init...

themes/butterfly/scripts/helpers/series.js

@@ -0,0 +1,22 @@
+'use strict'
+
+hexo.extend.helper.register('groupPosts', function () {
+  const getGroupArray = array => {
+    const groups = {}
+    array.forEach(item => {
+      const Key = item.series
+      if (!Key) return
+      groups[Key] = groups[Key] || []
+      groups[Key].push(item)
+    })
+    return groups
+  }
+
+  const sortPosts = posts => {
+    const { orderBy = 'date', order = 1 } = this.theme.aside.card_post_series
+    if (orderBy === 'title') return posts.sort('title', order)
+    return posts.sort('date', order)
+  }
+
+  return getGroupArray(sortPosts(this.site.posts))
+})