我如何使用 TOML fixtures 在使用 Go Buffalo 框架的开发环境中为我的数据库 seeder

要在数据库中设置种子，您可以使用欺诈.在创建新应用程序时，应该有一个以grifts/db.go为单位生成的虚拟占位符欺诈，如下所示:

package grifts

import "github.com/gobuffalo/grift/grift"

var _ = grift.Namespace("db", func() {

    grift.Desc("seed", "Seeds a database")
    grift.Add("seed", func(c *grift.Context) error {
        // Add DB seeding stuff here
        return nil
    })

})

我试图在诈骗中使用model.LoadFixture("seed widgets")，但有一些panic ，因为它不是在测试环境中.我认为不直接支持从Toml装置中进行DB种子设定，但这将是一个有用的特性.然而，查看来自LoadFixture的代码，我们可以构建我们自己的装置加载:

假设您有一个具有名为name = "seed widgets"的场景的灯具:

package grifts

import (
    "fmt"
    "os"
    "strings"

    "github.com/gobuffalo/grift/grift"
    "github.com/gobuffalo/suite/v4"
    "github.com/gobuffalo/suite/v4/fix"
)

var _ = grift.Namespace("db", func() {

    grift.Desc("seed", "Seeds a database")
    grift.Add("seed", func(c *grift.Context) error {
        // The DB connection will connect to the environment set in `GO_ENV` (defaults to `test`)
        // Set this environment variable in your `.env` file to `development`

        // NOTE: it may be better to put seed fixtures in a different directory
        //       to seperate concerns
        model, err := suite.NewModelWithFixtures(os.DirFS("./fixtures"))
        if err != nil {
            return err
        }

        sc, err := fix.Find("seed widgets")
        if err != nil {
            return err
        }

        for _, table := range sc.Tables {
            for _, row := range table.Row {
                q := "insert into " + table.Name
                keys := []string{}
                skeys := []string{}
                for k := range row {
                    keys = append(keys, k)
                    skeys = append(skeys, ":"+k)
                }

                q = q + fmt.Sprintf(" (%s) values (%s)", strings.Join(keys, ","), strings.Join(skeys, ","))
                if _, err = model.DB.Store.NamedExec(q, row); err != nil {
                    return err
                }
            }
        }

        return nil
    })

})