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Access a Value

Atlas App Services has reached its end-of-life status and is no longer actively supported by MongoDB. Triggers remain available in the Atlas UI. Refer to the deprecation page for details.

Overview

You can access an Atlas App Services Value from a rule expression or an Atlas Function.

Usage

Reference a Value in a JSON Expression

You can access a Value's stored data from a JSON expression using the %%values expansion.

"%%values.<Value Name>"

Example

The following JSON expression evaluates to true when the active user's id is included in the plain text array Value adminUsers:

{ "%%user.id": { "$in": "%%values.adminUsers" } }

Reference a Value in a Function

You can access a Value's stored data from a Function using the context.values module.

context.values.get("<Value Name>")

Example

The following Function returns true when the active user's id is included in the plain text array Value adminUsers:

exports = function() {
    const adminUsers = context.values.get("adminUsers");
    const isAdminUser = adminUsers.indexOf(context.user.id) > 0;
    return isAdminUser;
}

Tip

Reference an Environment Variable

Trying to access an environment variable? Check out the function context documentation for more info on context.environment.values.

Summary

You can access an App Services Value from a rule expression or from an Atlas Function.

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Define Data Access Permissions