fix bug

apps/exams/Lib/Model/ExamsPaperModel.class.php

@@ -61,6 +61,7 @@ class ExamsPaperModel extends Model
                 $data[$key]['paper_subject_fullpath'] = $subjectModel->getFullPathById($v['exams_subject_id']);
                 $data[$key]['exams_module_title']     = $this->getModuleTitleAttr($v['exams_module_id']);
                 $data[$key]['level_title']            = $this->getLevelTitle($v['level']);
+                $data[$key]['is_buy'] = $this->isBuy($v['exams_paper_id'], $this->mid);
                 // 判断自动组卷(1)和手动组卷
                 if ($v['assembly_type'] == 1) {
                     $paper_options = unserialize($v['paper_options']);
@@ -111,6 +112,12 @@ class ExamsPaperModel extends Model
         return M('exams_module')->where('exams_module_id=' . $module_id)->getField('title');
     }
 
+    public function isBuy($id, $uid)
+    {
+        $order = M('el_exams_paper_order')->where("uid = {$uid} and paper_id = {$id} and pay_status = 3")->getField('id');
+        return !empty($order) ? 1 : 0;
+    }
+
     /**
      * 获取试卷难度名称
      * @Author MartinSun<syh@sunyonghong.com>