添加课程搜索处理

app/controllers/courses_controller.rb

@@ -87,6 +87,78 @@ class CoursesController < ApplicationController
     end
   end
 
+  # 课程搜索
+  # add by nwb
+  def search
+    courses_all = Course.all_course
+
+    @courses = courses_all.visible
+    if params[:name].present?
+      @courses_all = @courses.like(params[:name])
+    else
+      @courses_all =  @courses;
+    end
+    @course_count = @courses_all.count
+    @course_pages = Paginator.new @course_count, per_page_option, params['page']
+
+
+    @course_activity_count=Hash.new
+    @courses_all.each do |course|
+      @course_activity_count[course.id]=0
+    end
+
+    case params[:course_sort_type]
+      when '0'
+        @courses =  @courses_all.order("created_at desc")
+        @s_type = 0
+        @courses =  @courses.offset(@course_pages.offset).limit(@course_pages.per_page)
+
+        @course_activity_count=get_course_activity @courses,@course_activity_count
+
+      when '1'
+        @courses = @courses_all.order("course_ac_para desc")
+        @s_type = 1
+        @courses =  @courses.offset(@course_pages.offset).limit(@course_pages.per_page)
+
+        @course_activity_count=get_course_activity @courses,@course_activity_count
+
+      when '2'
+        @courses = @courses_all.order("watchers_count desc")
+        @s_type = 2
+        @courses =  @courses.offset(@course_pages.offset).limit(@course_pages.per_page)
+
+        @course_activity_count=get_course_activity @courses,@course_activity_count
+
+      when '3'
+        @course_activity_count=get_course_activity @courses_all,@course_activity_count_array
+        @courses=handle_course @courses_all,@course_activity_count
+        @s_type = 3
+        @courses =  @courses[@course_pages.offset, @course_pages.per_page]
+
+      else
+        @s_type = 0
+        @courses = @courses_all.order("created_at desc")
+        @courses =  @courses.offset(@course_pages.offset).limit(@course_pages.per_page)
+
+         @course_activity_count=get_course_activity @courses,@course_activity_count
+
+    end
+
+    respond_to do |format|
+      format.html {
+        render :layout => 'base'
+        scope = Course
+        unless params[:closed]
+          scope = scope.active
+        end
+      }
+      format.atom {
+        courses = Course.visible.order('created_on DESC').limit(Setting.feeds_limit.to_i).all
+        render_feed(courses, :title => "#{Setting.app_title}: #{l(:label_course_latest)}")
+      }
+    end
+  end
+
   def member
     ## 有角色参数的才是课程，没有的就是项目
     @render_file = 'member_list'

app/models/course.rb

@@ -55,6 +55,7 @@ class Course < ActiveRecord::Base
 
   acts_as_customizable
 
+  scope :all_course
   scope :active, lambda { where(:status => STATUS_ACTIVE) }
   scope :status, lambda {|arg| where(arg.blank? ? nil : {:status => arg.to_i}) }
   scope :all_public, lambda { where(:is_public => true) }
@@ -70,6 +71,14 @@ class Course < ActiveRecord::Base
     end
     where(Course.allowed_to_condition(user, permission, *args))
   }
+  scope :like, lambda {|arg|
+    if arg.blank?
+      where(nil)
+    else
+      pattern = "%#{arg.to_s.strip.downcase}%"
+      where("LOWER(extra) LIKE :p OR LOWER(name) LIKE :p ", :p => pattern)
+    end
+  }
 
   def visible?(user=User.current)
     user.allowed_to?(:view_course, self)