Fix sorting code for steps > 1

resources/assets/js/components/ColumnEditor.vue

@@ -193,17 +193,21 @@ export default {
       }
     },
 
-    /** Swap column in either direction (+1 or -1) */
+    /** Move a column (dir is positive or negative) */
     move (pos1, dir) {
       let pos2 = pos1 + dir
-      if (pos2 < 0 || pos2 >= this.columns.length) {
-        console.warn(`Attempted to move out of bounds (${pos1} -> ${pos2})`)
-        return;
+
+      // clamp
+      if (pos2 < 0) {
+        pos2 = 0
+      } else if (pos2 >= this.columns.length) {
+        pos2 = this.columns.length - 1
       }
-      let col1 = this.columns[pos1]
-      let col2 = this.columns[pos2]
-      this.$set(this.columns, pos1, col2)
-      this.$set(this.columns, pos2, col1)
+
+      let columns = this.columns
+      let col1 = columns.splice(pos1, 1)[0] // unwrap returned 1-element array
+      columns.splice(pos2, 0, col1)
+      this.columns = columns
     },
 
     /** Indicate a column is dirty and needs saving */