Is it possible to output multiple document links with a!documentDownloadLink, wi

As I was thinking on a similar strategy, I was able to get this working today by wrapping the Rich Text field in an applyComponents() call, and utilizing a few helper functions. This rule will now take in a single folder ID and display all documents in one line with a nice text separator - should be great for entity backed records with attachment folder IDs stored in the DB. Essentially the expressions create arrays of documents and names, insert null values every other slot then iterate through creating either a rich text component of documentDownloadLink (where a document exists), or the text separator " | " where there is no document. I use a helper array there since null document values are a hassle, but this can probably be simplified. The rule also allows optional parameters for singleLine (display), recursiveSearch, noDocDisplayMessage and separatorText.

load(
local!singleLine: if(isnull(ri!singleLine),true(),ri!singleLine),
local!recursiveSearch: if(isnull(ri!recursiveSearch),false(),ri!recursiveSearch),
local!separatorText: if(isnull(ri!separatorText)," | ",ri!separatorText),
local!noDocFoundMessage: if(isnull(ri!noDocFoundMessage),"No documents found",ri!noDocFoundMessage),
local!docs: getdocumentsfromfolder(ri!folderId,local!recursiveSearch),
local!noDocs: or(isnull(local!docs),length(local!docs)=0),
local!docNames: if(local!noDocs,null,apply(fn!document,local!docs,"name")),
local!docs2: if(local!noDocs,null,rdrop(
split(
joinarray(
apply(
rule!docDisplay_Insert,
local!docs,
2,
0
),
","
),
","
),
1
)
),
local!docNames2: if(local!noDocs,null,rdrop(
split(
joinarray(
apply(
rule!docDisplay_Insert,
local!docNames,
2,
0
),
","
),
","
),
1
)
),
local!which: if(local!noDocs,null,rdrop(
split(
joinarray(
apply(
rule!docDisplay_Insert,
{
rule!CreateArrayFromSingleValue(1,length(local!docNames))
},
2,
0
),
","
),
","
),
1
)
),

if(local!noDocs,
a!richTextDisplayField(
value: a!richTextItem(
text: local!noDocFoundMessage/*,
style: "STRONG"*/
)
),

if(not(local!singleLine),
a!linkField(
links: apply(
a!documentDownloadLink,
merge(
local!docs,
local!docNames
)
)
),
a!richTextDisplayField(
value: a!applyComponents(
function: rule!docRichTextComponents(
docName: _,
doc: _,
which: _,
separatorText: _
),
array: merge(
local!docNames2,
local!docs2,
local!which,
rule!CreateArrayFromSingleValue(local!separatorText,length(docs2))
)
)
)
)
)
)

Helper function rule!docRichTextComponents:

if(
ri!which = 0,
a!richTextItem(
text: ri!separatorText
),
a!richTextItem(
text: ri!docName,
link: a!documentDownloadLink(ri!doc,ri!docName)
)
)

Helper function rule!docDisplay_Insert:

=insert(ri!array,ri!value,ri!insertAt)

Helper function rule!createArrayFromSingleValue

=split(ri!SingleValue & rept("(*)"&ri!SingleValue,max(0,ri!DesiredLength-1)),"(*)")

As I was thinking on a similar strategy, I was able to get this working today by wrapping the Rich Text field in an applyComponents() call, and utilizing a few helper functions. This rule will now take in a single folder ID and display all documents in one line with a nice text separator - should be great for entity backed records with attachment folder IDs stored in the DB. Essentially the expressions create arrays of documents and names, insert null values every other slot then iterate through creating either a rich text component of documentDownloadLink (where a document exists), or the text separator " | " where there is no document. I use a helper array there since null document values are a hassle, but this can probably be simplified. The rule also allows optional parameters for singleLine (display), recursiveSearch, noDocDisplayMessage and separatorText.

load(
local!singleLine: if(isnull(ri!singleLine),true(),ri!singleLine),
local!recursiveSearch: if(isnull(ri!recursiveSearch),false(),ri!recursiveSearch),
local!separatorText: if(isnull(ri!separatorText)," | ",ri!separatorText),
local!noDocFoundMessage: if(isnull(ri!noDocFoundMessage),"No documents found",ri!noDocFoundMessage),
local!docs: getdocumentsfromfolder(ri!folderId,local!recursiveSearch),
local!noDocs: or(isnull(local!docs),length(local!docs)=0),
local!docNames: if(local!noDocs,null,apply(fn!document,local!docs,"name")),
local!docs2: if(local!noDocs,null,rdrop(
split(
joinarray(
apply(
rule!docDisplay_Insert,
local!docs,
2,
0
),
","
),
","
),
1
)
),
local!docNames2: if(local!noDocs,null,rdrop(
split(
joinarray(
apply(
rule!docDisplay_Insert,
local!docNames,
2,
0
),
","
),
","
),
1
)
),
local!which: if(local!noDocs,null,rdrop(
split(
joinarray(
apply(
rule!docDisplay_Insert,
{
rule!CreateArrayFromSingleValue(1,length(local!docNames))
},
2,
0
),
","
),
","
),
1
)
),

if(local!noDocs,
a!richTextDisplayField(
value: a!richTextItem(
text: local!noDocFoundMessage/*,
style: "STRONG"*/
)
),

if(not(local!singleLine),
a!linkField(
links: apply(
a!documentDownloadLink,
merge(
local!docs,
local!docNames
)
)
),
a!richTextDisplayField(
value: a!applyComponents(
function: rule!docRichTextComponents(
docName: _,
doc: _,
which: _,
separatorText: _
),
array: merge(
local!docNames2,
local!docs2,
local!which,
rule!CreateArrayFromSingleValue(local!separatorText,length(docs2))
)
)
)
)
)
)

Helper function rule!docRichTextComponents:

if(
ri!which = 0,
a!richTextItem(
text: ri!separatorText
),
a!richTextItem(
text: ri!docName,
link: a!documentDownloadLink(ri!doc,ri!docName)
)
)

Helper function rule!docDisplay_Insert:

=insert(ri!array,ri!value,ri!insertAt)

Helper function rule!createArrayFromSingleValue

=split(ri!SingleValue & rept("(*)"&ri!SingleValue,max(0,ri!DesiredLength-1)),"(*)")