Generate download link when clicking on button

RE: Generate download link when clicking on button

Mike Schmitt — Tue, 05 Dec 2023 17:51:05 GMT

thanks for confirming - if you're willing, please hit 'verify answer' (etc) when you get a chance.

RE: Generate download link when clicking on button

manjit.1486 — Tue, 05 Dec 2023 17:44:49 GMT

Awesome, thank you.
I was able to achieve the result. Thanks for the help

RE: Generate download link when clicking on button

Mike Schmitt — Mon, 04 Dec 2023 21:48:57 GMT

This is all you need. The "label" parameter in document download link is irrelevant when used in a rich text item, which just uses the value you place in the "text" parameter. I've removed everything irrelevant here and fixed the aforementioned "double-negative" error.

a!richTextDisplayField(
  value: a!richTextItem(
    text: "Dowload Document",
    showWhen: a!isNotNullOrEmpty(local!docId),
    link: a!documentDownloadLink(
      document: local!docId
    )
  )
)

If you want to go slightly fancier you can make use of the super flexible nature of being able to stack multiple a!richTextItem() elements inside one Rich Text Field, and add one that shows up specifically as a placeholder while the Doc ID is still blank:

a!richTextDisplayField(
  value: {
    a!richTextItem(
      text: "Dowload Document",
      showWhen: a!isNotNullOrEmpty(local!docId),
      link: a!documentDownloadLink(
        document: local!docId
      )
    ),
    
    /* show a special placeholder while local!docId is still blank: */
    a!richTextItem(
      showWhen: a!isNullOrEmpty(local!docId),
      text: "(No Document)"
    )
  }
)

RE: Generate download link when clicking on button

Mike Schmitt — Mon, 04 Dec 2023 21:33:42 GMT

You have a double negative here:

Essentially this is saying to show the rich text item only when local!docId IS empty.

You should be familiar with a!isNullOrEmpty() and its opposite, a!isNotNullOrEmpty() - you would use one or the other of these, but you should never really need to wrap either, especially the latter, in the not() function like you've done here.

RE: Generate download link when clicking on button

manjit.1486 — Mon, 04 Dec 2023 20:47:57 GMT

Yeah.. let me check

RE: Generate download link when clicking on button

Stefan Helzle — Mon, 04 Dec 2023 20:47:22 GMT

You need to check the value of local!docId.

This should not be much of a challenge for a senior developer !?!?!?

RE: Generate download link when clicking on button

manjit.1486 — Mon, 04 Dec 2023 20:45:29 GMT

      a!richTextDisplayField(
        value: a!richTextItem(
          text:"Dowload Document",
          link: a!documentDownloadLink(
            label: document(
              documentId: if(a!isNotNullOrEmpty(local!docId),null(),local!docId),
              property: "name"
            ),
            document: if(a!isNotNullOrEmpty(local!docId),null(),local!docId)
          ),
          showWhen: not(a!isNotNullOrEmpty(local!docId))
          )
        ),

Could not display interface. Please check definition and inputs. Interface Definition: Expression evaluation error at function 'document' [line 949]: The passed parameter(s) are of the wrong type. Received the type Text.

RE: Generate download link when clicking on button

Stefan Helzle — Mon, 04 Dec 2023 20:41:53 GMT

That depends on what this GLB_isBlank is doing. Why not use a!isNotNullOrEmpty()?

RE: Generate download link when clicking on button

manjit.1486 — Mon, 04 Dec 2023 20:40:05 GMT

I really don't know what's happening.

      a!richTextDisplayField(
        value: a!richTextItem(
          text:"Dowload Document",
          link: a!documentDownloadLink(
            label: document(
              documentId: if(rule!GLB_isBlank(local!docId),null(),local!docId),
              property: "name"
            ),
            document: if(rule!GLB_isBlank(local!docId),null(),local!docId)
          ),
          showWhen: not(rule!GLB_isBlank(local!docId))
          )
        ),

RE: Generate download link when clicking on button

Stefan Helzle — Mon, 04 Dec 2023 20:33:52 GMT

You should display that link only if the document is not null.

RE: Generate download link when clicking on button

manjit.1486 — Mon, 04 Dec 2023 20:16:58 GMT

I got it. I used this a!richTextDisplayField(). But still why it's giving me an errror.
Could not display interface. Please check definition and inputs. Interface Definition: Expression evaluation error at function 'document' [line 949]: Document Does Not Exist or has been Deleted

RE: Generate download link when clicking on button

Mike Schmitt — Mon, 04 Dec 2023 20:11:00 GMT

Make sure you account for the fact that the Doc ID will be blank at first. It will be easier if you use a!richTextDisplayField() (i recommend nobody EVER use a!linkField() at this point, it is essentially deprecated by the existence of the Rich Text field) - the benefit here is you can either hide the field entirely and/or disable the link while the local variable containing the document ID is still blank.

