how to fetch data from firebase based on particular value in a node

Question

i have firebase data base as below

projectmasternode

|

 -DS

  |
  ----6125675
  |     |
  |      ----department:"xyz"
  |       --projectname:"sad"

  |
  -----72671273
  |       |
  |         --department:"das"
  |         --projectname:"iuh"

  |
  -----7863873
          |
           --projectname:"sad"
              department :"xyz"

now how to get departments data where department= "xyz".

Jeremy Belolo · Accepted Answer · 2015-02-18 09:47:46Z

3

Your answer is right in the FB docs. Check here : https://www.firebase.com/docs/web/guide/retrieving-data.html#section-queries and take a look at orderByChild combined with another filter, like endAt. Something like

var ref = new Firebase("myfirebase");
ref.orderByChild("department").endAt("xyz").on("child_added", function(snapshot) {
console.log(snapshot.key());
});

Should do it.

answered Feb 18, 2015 at 9:47

Jeremy Belolo

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2 Comments

Jeremy Belolo Over a year ago

Never did it myself in IOS, but I guess it should be pretty much the same, check here : firebase.com/docs/ios/guide/…

Kato Over a year ago

It's pretty much the same. And pretty well covered in the docs. Note that equalTo ( queryEqualToValue in iOS) would be preferable to endAt in this case, since we're emulating where x = y.

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