ProductSingle

Purpose

The ProductSingle component renders the product details page.

It:

renders a product gallery (main + thumbnails) and a sticky header summary on scroll

renders product title, tags, SKU/MPN (optionally), price, and add-to-cart actions

supports product actions (comparison, wishlist, shopping lists) when feature flags are enabled

supports variant selection and quantity rules (including a Matrix-style quantity table)

sends GA4 viewItem for the product

Inputs (model contract)

Model shape (storefront example)

{
  "showAttributes": false,
  "showAttachments": false,
  "showGalleryInline": true,
  "mainGalleryToLeft": true,
  "variantsDisplayType": "Simple",
  "productData": {
    "id": "Product Id",
    "title": "Sample product title",
    "tags": [
      "sample-tag",
      "..."
    ],
    "description": "<p>Sample description</p>",
    "link": "product/sample-product",
    "isMpnVisible": true,
    "isSkuVisible": true,
    "hasPriceRange": false,
    "maxPrice": 69.9,
    "minPrice": 69.9,
    "startPriceText": "Sample price text",
    "startPrice": 69.9,
    "vatIncluded": true,
    "inWishlist": false,
    "extraFields": [],
    "dimension1": {
      "attributeId": "Attribute Id",
      "name": "Sample text",
      "usedAsFilter": true,
      "displayOnProduct": true,
      "displayOnList": true,
      "displayOnCompare": true,
      "type": "Color",
      "items": [
        {
          "id": "Attribute Item Id",
          "value": "Sample text",
          "textColor": "#000000"
        },
        "..."
      ]
    },
    "dimension2": {
      "attributeId": "Attribute Id",
      "name": "Sample text",
      "usedAsFilter": true,
      "displayOnProduct": true,
      "displayOnList": true,
      "displayOnCompare": true,
      "type": "Size",
      "items": [
        {
          "id": "Attribute Item Id",
          "value": "S"
        },
        "..."
      ]
    },
    "attachments": [
      {
        "alt": "sample.pdf",
        "link": "https://example.com/media/sample.pdf",
        "title": "sample.pdf",
        "icon": {
          "alt": "sample.pdf",
          "link": "https://example.com/media/sample.pdf"
        }
      },
      "..."
    ],
    "attributes": [
      {
        "name": "Sample text",
        "attributeItemValue": "Sample text"
      },
      "..."
    ],
    "icoTags": [
      {
        "name": "Sample text",
        "icon": {}
      },
      "..."
    ],
    "labels": [
      {
        "name": "Sample text",
        "icon": {}
      },
      "..."
    ],
    "productVariants": [
      {
        "id": "Variant Id",
        "dimension1ItemId": "Attribute Item Id",
        "dimension2ItemId": "Attribute Item Id",
        "title": "",
        "canOrder": true,
        "startQuantity": 1,
        "price": 69.9,
        "initialPrice": 90,
        "finalPriceText": "Sample price text",
        "finalPrice": 69.9,
        "originalPriceText": "Sample price text",
        "originalPrice": 90,
        "mediaItem": {
          "id": "Media Item Id"
        },
        "stockAvailability": {
          "label": "OutOfStock"
        },
        "quantityConstraints": {
          "additive": {
            "minimum": 1,
            "maximum": 999999,
            "step": 1,
            "isValid": true
          },
          "absolute": {
            "minimum": 1,
            "maximum": 999999,
            "step": 1,
            "isValid": true
          }
        },
        "shoppingLists": []
      },
      "..."
    ],
    "mediaItems": [
      {
        "id": "Media Item Id",
        "link": "https://example.com/media/sample.jpg",
        "alt": "sample.jpg"
      },
      "..."
    ]
  },
  "groupProductsData": null,
  "name": "ProductSingle",
  "view": "Default",
  "section": "SectionA",
  "settings": {
    "additionalFields": [],
    "showAttributes": false,
    "showAttachments": false,
    "showGalleryInline": true,
    "mainGalleryToLeft": true,
    "variantsDisplayType": "Simple",
    "id": "Component Id",
    "section": "SectionA",
    "type": "NoirProductSingle",
    "name": "ProductSingle",
    "configuredInContentApi": true,
    "view": "Default",
    "displayName": "Sample text",
    "cssClass": "",
    "header": "",
    "alignment": "Left"
  },
  "translations": {
    "productImage": "Sample text",
    "viewImage": "Sample text",
    "oneSize": "Sample text",
    "...": "..."
  }
}

Required fields

settings.id

productData

The component assumes productData is a full product view model.

Optional fields

Flags that affect template rendering:

showGalleryInline

mainGalleryToLeft (used only when showGalleryInline == true)

showAttributes

showAttachments

variantsDisplayType (Simple or Matrix)

productData.mediaItems[]

When empty/missing, the template renders a fallback “no image” slide.

productData.tags[]

productData.isMpnVisible, productData.isSkuVisible

productData.dimension1, productData.dimension2

When present, the UI renders variant selectors / matrix table.

groupProductsData

When present (not null/empty), some sticky add-to-cart UI is suppressed.

translations.*

Many user-facing strings come from translations (only a small sample is shown above).

The component settings also include:

model.Settings.CssClass

model.Settings.VariantsDisplayType

Root.Page.Metas (Liquid)
Optional page metadata available in the global render context; used by the template for SEO/meta tags (Open Graph, structured data, etc.).

Template behavior (Liquid + Alpine)

Describe rendering flow, state branches, and key Liquid/Alpine behavior.

JavaScript

Global object

Components/ProductSingle/Default.js exposes:

Liquid calls it on page load:

productsingledefault.init({{ product | serialize | escape }});

init

Builds a minimal GA item object (id/title/price/initialPrice).

Sends GA4 viewItem for the product.

Key behaviors / edge cases

Price selection:

if product.hasPriceRange → uses product.startPrice

otherwise → uses product.productVariants[0].finalPrice

Notes:

If you change where the “current variant price” lives, update this GA mapping.

matrixTable

Returns an Alpine state object for the Matrix variant UI (quantity-per-dimension grid).

Manages quantities keyed by rendered matrix coordinates and prepares payloads for a “multiple add to cart” request.

Key behaviors / edge cases

Supports 1D and 2D matrices:

1D: only one dimension present (rows are null)

2D: both dimensions present

If Color is on dimension2, it swaps row/column axes so Color becomes rows.

Uses per-cell debounce + axios cancel tokens when checkQuantity is enabled.

Notes:

The mapping between dimension items and UI axes is subtle (because of the Color swap). Be careful when changing dimension types.

getKey

Builds a stable string key for a matrix cell.

Key behaviors / edge cases

1D keys are just the column id.

2D keys are ${rowId}_${columnId}.

getVariantByMatrix

Finds the product variant object that corresponds to the provided matrix coordinates.

Key behaviors / edge cases

1D: matches either dimension1ItemId or dimension2ItemId.

2D: matches both dimension ids, respecting the Color swap rule.

init

Computes the matrix axes (rows, columns) based on product.dimension1 / product.dimension2.

Initializes quantities for each variant.

Initializes rowQuantities in 2D mode.

Computes the matrix axes (rows, columns) based on product.dimension1 / product.dimension2.

Initializes quantities for each variant.

Initializes rowQuantities in 2D mode.

Calls buildMatrix() to build the initial matrix, then hydrateConstraints() to load personalized quantity constraints.

buildMatrix

Builds rows/columns/rowName/columnName from product.dimension1/product.dimension2, applying the Color-swap rule (Color always renders as rows in 2D mode).

Seeds quantities for every variant, keyed by matrix coordinates (getKey), and recomputes rowQuantities per row.

Key behaviors / edge cases

Only seeds a quantity when the coordinate key is still undefined; re-running buildMatrix() after async constraint hydration never resets quantities a user already typed while hydration was in flight.

Runs again after hydrateConstraints() resolves, so the matrix reflects real per-visitor constraints without losing in-progress input.

hydrateConstraints

Hydrates personalized quantity constraints client-side via servicesreusabledefault.hydrateProductConstraints(product), since the server renders the matrix from a cached, personalization-free payload.

On success or failure, reassigns this.variants from the shared product.productVariants reference and calls buildMatrix() again so min/step/max and validity reflect the real constraints.

