multi dropdown in a grid

RE: multi dropdown in a grid

anushas0002 — Thu, 21 Jun 2018 09:41:58 GMT

service is fine and showing the dropdown and values in another form correctly where there is no editable grid and just form with multidropdown. It is not working inside EditableGrid.

RE: multi dropdown in a grid

anushas0002 — Thu, 21 Jun 2018 09:41:16 GMT

Tried this and throws different error on Name field:

Could not display interface. Please check definition and inputs.
Interface Definition: Expression evaluation error at function a!forEach [line 48]: Error in a!forEach() expression during iteration 4: Expression evaluation error at function a!multipleDropdownField [line 69]: Invalid index: Cannot index property 'Name' of type Text into null value of type Technologies?list

RE: multi dropdown in a grid

dipaki — Thu, 21 Jun 2018 09:37:57 GMT

Hi @anushas0002 , try the below code. If you select a name the entire Technology CDT for that name will be selected. And all your selected names(Technologies CDT) will be saved into list of Technologies CDT.

a!multipleDropdownField(
label: "",
choiceLabels: fv!item.Technologies.Name,
choiceValues: fv!item.Technologies,
value: fv!item.Technologies,
saveInto: fv!item.Technologies
)

RE: multi dropdown in a grid

paragk998 — Thu, 21 Jun 2018 09:37:39 GMT

Are you getting data from service ?
because Appian do not support multiple to multiple

you can try
comment code and pass rows as rows:{}
take another textField(label:debug, value: local!sources ) to display local!sources value in your interface.

then check loacal!sources value and share it.

RE: multi dropdown in a grid

anushas0002 — Thu, 21 Jun 2018 09:25:10 GMT

There are two tables sources and technologies with many to many relationship. Therefore, Each Source has more than one technologies in this grid which needs to be shown as preselected values. sample data is below but its lengthy. Please refer to the above another screenshot which shows error message on Editable Grid when tried to click on "Add New Source(s)" link and it is same error when I try to change the preselected values in multi dropdown.

Sources
Id: 2
DisplayName: "Artificial Intelligence"
FullName: "Artificial Intelligence"
Description: "Artificial Intelligence"
Technologies: List of Technologies: 2 items
Technologies
Id: 18
Name: "Quantum Computing"
Definition: null (Text)
Description: null (Text)
YearsToImpact: 10
ScaleOfImpact: "High"
AnalystReports: null (Text)
AssetsAndAccelerators: null (Text)
Standards: null (Text)
Enablers: null (Text)
UserCases: null (List of UseCases)
RisksAndControls: null (List of RisksOrControls)
CaseStudies: null (Text)
GlobalCapabilities: null (List of Capabilities)
Industry: null (Text)
Vendor: null (Text)
TeamSize: null (Number (Integer))
OpportunityRating: 5
RiskRating: 4
Source: List of Sources: 1 item
null (Sources)
Images: List of Images: 2 items
Images
Id: 4
Title: "QC_1"
Label: "Flagships, Connected Enterprise, AI, Machine Learning, Cryptography, Encrytion, Pattern Matching"
DocumentId: 17064
ContentUrl: null (Text)
Industry: null (Text)
Source: null (Sources)
Images
Id: 5
Title: "QC_2"
Label: "Flagships, Connected Enterprise, AI, Machine Learning, Cryptography, Encrytion, Pattern Matching"
DocumentId: 17065
ContentUrl: null (Text)
Industry: null (Text)
Source: null (Sources)

RE: multi dropdown in a grid

paragk998 — Thu, 21 Jun 2018 09:22:45 GMT

could you share value of local!sources ?

RE: multi dropdown in a grid

anushas0002 — Thu, 21 Jun 2018 09:20:05 GMT

unfortunately it didn't work still. Please see the below screenshot may be it helps understand the issue better.

RE: multi dropdown in a grid

anushas0002 — Thu, 21 Jun 2018 09:11:43 GMT

Yes, index is added because the multi drop down is in an editable grid. Without that index it will throw another error saying: Only fields with scalar types can be indexed from an array.

RE: multi dropdown in a grid

paragk998 — Thu, 21 Jun 2018 09:11:02 GMT

this error displays because
local!sources[fv!item].Technologies value is null

you can use
index(local!sources[fv!item].Technologies,"Id","") instead local!sources[fv!item].Technologies.Id

try commenting dropdown field
and then display value of local!sources in any test field
you will be able to find issue

if you can share value of local!sources that will be helpful to understand the issue

RE: multi dropdown in a grid

anushas0002 — Thu, 21 Jun 2018 09:01:25 GMT

Scenario:

Display Preselected multiple values in multi drop down coming from Database. Allow user to change these values and save in DB which is when the below error is coming. It is also coming when I am trying to add new record in Editable Grid at same field.

Error Message:

Could not display interface. Please check definition and inputs.
Interface Definition: Expression evaluation error at function a!forEach [line 49]: Error in a!forEach() expression during iteration 4: Expression evaluation error at function a!multipleDropdownField [line 74]: Invalid index: Cannot index property 'Id' of type Text into null value of type Technologies?list

RE: multi dropdown in a grid

Jasmin — Thu, 21 Jun 2018 07:49:56 GMT

We are not able to see your error message properly , could you please resend it and one more thing, Is your choice labels and values are holding multiple data to show in multiple drop down , as per code it shows particular index data.

RE: multi dropdown in a grid

paragk998 — Thu, 21 Jun 2018 07:27:59 GMT

as per your code I think you are trying to save Technologies.Name associated with selected Technologies.Id.

to do so

don't use second loop since you are saving at index,

a!save(local!sources[fv!index].Technologies, local!sources[fv!index].Technologies.Name)

or you can use apply function

a!save(

local!sources.Technologies,

apply(displayvalue(

local!sources[fv!item].Technologies.Id,

local!sources[fv!item].Technologies.Name,

null

),save!value

)

RE: multi dropdown in a grid

Aditya — Thu, 21 Jun 2018 06:34:52 GMT

The error message image you posted is not readable. However,in the code of your drop down field,

value: { local!sources[fv!index].Technologies.Id }, // this line will throw an error when local!sources[fv!index].Technologies.Id is null or empty.
should be
value: local!sources[fv!index].Technologies.Id, // correct line.

RE: multi dropdown in a grid

Venkatesh Suram — Thu, 21 Jun 2018 03:28:17 GMT

anushas0002 : Can you please provide an Error Message , We are not able to see exact error text in attached image.

Thanks!!