PowerApps SubmitForm 到另一个数据源答案

【问题标题】：PowerApps SubmitForm to another datasourcePowerApps SubmitForm 到另一个数据源
【发布时间】：2018-12-06 17:36:52
【问题描述】：

我正在尝试实现 Outlook 等离线功能。如果离线，它应该将 EditForm1 中的值放置到本地集合（发件箱）。是否可以根据 Connection.Connected 变量将编辑表单提交给不同的来源？然后，我将创建一个计时器，在每 x 秒连接时提交它的返回。

【问题讨论】：

标签： powerapps

【解决方案1】：

如果我理解正确，您希望将 EditForm1 中的当前内容保存到本地集合中，并在再次收到互联网连接后，您希望再次提交表单。

如果您已连接到互联网，您将需要使用条件来保存表单中当前存在的数据，否则将其收集到临时集合中。

If(ToggleIsConnected.Value,
    //If you are connected to the internet, then write the data to the database.
    SubmitForm(Form1),

    //If you are NOT connected to the internet, then write the data to a temporary collection to be written later.
    Collect(temporary,
        {id: Max(temporary,id)+1,
            column1: InputColumn1.Text,
            column2: InputColumn2.Text
        }
    );
    SaveData(temporary,"temporary")
)

您可以使用切换来检查互联网连接。如果您失去连接、在本地保存数据并重新连接，切换将触发并自动执行 OnCheck 操作：

If(!IsEmpty(temporary),
    // If the connection returns and there are records to be written, 
    // then perform these actions:
    ForAll(temporary,
        // For each of the records in the temporary collection, 
        // save their data to a new row in the connected datasource.

        // If writing was successful, copy it to a collection called 'success' 
        // to identify it.
        Collect(success,
            {id: id,
                Record:                     
                    Patch(datasource,Defaults(datasource),
                        {column1: column1,
                            column2: column2
                        }
                    )
            }
        )
    );

    If(IsEmpty(Errors(datasource)),
        // If there are no errors with the datasource, 
        // go ahead and clear the entire temporary collection since you're writing.
        Clear(temporary),

        // Otherwise if there is an error, remove only the records that were successful. 
        // Then clear the successful records.
        // Keep records that had an error so they could be attempted later.
        Remove(temporary,Filter(temporary,id exactin Filter(success,!IsBlank(Record)).id));
        Clear(success)
    )
)

请注意，这里我使用 Patch() 来保存临时集合中的内容。除非我填写表单，否则我无法使用 SubmitForm。

要进一步实现这一点，还需要执行更多步骤。请查看我关于此主题的视频以获取更详细的详细信息： https://www.youtube.com/watch?v=j30xOM5OmRE

【讨论】：