How to Use Regex Queries with the MongoDB Go Driver?

Performing Regex Queries with MongoDB-Go-Driver

This article addresses the issue of retrieving documents from a MongoDB collection using regex queries. While the MongoDB shell successfully executes these queries using patterns like "/he/", the go mongo driver has been reported to have issues.

The provided code sample demonstrates a query using the primitive.Regex structure. However, the issue lies in the incorrect usage of the pattern parameter. The documentation specifies that primitive.Regex expects a pattern without slashes, unlike the shell syntax.

Therefore, to retrieve documents where the text field contains "he," the pattern should be modified as follows:

<code class="go">filter := bson.D{{"text", primitive.Regex{Pattern: "he", Options: ""}}}</code>

By removing the slashes from the pattern, the query will successfully retrieve the expected documents. Remember to apply this adjustment to your code to ensure proper regex querying within the go mongo driver.

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