How to Build Custom CMS Input Components
AdvancedQuick Answer
TL;DR
Build custom CMS input components by writing React (or framework-specific) components that receive the current field value and an `onChange` callback from the CMS data layer. Use these for specialized data types — color pickers, map selectors, brand-specific editors — where the default text or number input doesn't fit the data shape. The component handles UI; the CMS handles persistence.
Key Takeaways
- Custom inputs receive `value` and `onChange` (or equivalent) props from the CMS — your component is responsible only for the UI layer
- The component must call `onChange` with the correct data shape for the field type — mismatched shapes cause silent data corruption
- Custom inputs in Sanity Studio are standard React components, making the full React ecosystem (hooks, libraries, context) available