bug: fix

models/message/cmscase.go

 // GetCmsCaseImgs 根据项目专题ID获取课程图片
 func (m *MessageDAO) GetCmsCaseImgs(cmscaseid string) ([]model.TaCmsCaseImage, error) {
 	var imgs []model.TaCmsCaseImage
-	err := m.db.Where("cms_case_id=?", cmscaseid).And("status>" + strconv.Itoa(models.STATUS_DEL)).Find(&imgs)
+	err := m.db.Where("cms_case_id=?", cmscaseid).And("status>" + strconv.Itoa(models.STATUS_DEL)).Asc("sort").Find(&imgs)
 	return imgs, err
 }