Library/models/book.go

53 lines
1.5 KiB
Go

package models
// Book holds a book
type Book struct {
ID int64 `xorm:"int(11) autoincr not null unique pk" json:"id"`
Title string `xorm:"varchar(250) not null" json:"title"`
Description string `xorm:"varchar(750)" json:"description"`
Isbn string `xorm:"varchar(30)" json:"isbn"`
Year int64 `xorm:"int(11)" json:"year"`
Price float64 `xorm:"double" json:"price"`
Status int64 `xorm:"int(11)" json:"status"`
PublisherID int64 `xorm:"int(11)" json:"publisherID"`
Created int64 `xorm:"created" json:"created"`
Updated int64 `xorm:"updated" json:"updated"`
Quantity int64 `xorm:"-" json:"quantity"`
Publisher Publisher `xorm:"-" json:"publisher"`
Authors []Author `xorm:"-" json:"authors"`
}
// TableName returns the name for the books table
func (Book) TableName() string {
return "books"
}
// GetBookByID gets a Book by its ID
func GetBookByID(ID int64) (book Book, exists bool, err error) {
// Get the Book
has, err := x.ID(ID).Get(&book)
if has {
// Get the books quantity. We can't join it because xorm ignores the Quantity option in struct
book.Quantity, err = book.getQuantity()
if err != nil {
return Book{}, false, err
}
// Get publisher. We can't join it because xorm ignores the PublisherID option in struct
book.Publisher, _, err = GetPublisherByID(book.PublisherID)
if err != nil {
return Book{}, false, err
}
// Get all authors
book.Authors, err = GetAuthorsByBook(book)
if err != nil {
return Book{}, false, err
}
}
return book, has, err
}