add method for setting tag

src/server/models/tag.js

@@ -105,7 +105,7 @@ class Tag {
   // }
 
   // タグ生成
-  static create(name) {
+  static createTag(name) {
     return this.create({name: name});
   }
 }

src/server/routes/page.js

@@ -6,6 +6,7 @@ module.exports = function(crowi, app) {
     , pagePathUtils = require('@commons/util/page-path-utils')
     , Page = crowi.model('Page')
     , User = crowi.model('User')
+    , Tag = crowi.model('Tag')
     , Config   = crowi.model('Config')
     , config   = crowi.getConfig()
     , Bookmark = crowi.model('Bookmark')
@@ -105,6 +106,10 @@ module.exports = function(crowi, app) {
     }
   }
 
+  function updateTags(page, user, pageTags, updateOrCreate, previousRevision) {
+    Tag.createTag(pageTags);
+  }
+
   function addRendarVarsForPage(renderVars, page) {
     renderVars.page = page;
     renderVars.path = page.path;
@@ -654,6 +659,11 @@ module.exports = function(crowi, app) {
     if (isSlackEnabled && slackChannels != null) {
       await notifyToSlackByUser(page, req.user, slackChannels, 'update', previousRevision);
     }
+
+    // set page tag
+    if (pageTags != null) {
+      await updateTags(page, req.user, pageTags, 'update', previousRevision);
+    }
   };
 
   /**