如何解决：Golang的“附加”方法将相同元素推切

Question

I'm trying to map data from DB ( Mongo ) to slice in go , and everythin works fine if I'm returning simple []string but if I change type to []*models.Organization that code returns slice of same elements.

func (os *OrganizationService) GetAll() ([]*models.Organization, error) {
    var organizations []*models.Organization
    results := os.MongoClient.Collection("organizations").Find(bson.M{})
    organization := &models.Organization{}
    for results.Next(organization) {
        fmt.Println(organization)
        organizations = append(organizations, organization)
    }
    return organizations, nil
}

I expect output [{ Name: "someOrg", ID: "someId" },{ Name: "someOrg2", ID: "someID }, ... ] , but actual output is [{ Name: "someOrg", ID: "someId" },{ Name: "someOrg", ID: "someId" }, ... ]

I'm using bongo package.

Answer 1

The application appends the same value of organization on every iteration through the loop. Fix by creating a new value inside the loop.

func (os *OrganizationService) GetAll() ([]*models.Organization, error) {
    var organizations []*models.Organization
    results := os.MongoClient.Collection("organizations").Find(bson.M{})
    organization := &models.Organization{}
    for results.Next(organization) {
        fmt.Println(organization)
        organizations = append(organizations, organization)
        organization = &models.Organization{} // new value for next iteration
    }
    return organizations, nil
}