CoC on Form init

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Posted on by Voltes

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Hi guys,

If in original form, there is a method Init() which is using element.args().dataset(), can we use the same in CoC of this form ?

Take example in the original form, the method init() has this code :

 public void init()
{
        LedgerJournalTable  ledgerJournalTableCheck;
        LedgerJournalTrans  ledgerJournalTransCheck;
    
        switch (element.args().dataset())
        {
            case tableNum(SalesLine):
                salesLine SalesLineItemReq = salesLine::findRecId(element.args().record().RecId);
                if (SalesLineItemReq.SalesType == SalesType::ItemReq)
                {
                    curTransactionType = SubBillDeferralTransactionType::ItemReq;
                }
                else
                {
                    curTransactionType = SubBillDeferralTransactionType::SalesOrder;
                }
    
                curSourceRecType = SubBillDeferralSourceRecType::SalesLine;
                break;
        }
        
}

I want to create CoC for this method init(), and still want to check whether the caller record is SalesLine

So I'm creating my CoC like this :

[ExtensionOf(formStr(SubBillDeferralTransactionDeferral))]
final class My_SubBillDeferralTransactionDeferralForm_Extension
{
    
    public void init()
    {
        next init();
        if (element.args().dataset() == tableNum(SalesLine))
        {
            
        }
    }


}

But I have errors saying "element not declared", What is the correct way of doing it ?

Thanks,

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Suggested answer

GirishS 27,827 Moderator on at

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Hi Lars Volt,

Don't use element for form extension. Instead use "this" keyword.

Thanks,

Girish S.

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Mohit Rampal 12,565 Moderator on at

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element is used for formRun within a form. In form extension class keyword 'this' should be used.

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Voltes 596 on at

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Thanks,

In the same method, if I want to refer or get FormRun object, can I use this :

FormRun formRun = this as FormRun;

because next I want to have the datasource. From some resource I learn is something like this :

FormDataSource SubBillDeferralTransactionLineDeferral_DS=formRun.datasource(FormDatasourceStr(SubBillDeferralTransactionDeferral,SubBillDeferralTransactionLineDeferral));

but when debug, the 1st statement already give me null.

Thanks,

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GirishS 27,827 Moderator on at

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You can directly use this keyword.

FormDataSource SubBillDeferralTransactionLineDeferral_DS = this.dataSource(formDatasourcestr(SubBillDeferralTransactionDeferral,SubBillDeferralTransactionLineDeferral));

Please try that and see if it works.

Thanks,

Girish S.

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Mohit Rampal 12,565 Moderator on at

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Try adding below code

FormDataSource SubBillDeferralTransactionLineDeferral_DS=this.datasource(FormDatasourceStr(SubBillDeferralTransactionDeferral,SubBillDeferralTransactionLineDeferral));

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GirishS 27,827 Moderator on at

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You can get DataSource buffer in the init method. But you won't get current record in the init method. As it will be too early to get the current DataSource record in the init method.

Thanks,

Girish S.

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Voltes 596 on at

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Hi both,

Thanks for such prompt response. I genuinely thought it is correct, but turns out the variable DS is null when I debug

Here is the code now:

[ExtensionOf(formStr(SubBillDeferralTransactionDeferral))] final class MY_SubBillDeferralTransactionDeferralForm_Extension { public void init() { FormDataSource SubBillDeferralTransactionLineDeferral_DS = this.dataSource(FormDatasourceStr(SubBillDeferralTransactionDeferral,SubBillDeferralTransactionLineDeferral)); SubBillDeferralTransactionLineDeferral SubBillDeferralTransactionLineDeferral = SubBillDeferralTransactionLineDeferral_DS.Cursor(); FormControl.deferred = this.design().ControlName(FormControlStr(SubBillDeferralTransactionDeferral, SubBillDeferralDeferred)); next init(); SubBillDeferralTransactionLineDeferral.SubBillDeferralDeferred = NoYes::Yes; } }

This form is called from Sales Order, by click button Deferrals on Line Action Pane. Will it make the code different ?

My intention is, inside this form (which gonna pop up after click that button), there is check box Deferred which I need to turn it ON (checked).

Thanks,

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Voltes 596 on at

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Yes, speaking of which, I even not yet put the condition if it is relate to SalesLine, like the original Init method :)

Noted I need to use keyword "this" instead "element", will try after the current issue solved.

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Verified answer

GirishS 27,827 Moderator on at

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If you want to set default value to the field, you can try initValue method instead of init method.

In that case you need to write extension of form DataSource init method.

Thanks,

Girish S.

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Mohit Rampal 12,565 Moderator on at

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Try adding same code on init method of form datasource which has Deferred field instead of init method of form.

dynamics365musings.com/.../

There's still chances that code will not work because standard code is enabling/disabling this fields based on some conditions. In that case you need to find where its disabling it like check enableFields method. You might need to extend that method as well.

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