🎨 优化model

repository/problem.go

@@ -19,6 +19,10 @@ func (problemService) GetList(p param.GetProblemList) (records entity.Problem, c
 	if p.Keyword != "" {
 		sel.Where("title LIKE ? OR content like ?", "%"+p.Keyword+"%", "%"+p.Keyword+"%")
 	}
+	if p.CategoryIdentity != "" {
+		sel.Joins("RIGHT JOINN problem_category pc on pc.problem_id = problem.id").
+			Where("pc.category_id= (SELECT cb.id FROM category cb WHERE cb.identity = ?)", p.CategoryIdentity)
+	}
 
 	err = sel.Order("updated_at DESC").Find(&records).Offset(-1).Limit(-1).Count(&count).Error
 	return