Salesforce: Trigger on Attachment – Restricting user from attaching files with specific extensions

By default, Salesforce doesn’t allow admin to configure or restrict a user from adding a specific type of files. Admin may need that user should not be able to attach files of type exe, dll which can have the virus in them. Also, there is no virus check is done when a file is getting uploaded to the Salesforce.

But Salesforce does allow writing trigger on the Attachment Object by which you can implement such restrictions. Following is the snippet of the code which will restrict the user from adding the files with extension mentioned in the set list. You can also edit the code and do the reverse by checking if extension exists in the set then only allow attaching the file.

Once trigger code is up and running, whenever Salesforce tries to attach any file with extension exe or dll he will come across following error message.

AttachmentException

Creating multiple tabs for same Salesforce Object

Many time I have seen Salesforce Admins wants multiple tabs for same object depending upon the RecordTypes or some other criteria like separate tabs for Premium Account, Gold Accounts and Silver. Indeed they can create multiple views and use the picklist and use “Go” button. But it has disadvantage like multiple clicks, not that user friendly.

In short there is no direct way of creating multiple tabs for same object in Salesforce. Then I thought of creating an Apex component which will take some inputs like ObjectName, Fields to display and criteria/Filter. This appraoch was needing too much of coding and generic code writing for supporting it for all objects. And it was limited to the query filter one can have.

Creating multiple views is the feature inbuilt provided by the Salesforce and is very powerful. So I thought to use the apex:enhancedList control which takes the viewId as a parameter. You can find the documentation for the EnhancedList here. The most important thing is apex:enhancedlist only requires the viewid.

I created a simple VisualForce Page like below.

<apex:page >
<apex:enhancedList height=”600″ rowsPerPage=”25″ id=”AccountList” listid=”{!$CurrentPage.Parameters.viewId}” customizable=”false”/>
</apex:page>

I wanted to reuse this page so I didn’t added any standard controller to the Page itself.

Then now comes the step of creating the Tabs. Sample purpose I am taking Account’s views.

Salesforce support following three types of tab creation:

  1. Custom Object Tabs: – Not suitable to above approach.
  2. VisualForce Tabs: – This will work but do not allow passing the parameters from the URL, so this will not allow reuse of the same page.
  3. Web Tabs: – This allows any URL integration into the tab and suits requirement.
Complex task is to find the viewId. I didnt found it straight forward.
Creating the Tab now:
Now add this tab to your SelectedTabs.
AS ITS A WEB TAB I WAS NOT ABLE TO SET SELECTED TAB. ANY WORK AROUND?

Salesforce: SF:INVALID_SESSION_ID

I was constantly getting exception when I tried to use the “/soap/ajax/15.0/connection.js” in the VF Page.
JavaScript throws following exception:-

Invalid SessionID

{faultcode:'sf:INVALID_SESSION_ID', faultstring:'INVALID_SESSION_ID: Invalid Session ID found in SessionHeader: Illegal Session', detail:{UnexpectedErrorFault:{exceptionCode:'INVALID_SESSION_ID', exceptionMessage:'Invalid Session ID found in SessionHeader: Illegal Session', }, }, }

The exception was resolved when I added following statement before using the “sforce.connection” object in the JavaScript.

sforce.connection.sessionId = “{!$Api.Session_ID}

🙂

C# : Converting DateTime to format YYYY-MM-DDThh:mm:ssZ

I found that lots of people were searching to convert the datetime into the universal format. Following can be used for the same.

myDateTime.ToString(“u”)

OR

string strDate = DateTime.UtcNow.ToString(“yyyy’-‘MM’-‘dd’T’HH’:’mm’:’ss’Z'”, DateTimeFormatInfo.InvariantInfo);

The custom format string is “yyyy’-‘MM’-‘dd HH’:’mm’:’ss’Z'”.