add: forge platform url and get image action

app/helpers/api_index_helper.rb

@@ -26,7 +26,7 @@ module ApiIndexHelper
     {username: user.show_real_name, 
       user_id: user.id,
       login: user.login,
-      image_url: "/images/#{url_to_avatar(user)}?#{Time.now.to_i}",
+      image_url: "/images/#{forge_user_url_avatar(user)}?#{Time.now.to_i}",
       admin: user.admin?,
       user_url: "/users/#{user.try(:login)}"
      }

app/helpers/application_helper.rb

@@ -159,6 +159,10 @@ module ApplicationHelper
     end
   end
 
+  def forge_user_url_avatar(source)
+    Rails.application.config_for(:configuration)['forge_platform_url'] + "/api/users/#{source&.login}/get_image" if source.class.to_s == 'User'
+  end
+
   # 主页banner图
   def banner_img(source_type)
     if File.exist?(disk_filename(source_type, "banner"))

app/views/users/get_user_info.json.jbuilder

@@ -2,7 +2,7 @@ json.username @user.full_name
 json.real_name @user.real_name
 json.login @user.login
 json.user_id @user.id
-json.image_url url_to_avatar(@user)
+json.image_url forge_user_url_avatar(@user)
 json.admin @user.admin?
 json.is_teacher @user.user_extension&.teacher?
 json.user_identity @user.identity