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For Salesforce Lightning Web Component File Upload and Preview Link, we can use lightning-file-upload to upload file and Lightning Navigation for Preview URL.
Blog Post:
https://www.infallibletechie.com/2024/01/salesforce-lightning-web-component-file-upload-and-preview-link.html
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0:10
hello everyone in this video we are
0:12
going to see in Salesforce lightning web
0:15
component how we can allow users to
0:17
upload an image and also once it is
0:21
uploaded how to get a preview
0:25
link for example here this is a
0:27
lightning web component I'm able to
0:30
select an
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image once it is
0:35
selected and once it is uploaded
0:37
successfully I'm able to select and
0:41
preview the
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image let's see how to achieve this
0:48
using lightning web
0:51
component in my lightning web component
0:54
HTML I have a lightning card inside the
0:58
lightning web card uh lightning card I
1:00
have a div and inside the div I have a
1:04
template this will be displayed only if
1:06
the value of file name is available so
1:09
once the uh users upload the image and
1:13
then uh once it is uploaded successfully
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then only the file name will be loaded
1:18
will be populated so that this
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particular block will be displayed so
1:23
that they can uh preview the image I'm
1:27
using anchor tag and I'm not using uh HF
1:31
attribute I'm directly using on click
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whenever this file name is clicked it
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will call this method called preview
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image and I'm using lightning file
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upload tag so that the users can upload
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the files label accept equal to accepted
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formats and record ID I'm passing the ID
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of the current uh object record uh I was
1:54
U demoing using account uh object so it
1:58
will uh store those uh files in the
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account uh account record once it is
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uploaded successfully it will call the
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method called handle upload
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finished I'm using navigation mixin in
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my
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JavaScript and um at API record ID so
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that it will get the current record ID
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so it will be account object ID uh file
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name variable I have declared St Str
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Content ID I have declared as an
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variable for the accepted formats I'm
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using JPEG and
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PNG whenever the file is uploaded
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successfully it will call handle upload
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finished I'm getting all the files since
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I'm not using multiple it will have only
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one file so I'm getting the first uh
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file that got uploaded so it will be
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just one file and using a console.log
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statement I'm just displaying what
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content is inside that inside that once
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it is uploaded successfully when the
3:01
file is successfully uh uploaded we will
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get document ID I'm storing that in St
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Str uh content doc ID variable and file
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name uh in order to get the file name
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I'm using the name attribute from the
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uploaded files value so the file name
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will be stored in file name variable
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whenever the users click preview image
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uh um uploaded image link it will call
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preview image method
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and using navigation. mixin um and uh
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since I'm using navigate it will
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directly navigate to that particular uh
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page so the type I'm using standard
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uncore named page in the attributes I'm
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using the page name as file preview in
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the state I am passing selected record
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ID value as St Str content doc ID so
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here we have to pass the content
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document ID value that that will be uh
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retrieved using the uploaded file
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document ID uh attribute
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value I'm using lightning record page as
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the target uh so that I can add that
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lightning web component uh on the
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lightning record
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page please check the video description
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in the video description I have shared
4:23
my blog post from the Block post you
4:25
should be able to get the sample
4:26
lightning web component code which was
4:28
referenced in this video
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I hope it was
4:44
helpful thank you for
4:58
watching
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