How Can I Execute JavaScript Expressions Within MongoDB Document Fields?

Evaluating JavaScript Expressions in MongoDB Document Fields

Inserting a dynamically assigned value to a field in a MongoDB document can be achieved through server-side code execution. However, the presented code snippet stores a script instead of executing it.

According to MongoDB documentation, server-side functions can be stored in the special collection system.js.

Using Stored Procedures:

To call a stored procedure from Go using the mgo driver, utilize the Run() method of the mgo.Database type. Issue an eval command with the JavaScript code to be executed server-side as an argument:

db.Run(bson.M{"eval": "myStoredFunction();"})

Code Embedding Limitations:

It's important to note that embedding JavaScript code directly in an insert statement is not supported in MongoDB. Instead, use stored procedures or other techniques for executing server-side code.

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