How to Create a Singleton DB Instance with Exported Methods in Go?

How to Create Singleton DB Instance with Exported Methods

Problem

The code provided does not allow for methods to be accessed on the singleton DB instance. Users aim to define methods in the singleton and call them on their singleton reference.

Solution

To create a singleton DB instance with exported methods, follow this modified code:

Using this solution:

• The Manager interface defines the exported methods that clients can access.
• The manager struct implements the interface.
• An exported global variable Mgr of type Manager is initialized using an init() function to ensure it is done only once.
• Clients can use Mgr to call methods on the singleton DB instance, such as AddArticle.

Exception Handling

To catch and return exceptions from gorm.Create(), modify the AddArticle method as follows:

The above is the detailed content of How to Create a Singleton DB Instance with Exported Methods in Go?. For more information, please follow other related articles on the PHP Chinese website!