mirror of https://gitee.com/bigwinds/arangodb
110 lines
3.4 KiB
JavaScript
110 lines
3.4 KiB
JavaScript
'use strict';
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////////////////////////////////////////////////////////////////////////////////
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/// @brief Foxx Template Middleware
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///
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/// @file
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///
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/// DISCLAIMER
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///
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/// Copyright 2013 triagens GmbH, Cologne, Germany
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///
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/// Licensed under the Apache License, Version 2.0 (the "License");
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/// you may not use this file except in compliance with the License.
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/// You may obtain a copy of the License at
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///
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/// http://www.apache.org/licenses/LICENSE-2.0
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///
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/// Unless required by applicable law or agreed to in writing, software
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/// distributed under the License is distributed on an "AS IS" BASIS,
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/// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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/// See the License for the specific language governing permissions and
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/// limitations under the License.
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///
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/// Copyright holder is triAGENS GmbH, Cologne, Germany
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///
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/// @author Lucas Dohmen
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/// @author Copyright 2013, triAGENS GmbH, Cologne, Germany
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////////////////////////////////////////////////////////////////////////////////
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var db = require("@arangodb").db,
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_ = require("lodash");
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////////////////////////////////////////////////////////////////////////////////
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/// @start Docu Block JSF_foxx_TemplateMiddleware_initializer
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///
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/// Initialize with the name of a collection or a collection and optionally
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/// a set of helper functions.
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/// Then use *before* to attach the initialized middleware to your Foxx.Controller
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///
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/// @EXAMPLES
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///
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/// ```js
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/// templateMiddleware = new TemplateMiddleware("templates", {
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/// uppercase: function (x) { return x.toUpperCase(); }
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/// });
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/// // or without helpers:
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/// //templateMiddleware = new TemplateMiddleware("templates");
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///
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/// app.before(templateMiddleware);
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/// ```
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/// @end Docu Block
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////////////////////////////////////////////////////////////////////////////////
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function TemplateMiddleware(templateCollection, helper) {
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var middleware = function (request, response) {
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var responseFunctions,
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_ = require("lodash");
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responseFunctions = {
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////////////////////////////////////////////////////////////////////////////////
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/// @start Docu Block JSF_foxx_TemplateMiddleware_response_render
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///
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/// `response.render(templatePath, data)`
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///
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/// When the TemplateMiddleware is included, you will have access to the
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/// *render* function on the response object.
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/// If you call render, Controller will look into the this collection and
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/// search by the path attribute. It will then render the template with the
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/// given data.
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///
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/// @EXAMPLES
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///
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/// ```js
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/// response.render("high/way", {username: 'Application'})
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/// ```
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/// @end Docu Block
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////////////////////////////////////////////////////////////////////////////////
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render: function (templatePath, data) {
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var template;
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template = templateCollection.firstExample({path: templatePath });
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if (_.isNull(template)) {
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throw new Error("Template '" + templatePath + "' does not exist");
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}
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if (template.templateLanguage !== "underscore") {
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throw new Error("Unknown template language '" + template.templateLanguage + "'");
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}
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this.body = _.template(template.content)(_.extend(data, helper));
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this.contentType = template.contentType;
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}
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};
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_.extend(response, responseFunctions);
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};
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if (_.isString(templateCollection)) {
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templateCollection = db._collection(templateCollection) ||
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db._create(templateCollection);
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}
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return middleware;
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}
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exports.TemplateMiddleware = TemplateMiddleware;
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