Add computed view name to {{@ExpressHandlebars}}

Fixes #101

lib/express-handlebars.js

@@ -75,15 +75,15 @@ ExpressHandlebars.prototype.getPartials = function (options) {
     }, this);
 
     return Promise.all(partialsDirs).then(function (dirs) {
-        var getPartialName = this._getPartialName.bind(this);
+        var getTemplateName = this._getTemplateName.bind(this);
 
         return dirs.reduce(function (partials, dir) {
             var templates = dir.templates;
             var namespace = dir.namespace;
             var filePaths = Object.keys(templates);
 
             filePaths.forEach(function (filePath) {
-                var partialName       = getPartialName(filePath, namespace);
+                var partialName       = getTemplateName(filePath, namespace);
                 partials[partialName] = templates[filePath];
             });
 
@@ -176,6 +176,15 @@ ExpressHandlebars.prototype.renderView = function (viewPath, options, callback)
 
     var context = options;
 
+    // Express provides `settings.views` which is the path to the views dir that
+    // the developer set on the Express app. When this value exists, it's used
+    // to compute the view's name.
+    var view;
+    var viewsPath = options.settings && options.settings.views;
+    if (viewsPath) {
+        view = this._getTemplateName(path.relative(viewsPath, viewPath));
+    }
+
     // Merge all sources of helpers together.
     var helpers = utils.assign({},
             this.handlebars.helpers, this.helpers, options.helpers);
@@ -184,6 +193,7 @@ ExpressHandlebars.prototype.renderView = function (viewPath, options, callback)
     // rendering options.
     options = {
         cache : options.cache,
+        view  : view,
         layout: 'layout' in options ? options.layout : this.defaultLayout,
 
         data    : options.data,
@@ -291,7 +301,7 @@ ExpressHandlebars.prototype._getFile = function (filePath, options) {
     });
 };
 
-ExpressHandlebars.prototype._getPartialName = function (filePath, namespace) {
+ExpressHandlebars.prototype._getTemplateName = function (filePath, namespace) {
     var extRegex = new RegExp(this.extname + '$');
     var name     = filePath.replace(extRegex, '');