Step 2: Defining the DAC for the Grid View of the Form
The Open Payment Summary (RS401000) form, which you have created in the previous
step, displays information about repair work orders (including the details of the
invoice created for each order). All fields on this form are unbound, and you do not
need to work with the fields on the Repair Work Orders (RS301000) form, which works
with the RSSVWorkOrder
DAC.
In this step, for the grid view of the Open Payment Summary form, you will derive the
new RSSVWorkOrderToPay
class from RSSVWorkOrder
and extend the new class with additional DAC fields that are specific to the inquiry
form. In the derived DAC, you will add the OrderNbr
,
InvoiceNbr
, and Status
abstract classes (which
are defined in the base RSSVWorkOrder
DAC) with the
new modifier. You need to define new abstract classes because
you will use the data fields of the derived class in BQL statements (such as the BQL
statements in the data view of a processing form and in attributes).
OrderNbr
, InvoiceNbr
, and
Status
fields will be referred to as the fields of the
RSSVWorkOrder
DAC). Data inconsistency issues may result when
the original and the derived DACs are used in the same BQL statement.In the derived DAC, you will also add the PercentPaid
field. During
the retrieval of each of the RSSVWorkOrder
records, the value of
the PercentPaid
field is calculated from the database as the
percentage of invoice amount that has been paid.
To define the RSSVWorkOrderToPay
DAC, do the following:
- In the Helper/Messages.cs file, add the
RSSVWorkOrderToPay
string to the Messages class as shown in the following code. This message will me used in the PXCacheName attribute for the new DAC.public const string RSSVWorkOrderToPay = "Repair Work Order to Pay";
- In the RSSVWorkOrder.cs file, declare the
RSSVWorkOrderToPay
DAC: Derive theRSSVWorkOrderToPay
class fromRSSVWorkOrder
, as shown in the following code.[PXCacheName(Messages.RSSVWorkOrderToPay)] public class RSSVWorkOrderToPay : RSSVWorkOrder { }
- In the
RSSVWorkOrderToPay
class, define theOrderNbr
,InvoiceNbr
, andStatus
abstract classes with thenew
modifier, as shown in the following code.#region InvoiceNbr public new abstract class invoiceNbr : PX.Data.BQL.BqlString.Field<invoiceNbr> { } #endregion #region Status public new abstract class status : PX.Data.BQL.BqlString.Field<status> { } #endregion #region OrderNbr public new abstract class orderNbr : PX.Data.BQL.BqlString.Field<orderNbr> { } #endregion
- In the
RSSVWorkOrderToPay
class, define thePercentPaid
field, as shown in the following code.#region PercentPaid [PXDecimal] [PXUIField(DisplayName = "Percent Paid")] public virtual Decimal? PercentPaid { get; set; } public abstract class percentPaid : PX.Data.BQL.BqlDecimal.Field<percentPaid> { } #endregion
- In the RSSVPaymentPlanInq.cs file, in the
RSSVPaymentPlanInq
graph, add the calculation of thePercentPaid
field value in the FieldSelecting event, as shown in the following code.protected virtual void _(Events.FieldSelecting<RSSVWorkOrderToPay, RSSVWorkOrderToPay.percentPaid> e) { if (e.Row == null) return; if (e.Row.OrderTotal == 0) return; RSSVWorkOrderToPay order = e.Row; var invoices = SelectFrom<ARInvoice>. Where<ARInvoice.refNbr.IsEqual<@P.AsString>>.View.Select( this, order.InvoiceNbr); if (invoices.Count == 0) return; ARInvoice first = invoices[0]; e.ReturnValue = (order.OrderTotal - first.CuryDocBal) / order.OrderTotal * 100; }
In the event handler, you are selecting the invoice with the same number as the one specified in the repair work order; you are then calculating the percentage.
You need to use an event handler instead of attributes because you cannot check for 0 values by using attributes.
Note:If you have generated theRSSVPaymentPlanInq
graph from the Code Editor, you can remove the Save and Cancel actions defined in the graph. - In the RSSVPaymentPlanInq.cs file, add the required
using
directives, which are shown in the following code.using PX.Data.BQL.Fluent; using PX.Data.BQL; using PX.Objects.AR;
- Build the project.