From 56767701009f3dc54c78e36057f751cfdf0e9925 Mon Sep 17 00:00:00 2001
From: z9hang <z9hang@126.com>
Date: Mon, 8 Dec 2014 15:19:10 +0800
Subject: [PATCH] =?UTF-8?q?=E6=B7=BB=E5=8A=A0=E8=AF=BE=E7=A8=8B=E5=88=97?=
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---
 app/services/courses_service.rb | 29 +++++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)
 create mode 100644 app/services/courses_service.rb

diff --git a/app/services/courses_service.rb b/app/services/courses_service.rb
new file mode 100644
index 000000000..0a1fa553d
--- /dev/null
+++ b/app/services/courses_service.rb
@@ -0,0 +1,29 @@
+class CoursesService
+  include ApplicationHelper
+  #参数school_id为0或不传时返回所有课程，否则返回对应学校的课程
+  #参数per_page_count分页功能，每页显示的课程数
+  #参数page分页功能，当前页码
+  def course_list params
+    @school_id = params[:school_id]
+    per_page_option = params[:per_page_count] || 10
+    page_no = params[:page] || 1
+    if @school_id == "0" || @school_id.nil?
+      @courses_all = Course.active.visible.
+        joins("LEFT JOIN #{CourseStatus.table_name} ON #{Course.table_name}.id = #{CourseStatus.table_name}.course_id")
+    else
+      @courses_all = Course.active.visible.
+        joins("LEFT JOIN #{CourseStatus.table_name} ON #{Course.table_name}.id = #{CourseStatus.table_name}.course_id").
+        where("#{Course.table_name}.school_id = ?", @school_id)
+    end
+    @course_count = @courses_all.count
+    @course_pages = Redmine::Pagination::Paginator.new @course_count, per_page_option,page_no
+    @courses = @courses_all.order("created_at desc")
+    @courses = @courses.offset(@course_pages.offset).limit(@course_pages.per_page)
+    course_list = []
+    @courses.each do |course|
+      course_list << {:course => course,:img_url => url_to_avatar(course)}
+    end
+    course_list
+  end
+
+end
\ No newline at end of file