Precise fields for Block selection

routes/index.js

@@ -6,6 +6,7 @@ var router = express.Router();
 router.get('/', async function(req, res, next) {
 
   const blocks = await models.Block.findAll({
+    attributes: ['height', 'hash'],
     order: [['height', 'DESC']],
     limit: 30,
   });

routes/search.js

@@ -16,6 +16,7 @@ router.post('/', async function(req, res, next) {
   const blockIndex = parseInt(search);
   if (isNaN(blockIndex) === false && blockIndex.toString() === search) {
     const block = await models.Block.findOne({
+      attributes: ['hash'],
       where: {
         height: blockIndex,
       },
@@ -51,6 +52,7 @@ router.post('/', async function(req, res, next) {
 
     // looking for block
     const block = await models.Block.findOne({
+      attributes: ['hash'],
       where: {
         hash: search,
       },