[SalesForce] How to download content file data through lightning/visualforce

I am using content files to drive documentation about products in a lightning community.

I've researched the ContentDocument and ContentVersion documentation but I am unable to figure how to get either the base64 value of the document, or the direct download url. Pasting the URL in the browser renders XML that says invalid session.

On ContentVersion there is a VersionData field that says its the base64 value of the content, but querying for it only returns a URL.

I've also followed this tutorial on displaying content files on a visual force page but, but it just takes you to the record page and not the document.

Has someone implemented something similar?

Best Answer

The direct download link for the file is of the form: sfBaseUrl + /sfc/servlet.shepherd/version/download/ + ContentVersionId

The query editor shows the URL for VersionData but in Apex it is the correct type.

Related Solutions

[SalesForce] Isn’t ContentVersion ‘VersionData’ Updateable (Amendable)

As you mention ContentVersion is not updatable (versions are explicitly immutable, a feature of the content product), you would have to stage the blob somewhere else (perhaps an attachment) until its complete, then create the contentVersion record.

[SalesForce] Problem with VF contentType and content-disposition causing IE8+ not to execute a downloaded file

Using a contentType of "application/x-unknown" and specifying the desired filename via setting the Content-Disposition header in the controller was key to making this work.

The working solution was the following code:

Controller

public with sharing class SAPGUILauncher {

    public SAPGUILauncher() {
        Apexpages.currentPage().getHeaders().put('Content-Disposition', 'attachment; filename="SAPGUILauncher.sap"');
    }
}

<apex:page controller="SAPGUILauncher" cache="true" contentType="application/x-unknown">[System]
Name={!$Setup.SAPLauncherSettings__c.SAPName__c}
Description={!$Setup.SAPLauncherSettings__c.SAPDescription__c}
Client={!$Setup.SAPLauncherSettings__c.SAPClient__c}
[User]
Language={!$Setup.SAPLauncherSettings__c.SAPLanguage__c}
[Function]
Title={!$Setup.SAPLauncherSettings__c.SAPTitle__c}
Command=ZSFDCVA01_2 P_AUART={!$CurrentPage.Parameters.OrderType}; P_VKORG={!$CurrentPage.Parameters.SalesOrg}; P_VTWEG={!$CurrentPage.Parameters.DistributionChannel}; P_KUNNR={!$CurrentPage.Parameters.SoldToParty}; P_KUNWE={!$CurrentPage.Parameters.ShipToParty}; P_BSTKD={!$CurrentPage.Parameters.PONumber}; P_MATNR={!$CurrentPage.Parameters.MaterialNumber}; P_KWMENG={!$CurrentPage.Parameters.Quantity};
[Options]
Reuse={!$Setup.SAPLauncherSettings__c.SAPReuse__c}
</apex:page>

Best Answer

Related Solutions

[SalesForce] Isn’t ContentVersion ‘VersionData’ Updateable (Amendable)

[SalesForce] Problem with VF contentType and content-disposition causing IE8+ not to execute a downloaded file

Related Topic