hldrCenter/server/internal/course_teacher/internal/model/courseteachermodel_gen.go

// Code generated by goctl. DO NOT EDIT.
// versions:
//  goctl version: 1.9.1

package model

import (
	"context"
	"database/sql"
	"fmt"
	"strings"

	"github.com/zeromicro/go-zero/core/stores/builder"
	"github.com/zeromicro/go-zero/core/stores/sqlx"
	"github.com/zeromicro/go-zero/core/stringx"
)

var (
	courseTeacherFieldNames          = builder.RawFieldNames(&CourseTeacher{})
	courseTeacherRows                = strings.Join(courseTeacherFieldNames, ",")
	courseTeacherRowsExpectAutoSet   = strings.Join(stringx.Remove(courseTeacherFieldNames, "`id`", "`create_at`", "`create_time`", "`created_at`", "`update_at`", "`update_time`", "`updated_at`"), ",")
	courseTeacherRowsWithPlaceHolder = strings.Join(stringx.Remove(courseTeacherFieldNames, "`id`", "`create_at`", "`create_time`", "`created_at`", "`update_at`", "`update_time`", "`updated_at`"), "=?,") + "=?"
)

type (
	courseTeacherModel interface {
		Insert(ctx context.Context, data *CourseTeacher) (sql.Result, error)
		FindOne(ctx context.Context, id int64) (*CourseTeacher, error)
		Update(ctx context.Context, data *CourseTeacher) error
		Delete(ctx context.Context, id int64) error
		CountByConditions(ctx context.Context, courseId int64) (int64, error)
		FindByConditionsWithPage(
			ctx context.Context,
			courseId int64,
			pageSize, offset int,
		) ([]*CourseTeacher, error)
	}

	defaultCourseTeacherModel struct {
		conn  sqlx.SqlConn
		table string
	}

	CourseTeacher struct {
		Id        int64          `db:"id"`         // 关联ID（主键，自增）
		CourseId  int64          `db:"course_id"`  // 关联课程ID
		TeacherId int64          `db:"teacher_id"` // 教师ID（关联用户表user.id）
		Name      string         `db:"name"`       // 教师姓名
		Title     string         `db:"title"`      // 教师头衔（如“XXX大学教授”）
		Avatar    string         `db:"avatar"`     // 教师头像URL
		Intro     sql.NullString `db:"intro"`      // 教师简介
		Sort      int64          `db:"sort"`       // 排序（团队展示顺序，数值越小越靠前）
	}
)

func newCourseTeacherModel(conn sqlx.SqlConn) *defaultCourseTeacherModel {
	return &defaultCourseTeacherModel{
		conn:  conn,
		table: "`course_teacher`",
	}
}

func (m *defaultCourseTeacherModel) Delete(ctx context.Context, id int64) error {
	query := fmt.Sprintf("delete from %s where `id` = ?", m.table)
	_, err := m.conn.ExecCtx(ctx, query, id)
	return err
}

func (m *defaultCourseTeacherModel) FindOne(ctx context.Context, id int64) (*CourseTeacher, error) {
	query := fmt.Sprintf("select %s from %s where `course_id` = ? limit 1", courseTeacherRows, m.table)
	var resp CourseTeacher
	err := m.conn.QueryRowCtx(ctx, &resp, query, id)
	switch err {
	case nil:
		return &resp, nil
	case sqlx.ErrNotFound:
		return nil, ErrNotFound
	default:
		return nil, err
	}
}

func (m *defaultCourseTeacherModel) Insert(ctx context.Context, data *CourseTeacher) (sql.Result, error) {
	query := fmt.Sprintf("insert into %s (%s) values (?, ?, ?, ?, ?, ?, ?)", m.table, courseTeacherRowsExpectAutoSet)
	ret, err := m.conn.ExecCtx(ctx, query, data.CourseId, data.TeacherId, data.Name, data.Title, data.Avatar, data.Intro, data.Sort)
	return ret, err
}

func (m *defaultCourseTeacherModel) Update(ctx context.Context, data *CourseTeacher) error {
	query := fmt.Sprintf("update %s set %s where `id` = ?", m.table, courseTeacherRowsWithPlaceHolder)
	_, err := m.conn.ExecCtx(ctx, query, data.CourseId, data.TeacherId, data.Name, data.Title, data.Avatar, data.Intro, data.Sort, data.Id)
	return err
}

func (m *defaultCourseTeacherModel) CountByConditions(ctx context.Context, courseId int64) (int64, error) { // 移除teacherId参数
	var count int64
	baseQuery := fmt.Sprintf("select count(*) from %s", m.table)

	var whereClauses []string
	var args []interface{}

	// 只保留course_id的筛选（如果需要），删除teacher_id的筛选逻辑
	if courseId > 0 {
		whereClauses = append(whereClauses, "`course_id` = ?")
		args = append(args, courseId)
	}

	if len(whereClauses) > 0 {
		baseQuery += " where " + strings.Join(whereClauses, " and ")
	}

	err := m.conn.QueryRowCtx(ctx, &count, baseQuery, args...)
	return count, err
}
func (m *defaultCourseTeacherModel) FindByConditionsWithPage(
	ctx context.Context,
	courseId int64, // 移除teacherId参数
	pageSize, offset int,
) ([]*CourseTeacher, error) {
	var teachers []*CourseTeacher
	baseQuery := fmt.Sprintf("select %s from %s", courseTeacherRows, m.table)

	var whereClauses []string
	var args []interface{}

	// 只保留course_id的筛选（如果需要），删除teacher_id的筛选逻辑
	if courseId > 0 {
		whereClauses = append(whereClauses, "`course_id` = ?")
		args = append(args, courseId)
	}

	// 分页参数
	pageQuery := " order by `sort` asc limit ?, ?"
	args = append(args, offset, pageSize)

	if len(whereClauses) > 0 {
		baseQuery += " where " + strings.Join(whereClauses, " and ") + pageQuery
	} else {
		baseQuery += pageQuery
	}

	err := m.conn.QueryRowsCtx(ctx, &teachers, baseQuery, args...)
	if err != nil {
		return nil, err
	}
	return teachers, nil
}
func (m *defaultCourseTeacherModel) tableName() string {
	return m.table
}