Workflow input as activity input

[mberthillot-flowwa]

Feature Request

Problem Overview

Good day everybody ! While using Elsa, we've been trying to use a workflow input (of any type) as an activity input but failed to achieve this through the editor. Are available : Default, JS, C# and Variables.

Proposed Solution

We propose to add workflow inputs in available options within the activity inputs. Workflow inputs will then be selectable from the dropdown like the variables already are.

Use Cases

Any workflow logic where context is provided through a workflow input. It would be very handy to have his workflow input available for use to ensure that the activities are aware of this context. (eg : for which company this workflow instance is run, especially if this workflow is triggered from external software).

Impact of Feature

The impact is expected to be very low in UI and in code. The only point of this feature is to make workflow inputs available in activity input menu and to ensure that their value are correctly injected and kept throughout the workflow execution.

[hhuanwang]

When using workflow inputs within a ​foreach​ loop, they can only be consumed ​once. In contrast, variables used in a ​foreach​ loop can be consumed ​repeatedly.

[hhuanwang]

This design restriction is likely the reason why workflow inputs are not allowed to be used directly within activities—ensuring each input value is processed only once during loop execution.

[mberthillot-flowwa]

Hello @hhuanwang, thank you for your feedback and sorry for the late reply. I have not looked thoroughly into the code after your comment but I'm not sure to understand why input values cannot be processed as many times as required during a workflow run if variables can. What would happen if they do ? We'll try to have some additional tests regarding this.