Ghost/core/frontend/helpers/ghostNav.js

53 lines
1.7 KiB
JavaScript

(function () {
"use strict";
var fs = require('fs'),
path = require('path'),
_ = require('underscore'),
handlebars = require('express-hbs').handlebars,
nodefn = require('when/node/function'),
GhostNavHelper;
GhostNavHelper = function (navTemplate) {
// Bind the context for our methods.
_.bindAll(this, 'compileTemplate', 'renderNavItems');
if (_.isFunction(navTemplate)) {
this.navTemplateFunc = navTemplate;
} else {
this.navTemplatePath = navTemplate;
}
};
GhostNavHelper.prototype.compileTemplate = function (templatePath) {
var self = this;
// Allow people to overwrite the navTemplatePath
templatePath = templatePath || this.navTemplatePath;
return nodefn.call(fs.readFile, templatePath).then(function(navTemplateContents) {
// TODO: Can handlebars compile async?
self.navTemplateFunc = handlebars.compile(navTemplateContents.toString());
});
};
GhostNavHelper.prototype.renderNavItems = function (navItems) {
var output;
output = this.navTemplateFunc({links: navItems});
return output;
};
// A static helper method for registering with ghost
GhostNavHelper.registerWithGhost = function(ghost) {
var templatePath = path.join(ghost.paths().frontendViews, 'nav.hbs'),
ghostNavHelper = new GhostNavHelper(templatePath);
return ghostNavHelper.compileTemplate().then(function() {
ghost.registerThemeHelper("ghostNav", ghostNavHelper.renderNavItems);
});
};
module.exports = GhostNavHelper;
}());