Bsrgvty

I have this condition that displays my file contentsize in B KB MB and GB but i'm thinking of adding a scale so it doesnt show a large number .Any ideas of how can i achieve that in my front lightning component ? . my formula looks like this :

<aura:iteration items="!v.InboxList" var="inbox" end='5'> 

<li class="slds-item" > ! inbox.ContentSize lt 1024 ? inbox.ContentSize +' B' : and(inbox.ContentSize ge 1024,inbox.ContentSize lt (1024*1024)) ? (inbox.ContentSize / (1024*1024)) +' KB' : and(inbox.ContentSize ge (1024*1024), inbox.ContentSize lt (1024*1024*1024))? (inbox.ContentSize / (1024*1024)) + ' MB' : (inbox.ContentSize /(1024*1024*1024))+' GB' </li>
</aura:iteration>

You'll want to do this in your JavaScript controller. Lightning expressions are relatively limited compared to Visualforce's expression evaluation. The code might look something like this:

var files = []; // this is your variable with the content records
files.forEach(file => 
 if(file.ContentSize < 2**10) 
 file.ContentSizeHumanReadable = file.ContentSize + ' bytes';
 else if(file.ContentSize < 2**20) 
 file.ContentSizeHumanReadable = Math.floor((file.ContentSize/2**10)*1e3)/1e3) + ' KB';
 else if(file.ContentSize < 2**30) 
 file.ContentSizeHumanReadable = Math.floor((file.ContentSize/2**20)*1e3)/1e3) + ' MB';
 else if(file.ContentSize < 2**40) 
 file.ContentSizeHumanReadable = Math.floor((file.ContentSize/2**30)*1e3)/1e3) + ' GB';
 else 
 file.ContentSizeHumanReadable = Math.floor((file.ContentSize/2**40)*1e3)/1e3) + ' TB';
 
);

This should produce outputs like:

• 1.234 KB


• 2.951 MB


• 100.001 GB

...and so on.

I have some Aura Components that make use of the big.js JavaScript library to handle this sort of problem. That library offers similar capability to the Apex Decimal class, but working at the client-side e.g.:

var s = Big(v).round(Big.DP).toFixed(Big.DP);