Hello friends,
It would be nice if you could provide an example on how to create a display method on form datasource in form extension.
Best regards,
Roberts
It is supported from PU29.
It’s a pity that you forgot to mention what problem you have.Let me guess…
If you don’t know how to write a display method, it should look like this:
display MyType myMethod(MyTable _myTable)
{
return ...;
}
If you aren’t familiar with extension classes, search for ExtensionOf attribute. In case of form data sources, it’s used in this way:
[ExtensionOf(formDataSource(MyForm, MyDataSource))]
final class MyClass_Extension
{
...
}
If you have another problem, it’s time to tell us what it is.
Hi Martin,
Usually I create display methods in table class extensions. However, at the moment I need to create it in form datasource. Can you explain what is the difference between two methods with some code example?
Best regards,
Roberts
Please look at the code example before. If you compare it with the method defined on table (that you usually use), you’ll notice the extra parameter.
Hi, Martin
Looks simple. I have added the toy method in my datasource and outside it. However when I try to find it in my form field properties datasource method list nothing apears.
[DataSource]
class AccountingSourceExplorerTmp
{
/// <summary>
///
/// </summary>
public display str displayPartyNumber(AccountingSourceExplorerTmp _AccountingSourceExplorerTmp)
{
//PriceDiscTableExt_DS.observe();
//PurchLine _purchline ;
//select firstonly PurchId from _purchline where _purchline.SubPriceDiscTableRefRecId ==_PriceDiscTableExt.RecId ;
return "222";
}
}
public display str displayPartyNumber(AccountingSourceExplorerTmp _AccountingSourceExplorerTmp)
{
//PriceDiscTableExt_DS.observe();
//PurchLine _purchline ;
//select firstonly PurchId from _purchline where _purchline.SubPriceDiscTableRefRecId ==_PriceDiscTableExt.RecId ;
return "222";
}
Best regards,
Roberts
Please show us your extension class.
[ExtensionOf(formStr(AccountingSourceExplorer))]
final class AccountingSourceExplorer_EBLSC_Extension
{
[DataSource]
class AccountingSourceExplorerTmp
{
/// <summary>
///
/// </summary>
public display str displayPartyNumber(AccountingSourceExplorerTmp _AccountingSourceExplorerTmp)
{
//PriceDiscTableExt_DS.observe();
//PurchLine _purchline ;
//select firstonly PurchId from _purchline where _purchline.SubPriceDiscTableRefRecId ==_PriceDiscTableExt.RecId ;
return "222";
}
}
public display str displayPartyNumber(AccountingSourceExplorerTmp _AccountingSourceExplorerTmp)
{
//PriceDiscTableExt_DS.observe();
//PurchLine _purchline ;
//select firstonly PurchId from _purchline where _purchline.SubPriceDiscTableRefRecId ==_PriceDiscTableExt.RecId ;
return "222";
}
}
Best regards,
Roberts
Your class is indeed wrong. Does it compile at all?
As I already said in my first reply, this is how you can create a data source extension:
[ExtensionOf(formDataSourceStr(MyForm, MyDataSource))]
final class MyClass_Extension
{
...
}