Lookup Filtering on x++

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Posted on by YCeren

I am a beginner at d365 finance and operations. I have service and sub-service lookup fields in a form. This field's data sources have a one-to-many relationship with a foreign key. When I select a record in the service field, I want to see only sub-services that belong to the selected 'service' record in the 'sub-services lookup field. I need a lookup filtering for this with X but I do not know-how. I would be really appreciated it if someone can help me with this.

Here is my code but I really confused all the tables and fields name and I probably write the wrong names in the wrong places.

//My main form that includes lookup fields is inventSite

// Control names of lookup fields are InvenSite_ServiceRefRecId and InventSite_SubServiceRefRecId

//The name of the form that includes service and subservice records is Service

// the table that includes subservice records is SubService

Here is my Service form;

6663.Screen-Shot-2021_2D00_05_2D00_22-at-15.07.15.png

And here is my code;

[FormControlEventHandler(formControlStr(InventSite, InventSite_SubServiceRefRecId), FormControlEventType::Lookup)]
   public static void InventSite_SubServiceRefRecId_OnLookup(FormControl sender, FormControlEventArgs e)
   {
       SysReferenceTableLookup sysRefTableLookup;
       Query query = new Query();
       QueryBuildDataSource qbds;

       FormRun formRun;
       FormControl formCtrl;
       ServiceName serviceName;
       FormControlCancelableSuperEventArgs ce = e as FormControlCancelableSuperEventArgs;

       sysRefTableLookup = SysReferenceTableLookup::newParameters(tableNum(Service), sender);
       qbds = query.addDataSource(tableNum(Service));
       formRun = sender.formRun();

        
       formCtrl = formRun.design().controlName(formControlStr(InventSite, InventSite_SubServiceRefRecId));
       serviceName = formCtrl.valueStr();

       qbds.firstOnly(true);
       qbds.addRange(fieldNum(Service, ServiceName)).value(queryValue(serviceName));

       sysRefTableLookup.parmQuery(query);
       sysRefTableLookup.addLookupfield(fieldNum(Service, ServiceName));
       sysRefTableLookup.addLookupfield(fieldNum(Service, ServiceDescription));
        
       sysRefTableLookup.performFormLookup();

       ce.CancelSuperCall();
   }

Thank you. Best Regards..

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Martin Dráb 237,878 Most Valuable Professional on at

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You said that you want filtered subservice, but you're selecting Service records. That sounds wrong to me.

Also, I suspect that ServiceName field doesn't actually contain RecIds. Selecting just the first record doesn't look correct either.

I think you want something like this:

[FormControlEventHandler(formControlStr(InventSite, InventSite_SubServiceRefRecId), FormControlEventType::Lookup)] public static void InventSite_SubServiceRefRecId_OnLookup(FormControl sender, FormControlEventArgs e) { SysReferenceTableLookup tableLookup = SysReferenceTableLookup::newParameters(tableNum(Service), sender); Query query = new Query(); QueryBuildDataSource subServiceDs = query.addDataSource(tableNum(SubService)); InventSite inventSite = sender.dataSource().cursor(); qbds.addRange(fieldNum(SubService, ServiceRecId)).value(queryValue(inventSite.ServiceRecId)); tableLookup.parmQuery(query); tableLookup.addLookupField(fieldNum(SubService, OneField)); tableLookup.addLookupField(fieldNum(SubService, AnotherField)); tableLookup.performFormLookup(); FormControlCancelableSuperEventArgs ce = e as FormControlCancelableSuperEventArgs; ce.CancelSuperCall(); }

You'll need to update field names to match your actual situation.

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YCeren 65 on at

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Thank you very much for your answer and help I organized the code but It 'Failed to execute query because no root data source on the form matches the root datasource on the query.' I really need this is to work. I added SubService table to form datasource Why I keep getting this error?

[FormControlEventHandler(formControlStr(InventSite, InventSite_SubServiceRefRecId), FormControlEventType::Lookup)] public static void InventSite_SubServiceRefRecId_OnLookup(FormControl sender, FormControlEventArgs e) { SysReferenceTableLookup tableLookup = SysReferenceTableLookup::newParameters(tableNum(Service), sender); Service_WM Service; FormRun formRun = sender.formRun(); FormControl formCtrl; Query query = new Query(); QueryBuildDataSource qbds = query.addDataSource(tableNum(SubService)); InventSite inventSite = sender.formRun().dataSource("InventSite").cursor(); qbds.addRange(fieldNum(SubService, RecId)).value(queryValue(inventSite.ServiceRefRecId)); tableLookup.parmQuery(query); tableLookup.addLookupField(fieldNum(SubService, SubServiceName)); tableLookup.addLookupField(fieldNum(SubService, SubServiceDesc)); tableLookup.performFormLookup(); FormControlCancelableSuperEventArgs ce = e as FormControlCancelableSuperEventArgs; ce.CancelSuperCall(); }

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Martin Dráb 237,878 Most Valuable Professional on at

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Which line of code is throwing the error? I think the problem is that SysReferenceTableLookup::newParameters() still refers to Service, not SubService (if I'm right that you want to use SubService instead of Service, which you didn't confirm).

By the way, please never hard-code any object names (such as "InventSite") if you can avoid it. I think that my approach (sender.dataSource().cursor()) is easier, but if you have to find a datasource by name, use formDataSourceStr(). These methods validate that the object exists and they also allow finding the usage through cross-references.

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YCeren 65 on at

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Yes, you were right. I noticed that mistake and fixed it. it is working. Thank you very much for your help. Much appreciated.

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