Send data from Delphi to web client

[radub]

Hello,

We have IW 14.2 along with XE5.
Our html contains DataTables plugin.
Tu supply data to DataTables we're trying to use a Delphi function but we don't know how to make the function to return this data to the DataTables js function.
We cannot find a way to register either a callback real function (not a procedure), or to pass out/var parameter(s) from the procedure.

Any help, example, demo will be much appreciated!

Thank you

[kudzu]

FWIW, DataTables is in the soon plans for 17.

For 14, you can use REST. But its probably easier just to embed your data in the DOM:
https://datatables.net/examples/data_sources/dom.html

There are several ways to do this, but it could be as simple as using an IWLabel with RawText (not best option, but quick)

[radub]

Thank you for the answer.
For the time beeing we'll wiat for v17.

[kudzu]

17 is still a ways out, but within months we will have usable betas and are already deploying basic apps online today.

[Jose Nilton Pace]

Hello,

We have IW 14.2 along with XE5.
Our html contains DataTables plugin.
Tu supply data to DataTables we're trying to use a Delphi function but we don't know how to make the function to return this data to the DataTables js function.
We cannot find a way to register either a callback real function (not a procedure), or to pass out/var parameter(s) from the procedure.

Any help, example, demo will be much appreciated!

Thank you

Hi, You can use an IWTemplateProcessor wich have a Event called OnUnknowTag to full data to use in DataTable.
Other way is put a IWLabel and set Properties RawText := True; Full data to iwlabel and use in DataTable.
Other way is OnFormRender add a var with data like Self.JavaScript.Add( 'var myData = xyz'); and use myData on DataTable.

I don't use DataTable ok. Is ideas to test and adapt to your case.

[kev13in]

^^ Can you share the screenshot on how to?

[Jose Nilton Pace]

PHP Code:

;procedure TIWForm1.IWAppFormRender(Sender: TObject);
begin
   Self.JavaScript.Add( 'var w_v_l = ["2018/01","2018/02"]' );
end; 


HTML/JavaScript

PHP Code:

var config_v = {
    type: 'line',
    labels: w_v_l  <=== 


IWTemplateProcessorHTML

PHP Code:

procedure TIWForm1.IWTemplateProcessorHTMLUnknownTag(const AName: string; var VValue: string);
begin
   //AName in your HTML {%myDataTableData%}
   if AName = 'myDataTableData' then
      VValue := 'record, record2, record3, etc';
end; 


[radub]

Thank you for the solutions.
Finally I've manage to create a file and pass its path to the DataTables which happily show the data.