Searching in Firebase without server side code

Question

I am trying to get all the users having the name that contains a given string from Firebase. For example, if I have these users:

Devid, Andy, Bob

I would like to get all the users having the name that contains a 'D' so I expect this as result:

Devid, Andy

This is my Firebase's structure at the moment:

Since Firebase is case sensitive I've created an attribute name_ that contains the lowercase name.

Using startAt and endAt I can get all the users with the name starting with a defined string

ref.orderByChild("name_").startAt(text).endAt(text+"uf8ff").on('value', ...);

But this gives me only the users having the name that starts with a given string, for example if text is 'D' I'll get:

Devid

1) At the moment my query means, "give me all the users having name_ that starts with a given string" is there a way to make it mean "give me all the users which name contains a given string"? EDIT: NO

Firebase Queries don't have anything similar to full-text search operators. To accomplish those, you'll either have to integrate an external full-text search engine, or come up with a very elaborate custom indexing scheme. Firebase and indexing/search

2) At the moment I don't want to have server side code, what can be a good and efficient way to implement custom indexes?

Thanks

Answer 1

Waitting for answers