Updating Multiple Records

Updating multiple records can be very similar to updating single records. In updating a single record you have to use the Where function to narrow down your record set. Here, you may need to use that, or you may need to use the All function as below. Since using the Where function has been demonstrated we'll show the All function.

package main

import (
    "bitbucket.org/pop-book/models"
    "fmt"
    "github.com/gobuffalo/pop"
    "log"
)

func main() {
    tx, err := pop.Connect("development")
    if err != nil {
        log.Panic(err)
    }

    users := []models.User{}
    err = tx.All(&users)
    if err != nil {
        fmt.Print("ERROR!\n")
        fmt.Printf("%v\n", err)
    } else {
        for i := 0; i < len(users); i++ {
            user := users[i]
            user.Location = "NYC, NY"
            tx.ValidateAndSave(&user)
            fmt.Print("Success!\n")
            fmt.Printf("%v\n", user)
        }
    }
}

Compile and run:

$ ./main
Success!
{"id":"bf3ba75b-8dfe-4619-b832-31c4a087a589","created_at":"2017-12-19T14:06:20.473953-05:00","updated_at":"2017-12-28T21:50:00.094151-05:00","title":"Ms.","first_name":"Jessica","last_name":"Jones","bio":"Private security, super hero.","location":"NYC, NY"}
Success!
{"id":"61b2db41-a66b-4093-8580-be0b114ec04e","created_at":"2017-12-19T14:06:20.476127-05:00","updated_at":"2017-12-28T21:50:00.096033-05:00","title":"Mr.","first_name":"Luke","last_name":"Cage","bio":"Hero for hire.","location":"NYC, NY"}
Success!
{"id":"d86df65e-2bf8-4bec-9b23-8d7b274a401a","created_at":"2017-12-19T14:06:20.476837-05:00","updated_at":"2017-12-28T21:50:00.096708-05:00","title":"Mr.","first_name":"Danny","last_name":"Rand","bio":"Martial artist.","location":"NYC, NY"}
Success!
{"id":"bd73c1a3-0259-4e0a-a3b2-232cf94b52ff","created_at":"2017-12-19T14:06:20.47763-05:00","updated_at":"2017-12-28T21:50:00.097364-05:00","title":"Mr.","first_name":"Matthew","last_name":"Murdock","bio":"Lawyer, sees with no eyes.","location":"NYC, NY"}
Success!
{"id":"240ec3c5-019d-4031-9c27-8a553e022297","created_at":"2017-12-19T14:06:20.478384-05:00","updated_at":"2017-12-28T21:50:00.098018-05:00","title":"Mr.","first_name":"Frank","last_name":"Castle","bio":"USMC, badass.","location":"NYC, NY"}