[SalesForce] Set required field value in lightning-file-upload

In lightning-file-upload component in LWC, I am trying to set one required custom picklist field value on the content version.
For this, I have used the below code:

 <lightning-file-upload accept={acceptedFormats} 
                               label="Attach sites"                                   
                               onuploadfinished={handleUploadFinished} 
                               record-id={recordId}
                               file-field-name="Custom_field__c"
                               file-field-value={fieldValue}></lightning-file-upload>

Here I have set file-field-name and file-field-value values, but when the file is uploaded, I get the option to select the field value and after selecting the value(on click of Next), the file gets uploaded.

If I make this field not required, then the file gets uploaded without selecting any option.
I am not using a guest user.

Documentation referred: https://developer.salesforce.com/docs/component-library/bundle/lightning-file-upload/documentation

Best Answer

usage of file-field-name and file-field-value attributes in lightning-file-upload

To enable guest users to upload files to a record, the org admin can create a custom field on the ContentVersion object. The field type can be text or picklist. The API name of the custom field must end with fileupload__c. For example, you can use the API name Guest_Record_fileupload__c for the custom field.

Specify the file-field-name and file-field-value attributes in lightning-file-upload to store a value in the custom field in the ContentVersion object. For example, set file-field-name to Guest_Record_fileupload__c. Set file-field-value to a value that can be used in Apex to associate the file to the record.

Coming to your case

You have defined both the record-id and file-field-name and file-field-value attributes in the lightning-file-upload.

You can omit the record-id attribute when specifying file-field-name and file-field-value attributes. However, if you provide the record-id, file-field-name and file-field-value attributes, the record ID is ignored if the uploading user is a guest user.

Note that if you do not provide the record-id or file-field-name and file-field-value attributes, the uploaded file is private to an authenticated user.

To make field required, You have these options:-

You can mark field as required
Write a trigger on ContentVersion object to throw an error if field is blank
Create a validation rule to throw an error if field is blank

Related Solutions

[SalesForce] File read issue in file upload Lightning Web Component

You are having issue with case sensitivity of name attribute in alert( event.detail.files[0].Name);

uploadfinished

The event fired when files are uploaded successfully.The uploadfinished event returns the following parameter.

PARAMETER TYPE DESCRIPTION files object The list of files that are uploaded.

event.detail.files returns a list of uploaded files with the attributes name and documentId.

name: The file name in the format filename.extension, for example, account.jpg.
documentId: The ContentDocument Id in the format 069XXXXXXXXXXXX.

If you pay attention to Your code, you have used Capital N in name attribute whereas expected is small as JavaScript is case sensitive.

alert(uploadedFiles[0].name); // it will work fine

[SalesForce] Is it possible to upload files as a guest user in a community

I did a quick test and it is indeed possible to upload a file using guest user in a community. Below are further details on your specific questions.

Is it possible to upload files as a guest user in a community?

Yes.

Or does this checkbox/setting only work with the aura component file:upload?

The Org setting is applicable for LWC as well.

Could I be missing some permissions?

As you have confirmed that the Guest User Profile has access to Case object, BUT see below

Any other ideas of what is going wrong?

This is most likely your issue here. The profile permissions enable the CRUD access to Case object. But you will still need to ensure that the Case record being accessed which is defined in record-id is shared with the Guest User at least as Read Only. Unless the Guest User has access to that record, the file upload won't be successful.