Query on File Size Limit

Hi there,

There's a small hack that allows you to access the temporary document uploaded and do validation on it. It involves having a "fake" SAIL component with the variable, please find below an example:

= with(
local!doc: todocument(55),
local!docSize: a!fileUploadField(
value: local!doc
).uploadedDocumentSize,
local!tempSize
)

You can use this local variable to perform validation as usual.
Hope that is useful.

#joanneh: Please try below code
a!fileUploadField(
label:"Document ",
value:ri!doc,
saveInto:ri!doc,
validations:if(isnull(ri!doc),{},{if((document(ri!doc,"size")/1024>1024),"validation message goes here","")})
)

@kdimitrov's suggestion is probably the way to go for this. I would like to expand on it and point out that, when the filesize is accessed this way, the result is actually a text value, and its context changes depending on the size, i.e. with different suffixes like "kb", "mb", etc. The best way to handle this, I believe, would be to write a separate function in an expression rule where the various possibilities are parsed and converted to an integer value of bytes, since then that can be easily compared to a constant, etc.

@mschmitt @venkateshs329 @kdimitrov,

Thank you for your help.

However, would there be anyway to make it applicable to files which are uploaded from user's own PC (i.e. files are not pre-exist in document Communities )?

Hi @joanneh - the a!fileUploadField () component (as mentioned in above comments) are used to upload files directly from the users own machine and doesn't require the document to present already on the Appian document Community.

Thanks, hope this helps !

@joanneh: to clarify, the trick mentioned at the top of the thread is specifically for validation of on-form uploaded files (just the example posted used an already-uploaded document ID for ease of demonstration). Much more info can be found in this older thread, too: /search?q=OriginalPostID-153370