How do I fix: 🛑 Root Causes of the Error?

Using find method without specifying the relation can lead to an exception when there are missing IDs.

How do I fix: Method 2: Using includes?

Step 1: Use the :include option in your query, like this: Comment.includes(:user).find(ids).

Coding⏱️ 2 min read📅 2026-05-31

Step 1: Replace find with find_or_all_by_ids in your code, like this: Comment.find_or_all_by_ids(ids).

Find comments by IDs without exceptions in Rails ActiveRecord.

Quick Answer: Use `find_or_initialize` or `first_or_create` to avoid exceptions when finding non-existent records.

📋 Table of Contents

To avoid this exception, you can use the find_or_all_by_ids method provided by Rails.

Using find method without specifying the relation can lead to an exception when there are missing IDs.

Step 1: Replace find with find_or_all_by_ids in your code, like this: Comment.find_or_all_by_ids(ids).

Step 1: Use the :include option in your query, like this: Comment.includes(:user).find(ids).

By using one of these methods, you can avoid the exception and retrieve only the comments that belong to the given user.

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