Referencing grid field values

[bill.currier]

I am new to development with Alpha Software products, so please bear with me. I realize this is probably a very simple question.

I have successfully created a grid based on a connection to an SQL table. I want to be able to reference the values of fields in the current record shown in the live or working preview so I can fire off an insert query (for a different table) based on them.

I have searched all of the online resources I can find but I cannot seem to figure out how to reference these fields. I'd love to be able to test my code from an interactive window too, but that, of course, depends on properly referencing the fields and their values.

In summary then, how do I reference fields in a grid in my code and from the interactive window? Or where can I learn how to do this?

[-Jinx-]

Re: Referencing grid field values

If you are talking about referencing them in your server side events (or an ajax callback), they will be in the "e" object. Place a debug(1) in your server side event (or xbasic function in the case of an ajax callback) and you can explore the variables there. If you are using a grid that isn't editable and an ajax callback you will need to check the option to "compute current row data"; but I digress.

The notes inside of the different server-side events and the ajax callback function prototype will tell you where to look for the field data but most likely it will be something like this which is taken from the function prototype notes:

'In addition, the 'e' object contains:
'e._currentRowDataOld - (only if the grid is editable) - original value in the current row before field was edited.
'	examples:  e._currentRowDataOld.lastname, e._currentRowDataOld.firstname
'e._currentRowDataNew as p - current field values in the current row.
'	examples:	e._currentRowDataNew.lastname, e._currentRowDataNew.firstname
'e._currentRowKeys - an array containing primary key field values for the current row
'	example: If the primary key for the table that the grid is based on is 'Lastname' and 'Firstname',
'	e._currentRowKeys[1] will contain the value for 'Lastname' and e._currentRowKeys[2] will contain the value for 'Firstname'

If you want to access them with javascript you should just go to your button/field's event (onclick or whatever you are using) and open it for editing. Inside you can select text mode and then click on "insert a grid method" which is a blue hyperlink near the bottom left. You can explore the different functions available there and their usage notes. Generally, you'd be looking at the getValue method which is described like this inside the example:

//Read value in 'LASTNAME' field from the Grid part, row 4. Note that field name must be uppercase.
var lname = {grid.object}.getValue('G','LASTNAME',4);
//read value in 'LASTNAME' field from the Grid part, 'current row'. 
//Note that field name must be uppercase.
var lname = {grid.object}.getValue('G','LASTNAME',{grid.rowNumber});

Note that {grid.rowNumber} cannot be used in client-side Javascript or Global Javascript functions. 
Instead, you must use the {grid.Object}.getSelectedRow() method of the Grid object to get the current row. For example: 
var rn={grid.Object}.getSelectedRow();
var lname = {grid.object}.getValue('G','LASTNAME',rn);

//Read value in 'LASTNAME' field in the Search part.
var lname = {grid.object}._getValue('S','LASTNAME');
//read value in 'LASTNAME' field in the Detail View part.
var lname = {grid.object}._getValue('D','LASTNAME');
//Getting value of 'range' fields in the Search part. You can't use .getValue(). You have to use low level Javascript.
var val1 = $('{grid.componentname}.S.STARTDATE').value;
var val2 = $('{grid.componentname}.S._TO.STARTDATE').value;

So, the first example is server-side using Xbasic
The second example is client-side using Javascript.

[bill.currier]

Re: Referencing grid field values

Jinx, thank you! Your answer was exactly what I need to solve my issue. The debug(1) command gave me the exact object names. ~Bill

[mixter]

Re: Referencing grid field values

Great reference thanks Jinx

One more tip for anyone else reading this...

(and I am using A5v12)


For client side events, you can use {Grid.RowNumber}
and in fact I found it worked
better than {grid.Object}.getSelectedRow()


The reason is the order of events...

If you need to reference the current row number in an OnClick event,
the OnClick event triggers first, before the grid realises a new row was selected


To give a real example

Insert a button in a grid row

Put some javascript in the OnClick event of the button.
Go to text mode and enter

var rownum={grid.Object}.getSelectedRow();
alert('Row = ' + rownum);

Preview the grid and click the button a few times on different rows.

What you will notice is:

- The alert box always shows row 1 as the first click, regardless of which row you click on

- for subsequent clicks, the alert will show you the previous row you clicked on, not the current one.


So it seems the correct way to get the current row number for an OnClick event is use {Grid.RowNumber}

This works as expected, returning the current row number of the button you are clicking

var rownum={Grid.RowNumber};
alert('Row = ' + rownum);

[Catalin]

Re: Referencing grid field values

Hi Michael,
Almost you answered to my question http://msgboard.alphasoftware.com/al...getSelectedRow

But how can I do this on onDialogInitialize event:

e.javascript = <<%txt%
var po = {grid.object}.getParentObject();
if (po)
{
//var rn=po.getSelectedRow(); //this works
var rn = {grid.RowNumber}; //this not works
var IdPlanAchizitii = po.getValue('G','IDPLANACHIZITII',rn);
{dialog.Object}.setValue('IDPLANACHIZITII',IdPlanAchizitii,false);
}
else alert('not po');
%txt%

Bill, sorry for pollute you thread.

[mixter]

Re: Referencing grid field values

Hi Catalin,

Maybe it's where you are setting reference to your PO object

I think you need to replace {grid.object}.getParentObject()
with {dialog.object}.getParentObject()

i.e.

replace

var po = {grid.object}.getParentObject();

with

var po = {dialog.object}.getParentObject();

I am guessing this, because you are using onDialogInitialize event, so this current code is running in a Dialog (even though the parent is a grid, and the PO object reference will be to the parent grid)

[mixter]

Re: Referencing grid field values

Also to be extra sure everything runs way you expect

in your parent grid, in the Action Javascript "Open a UX Component" properties

You might want to set "Use cached UX Component" to False (checkbox off).

And now the OnDialogInitialize event will trigger every single time the popup UX is opened.