pm/models/courses.go

package models

import (
	"errors"
	"zhiyuan/pkg/db"
)

type Courses struct {
	ID        int    `json:"id"`
	CourseId  int    `json:"course_id"`
	Name      string `json:"name"`
	Type      int    `json:"type"`
	Content   string `json:"content"`
	Orders    int    `json:"orders"`
	CreatedAt int    `json:"created_at"`
	UpdatedAt int    `json:"updated_at"`
}

func (Courses) TableName() string {
	return "zy_courses"
}

func (a Courses) GetOne(where map[string]interface{}, fields []string, retVal interface{}) (*Courses, error) {
	if retVal == nil {
		var courses *Courses
		err := db.GetOne(a.TableName(), where, fields, &courses)
		return courses, err
	} else {
		err := db.GetOne(a.TableName(), where, fields, retVal)
		return nil, err
	}
}

func (a Courses) GetMulti(where map[string]interface{}, fields []string, retVal interface{}) ([]*Courses, error) {
	if retVal == nil {
		var courses []*Courses
		err := db.GetMulti(a.TableName(), where, fields, &courses)
		return courses, err
	} else {
		err := db.GetMulti(a.TableName(), where, fields, retVal)
		return nil, err
	}
}

func (a Courses) GetOneRaw(where map[string]string, param map[string]interface{}, retVal interface{}) (*Courses, error) {
	courses, err := a.GetMultiRaw(where, param, retVal)
	if err != nil {
		return nil, err
	}
	if len(courses) == 0 {
		return nil, errors.New("empty record2")
	}
	return courses[0], nil
}

func (a Courses) GetMultiRaw(where map[string]string, param map[string]interface{}, retVal interface{}) ([]*Courses, error) {
	field := "SELECT * FROM zy_courses "
	if retVal == nil {
		var courses []*Courses
		err := db.GetMultiRaw(field, where, param, &courses)
		return courses, err
	} else {
		err := db.GetMultiRaw(field, where, param, retVal)
		return nil, err
	}
}