multipleDropdownField selection issue

Question

Hi, 
 I have a multipleDropdownField with the attached code. 
 I am getting an error when I try to select any additional item from the dropdown. 
 Can someone give me an idea how to fix the issue. Thanks in advance.

Using the below code while Testing the user interface.

rule input: 
 lcmIntakeDesignatedBusinesses:

Sanchit Gupta (Xebia) · Accepted Answer

Try this: 
 a!localVariables(
 local!dbkeysFromRi: ri!lcmIntakeDesignatedBusinesses.dbkey,
 local!designatedBusiness: {
 'type!{urn:com:appian:types:LCM}LCM_DesignatedBusinesses'(dbkey: 1, dbname: "Test-1"),
 'type!{urn:com:appian:types:LCM}LCM_DesignatedBusinesses'(dbkey: 2, dbname: "Test-2"),
 'type!{urn:com:appian:types:LCM}LCM_DesignatedBusinesses'(dbkey: 3, dbname: "Test-3"),
 'type!{urn:com:appian:types:LCM}LCM_DesignatedBusinesses'(dbkey: 4, dbname: "Test-4")
 },
 local!selectedDesignatedBusinesses: if(
 a!isNullOrEmpty(ri!lcmIntakeDesignatedBusinesses),
 null(),
 ri!lcmIntakeDesignatedBusinesses.dbkey
 ),
 local!addItems: difference(
 local!selectedDesignatedBusinesses,
 local!dbkeysFromRi
 ),
 local!removeItems: wherecontains(
 difference(
 local!dbkeysFromRi,
 local!selectedDesignatedBusinesses
 ),
 ri!lcmIntakeDesignatedBusinesses.dbkey
 ),
 a!formLayout(
 label: "Form",
 contents: {
 a!sectionLayout(
 contents: {
 a!multipleDropdownField(
 label: "Designated Business/Function",
 labelPosition: "ABOVE",
 helpTooltip: "Designated Business/Function",
 placeholder: "Select a Designated Business/Function",
 choiceLabels: index(local!designatedBusiness, "dbname", ""),
 choiceValues: index(local!designatedBusiness, "dbkey", ""),
 value: local!selectedDesignatedBusinesses,
 saveInto: local!selectedDesignatedBusinesses,
 required: true
 )
 }
 ),
 
 },
 buttons: a!buttonLayout(
 primaryButtons: {
 a!buttonWidget(
 label: "Submit",
 submit: true,
 style: "PRIMARY",
 saveInto: {
 a!forEach(
 local!addItems,
 a!save(
 ri!lcmIntakeDesignatedBusinesses,
 append(
 ri!lcmIntakeDesignatedBusinesses,
 'type!{urn:com:appian:types:LCM}LCM_IntakeDesignatedBusiness'(
 intakedesignatedbusinesskey: null,
 intakeheaderkey: null,
 dbkey: fv!item
 )
 )
 )
 ),
 a!save(
 ri!lcmIntakeDesignatedBusinesses,
 remove(
 ri!lcmIntakeDesignatedBusinesses,
 local!removeItems
 )
 )
 }
 )
 },
 secondaryButtons: {
 a!buttonWidget(
 label: "Cancel",
 value: true,
 saveInto: ri!cancel,
 submit: true,
 style: "NORMAL",
 validate: false
 )
 }
 )
 )
) 
 I have saved the desired values (addition/removal) in the rule input on Submit button saveInto

Mike Schmitt · Answer

I agree with Sanchit's suggestion above. The key thing your original code was missing was that you were treating "local!selectedDesignatedBusinesses" both as an array of your "db key" IDs, but then also trying to use it as if it were an array of dictionary containing your "db key" element itself. The main fix involved accounting for this disparity.

multipleDropdownField selection issue

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