Shopify update the inventory for the custom bundle - shopify

I am trying to create a bundle for the Shopify site. I do not want to use the Shopify app to create the bundle. Product A has 30 variants. A customer has to buy 6 quantity of variants at a time. It could be any 6 variants. How can I update the inventory for all the variants when the checkout is done?

You don't update inventory, Shopify updates inventory. Your job instead is to ensure the correct number of variants go into the checkout. If you have trouble with that, you can always help yourself out with some clever product manipulations. Another solution is to listen to the checkout and examine the products sold. You can then alter inventory levels to suit your needs.
Almost all the bundle Apps do the same thing. You can try them out and see if that squares your circle. I made one of the original bundlers whereby I had it so in a bundle, made of N products, the merchant could tag each variant for a specific quantity, and then the customer would be buying those specific quantities when buying the product. I would use Ajax calls to check quantity live, and when the product was purchased I would then deduct the right inventory quantities because the product itself had infinite quantity.
That was very sophisticated and worked most of the time, but completely messed up when customers would SIT on the cart. Inventory levels would change, and valid carts at the time would become stale, and inventory would be messed up, resulting in overselling stock. Me bad. Shopify bad. Bundling bad. With Shopify Plus, all that kind of went out the window, and bundles are much easier. Without Plus, you gamble!

Related

On user selection, set product price to 0 for cart, checkout in shopify

I am facing a issue in shopify. The issue is I am listing products on a page with price. But i want whatever first 3 products customer click should be free for them. The fourth one they click should be of price set on backend.
So basically all products will have price. But first 3 client select should be free for them. Is this customization possible in shopify?
You have two choices. One, you use Shopify Plus, and with that you are free to script the checkout and change prices to free on items in the checkout. Or two, without Plus, you are free to use Discount Codes to bring the price of a checkout down to zero for items that meet criteria you setup. Those are your only sane choices at this time.

Scheduling Price Changes in Shopify Plus where my ERP can't

I have a retail website built in Shopify Plus that is fed by an ERP. A couple times a month at least, I have sale events where some (not all) items get varying levels of discounts (I'll call this my store-wide sale), but my ERP doesn't have the ability to schedule temporary price changes.
I also have unrelated discounts that happen at the item level outside the store-wide sale cycle, so the solution needs to be able these to the store-wide sale price for that item and choose the lower of the two.
I can manually change all my prices with immediate effect in the ERP to start the sale and then manually do it again to put them back to the way it was, but that's time consuming, and normally needs to happen outside business hours. If I change the price in Shopify, the ERP just over-writes them.
Is this possible? Is there a solution short of implementing a PIM that will allow me to schedule my price changes in this way?
I was thinking of potentially keeping my store-wide discounts in a metafield and/or a tag on each item and using a script to do the math, pick the best price, and change the price at the line level in cart and maybe Javascript to over-write price displayed on the PDP and PLP to show that same price.
I realised a lot of merchants needed this, so I built an app for this. I'm sure it will do exactly as you need.
https://apps.shopify.com/simple-simons-price-scheduler
If you need additional features, just submit a request via the contact form. I'm pretty quick to implement features if I feel they're beneficial.

Shopify changing product price for variation by app

I am a shopify partner, I am trying to get around the the variant limits of shopify by coding an app and also because my client has a complicated formula for calculating the price. I don't have a problem with the part that adds the information for my variants to the order, however when I want to modify the price based on the user selection, it doesn't seem an easy task to do.
I came across couple of apps which does the same thing by adding a new product or variation which is not optimal for my use case, is there any app that does the job without adding extra information to the database, if so, how?
Qualified Yes
Unfortunately, Shopify doesn't give us a lot of options to edit prices of items dynamically. Here are the two options that I know of that will allow you to adjust the price of a product directly - however, both have limitations.
Using Shopify Script Editor
If you're working with a Shopify Plus merchant, you can use the Shopify Script Editor to dynamically adjust the prices of products, provided that the direction you adjust is down. You cannot increase the price of a product using the script editor - so for your use case, the list price would have to be the most expensive possible price that the item sells for, which you would then discount appropriately using the app.
Using draft orders
Using an app, you can use Shopify's Draft Order API to create an order with custom discounts and/or create completely custom items that are independent of the products set up in the product database.
The basic flow for this is that when the customer clicks 'checkout' you halt the normal navigation, send the cart contents to your app, create a draft order with the appropriate pricing, then supply the front-end code with the draft-order checkout/invoice URL so that you can send the customer there instead of the normal checkout. This has several limitations, however, including that prices of existing products can only be discounted, not increased, and the fact that Shopify will not allow a customer to use discount codes on a draft order invoice - once an order is set up this way, Shopify's assumption is that all prices are final.
Disclaimer: Sorry if someone sensible doesn't like a response with a link :) I'm not related to this app I'm just a user.
On a project with complex pricing, we use the app Wholesale Pricing Discount by Wholesale Helper we liked because is easy to import multiple pricing by-product and relate it by customer.
this app does not multiply the products, they use customer tags. maybe that can give you some guidance.
An important rule on Shopify is you can't increase the price by API on an order, you can just reduce i

Is there a recommended way of selling a 3-pack of a product for a discounted rate?

I have a product on a Shopify website that is normally $20 but when buying a pack of three it becomes $45 total (ie: $15 each). The three pack has a separate SKU, but I would love it if my customers could simply have buttons on the product page to switch between the variations. The pack of three should have color selection options, but it should be clear to the user that all the products in the pack will be the same color. If you have any advice, I would greatly appreciate it.
There are a few approaches, but since you haven't provided a code example of what have you tried I will only list them.
App
You can use a discount APP
Different product
You can use a different product that will handle the bundle price
Shopify Scripts
If you are on a Shopify Plus store you have the option of writing custom Ruby scripts that can modify the cart items and their price. You can write a script that will modify the item price based on properties that are tied to the bundle product.
It sounds like you just need to add another variant option. Just call it as Pack of 3 and set to this variant a different SKU and a price of $45. Based on your question description this will totally suit your case.

Shopping cart - the right way?

I need to implement shopping cart for my website. I decided to store carts in database rather that in session. My website serves as a platform for selling items between users. That said, users can edit their own products any time.
I understand that I can't just use product ID in the cart, because user need to get whatever he put to the cart. If the product is being changed after he put it to the cart, it shouldn't affect what he ordered, correct?
How is it usually solved? Should I copy entire product to the cart? Or maybe rather save versions of particular product and link to them? Another idea would be to inform customer on checkout that the product changed.
How is it solved in popular e-commerce platforms?
I understand that I can't just use product ID in the cart, because
user need to get whatever he put to the cart. If the product is being
changed after he put it to the cart, it shouldn't affect what he
ordered, correct?
the product price is going to change. the inventory is going to change. if a product goes out of inventory you want the customer to know so they can make another choice. if the product price has gone up or down, the cart should reflect the current price. so that means the cart will check the product table for the product pricing and inventory at different steps before the final transaction.
as part of the cart to product lookup -- if the pricing has changed you can alert the user. just as important - if the customer has ordered quantity 4 of a product, but the inventory has gone down to just 3 of them -- you have to change the cart and make it very obvious to the customer what just happened.
there are only two things the cart is responsible for - the product id, and the quantity to be sold. anything else stored in the cart is just to make it easier to display the product on the cart page or information needed for the merchant.