addItems

await collection.addItems([
    {
        id: "1",
        slug: "item-1",
        fieldData: {
            [nameField.id]: { type: "string", value: "Eric" },
            [ageField.id]: { type: "number", value: 47 },
            [aboutField.id]: {
              type: "formattedText",
              value: "Practicing **Competitive** Lawn Mowing",
              contentType: "markdown" // other values can be: "html" (default), or "auto"
            }
        },
    },
])

Important: currently, calling addItems with existing item ids merges the provided field data with the existing items' current field data, meaning any omitted fields remain unchanged.

In version 4.0.0, this behavior will change - calling addItems with existing item ids will fully replace those items with the provided field data, meaning any fields not explicitly included will be removed. For example, if you initially add an item with a name field and an age field, and later call addItems again with the same id but only provide the name field, the previously set age field will be removed.

To avoid unexpected behaviour when migrating between 3.X.X and 4.0.0, always include all fields when updating existing items.

Parameters

• items: ManagedCollectionItemInput[] – An array of Items to add or update.

Returns

• Promise<void>