How Can I Efficiently Handle JSONB Data in Gorm Without Using postgres.Jsonb?

Using JSONB with Gorm and Postgres Without postgres.Jsonb

When working with Postgres in Golang, it is often necessary to manipulate JSONB data types. Gorm, an ORM (Object-Relational Mapping) library for Go, provides a convenient API for interacting with databases. However, its default approach for handling JSONB requires using the dedicated postgres.Jsonb type.

To avoid using this type directly in models, consider utilizing pgtype.JSONB instead. This type is offered by the pgtype package, which is a companion library to pgx, Gorm's underlying driver. pgtype provides a more flexible and efficient way to work with JSONB data.

Implementation

In your Go struct, define a field for storing the JSONB data as follows:

type User struct {
    gorm.Model
    Data pgtype.JSONB `gorm:"type:jsonb;default:'[]';not null"`
}

Reading and Writing JSONB Data

To retrieve JSONB data from the database:

u := User{}
db.Find(&u)

var data []string

err := u.Data.AssignTo(&data)
if err != nil {
    // Handle error
}

To set JSONB data for an update:

u := User{}

err := u.Data.Set([]string{"abc", "def"})
if err != nil {
    // Handle error
}

db.Updates(&u)

Using pgtype.JSONB offers a better alternative to manipulating JSONB data in Gorm. By using the type directly, you avoid the limitations and potential complications of working with postgres.Jsonb.

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