Key behaviors / edge cases

Logs a console error on failure but still rebuilds the matrix, so the UI never gets stuck without quantities.

The server revalidates the real constraints again on the actual add-to-cart call, so this hydration is a UX optimization, not a security boundary.

updateRowQuantities

Computes the total quantity across all columns for a single row.

updateVariantsToSend

Keeps variantsToSend in sync with the current quantities (only entries with quantity > 0).

getTotalQuantity

Sums all quantities values.

getTotalPrice

Calculates the total value based on each cell quantity * the matched variant finalPrice.

Key behaviors / edge cases

Returns a string with 2 decimals (toFixed(2)).

getVariant

Convenience wrapper for getVariantByMatrix(...).

debounceUpdateProduct

Cancels any scheduled update for the same cell and schedules a new one.

Cancels the in-flight axios request for the same cell (if present).

Cancels any scheduled update for the same cell and schedules a new one.

Cancels the in-flight axios request for the same cell (if present).

updateQuantityMultiple

Updates per-variant quantities.

When checkQuantity == true, calls servicesreusabledefault.updateProductQuantity(...) to validate/normalize requested quantities and update constraints.

Updates per-variant quantities.

When checkQuantity == true, calls servicesreusabledefault.updateProductQuantity(...) to validate/normalize requested quantities and update constraints.

Key behaviors / edge cases

Uses axios.CancelToken.source() per matrix cell to avoid races.

Clears toasts (Alpine.store("toast").removeAll()) before per-cell updates.

On API failure, shows a toast with updateProductQuantityErrorMessage.

isOutOfStock

Returns whether the cell variant is out of stock (based on variant availability / stock flags).

Treats a variant as out of stock when its quantityConstraints.additive.isValid is false.

getQuantity

Returns the quantity for a given matrix cell.

Reads the quantity for a given matrix cell.

handleMultiAddToCart

Sends a “multiple add to cart” request for the selected variants.

Sends a bulk add-to-cart request via servicesreusabledefault.addMultipleToCart(...).

On success, resets quantities based on the returned cart items’ minimum constraints.

Key behaviors / edge cases

Builds a variations payload that includes dimension text values (dim1Value, dim2Value) when dimensions exist.

Shows an error toast on failure.

increaseProductQuantityMultiple

Increases quantity for the given cell while enforcing step/min/max rules.

Increments a cell quantity, respecting constraint:

minimum

maximum

step

decreaseProductQuantityMultiple

Decreases quantity for the given cell while enforcing min rules.

Decrements a cell quantity by step; when it drops below minimum, it becomes 0.

groupTable

Returns an Alpine state object for the group-variants table (products sold as a group of related variants shown in one table, distinct from the dimension Matrix above).

Layered as x-data on the table inside the root ProductListItem reusable scope, so cart methods (canAddToCart, decreaseQuantity, increaseQuantity, updateQuantity, handleAddToCart, isAdding, quantityCalculating) still resolve to the parent component through Alpine's scope chain — only the constraint-hydration/lookup helpers (gv, gc, hydrateConstraints) live here.

Key behaviors / edge cases

The server-rendered (cached) markup does not include personalized quantity constraints; this component hydrates them client-side per group variant.

init

Seeds every group variant with permissive default constraints (servicesreusabledefault._applyDefaultConstraints(groupVariant)) before async hydration.

Key behaviors / edge cases

Without this seed, the row would visually look enabled (since gc() falls back to a permissive default) but clicks would no-op until hydration finished, because the parent's handleAddToCart/canAddToCart treat a missing quantityConstraints.additive.isValid as false.

Calls hydrateConstraints() after seeding.

hydrateConstraints

Hydrates real per-visitor quantity constraints for every group variant in parallel via servicesreusabledefault.hydrateProductConstraints(groupVariant).

Reassigns this.groupVariants = [...this.groupVariants] afterwards so Alpine getters reading nested constraint fields recompute.

Key behaviors / edge cases

Logs a console error per failed variant but does not block the others; the seeded defaults from init() remain in place for any variant whose hydration failed.

