【优化】教程分类以及教程

src/main/resources/mapper/TutorialMapper.xml

@@ -11,14 +11,16 @@
         <result column="view_count" property="viewCount"/>
         <result column="recommend_status" property="recommendStatus"/>
         <result column="status" property="status"/>
+        <result column="lang" property="lang"/>
         <result column="category_title" property="categoryTitle"/>
+        <result column="category_id" property="categoryId"/>
         <result column="create_time" property="createTime"/>
         <result column="update_time" property="updateTime"/>
     </resultMap>
 
     <!-- 基础查询SQL片段 -->
     <sql id="selectVOSql">
-        select c.*, cc.category_title
+        select c.*, cc.category_title, cc.id as category_id
             from app_tutorial c
         left join app_tutorial_category_relation ccr on c.id = ccr.tutorial_id
         left join app_tutorial_category cc on cc.id = ccr.category_id
@@ -36,9 +38,28 @@
             <if test="tutorialTitle != null and tutorialTitle != ''">
                 AND c.tutorial_title like CONCAT('%', #{tutorialTitle}, '%')
             </if>
-
         </where>
         ORDER BY c.recommend_status,c.create_time asc
     </select>
 
+    <!-- 分页查询 -->
+    <select id="page" resultMap="VOResultMap">
+        <include refid="selectVOSql"/>
+        <where>
+            <if test="tutorial.categoryId != null and tutorial.categoryId != 0">
+                AND cc.id = #{tutorial.categoryId}
+            </if>
+            <if test="tutorial.tutorialTitle != null and tutorial.tutorialTitle != ''">
+                AND c.tutorial_title like CONCAT('%', #{tutorial.tutorialTitle}, '%')
+            </if>
+            <if test="tutorial.lang != null and tutorial.lang != ''">
+                AND c.lang = #{tutorial.lang}
+            </if>
+            <if test="tutorial.status != null">
+                AND c.status = #{tutorial.status}
+            </if>
+
+        </where>
+    </select>
+
 </mapper>