Salesforce Lightning: Custom clone case with a link to attachement

Question

I just created a lightning component + quick action to clone a case (It's working). But i want to link the attachement of the old case to the new one (I don't want to clone it). i tried with ContentDocumentLink but i can't retrieve the fields that i need. Any ideas?

I tried to do this :

Answer 1

With what I see in the image for the code snippet, you have a query as below:

[SELECT .... FROM ... WHERE LinkedEntityId = 'recordId'];

Seems, that is your issue where you are not able to retrieve the contents for that particular record as you have the text value in there instead of the Id expected.

Your query should instead look like as below where you will need to bind the recordId to be able to fetch the values.

[SELECT .... FROM ... WHERE LinkedEntityId = :recordId];

Answer 2

I just found how to do the Link without cloning the Files: (Actually my Id is in a string):

List<ContentDocumentLink> doc= [SELECT Id, LinkedEntityId, ContentDocumentId, Visibility, ShareType FROM ContentDocumentLink WHERE LinkedEntityId = 'recordId'];
 
       List<ContentDocumentLink> newDoc= new List<ContentDocumentLink>();
        if (doc.size() != 0){
            for(ContentDocumentLink c : doc){ 
                ContentDocumentLink contentlink=new ContentDocumentLink();
                contentlink.LinkedEntityId=clondedParentRecordID.Id;
                contentlink.ShareType= 'V';
                contentlink.ContentDocumentId=c.ContentDocumentId;
                newDoc.add(contentlink);
            }
        }
        if(newDoc.size()!=0)
        {
        insert newDoc;
        }  

We have to use the object DocumentContentLink that create a link between the Sobject and the Files (ContentDocument Object).