Firebase database strucutre

Question

I\'m currently creating an e-commerce app for iOS and I\'m having trouble deciding on how to structure my database for the scenario of a user searching for an item by \"keywords

Answer 1

How about:

 items
      item0
        color: black
        type: t-shirt
        option: design
        keywords: black_t-shirt_design
      item1
        color: black
        type: hat
        option: design
        keywords: black_hat_design

then a simple query using startingAt and endingAt.

So for example, say the user is using a filter to narrow the results and wants to know about all of the black hats and doesn't care what the option parameter is:

itemsRef.queryOrdered(byChild: "keywords")
        .queryStarting(atValue: "black_hat")
        .queryEnding(atValue: "black_hat")

likewise if the user wanted to know about all of the clothing that's just black, you could query on the 'color' child for black.

But if they wanted all of the black hats with the design option

itemsRef.queryOrdered(byChild: "keywords")
        .queryStarting(atValue: "black_hat_design")
        .queryEnding(atValue: "black_hat_design")