数据库操作

这一章节中我们学习数据的增，改，删。

Create

不验证

c, err := pop.Connect("development")
// [...]
fruit := &models.Fruit{}
// Create a fruit without running validations
err := c.Create(fruit)

验证

c, err := pop.Connect("development")
// [...]
fruit := &models.Fruit{}
// Run validations and create if all validations passed
vErrors, err := c.ValidateAndCreate(fruit)

更新

不验证

c, err := pop.Connect("development")
// [...]
fruit := &models.Fruit{}
// Update a fruit without running validations
err := c.Update(fruit)

验证

c, err := pop.Connect("development")
// [...]
fruit := &models.Fruit{}
// Run validations and update if all validations passed
vErrors, err := c.ValidateAndUpdate(fruit)

保存

save 方法会判断 对象的id是不是是零值。如果是零值就会调用create方法，如果不是零值就会调用update方法。

不验证

c, err := pop.Connect("development")
// [...]
fruit := &models.Fruit{ID: 0}
// Create a fruit without running validations
err := c.Save(fruit)

Copyc, err := pop.Connect("development")
// [...]
fruit := &models.Fruit{ID: 1}
// Update a fruit without running validations
err := c.Save(fruit)

验证

c, err := pop.Connect("development")
// [...]
fruit := &models.Fruit{ID: 0}
// Run validations and create if all validations passed
vErrors, err := c.ValidateAndSave(fruit)

Copyc, err := pop.Connect("development")
// [...]
fruit := &models.Fruit{ID: 1}
// Run validations and update if all validations passed
vErrors, err := c.ValidateAndSave(fruit)

删除

c, err := pop.Connect("development")
// [...]
fruit := &models.Fruit{ID: 1}
// Destroy the fruit
err := c.Destroy(fruit)