按时间戳月份查询firebase条数据

Question

So i have my records in firebase cloud firestore like this:

[  
   {  
      "category":"drinks",
      "expensetype":"card",
      "id":"5c673c4d-0a7f-9bb4-75e6-e71c47aa8d1d",
      "name":"JJ",
      "note":"YY",
      "price":57,
      "timestamp":"2017-11-30T22:44:43+05:30"
   },
   {  
      "category":"drinks",
      "expensetype":"card",
      "id":"85731878-eaed-2740-6802-e35e7758270b",
      "name":"VV",
      "note":"TTT",
      "price":40,
      "timestamp":"2017-12-30T22:41:13+05:30"
   }
]

I want to query data with the timestamp and get data that belongs to a particular month or date.

For example if I click a particular month (say March) in my calendar, I want only the data of that particular month in my results. How can i do that?

I have saved the date using firebase.firestore.FieldValue.serverTimestamp()

Thanks in advance for any help.

Edit:

This is how I form my query

var spendsRef = this.db.collection('spend', ref => ref.where("timestamp", ">", "12-12-2017"));

this.items = spendsRef.valueChanges();

But it still returns me all the data in Database

Answer:

var todayDate = new Date("Tue Jan 02 2018 00:00:00 GMT+0530 (IST)") // Any date in string
var spendsRef = this.db.collection('spend', ref => ref.where("timestamp", ">", todayDate));
this.items = spendsRef.valueChanges();

Answer 1

使用两个相对运算符，可以确定查询返回的文档的精确范围：

ref.where("timestamp", ">=", "2017-11").where("timestamp", "<", "2017-12")

Answer 2

This is the android way

Query query = mFirestore.collection("rootcollection").whereEqualTo("month", 3);

you can further sort the result by timestamp

Query query = mFirestore.collection("rootcollection")
    .orderBy("timestamp", Query.Direction.DESCENDING)
    .whereEqualTo("month", 3);

Answer 3

I am working with node.js and storing one parameter as new Date(new Date().toUTCString()) .

Now, I fetch the same data, do some processing over it and use the parameter as new Date(<param received in fetch>) in where query to get the same record amongst many records.

Thank you @Syed Sehu Mujammil A, your answer worked.

Answer 4

I solved a similar problem by:

 var now = new Date(new Date().toUTCString());
 const db = collection(fireStore, 'jobs_col');
 return await getDocs(query(db, where('expire_date', '>=', now)));