iris/_examples/database/mysql/entity/category.go
Gerasimos (Makis) Maropoulos ed45c77be5 reorganization of _examples and add some new examples such as iris+groupcache+mysql+docker
Former-commit-id: ed635ee95de7160cde11eaabc0c1dcb0e460a620
2020-06-07 15:26:06 +03:00

90 lines
2.2 KiB
Go

package entity
import (
"database/sql"
"time"
)
// Category represents the categories entity.
// Each product belongs to a category, see `Product.CategoryID` field.
// It implements the `sql.Record` and `sql.Sorted` interfaces.
type Category struct {
ID int64 `db:"id" json:"id"`
Title string `db:"title" json:"title"`
Position uint64 `db:"position" json:"position"`
ImageURL string `db:"image_url" json:"image_url"`
// We could use: sql.NullTime or unix time seconds (as int64),
// note that the dsn parameter "parseTime=true" is required now in order to fill this field correctly.
CreatedAt *time.Time `db:"created_at" json:"created_at"`
UpdatedAt *time.Time `db:"updated_at" json:"updated_at"`
}
// TableName returns the database table name of a Category.
func (c *Category) TableName() string {
return "categories"
}
// PrimaryKey returns the primary key of a Category.
func (c *Category) PrimaryKey() string {
return "id"
}
// SortBy returns the column name that
// should be used as a fallback for sorting a set of Category.
func (c *Category) SortBy() string {
return "position"
}
// Scan binds mysql rows to this Category.
func (c *Category) Scan(rows *sql.Rows) error {
c.CreatedAt = new(time.Time)
c.UpdatedAt = new(time.Time)
return rows.Scan(&c.ID, &c.Title, &c.Position, &c.ImageURL, &c.CreatedAt, &c.UpdatedAt)
}
// Categories a list of categories. Implements the `Scannable` interface.
type Categories []*Category
// Scan binds mysql rows to this Categories.
func (cs *Categories) Scan(rows *sql.Rows) (err error) {
cp := *cs
for rows.Next() {
c := new(Category)
if err = c.Scan(rows); err != nil {
return
}
cp = append(cp, c)
}
if len(cp) == 0 {
return sql.ErrNoRows
}
*cs = cp
return rows.Err()
}
/*
// The requests.
type (
CreateCategoryRequest struct {
Title string `json:"title"` // all required.
Position uint64 `json:"position"`
ImageURL string `json:"imageURL"`
}
UpdateCategoryRequest CreateCategoryRequest // at least 1 required.
GetCategoryRequest struct {
ID int64 `json:"id"` // required.
}
DeleteCategoryRequest GetCategoryRequest
GetCategoriesRequest struct {
// [limit, offset...]
}
)*/