Data Management

Remove a Single Item From an Object Array

Summary

Welcome to this step-by-step guide on how to remove items from an object array in your database records using Xano. In this article, we'll walk you through the process of retrieving a record, updating its object array by removing a specific item, and then updating the record in the database. Let's get started!

Step 1: Get the Record

Before we can update the record, we need to retrieve it from the database first. We can use the `get record` function to fetch the record based on a specific field or a combination of fields.

javascript let merchantRecord = await xano.db.get_record('Table_Name', 'merchant_id', 'Value');

Replace `'Table_Name'` with the name of your database table, `'merchant_id'` with the field you want to use for fetching the record, and `'Value'` with the corresponding value.

Alternatively, you can use the `query_all_records` function to retrieve multiple records and then use the `return_single` option to get a specific record based on a condition.

Step 2: Update the Object Array

Once we have the record, we need to update the object array that contains the items we want to remove. We'll create a new variable that holds the updated array.

javascript let updatedMerchantRecord = { ...merchantRecord, items: merchantRecord.items.filter(removeItem) };

In this example, we're using the `filter` method along with a custom function `removeItem` to create a new array that excludes the item we want to remove.

The `removeItem` function takes two parameters: `value` and `path`. The `value` parameter represents the item you want to remove, and the `path` parameter specifies the property within the object that should match the `value`.

javascript function removeItem(obj, value, path = 'title') { return obj[path] !== value; }

Replace `'title'` with the property name of the object that you want to use for matching the `value`.

Step 3: Update the Record in the Database

After updating the object array, we can use the `edit_record` function to update the record in the database with the new array.

javascript await xano.db.edit_record('Table_Name', 'merchant_id', 'Value', { items: updatedMerchantRecord.items });

Replace `'Table_Name'`, `'merchant_id'`, and `'Value'` with the appropriate values for your database table and the record you want to update.

That's it! You've successfully removed an item from an object array in your database record using Xano. Remember, this is just one example, and you can adapt the code to fit your specific use case and data structure.

By following this guide, non-technical users and developers alike can leverage Xano's no-code capabilities to build and maintain robust backend services efficiently. Happy coding!

This transcript was AI generated to allow users to quickly answer technical questions about Xano.

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