Question
Capgemini
MX
Last activity: 26 Oct 2022 3:43 EDT
How to "concatenate" two page lists?
I have two multiselect, each one with the same data of a page list, when I go to the next stage the data of the second multiselect must be concatenated with the first, and be displayed in the section, that is, multiselect1 = multiselect1 + multiselect2 at the moment to advance to the next stage. I have a Data Transform in the flow that leads to the next stage, but I'm not sure how to set it up.
Updated: 25 Oct 2022 16:12 EDT
Ordina
NL
@EdgarIvanV If you want to keep the original lists you could append the original lists to a new pagelist, if data integrity is not an issue you could use a post processing data transform that uses MultiSelect1 as a target instead.
Alternatively, use the Page-Merge-Into method in an activity or check out the PropertyListMerge function that can be used in a data transform aswell.
Capgemini
MX
@BasG0629 Hi, thanks for the answer.
In fact, if I want to keep the original lists, but would rather not have to make a third pagelist, but rather preserve the pages from the first pagelist, and add the pages from the second pagelist to it.
Updated: 26 Oct 2022 2:38 EDT
Ordina
NL
@EdgarIvanV If the pages from the first pagelist need to be preserved you could order the list so that the first items in the concatenated list are always at the beginning. You could also leverage pagelist polymorphism if the classes of the page list differ:
- Refer to a page list of class Data-Fruit
- Runtime results can show objects of classes Data-Fruit-Apple, Data-Fruit-Banana, etc (discussed here https://academy.pega.com/topic/greenfield-data-modeling/v2)
There is also the option to create a data page that contains the concatenated list so that the concatenated list is only a reference (that you could later save if needed) and this isn't stored in the BLOB of the case as embedded data.