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Wed, Jan 15 2014 4:48 AM | Permanent Link |
Mike | Thank you for the help!
The dataset (dataset1) is put on a separate form (called datamodule), unit datamodule is added to main and child form. On the main page is a grid which should be pointed to the dataset on the datamodule form. Tried this but frmDatamodule.dataset1 is not allowed. Shouldn't this work this way? |
Wed, Jan 15 2014 6:07 AM | Permanent Link |
Matthew Jones | I would expect it to work, but what is the error?
I presume the unit is included. Is the datamodule dataset public? Or perhaps it needs to be wired up at runtime if the IDE doesn't allow it to be connected. I don't know about this aspect of EWB. /Matthew Jones/ |
Wed, Jan 15 2014 12:27 PM | Permanent Link |
Tim Young [Elevate Software] Elevate Software, Inc. ![]() | Mike,
<< Is it not possible to save the fields to a dataset (defined at design time) via LocalStorage.Set(dsDocuments.DataSetName, dsDocuments.GetRows); and load them via dsDocuments.LoadRows(LocalStorage.Items[dsDocuments.DataSetName]); ? >> Yes, it's possible. That's exactly what the DataSetClient example demonstrates: procedure TDataSetForm.SaveDatabaseButtonClick(Sender: TObject); begin LocalStorage.Set(Biolife.DataSetName,Biolife.GetRows); LocalStorage.Set('Transactions',Database.GetTransactions); end; procedure TDataSetForm.LoadDatabaseButtonClick(Sender: TObject); begin if LocalStorage.Exists('Transactions') then Database.LoadTransactions(LocalStorage.Items['Transactions']) else ShowMessage('Transaction operations not found in local storage'); UpdateButtons; if LocalStorage.Exists(Biolife.DataSetName) then Biolife.LoadRows(LocalStorage.Items[Biolife.DataSetName]) else ShowMessage('Biolife dataset not found in local storage'); end; What *specific* problems are you seeing when you try to do the above ? Tim Young Elevate Software www.elevatesoft.com |
Wed, Jan 15 2014 12:29 PM | Permanent Link |
Tim Young [Elevate Software] Elevate Software, Inc. ![]() | Mike,
<< Is it always necessary to connect to a database when using a dataset? >> No, in fact the TDataSet never really knows where the JSON is coming from, and has no knowledge of the back-end database(s). << When I use the following code: >> Don't use the native HTML5 DOM objects, use the wrappers instead: http://www.elevatesoft.com/manual?action=viewcomp&id=ewb1&comp=TPersistentStorage Tim Young Elevate Software www.elevatesoft.com |
Wed, Jan 15 2014 3:10 PM | Permanent Link |
Mike | @Matthew
I got it working. After removing the grid and adding a new grid it could connect to the dataset. @Tim Thanks for the hint. I will try this. |
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