在CouchDB中链接文档

Question

我在我的couch-db中有两种类型的文档（都在同一个数据库中），现在我创建了一个视图，它可以通过“_id”链接两个文档并使用沙发返回数据-db视图URL。现在我想从map函数中获取两种类型的数据。文档和代码的类型如下所示。

文献

department { 
       "_id": "1", 
       "department": "Computers", 
       "type": "Department", 
       "room_no": "102", 
       "HOD": "Mr. G Rahul", 
       "floor": "1st Floor" 
      } 

student { 
      "_id": "fdf370e2f43d4af1b505b8913502a5e4", 
      "_rev": "1-16df9a4cd45ca69009ab6c9767425a8e", 
      "student Name": "H Ravi", 
      "date_of_birth": "March 1, 1993", 
      "roll_no": "55", 
      "inter_marks": "820", 
      "secondary_marks": "420" 
      "department_id": "1", 
      "type": "student" 
     } 

function(doc) { 
      var id,department,student,hod,dob; 
      if(doc.type == 'student') { 
        id = doc.department_id; 
        dob = new Date(doc.date_of_birth) 
       student = doc;  
     } 
     if(doc.type == 'department') { 
      if(doc._id == 'id') { 
      hod = doc.HOD; 
       department = doc; 
     } 
     } 
    emit([dob,hod], {'_id': id,"student_doc": student,"depart_doc":department}); 
} 

第二如果条件没有在上述功能执行地图用功能。以上代码仅为地图功能。

Answer 1

裹一个if语句中的两个测试：

function(doc) { 
    var id,department,student,hod,dob; 
    if(doc.type) { 
     if(doc.type === 'student') { ... } 
     if(doc.type === 'department') { ... } 
    } 
    emit([dob,hod], {'_id': id,"student_doc": student,"depart_doc":department}); 
}