Question

I need to store an "order" in Firestore. It's basically several rows of part#, description, quantity, and price. My initial thought is to store each order as a document where each line/row/lineItem is an array.

Considering search/scale, is this recommended? Or, should each line item of the "order" be a separate document of a top-level collection("order1")?

PART1A    a desc of part1a    3    13.95
PART2B    aanother descrip    7    9.99

UPDATE: Below is my solution. I spent (wasted) a long time thinking about how to .then update my db.collection("users").doc(uid).collection("orders"). After an hour I understood there no reason to do this at all. I've captured the uid in the db.collection("orders").doc() already and can quickly query that to pull a users orders up.

    ordersPageSaveButton.addEventListener('click', function(evt) {
        var batch = db.batch();
        var ordersRef = db.collection("orders").doc();
        var itemRows = parentEl.querySelectorAll(".selected-item-row");
        var name;
        var description;
        var quantity;
        var price;
        var indx;
        var obj = {};
        //order name would be nice
        obj.updated = Date.now();
        obj.owner = firebase.auth().currentUser.uid;
        obj.stage = "saved";
        for (var i = 0; i < itemRows.length; i++) {
            name = itemRows[i].querySelector(".product-container-item-name-wrapper").innerHTML.toString().toLowerCase();
            description = itemRows[i].querySelector(".product-container-description-row").innerHTML.toString().toLowerCase();
            quantity = Number(itemRows[i].querySelector(".product-container-qty-input").value);
            price = itemRows[i].querySelector(".product-container-unit-price-wrapper").innerHTML;
            price = parseFloat(price.replace(/,/g, ''));
            indx = itemRows[i].querySelector(".product-container-row-number-wrapper").innerHTML;
            obj[name] = {
            indx:indx,
            description:description,
            quantity:quantity,
            price:price};
            batch.set(ordersRef, obj);
        }
        // Commit the batch
        batch.commit().then(function () {
            console.log("success");
        }).catch(function(err) {
            console.error(err);
        });
    });

Answer 1

It looks like the firtly mentioned structure is the way to go. Use the order name as the key (collection/$ordername) and description, quantity and price as values.

PART1A
    description: "This is desc of part1a"
    quantity: 3
    price: 13.95

This way you can order by any of the values and the name.

Firestore Data Structuring: Storing An Order in Firestore

1 个答案: