Merge pull request #71 from agoalofalife/master

update doc validate Method

Author: atinux

en/api/pages-validate.md

@@ -10,7 +10,7 @@ description: Nuxt.js lets you define a validator method inside your dynamic rout
 - **Type:** `Function`
 
 ```js
-validate({ params, query }) {
+validate({ params, query, store }) {
   return true // if the params are valid
   return false // will stop Nuxt.js to render the route and display the error page
 }
@@ -28,3 +28,14 @@ export default {
   }
 }
 ```
+
+You can also check some data in your [store](/guide/vuex-store) for example (filled by [nuxtServerInit action](/guide/vuex-store#the-nuxtserverinit-action) before):
+
+```js
+export default {
+  validate ({ params, store }) {
+    // Check if `params.id` is an existing category
+    return store.state.categories.some((category) => category.id === params.id)
+  }
+}
+```