Given an object and field (API names), use the Apex and Test classes within a flow to be able to parse the active valid values for the picklist field.
This allows us, within flows, to be able to add these valid values to picklist choice sets within Salesforce Flows. There is currently an issue in Salesforce Flows where certain objects cannot be queried for their picklists to be used in choice sets. Once of these objects is the Knowledge__kav object (see screenshot).
As mentioned above, when trying to query a picklist or multi-picklist field for a choice set within a flow, you may be met with this error. Using Apex allows us to avoid errors such as these
By moving this task over to Apex, we do the following:
- Query all valid values from the object and field in question
- Those values are returned to an Apex-defined variable type called
FlowMapClass
- Maps, as defined in Apex, are at this point not allowed to be used in Flows. By using a custom variable similar to Maps, we can theoretically store a key-value pair for the picklist API name and picklist label values if we wanted
- The
FlowMapClassvariable included in this repo contains analtValueparameter where a single record can bekey-value-altValue
- After returning a collection of
FlowMapClassvalues, we can then use this within a picklist choice set, and not be barred by Flow limitations
