dot: layout option

index.js

@@ -36,12 +36,12 @@ function fastifyView (fastify, opts, next) {
   const defaultCtx = opts.defaultContext || {}
   const layoutFileName = opts.layout
 
-  if (layoutFileName && type !== 'handlebars' && type !== 'ejs' && type !== 'eta') {
-    next(new Error('Only Handlebars, EJS, and Eta support the "layout" option'))
+  if (layoutFileName && type !== 'dot' && type !== 'handlebars' && type !== 'ejs' && type !== 'eta') {
+    next(new Error('Only Dot, Handlebars, EJS, and Eta support the "layout" option'))
     return
   }
 
-  if (layoutFileName && !hasAccessToLayoutFile(layoutFileName)) {
+  if (layoutFileName && !hasAccessToLayoutFile(layoutFileName + ((type === 'dot') ? '.dot' : ''))) {
     next(new Error(`unable to access template "${layoutFileName}"`))
     return
   }
@@ -57,7 +57,7 @@ function fastifyView (fastify, opts, next) {
     'art-template': viewArtTemplate,
     twig: viewTwig,
     liquid: viewLiquid,
-    dot: dotRender,
+    dot: withLayout(dotRender),
     eta: withLayout(viewEta),
     _default: view
   }

templates/layout.dot

@@ -0,0 +1,3 @@
+header: {{! it.text }}
+{{= it.body }}
+footer

test/test-dot.js

@@ -447,3 +447,38 @@ test('fastify.view with dot engine, should throw page missing', t => {
     })
   })
 })
+
+test('reply.view with dot engine with layout option', t => {
+  t.plan(6)
+  const fastify = Fastify()
+  const engine = require('dot')
+  const data = { text: 'text' }
+
+  fastify.register(require('../index'), {
+    engine: {
+      dot: engine
+    },
+    root: 'templates',
+    layout: 'layout'
+  })
+
+  fastify.get('/', (req, reply) => {
+    reply.view('testdot', data)
+  })
+
+  fastify.listen(0, err => {
+    t.error(err)
+
+    sget({
+      method: 'GET',
+      url: 'http://localhost:' + fastify.server.address().port
+    }, (err, response, body) => {
+      t.error(err)
+      t.strictEqual(response.statusCode, 200)
+      t.strictEqual(response.headers['content-length'], '' + body.length)
+      t.strictEqual(response.headers['content-type'], 'text/html; charset=utf-8')
+      t.strictEqual('header: textfoo text1 <p>foo</p>footer', body.toString())
+      fastify.close()
+    })
+  })
+})

test/test.js

@@ -377,7 +377,7 @@ test('register callback should throw if layout option provided with wrong engine
     layout: 'template'
   }).ready(err => {
     t.ok(err instanceof Error)
-    t.is(err.message, 'Only Handlebars, EJS, and Eta support the "layout" option')
+    t.is(err.message, 'Only Dot, Handlebars, EJS, and Eta support the "layout" option')
   })
 })