Embedding a Child Database within a Notion API Page

Other Questions Notion
1

I’m building a Notion API page, but embedding a child database block triggers a 400 error. See the updated sample code below:

const requestData = {
  parent: { page_id: 'mainPageId' },
  properties: {
    Title: { title: [{ text: { content: 'My Shopping Page' } }] }
  },
  children: [
    {
      object: 'block',
      type: 'child_database',
      child_database: {
        title: 'Shopping Database',
        properties: {
          Product: { type: 'title', title: [{ text: { content: 'Oranges' } }] }
        }
      }
    }
  ]
};

async function submitPage() {
  const res = await fetch('https://api.notion.com/v1/pages', {
    method: 'POST',
    headers: {
      'Authorization': 'Bearer secret_KEY',
      'Content-Type': 'application/json',
      'Notion-Version': '2021-08-16'
    },
    body: JSON.stringify(requestData)
  });
  console.log(await res.json());
}

submitPage();
2

hey, i’ve seen this before. turns out, missing or misordered fields in the child database block can trigger the 400 error. check if you’re using the latest api spec and field names exactly. hope this gives u a clue!

3

I faced a similar issue and found that the problem wasn’t just with the field names but often with the way nested properties were structured. In my case, reordering the keys and ensuring each block was defined exactly as the latest docs specified made a difference. It turns out, even minor discrepancies in the arrangement of properties can lead to unexpected 400 errors. Indeed, I had to perform thorough step-by-step testing, sometimes modifying one element at a time, to finally identify the source of the error. This process helped me ensure strict compliance with the API schema.

4

My investigation revealed that in certain cases, attempting to create a child database block simultaneously with a new page can lead to unexpected conflicts within the Notion API. I resolved this by first creating the page and then adding the child database block through a separate update call. This two-step procedure circumvents the internal conflict that sometimes arises when both operations are combined. I noticed that this approach delivers more consistent results and promised stability compared to trying to embed the child database directly during page creation.

5

I encountered similar issues when trying to embed a child database block using the Notion API. In my case, the error was more about the API version being used. Notion has been updating its API and some block types need a different approach in newer versions. I switched to the most recent version and ensured my request structure adhered to their updated documentation, which resolved the 400 error. Double-checking details like correct field names and required properties for the child database block was key in my experience.

6

My experience with embedding a child database into a Notion page revealed that errors often stem from structural mismatches rather than just version differences. I discovered that even minor deviations in expected field values or the organization of nested properties can trigger a 400 error. Simultaneously creating a page along with a child database block may compound these issues. I resolved problems by aligning my request exactly with the latest API documentation and testing step-by-step to pinpoint the discrepancy. A methodical review of the schema specifications is essential.