controller.js

• Classes
  • BaseController
    • constructor
    • configure
    • view
    • link

http/mvc/controller.js
  
/**
 * Base Controller
 *
 * @module greppy/http/mvc/controller
 * @author Hermann Mayer <hermann.mayer92@gmail.com>
 */
var path = require('path');
/**
 * @constructor
 */
var BaseController = function()
{
    var self = this;
    this.options = {
        path: '',
        auth: {
            handler: null,
            routes: null
        }
    };
    this.actions  = {};
    this.helpers  = {};
    this.viewPath = '';
    // Load all Greppy controller helpers dynamically
    greppy.helper.list().forEach(function(itm) {
        // load only controller helpers
        if (!/^controller\./.test(itm)) {
            return;
        }
        var helper = itm.split('.');
        helper.shift();
        helper = helper.pop();
        self[helper.toCamelCase()] = greppy.helper.get(itm);
    });
};
/**
 * Configure the controller.
 *
 * @param {Object} app - The application object
 * @param {Object} server - Server object
 * @param {Function} callback - Function to call on finish
 */
BaseController.prototype.configure = function(app, server, callback)
{
    callback && callback();
};
/**
 * Build a view path by a given file.
 *
 * @param {String} file - Name of the view file
 * @return {String}
 */
BaseController.prototype.view = function(file)
{
    return path.normalize(this.viewPath + '/' + file);
};
/**
 * Build a link to an action.
 *
 * @param {String} action - Name of the action to link to
 * @param {Object} params - Parameters object
 * @param {String} [absoluteUrl] - If given, it will be prefixed
 * @return {String}
 */
BaseController.prototype.link = function(action, params, absoluteUrl)
{
    if (!this.actions.hasOwnProperty(action)) {
        throw new Error(
            'Action "' + action + '" is not registered for the controller'
        );
    }
    var link = this.basePath + this.actions[action].path;
    if (params) {
        // Replace all parameters which are given by the user
        Object.keys(params).forEach(function(param) {
            link = link.replace(new RegExp(':' + param + '[\?]?', 'ig'), params[param]);
        });
    }
    // Remove any optional parameters which where not specified
    link = link.replace(new RegExp(':.*\\?', 'ig'), '');
    // Replace multiple slashes to a single one: /// -> /
    link = link.replace(/[/]+/gi, '/');
    // Check replacements
    var unreplaced = link.split('/').filter(function(itm) {
        return ~itm.indexOf(':');
    });
    if (0 !== unreplaced.length) {
        throw new Error(
            'Failed to fully resolve the action link for "' + action + '". ' +
            'Unresolved parameters: ' + unreplaced.join(', ') +
            '\nResolved to: ' + link +
            '\nGiven parameters:\n' + JSON.stringify(params, null, '    ')
        );
    }
    return (absoluteUrl) ? absoluteUrl + link : link;
};
module.exports = BaseController;