Update user avatar in LDAP

app/controllers/settings_controller.rb

@@ -19,11 +19,17 @@ class SettingsController < ApplicationController
   def update
     @user.preferences.merge!(user_params[:preferences] || {})
     @user.display_name = user_params[:display_name]
+    current_avatar_checksum = @user.avatar.attached? ? @user.avatar.blob.checksum : nil
     @user.avatar = user_params[:avatar] if user_params[:avatar].present?
 
     if @user.save
       if @user.display_name && (@user.display_name != @user.ldap_entry[:display_name])
-        LdapManager::UpdateDisplayName.call(@user.dn, user_params[:display_name])
+        LdapManager::UpdateDisplayName.call(@user.dn, @user.display_name)
+      end
+
+      if @user.avatar.attached? &&
+         (@user.avatar.blob.checksum != current_avatar_checksum)
+        LdapManager::UpdateAvatar.call(@user.dn, @user.avatar_base64)
       end
 
       redirect_to setting_path(@settings_section), flash: {

app/models/user.rb

@@ -10,9 +10,9 @@ class User < ApplicationRecord
   #
 
   has_one_attached :avatar do |attachable|
-    attachable.variant :small, resize_to_fill: [64, 64]
-    attachable.variant :medium, resize_to_fill: [256, 256]
-    attachable.variant :large, resize_to_fill: [512, 512]
+    attachable.variant :small,  resize_to_fill: [64, 64],   convert: :jpeg
+    attachable.variant :medium, resize_to_fill: [256, 256], convert: :jpeg
+    attachable.variant :large,  resize_to_fill: [512, 512], convert: :jpeg
   end
 
   #
@@ -167,6 +167,11 @@ class User < ApplicationRecord
     @display_name ||= ldap_entry[:display_name]
   end
 
+
+  def avatar_base64(variant: :large)
+    Base64.strict_encode64 avatar.variant(variant).processed.download
+  end
+
   def services_enabled
     ldap_entry[:service] || []
   end

app/services/ldap_manager/update_avatar.rb

@@ -0,0 +1,12 @@
+module LdapManager
+  class UpdateAvatar < LdapManagerService
+    def initialize(dn, img_data)
+      @dn = dn
+      @img_data = img_data
+    end
+
+    def call
+      replace_attribute @dn, :jpegPhoto, @img_data
+    end
+  end
+end