• Mayank Shau
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Hello,

I'm creating an Apex class that creates a Salesforce File record and associates it with a parent record. I'm having a problem creating the association (ContentDocumentLink) record.

Here is what I'm doing:
  • Create a ContentVersion record. This creates a ContentDocument record automatically if you leave the ContentVersion.ContentDocumentId field blank. (https://developer.salesforce.com/docs/atlas.en-us.api.meta/api/sforce_api_objects_contentdocument.htm - "To create a document, create a new version via the ContentVersion object without setting the ContentDocumentId. This automatically creates a parent document record.")
  • Insert ContentVersion record
  • DEBUG: Confirm ContentVersion.ContentDocumentId is set (Here is where the problem is because it is NULL; however if I SOQL query ContentVersion after the Apex completes, ContentVersion.ContentDocumentId is set and the corresponding ContentDocument record exists)
  • Create ContentDocumentLink record (commented out because it fails because ContentDocumentLink.ContentDocumentId is a required field)
  • Insert ContentDocumentLink record (commented out because it fails because ContentDocumentLink.ContentDocumentId is a required field)
Here is the code:
public class FileController {
    
    @AuraEnabled
    public static Id saveTheFile(Id parentId, String fileName, String base64Data, String contentType, Id contentDocumentId) { 
        base64Data = EncodingUtil.urlDecode(base64Data, 'UTF-8');
        
        ContentVersion cv = new ContentVersion();
        cv.ContentLocation = 'S';
        cv.ContentDocumentId = contentDocumentId;
        cv.VersionData = EncodingUtil.base64Decode(base64Data);
        cv.Title = fileName;
        cv.PathOnClient = filename;
        
        insert cv;
        
        //***This DEBUG statement must return an Id for the rest of the code to work***
        System.debug('contentDocumentId='+cv.ContentDocumentId);               
        
        //ContentDocumentLink cdl = new ContentDocumentLink();
        //cdl.ContentDocumentId = cv.ContentDocumentId;
        //cdl.LinkedEntityId = parentId;
        //cdl.ShareType = 'I';
        
        //insert cdl;
        
        return cv.Id;
    }

    @AuraEnabled
    public static Id saveTheFile(Id parentId, String fileName, String base64Data, String contentType) {         
        return saveTheFile(parentId, fileName, base64Data, contentType, NULL);
    }
}

Does anyone know what I'm doing wrong, not considering, etc?
Appreciate any thoughts and input!
What is meant by sandbox refresh time interval?
does it mean the time taken to complete the refresh from prod to test?