Ideal Postcodes
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WooCommerce 4: Block Checkout Support

WooCommerce 4 is the new major release of our WooCommerce plugin, adding support for the block-based checkout. The postcode lookup is rebuilt as an isolated web component so it no longer interferes with checkout form validation. Requires WooCommerce 8 or above; legacy shortcode checkout is no longer supported.

Details

  • Block checkout: Postcode Lookup and Address Autocomplete work natively in the block-based checkout
  • Isolated web component: The rebuilt postcode lookup no longer blocks order submission by clashing with form validation
  • Country-aware validation: A new toggle switches off address validation automatically when the customer selects an unsupported country
  • Dedicated Address Finder field: Optionally render the address search in its own field
  • JSON configuration overrides: Fine-tune Postcode Lookup and Address Autocomplete behaviour directly from the Advanced settings tab
  • Validation controls: Address line one character limit (default 40), transliteration of accented characters to ASCII, ASCII-only input, automatic company name population, and PO Box blocking

Find the settings under WooCommerce > Settings > Integration > UK Address Postcode Validation. Full setup in the WooCommerce integration docs.