Case study · 2025–2026
Vorhang Schweiz
When every centimeter changes the product, a dropdown full of Shopify variants is not a product strategy.
- Shopify
- Liquid
- JavaScript
- Theme customization
- Discipline
- Made-to-measure ecommerce · Dynamic pricing · Product configurator
- Year
- 2025–2026
- Engagement
- Fixed scope
- Status
- Live
01Context
- Capture made-to-measure dimensions and product options.
- Calculate pricing dynamically from configuration choices.
- Integrate custom configuration into the Shopify buying journey.
Vorhang Schweiz sells made-to-measure curtain and window solutions where customer dimensions are fundamental to the final product.
Pricing and configuration can depend on width, height, fabric, suspension, rail systems, tension rods, and related product-specific choices.
HeapByte developed custom Shopify logic that lets customers configure these products without forcing the merchant to maintain impossible variant combinations.
02What was in the way
- 01
Continuous measurements
Width and height values cannot realistically be represented as finite Shopify variants.
- 02
Product-specific logic
Different window products require different controls and pricing behavior.
- 03
Customer clarity
Complex configuration needs to remain understandable enough for shoppers to complete independently.
03Architecture
What we built, and what we deliberately left alone.
- 01
Custom configuration layer
Dimensions and options are collected outside Shopify's standard variant model.
- 02
Pricing logic
Selected measurements and attributes drive the calculated product price.
- 03
Shopify cart integration
Final configuration details carry into the commerce flow for fulfillment context.
Delivery
- Product-rule mapping
- Configurator development
- Dynamic pricing
- Theme integration
- Ongoing refinements
04Outcome
- Dimension model
- Dynamic
- Product categories
- Multiple
- Maintenance
- Ongoing
Width and height handled outside finite variants
Curtains, rails, rods and pleated-blind workflows
Configurator continues evolving with the merchant
05Engineering notes
- Dimension capture
- Numeric customer measurements become part of configuration and pricing state.
- Conditional controls
- Available configuration fields change according to product type and selected options.
- Price calculation
- Final price is calculated from business rules rather than a pre-generated matrix of variants.
- Cart properties
- Configuration details remain attached to the Shopify order for downstream processing.
What we took from it
- 01Continuous measurements are fundamentally different from product variants.
- 02Configurator UX should reflect how customers think about the physical product.
- 03Pricing logic benefits from separation from theme presentation.
- 04Long-lived custom tools need merchant-friendly configuration.
Disciplines applied
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