Changelog

This document outlines the breaking changes introduced in the December 17, 2024 release of the Webflow Data API and JavaScript SDK. Review these changes carefully as they may require updates to your existing implementations.

Breaking changes in JavaScript SDK

Collection management

• Changed method name for deleting collections

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  // Old
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  client.collections.deleteCollection()
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  4
  // New
  5
  client.collections.delete(collectionId)

• New method for deleting collection fields

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  client.collections.deleteField(collectionId, fieldId)

CMS item creation

• Changed: client.collections.createItems() replaces previous methods
• Removed: client.collections.createItemForMultipleLocales()

Pages localization

• Changed parameter name: The locale query parameter is now localeId

Migration guide

Deleting collection items

If you’re using the existing collection deletion method, update your code to use the new method name:

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// Before
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await client.collections.deleteCollection(collectionId);
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4
// After
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await client.collections.delete(collectionId);

Collection item creation

Replace any usage of the deprecated methods with the new unified method:

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// Before (deprecated)
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await client.collections.createItemForMultipleLocales(collectionId, {
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  localeIds: [primaryCmsLocaleId, secondaryCmsLocaleId],
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  // other params
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});
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// After
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await client.collections.items.createItems(collectionId, {
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  cmsLocaleIds: [primaryCmsLocaleId, secondaryCmsLocaleId],
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  isArchived: false,
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  isDraft: false,
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  fieldData: {
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    // your fields here
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  },
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});

Page localization

Update any code that queries localized pages to use the new parameter name:

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// Before
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const pages = await client.pages.list({ locale: "507f1f77bcf86cd799439011" });
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4
// After
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const pages = await client.pages.list({ localeId: "507f1f77bcf86cd799439011" });

If you encounter any issues with these changes, please contact our support team for assistance.

SDK improvements

• Type improvements

  • Removed requirement for id in request payloads when creating resources
  • fieldData type in CMS Items now allows arbitrary key/value pairs, supporting custom fields

• Flexible CMS item creation The SDK now allows creation of CMS items with custom fields without requiring type updates