关于Cloud Firestore中的查询

我正在使用Flutter对Cloud Firestore进行一些研究.目前，我正在调查Cloud Firestore中的查询.在下面给出的数据库屏幕快照中，我对如何查询有一个基本的了解:

I'm doing some research on cloud firestore using flutter. Currently I'm looking into querying in cloud firestore. I got a basic idea of how to query like say in the screenshot of the database given below :

第二(Some Dumb Shit)和第三(Some Good Shit)项目属于硬件"领域. .....因此，如果我想根据其领域搜索项目......我会做这样的事情:

The 2nd (Some Dumb Shit) and 3rd (Some Good Shit) projects belong to the field "Hardware" ..... So if I want to search a project with respect to its field ..... I'll do something like this :

databaseReference.collection("Projects").where("Field",isEqualTo: "Hardware")

但是要说我是否要根据成员的名称搜索项目(请参阅上面的屏幕截图.....我需要搜索名称为"Sarvesh Dalvi"的项目，其中包含"Sarvesh Dalvi".成员"字段).在这种情况下，我应该如何编写查询.

But say if I want to search projects based on the name of the members ( Referring to the screenshot above ..... I need to search of a project where a name "Sarvesh Dalvi" is present inside the "Members" field). How am I supposed to write a query in this case.

注意:

名称("Sarvesh Dalvi")出现在此层次结构中: DocumentID(例如:"Some Dumb Shit")/Array("Members")/Map({ Name:__ ，MemberRef:__});

Name ("Sarvesh Dalvi") is present inside this heirarchy : DocumentID(eg : "Some Dumb Shit") / Array("Members") / Map({Name : __ , MemberRef :__});

预先感谢您的帮助.

更新:

我学习了如何通过执行以下操作来访问数组:

I learned how to access an array by doing something like this :

Future<dynamic> getUserProjectFromDatabase(String username)
  {
    return databaseReference.collection("Projects").where("Members",arrayContains: {"Name" : username}).getDocuments().then((value){
      print(value.documents.length);
      value.documents.forEach((element) {print(element.data);});
    });
  }

但是，如果地图仅包含:

But this works if the Map only contains :

{"Name" : username};

但就我而言，我的地图是这样的:

But in my case my Map is something like this :

{
"Name" : username,
"MemberRef" : /*Reference to a Document*/
};

[请参阅上面的屏幕截图]

[Refer to the screenshot posted above]

我只想查询地图内的名称，而不要查询MemberRef……，所以如何查询:

I only want to query for the Name inside the map and not the MemberRef...... so how can I query something like :

Future<dynamic> getUserProjectFromDatabase(String username)
  {
    return databaseReference.collection("Projects").where("Members",arrayContains: {"Name" : username,"MemberRef" : /* can be anything */}).getDocuments().then((value){
      print(value.documents.length);
      value.documents.forEach((element) {print(element.data);});
    });
  }