From 20b9a32209f79d9cdcd44f21b0f48395924fd352 Mon Sep 17 00:00:00 2001
From: Vu Quang Tam <quangtam.info@gmail.com>
Date: Fri, 10 Nov 2017 19:51:29 +0700
Subject: [PATCH] Add find by attribute and value

Add find object by attribute & value
---
 src/jsonapi-datastore.js | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/src/jsonapi-datastore.js b/src/jsonapi-datastore.js
index 183708e..5cebc2f 100644
--- a/src/jsonapi-datastore.js
+++ b/src/jsonapi-datastore.js
@@ -114,7 +114,19 @@ class JsonApiDataStore {
     if (!this.graph[type] || !this.graph[type][id]) return null;
     return this.graph[type][id];
   }
-
+   /**
+    * Retrieve all models by type, attribute and value.
+    * @method findByAttr
+    * @param {string} type The type of the model.
+    * @return {object} The corresponding model if present, and null otherwise.
+    */
+   findByAttr(type, attr, value) {
+     if (!this.graph[type]) return null;
+     var typeDatas = this.graph[type];
+     for (var typeData in typeDatas) {
+       if(typeDatas[typeData][attr] == value) return typeDatas[typeData];
+     }
+   }
   /**
    * Retrieve all models by type.
    * @method findAll