FormLetter Framework

The formletter framework in Microsoft Dynamics AX is used when posting documents for sales or purchase orders. The framework has been refactored in Microsoft Dynamics AX 2012 to provide better support for customizations, extensibility, and performance.

If you have to create new custom field in Purchase order and required

flow it to all table as FormLetter work. Follow these steps.

Create new field let say 'Remarks' in following tables.

1. PurchTable
2. VendInvoiceInfoTable
3. VendInvoiceJour
4. PurchParmTable

Add an assignment for your new field in  VendInvoiceJour Table Method 'initFromPurchTable'

this.Remarks                = PurchTable.Remarks;

Now create abstract class in AXVendDocumentTableMap class

public abstract Name parmRemarks(Name _remarks = '')

{

}

After this you will need to create two method in VendDocumentTableType classs

As shown below.

protected Name determineDefaultRemarks()

{

    Name remarks;

    remarks = this.purchTable().Remarks;

    return remarks;

}

protected void defaultRemarks()

{

    Name remarks;

    ;

    if (!this.axVendDocumentTableMap().isTableFieldSet(fieldnum(VendDocumentTableMap, Remarks)))

    {

        remarks = this.determineDefaultRemarks();

        this.axVendDocumentTableMap().parmRemarks(remarks);

    }

}

Now register new field in 'VendDocumentTableMap' TableMap  and create its mapping in PurchParmTable and VendInvoiceInfoTable.

Finally add an assignment in PurchFormLetterParmData class as shown below.

parmTable.Remarks= localPurchTable.Remarks;