Add new file_input block kit element soon to be introduced.

[filmaj]

Summary

In preparation for next week's launch of the new Block Kit File Input element.

[hello-ashleyintech]

🚀

[WilliamBergamin]

LGTM but should we include the parameter for file extensions?

[henrymingwu]

FYI let's hold off on this until 11/13 at least? Context: delayed our GA by a couple of days: https://slack-pde.slack.com/archives/C0539UD5E6M/p1699467241515679?thread_ts=1699461506.812299&cid=C0539UD5E6M

[filmaj]

@WilliamBergamin what do you mean by the following?

should we include the parameter for file extensions?

[WilliamBergamin]

@filmaj there is a parameter that allows the developer to restrict the file type being sent from the user I think it is allowed_filetypes_group: "ALL", but I don't think we currently support this field in the parameter definition

The JSON looks like this

{
        title: "Enter a file",
        name: "image-123",
        type: Schema.types.array,
        maxItems: 1,
        description: "",
        items: {
          type: Schema.slack.types.file_id,
          allowed_filetypes_group: "ALL"
        },
      }

@henrymingwu was this feature intended for developers

[filmaj]

@WilliamBergamin I believe the code snippet you shared is for OpenForm fields in the automation platform. However, the interface is a bit different for the File Input block element; see the reference doc for it here: https://api.slack.com/reference/block-kit/block-elements#file_input

[WilliamBergamin]

Ohh completely missed filetypes field