Fixes #67

Author: velopert

velog-backend/src/database/rawQuery/series.js

@@ -26,3 +26,25 @@ export const getSeriesPostCountList = async (
     throw e;
   }
 };
+
+export const subtractIndexes = async (
+  seriesId: string,
+  from: number,
+): Promise<any> => {
+  const query = `update series_posts
+set index = index - 1
+where fk_series_id = $seriesId
+and index > $from`;
+  try {
+    const result = await db.query(query, {
+      type: Sequelize.QueryTypes.BULKUPDATE,
+      bind: {
+        seriesId,
+        from,
+      },
+    });
+    return result;
+  } catch (e) {
+    throw e;
+  }
+};

velog-backend/src/router/posts/post/post.ctrl.js

@@ -22,6 +22,7 @@ import {
 } from 'database/models';
 import redisClient from 'lib/redisClient';
 import UrlSlugHistory from 'database/models/UrlSlugHistory';
+import { subtractIndexes } from 'database/rawQuery/series';
 
 export const checkPostExistancy = async (
   ctx: Context,
@@ -224,15 +225,16 @@ export const updatePost = async (ctx: Context): Promise<*> => {
     if (seriesPost) {
       if (seriesPost.series.id !== series_id) {
         seriesPost.destroy();
+        subtractIndexes(seriesPost.series.id, seriesPost.index);
         if (!series_id) {
           series = null;
         } else {
           await SeriesPosts.append(series_id, id, ctx.user.id);
         }
       }
-    } /* else {
+    } else if (series_id) {
       await SeriesPosts.append(series_id, id, ctx.user.id);
-    } */
+    }
   } catch (e) {
     ctx.throw(500, e);
   }
@@ -347,6 +349,15 @@ export const deletePost = async (ctx: Context): Promise<*> => {
       db.getQueryInterface().bulkDelete('posts_tags', { fk_post_id: post.id }),
       db.getQueryInterface().bulkDelete('post_likes', { fk_post_id: post.id }),
     ]);
+    const seriesPost = await SeriesPosts.findOne({
+      where: {
+        fk_post_id: post.id,
+      },
+    });
+    if (seriesPost) {
+      subtractIndexes(seriesPost.fk_series_id, seriesPost.index);
+      seriesPost.destroy();
+    }
     await post.destroy();
     redisClient.remove(`/@${ctx.user.username}/${ctx.post.url_slug}`);
     ctx.status = 204;

velog-frontend/src/components/post/PostSeriesInfo/PostSeriesInfo.js

@@ -74,7 +74,9 @@ class PostSeriesInfo extends Component<Props, State> {
             {index}/{length}
           </div>
         </div>
-        <h2>{this.props.series.name}</h2>
+        <h2>
+          <Link to={`/@${username}/series/${series.url_slug}`}>{this.props.series.name}</Link>
+        </h2>
         {open && (
           <ol>
             {list.map(item => (