新增：后台管理项目列表项目类别筛选

app/controllers/admins/projects_controller.rb

@@ -7,6 +7,16 @@ class Admins::ProjectsController < Admins::BaseController
     sort_direction = %w(desc asc).include?(params[:sort_direction]) ? params[:sort_direction] : 'desc'
     search = params[:search].to_s.strip
     projects = Project.where("name like ? OR identifier LIKE ?", "%#{search}%", "%#{search}%").order("#{sort_by} #{sort_direction}")
+    case params[:category]
+    when 'public'
+      projects = projects.where(is_public: true)
+    when 'private'
+      projects = projects.where(is_public: false)
+    when 'fork'
+      projects = projects.where.not(forked_from_project_id: nil)
+    when 'original'
+      projects = projects.where(forked_from_project_id: nil, project_type: 'common')
+    end
     @projects = paginate projects.includes(:owner, :members, :issues, :versions, :attachments, :project_score)
   end