Integer)
        four = db.Column(db.Integer)


        def __init__(id, one, two, three, four):

            self.id = id
            self.one     = one
            self.two    = two 
            self.three    = three 
            self.four    = four 

        def toDict(self):
            return { c.key: getattr(self, c.key) for c in inspect(self).mapper.column_attrs }

我已在此处打开问题，但尚未回复

https://github.com/Pegase745/sqlalchemy-datatables/issues/114

我希望这里的任何人都能提供帮助。提前谢谢了。

[更新]

我试图按照给出的here的答案进行操作，似乎有所改变，这给了我错误

{"draw":"1","error":"int() argument must be a string or a number, not 'NoneType'","recordsFiltered":"108","recordsTotal":"108"}

sqlalchemy-datatables-list'对象没有属性'add_columns'

0 个答案: