Change global variable in SAP MDK

[Ladidudidadacat]

Hey,

is there a possibilty to change the a global variant in a rule or something? 🙂

I saw that it is possible to get the Value:
https://answers.sap.com/questions/13043998/globals-variable-in-a-rule-mdk.html

Kind Regards
Fabian

[Jitendra_Kansal]

thunfrosta

Could you share some additional details what exactly you are trying to do?

[Ladidudidadacat]

Hey Jitenda,
I have one page with an analytic cards collections. When i click one field i move to another "detail page". In the Object Header of the "Detail page" i show some Info´s to this specific value. This is working fine. I set no target and service and therefore it grabs only the selected row.
But below this i want to have a new analytic cards collection with a different service but with the selected value in the $filter section of the query. Therefore i somehow need to save the specific element from the clicked object. I already have a rule which gets me this value but the rule is only working in the header section and not for the analytic cards collection:

export default function GetPicturePath(context) {
const binding = context.getBindingObject().value123.toString(); console.log(binding.value123.toString())
return binding.value123.toString();
}

I would guess that "context" is referencing to the Compound from where i start the rule.
So this is what i want:
Start Page
Analytic Card Collection
- Click one card (e.g Country="USA)" of the collection
--> NavToDetail
Detail Page
Object Header

Analytic Card Collection

- In the Object Header it is showing me some value: Citizens, President, etc.
-In the Analytic card collection i will show the states. Therefore i have another service. I will now use this service and will select only where "County="USA"

My Rule is here only working in the Object HEader but not for the analytic card collection. Thats why i thought i can save the value to a global variable when i run the rule in the Object Header and then use it later in the query filteroptions.
Bill Froelich mentioned ClientData. I will try this and see if this will solve my challenge.

I hope that this was helpful for you 🙂

Kind Regards
Fabian

[Ladidudidadacat]

Sorry, made a mistake. Here the corrected rule:

export default function GetPicturePath(context) {
const binding = context.getBindingObject();
return binding.value123.toString();
}

[bill_froelich · Accepted solution]

Fabian,

Globals in MDK are really constants. You cannot change the value of a global at runtime. If you need to store something into a "global" at runtime you can use ClientData if it doesn't need to persist between launches or ApplicationSettings if you need it to persist. If you are using Application Settings please be sure to cleanup your values on logout.

--Bill

[Ladidudidadacat · Accepted solution]

Hey Bill,
thanks for your reply. I described my case in the comments of my first post. Do you think ClientData will solve my challenge? 🙂
--Fabian

[Ladidudidadacat]

Hello Bill and Jitendra,

i solved it. I just read all answer from Bill on the Community related to SAP MDK. Bill really explains everything quite easy and good 🙂 I found the correct commands.

Bill, you rock!!! 🙂

--Fabian