Add beforeNuxtRender hook

lib/app/index.js

@@ -113,6 +113,7 @@ async function createApp (ssrContext) {
     <% if(store) { %>store,<%  } %>
     req: ssrContext ? ssrContext.req : undefined,
     res: ssrContext ? ssrContext.res : undefined,
+    beforeRenderFns: ssrContext ? ssrContext.beforeRenderFns : undefined
   }, app)
 
   <% plugins.filter(p => p.ssr).forEach(plugin => { %>

lib/app/server.js

@@ -45,27 +45,28 @@ export default async context => {
   // Create context.next for simulate next() of beforeEach() when wanted to redirect
   context.redirected = false
   context.next = createNext(context)
-  
+  context.beforeRenderFns = []
+
   const { app, router<%= (store ? ', store' : '') %> } = await createApp(context)
   const _app = new Vue(app)
-  
+
   <% if (store) { %>
   // Add store to the context
   context.store = store
   <% } %>
- 
+
   // Add route to the context
   context.route = router.currentRoute
-  
+
   // Nuxt object
   context.nuxt = { layout: 'default', data: [], error: null<%= (store ? ', state: null' : '') %>, serverRendered: true }
- 
+
   // Add meta infos
   context.meta = _app.$meta()
- 
+
   // Error function
   context.error = _app.$options._nuxt.error.bind(_app)
- 
+
   // Keep asyncData for each matched component in context
   context.asyncData = {}
 
@@ -73,8 +74,8 @@ export default async context => {
   const ctx = getContext(context, app)
 
   <% if (isDev) { %>const s = isDev && Date.now()<% } %>
- 
+
-  // Resolve components    
+  // Resolve components
   let Components = []
   try {
     Components = await Promise.all(getMatchedComponents(router.match(context.url)).map(Component => {
@@ -118,7 +119,7 @@ export default async context => {
   layout = _app.setLayout(layout)
   // ...Set layout to __NUXT__
   context.nuxt.layout = _app.layoutName
- 
+
   // Call middleware (layout + pages)
   if (!context.nuxt.error) {
     midd = []
@@ -134,9 +135,9 @@ export default async context => {
       }
       return middleware[name]
     })
-    
+
     await middlewareSeries(midd, ctx)
-    
+
     // If there is a redirect
     if (context.redirected) return noopApp()
   }
@@ -161,11 +162,11 @@ export default async context => {
     // Call the 404 error by making the Components array empty
     Components = []
   }
-  
+
   // Call asyncData & fetch hooks on components matched by the route.
   let asyncDatas = await Promise.all(Components.map(Component => {
     let promises = []
- 
+
     // Call asyncData(context)
     if (Component.options.asyncData && typeof Component.options.asyncData === 'function') {
       let promise = promisify(Component.options.asyncData, ctx)
@@ -189,7 +190,7 @@ export default async context => {
 
     return Promise.all(promises)
   }))
-  
+
   // If no Components found, returns 404
   if (!Components.length) {
     context.nuxt.error = context.error({ statusCode: 404, message: 'This page could not be found.' })
@@ -210,6 +211,8 @@ export default async context => {
   context.nuxt.state = store.state
   <% } %>
 
+  await Promise.all(context.beforeRenderFns.map((fn) => promisify(fn, { Components, nuxtState: context.nuxt })))
+
   // If no error, return main app
   if (!context.nuxt.error) {
     return _app
@@ -220,6 +223,6 @@ export default async context => {
   context.nuxt.layout = layout || ''
   await _app.loadLayout(layout)
   _app.setLayout(layout)
- 
+
   return _app
 }

lib/app/utils.js

@@ -104,6 +104,9 @@ export function getContext (context, app) {
   if (context.req) ctx.req = context.req
   if (context.res) ctx.res = context.res
   if (context.from) ctx.from = context.from
+  if (ctx.isServer && context.beforeRenderFns) {
+    ctx.beforeNuxtRender = (fn) => context.beforeRenderFns.push(fn)
+  }
   return ctx
 }