How to Check File Format From Upload File in Lightning Component + Salesforce
SFDC Panther
Amit Singh aka @sfdcpanther, a Salesforce Technical Architect, Consultant with over 7 years of experience in Salesforce engineering. 19x Certified. Blogger, Speaker, and Instructor.
- Posted on Dec 22, 2020
- in Lightning, Lightning Web Components, Salesforce
How to develop custom File Uploader using Lightning Spider web Component?
Hi #Ohana,
In this web log post, nosotros will talk almost how to develop a custom file Upload using Lightning Web Component.
We will create a Component that will upload the file under the file object instead of Attachment. The reason we are doing, Salesforce is deprecating the attachments.
We volition use FileReader class of JavaScript to read the File and then send that to Salesforce.
Nosotros take designed the component which volition sit inside the record page just if you desire to use at different place then make the adjustment accordingly.
The main purpose of this component is to provide the ability to upload the Files even if you exercise not know the tape Id and the record Id volition be generated at run fourth dimension.
Step 1 – Create the Apex Class
Step 2 – Create Lightning Web component
Get the code from the below file
Thanks for reading 🙂 #DeveloperGeeks #SalesforceDeveloper #SfdcPanther #AskPanther
Please do like share subscribe the SFDCPanther YouTube Channel.
COMMUNITY Advantage
Recent POSTS
Proceed IN Bear on
Source: https://sfdcpanther.com/custom-file-uploader-using-lightning-web-component/
25 thoughts on "How to develop custom File Uploader using Lightning Web Component?"
Anonymous
This component would work for Invitee user ?
Hi,
I have not tried this just you might demand to brand some tweaks to make it work for guest users.
Rahul
Howdy
can you delight tell me how nosotros change Upload files text to Attached file in lightning input type='file'
thanks in adv.
That is something which is provided past Salesforce. If you wanted to change that you can try to exercise a hack using CSS. I have not tried this and so I volition non be able to provide you the code but you can try it.
Hello SFDC Panther. Astonishing tutorial, it really helped me a lot!
Still I have ane question. My requirement was to create a possibility for a user to upload upwardly to 9MB file size. I've googled it a bit and find out that I needed async telephone call for it (I used @time to come) on appendToFile method.
All the same it doesn't upload whole document. So if a certificate is 8.5 MB, it will in one case upload vii.five, and second fourth dimension maybe 8.one … you get the point. Do you know why this is happening and maybe you lot can requite me some workaround on it?
Cheers in advance and continue up the proficient work 🙂
Howdy Dame,
These are the Limitations of the JavaScript to upload the file which has Max Size Limit.
Ashish
Hi SFDC Panther,
I have a query for file upload office. If we are using file upload in a form, File is going to get uploaded earlier the form gets saved. Suppose, if the user changes mind to not click on submit and clicks clear, is in that location whatsoever way we can delete the form ?
Whatsoever help will exist much appreciated. Thanks in Advance
Are y'all able to elaborate more on your query, what you are trying to do?
Arpit Gupta
Tin I have this code on my email, I am in hurry and demand to fix one functionality asap, Cheers in advance, Ane query I have a requirement to upload file upto 2GB which is saleaforce limit, will it exist possible by this?
Hullo,
Are you having whatever problems while using the code as the code is already there in the blog mail service?
And using this approach you can non upload more than 10MB file.
Arpit Gupta
Hi Sir,
Its there in the Web log but I am not able to Copy it, also I need to upload the file upto 2GB(not 10 MB) and also I have to send information technology to apex(using chunking), Can you aid me with any code snippet or weblog.
Regards:
Arpit
The code is hosted in GitHub and to get the code yous need to click on the View Raw push to come across the lawmaking and use information technology. To upload the college file of 2GB ( starting time thing if yous will do your browser will exist frozen after 30-40 MB size ). And if still desire to upload then you take a Lighting-file upload standard lightning component which you tin utilize.
Nitin Shinde
How-do-you-do,
I have used this code for site user, earlier information technology worked. Now started giving no rows for assignment error .
message: "List has no rows for assignment to SObject"
stackTrace: "Class.FileUploadService.saveFiles: line 32, column ane\nClass.FileUploadService.saveTheChunkFile: line eight, column ane"
I debugged and checked that Content version id is created however query is returning null.
Regards,
Nitin
Please bank check your query and also the admission level of the files that you are trying to admission.
Is it possible to update the linked entity after save?
I have a checkbox I would like to update on the linked record?
I know this is probably a really simple affair to exercise merely very new to Apex development.
K
Yeah, you tin update.As you already take the recordId for the Parent Tape you can update it.
Bearding
Neat work, I have one concern though, if the file size crosses 6MB wouldn't we see heapsize limit? Instead we can accept a VF folio embedded within the component and update the versiondata using post
Yes. With a large file size, information technology will create a problem.You can give your version a try
Shivukumar
Hello SFDC Panther,
I take created a LWC to upload file using Lightning file uploader, when we try to download or preview information technology, and downloaded file is not opening.
Could y'all delight help me to figure out what might be wrong
It volition be more helpful for me as I am new to salesforce.
if yous I tin can provide y'all my lawmaking
Any help will be much appreciated
Thanks in advance
Information technology'southward not possible for me to review the code every bit I have other things to do. However if you accept large size files so it volition not be displayed in the previewed. When are you downloading the file make certain it is using right extension to save.
AP
How-do-you-do Amit
Could you lot please requite insights near the file size and clamper size. I'm unable to observe salesforce document which can help to empathise why chunksize is chosen as 750 kb.
The file chunk is not related to Salesforce information technology is related to JavaScript. We are uploading the file in chunks every bit uploading the file at once is not supported.
Shubham
This was helpful thankyou very much!
Prince Jain
Can yous provide exam class of this code
Yous accept to develop the class