修正项目列表界面搜索空值报错问题

app/controllers/projects_controller.rb

@@ -295,8 +295,12 @@ class ProjectsController < ApplicationController
     project_type = params[:project_type].to_i
     projects_all = (project_type.eql? Project::ProjectType_course) ? Project.course_entities : Project.project_entities
     @projects = projects_all.visible
-    @projects_all = @projects.visible.like(params[:name]) if params[:name].present? 
-
+    #@projects_all = @projects.visible.like(params[:name]) if params[:name].present?
+    if params[:name].present?
+      @projects_all = @projects.visible.like(params[:name])
+    else
+      @projects_all =  @projects;
+    end
         @project_count = @projects_all.count
     @project_pages = Paginator.new @project_count, per_page_option, params['page']