RE: Generate download link when clicking on button

manjit.1486 — Mon, 04 Dec 2023 20:05:54 GMT

Thanks for the information. I am following the above highlighted snippet. But when I used that local variable in documentdownload link. It gives an error.

a!buttonArrayLayout(
buttons: {
a!buttonWidget_23r3(
label: "Generate File",
value: cons!IPA_VAL_DATA,
saveInto: {
ri!buttonValue,
a!save(
ri!assign.preparedby,
local!loggedInUser
),
a!startProcess(
processModel: cons!IPA_DATA_PROCESS_MODEL,
processParameters: {
employee:ri!employee,
address:ri!address,
tax:ri!tax,
assigne:ri!assigne
buttonValue:ri!buttonValue
},
 onSuccess: {
                a!save(local!docId,fv!processInfo.pv.docId),
                )
              },
              onError: a!save(
                local!errorMessage,
                "Error Exporting File to Excel"
              )
)
},

submit: false(),
validate: false(),
style: "SECONDARY",

)
},
align: "START",
marginAbove: "STANDARD"
),
  a!linkField(
            label: "Download document",
            labelPosition: "ABOVE",
            links: {
              a!documentDownloadLink(
                label: document(
                  documentId: local!docId,
                  property: "name"
                ),
                document: local!docId
              )
            }
          )

Could not display interface. Please check definition and inputs. Interface Definition: Expression evaluation error at function 'document' [line 945]: The passed parameter(s) are of the wrong type. Received the type Text.

What I am missing? I tried change the type - still gets an error.
pv.docId is integer type.

RE: Generate download link when clicking on button

Mike Schmitt — Mon, 04 Dec 2023 19:25:33 GMT

You need to read the details in the rule description for a!startProcess - granted it's not SUPER well explained at a surface level, but it's also not that hard. The highlighted snippet is what you're missing in the above iteration:

RE: Generate download link when clicking on button

manjit.1486 — Mon, 04 Dec 2023 19:19:04 GMT

a!buttonArrayLayout(
buttons: {
a!buttonWidget_23r3(
label: "Generate File",
value: cons!IPA_VAL_DATA,
saveInto: {
ri!buttonValue,
a!save(
ri!assign.preparedby,
local!loggedInUser
),
a!startProcess(
processModel: cons!IPA_DATA_PROCESS_MODEL,
processParameters: {
employee:ri!employee,
address:ri!address,
tax:ri!tax,
assigne:ri!assigne
buttonValue:ri!buttonValue
},
 onSuccess: {
                a!save(local!docId,fv!processInfo),
                )
              },
              onError: a!save(
                local!errorMessage,
                "Error Exporting File to Excel"
              )
)
},

submit: false(),
validate: false(),
style: "SECONDARY",

)
},
align: "START",
marginAbove: "STANDARD"
),

RE: Generate download link when clicking on button

Stefan Helzle — Mon, 04 Dec 2023 19:11:40 GMT

Why do you try to put a HTTP response into a button? That will not do anything.

What Mike tried to explain, is that you need to store the ID of the generated document from the process into a local variable. Then show a link component to allow the user to download the file.

RE: Generate download link when clicking on button

manjit.1486 — Mon, 04 Dec 2023 18:57:50 GMT

a!buttonArrayLayout(
buttons: {
a!buttonWidget_23r3(
label: "Generate File",
value: cons!IPA_VAL_DATA,
saveInto: {
ri!buttonValue,
a!save(
ri!assign.preparedby,
local!loggedInUser
),
a!startProcess(
processModel: cons!IPA_DATA_PROCESS_MODEL,
processParameters: {
employee:ri!employee,
address:ri!address,
tax:ri!tax,
assigne:ri!assigne
buttonValue:ri!buttonValue
},
onSuccess: {
                      a!httpResponse(
                        statusCode: 200,
                        headers: {
                          a!httpHeader(
                            name: "Content-Type",
                            value: "application/json"
                          )
                        },
                        body: fv!processInfo
                      )
                    }
)
},

submit: false(),
validate: false(),
style: "SECONDARY",

)
},
align: "START",
marginAbove: "STANDARD"
),

Can you check?

RE: Generate download link when clicking on button

Mike Schmitt — Mon, 04 Dec 2023 18:52:13 GMT

pleeeeeeease use "insert code" for code of... any length
you would need to add the "onSuccess" parameter within your a!startProcess call in order to call the generated document ID back into your interface (just store in a local variable, etc).

RE: Generate download link when clicking on button

manjit.1486 — Mon, 04 Dec 2023 18:49:35 GMT

below is the code: Please verify:

a!buttonArrayLayout(
buttons: {
a!buttonWidget_23r3(
label: "Generate File",
value: cons!IPA_VAL_DATA,
saveInto: {
ri!buttonValue,
a!save(
ri!assign.preparedby,
local!loggedInUser
),
a!startProcess(
processModel: cons!IPA_DATA_PROCESS_MODEL,
processParameters: {
employee:ri!employee,
address:ri!address,
tax:ri!tax,
assigne:ri!assigne
buttonValue:ri!buttonValue
}
)
},

submit: false(),
validate: false(),
style: "SECONDARY",

)
},
align: "START",
marginAbove: "STANDARD"
),

RE: Generate download link when clicking on button

Mike Schmitt — Mon, 04 Dec 2023 18:45:06 GMT

[quote userid="251250" url="~/discussions/f/user-interface/30798/generate-download-link-when-clicking-on-button/122688"]startprocess link[/quote]

You wouldn't use a!startProcessLink() for this. You'd use a!StartProcess(), run the process with chaining enabled, and pass the generated document Id back into your interface.

RE: Generate download link when clicking on button

manjit.1486 — Mon, 04 Dec 2023 18:06:51 GMT

I am using rich text and startprocess link. Want to generate a file document link.

RE: Generate download link when clicking on button

Konduru Chaitanya — Sat, 02 Dec 2023 12:28:38 GMT

Hello manjit.1486,

Does this button trigger a Start process? If so I would recommend you to use a Record/Related actions to perform this and try using a User Input task where the user has a summary of what kind of document and what data is there and so on, add a document download link using a!documentDownloadLink() pass your generated document as the value here.

I guess this would help and this is what you were asking for. If not please ignore.