getTxById added to model

server/lib/db/transactions.js

@@ -2,6 +2,8 @@ const Transactions = require('../../models/transaction.js');
 const logger       = require('../logger');
 const config       = require('../../config');
 
+const txs = new Transactions();
+
 // For now, blocks handles these calls.
 // These will be replaced with more advanced mongo
 // No optimization yet.
@@ -84,11 +86,7 @@ function getTopTransactions(cb) {
 }
 
 function getTxById(txid, cb) {
-  getTransaction(
-    { hash: txid },
-    {  },
-    1,
-    0,
+  txs.byId(txid,
     (err, transaction) => {
       if (err) {
         logger.log('error',

server/models/transaction.js

@@ -1,6 +1,7 @@
 const mongoose = require('mongoose');
 const Input = require('./input');
 const Output = require('./output');
+const logger = require('../lib/logger');
 
 const Schema = mongoose.Schema;
 
@@ -24,6 +25,18 @@ const TransactionSchema = new Schema({
 
 TransactionSchema.index({ hash: 1 });
 
-const Transaction = mongoose.model('Transaction', TransactionSchema);
+TransactionSchema.methods.byId = function txById(txid, cb) {
+  return this.model('Transaction').findOne(
+    { hash: txid },
+    (err, tx) => {
+      if (err) {
+        logger.log('error',
+          `TransactionSchema.methods.byId: ${err}`);
+        return cb(err);
+      }
+      return cb(null, tx);
+    });
+};
 
-module.exports = Transaction;
+
+module.exports = mongoose.model('Transaction', TransactionSchema);