Can I disable the Chatter mention?

Question

I would ask if I can disable the Chatter mention in a standard way or I must use a custom solution as a Trigger.

Answer 1

At the moment, Apex Triggers is the only option AFAIK to restrict mention on user/group level.

Suggestion: Use hierarchical custom setting to make the user/profile configurable.

There is [would be] a feature available for groups:

1. Keep Discussions Focused with Broadcast Groups—Generally Available
2. Broadcast Groups—Pilot

Answer 2

I wrote two triggers, on FeedItem and FeedComment.

FeedItem Trigger:

trigger MentionFeedItem on FeedItem (before insert, before update) {

List<User> listUserPlatform = [SELECT ID, Name FROM User];
List<String> listNameUserPlatform = new List<String>();

for(User u : listaUserPlatform) {
    listNameUserPlatform.add('@'+u.Name);
}

for(FeedItem f : Trigger.new) {
    Boolean nameFinded = false;
    for(Integer i=0; i < listNameUserPlatform.size() && !nameFinded; i++) {
        if( f.Body.contains(listNameUserPlatform.get(i)) ) {
            nameFinded=true;
            f.addError('You can\'t use mention');
        }
    }
}

FeedComment trigger:

trigger MentionFeedComment on FeedComment (before insert, before update) {

List<User> listUserPlatform = [SELECT ID, Name FROM User];
List<String> listNameUserPlatform = new List<String>();

for(User u : listaUserPlatform) {
    listNameUserPlatform.add('@'+u.Name);
}

for(FeedComment f : Trigger.new) {
    Boolean nameFinded = false;
    for(Integer i=0; i < listNameUserPlatform.size() && !nameFinded; i++) {
        if( f.CommentBody .contains(listNameUserPlatform.get(i)) ) {
            nameFinded=true;
            f.addError('You can\'t use mention');
        }
    }
}

}

Thanks :)

Answer 3

To basically disable mentions in Salesforce Communities specifically:

1.) In Setup ---> Sharing Settings, Set the Default External Access "Users" to private.

2.) In Setup ---> Sharing Settings, Uncheck both "Portal User Visibility" and "Community User Visibility" checkboxes.