The server still revalidates the real constraints on the actual add-to-cart call.

gv(variantId)

Resolves the group variant whose primary product variant (productVariants[0].id) matches the given variantId.

gc(variantId)

Resolves the additive quantity constraints for a given variant id, returning the seeded/hydrated constraints or a permissive default ({ minimum: 1, maximum: null, step: 1, isValid: true }) when not yet available.

Global Alpine stores (used by ProductSingle)

Alpine.store("toast") (user feedback)

The Matrix logic uses the toast store to show errors when API calls fail:

clears previous toasts before an update attempt (removeAll())

shows an error toast when updateProductQuantity(...) fails

shows an error toast when addMultipleToCart(...) fails

Services / API calls

servicesreusabledefault.updateProductQuantity(...)

Used when Matrix mode validates a requested quantity.

servicesreusabledefault.addMultipleToCart(...)

Used to add multiple variants to cart in one request.

servicesreusabledefault.hydrateProductConstraints(product)

Called on mount to load personalized quantity constraints client-side (non-blocking). The server renders from a cached view model; constraints are fetched separately per product.

servicesreusabledefault._applyDefaultConstraints(product)

Called as a fallback when hydrateProductConstraints fails, to keep the product orderable with permissive defaults.

Dependencies

Alpine.js

axios (for cancel tokens)

Theme utilities:

sendGAEvent(...)

Alpine stores:

toast

Notes

The Liquid template uses productlistitemreusabledefault.initComponent(...) for the core product UI state (variant selection, quantity display, add-to-cart interactions, sticky state).

In the Liquid template you’ll see it referenced via Alpine expressions like variantOrDefault(...), canAddToCart(), handleAddToCart(), and updateStickyState().

These are not implemented in Components/ProductSingle/Default.js; they come from the Reusables\\ProductListItem JS.

productsingledefault only adds:

GA4 viewItem (init(product))

Matrix-table logic + API calls for quantity validation / multi-add (matrixTable(...))

The template reads feature flags from GlobalData.Settings (wishlist, comparison, shopping lists) to conditionally render action buttons.

The template renders product.description as raw HTML.

Extras

Template behavior (Liquid + Alpine)

Computes the image layout class based on showGalleryInline + mainGalleryToLeft.

Calls swiperInitSingleProductImages(id, showGalleryInline) to initialize the image gallery swipers.

Renders a sticky header summary with:

a fallback image if the product has no media

title, price, and add-to-cart button

sticky navigation buttons to sections that exist on the page (description, attributes, documentation)

ProductSingle

Purpose#

Inputs (model contract)#

Model shape (storefront example)#

Required fields#

Optional fields#

Template behavior (Liquid + Alpine)#

JavaScript#

Global object#

init#

matrixTable#

getKey#

getVariantByMatrix#

init#

buildMatrix#

hydrateConstraints#

updateRowQuantities#

updateVariantsToSend#

getTotalQuantity#

getTotalPrice#

getVariant#

debounceUpdateProduct#

updateQuantityMultiple#

isOutOfStock#

getQuantity#

handleMultiAddToCart#

increaseProductQuantityMultiple#

decreaseProductQuantityMultiple#

groupTable#

init#

hydrateConstraints#

gv(variantId)#

gc(variantId)#

Global Alpine stores (used by ProductSingle)#

Alpine.store("toast") (user feedback)#

Services / API calls#

Dependencies#

Notes#

Extras#

Template behavior (Liquid + Alpine)#

Purpose

Inputs (model contract)

Model shape (storefront example)

Required fields

Optional fields

Template behavior (Liquid + Alpine)

JavaScript

Global object

init

matrixTable

getKey

getVariantByMatrix

init

buildMatrix

hydrateConstraints

updateRowQuantities

updateVariantsToSend

getTotalQuantity

getTotalPrice

getVariant

debounceUpdateProduct

updateQuantityMultiple

isOutOfStock

getQuantity

handleMultiAddToCart

increaseProductQuantityMultiple

decreaseProductQuantityMultiple

groupTable

init

hydrateConstraints

gv(variantId)

gc(variantId)

Global Alpine stores (used by ProductSingle)

Alpine.store("toast") (user feedback)

Services / API calls

Dependencies

Notes

Extras

Template behavior (Liquid + Alpine)