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gorm.go
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/
gorm.go
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package gormutil
import "strings"
const (
// DefaultLimit define the default number of records to be retrieved.
DefaultLimit = 15
ASC = "ASC"
DESC = "DESC"
)
// ListOptions contains offset and limit fields.
type ListOptions struct {
// Page
Page int `form:"page"`
// Offset
Offset int `form:"offset"`
// Limit
Limit int `form:"limit"`
// Order asc or desc.
Order string `form:"order"`
// Sort field.
Sort string `form:"sort"`
}
// SetDefaultOptions Set default options if not exist.
func (req *ListOptions) SetDefaultOptions() {
// Sort
if req.Sort == "" {
req.Sort = "id"
}
// Order
req.Order = strings.ToUpper(req.Order)
if req.Order != ASC {
req.Order = DESC
}
// Page size
if req.Limit <= 0 {
req.Limit = DefaultLimit
}
// Page
if req.Page <= 0 {
req.Page = 1
}
// Offset
if req.Offset == 0 && req.Page > 0 {
req.Offset = (req.Page - 1) * req.Limit
}
}