How to Find Emails in a JSON Column with Laravel\'s whereJsonContains: Why Doesn\'t `->` Work and What\'s the Solution?

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Finding Emails in a JSON Column with Laravel

Laravel provides powerful tools for working with JSON databases, allowing developers to store and retrieve complex data efficiently. One common task is searching within a JSON column, which can be challenging due to the nature of JSON data.

The Problem: JsonContains Query Doesn't Match

In the example provided, the user is trying to retrieve emails with a specific address from a table with a JSON column. However, the query using whereJsonContains is not returning any results. This is because JSON subqueries cannot use the arrow operator ("->") in array contexts.

Solution: Using Arrays in Queries

To search within a JSON array, Laravel requires the use of arrays in the query. The "whereJsonContains" method takes an array as the second parameter, with each element representing a matching criterion.

In this case, the correct query would be:

<code class="php">DB::table('emails')
    ->whereJsonContains('to', [['emailAddress' => ['address' => '[email&#160;protected]']]])
    ->get();</code>

By using an array in the subquery, Laravel can correctly search for emails with the specified address. This addresses the problem where the arrow operator doesn't work in arrays and ensures that the query matches the desired results.

This approach allows developers to effectively retrieve data from complex JSON columns, making it a valuable tool for working with JSON databases in Laravel applications.

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