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index.js
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index.js
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/**!
* collection-sync
*
* @author Enrico Marino and Federico Spini
* @copyright 2013 Enrico Marino and Federico Spini
* @licence MIT
*/
/**
* Component dependencies.
*/
var request = require('request');
var model_sync = require('model-sync');
/**
* Expose component
*/
module.exports = function (collection) {
collection.prototype.model.use(model_sync);
/**
* root
*/
collection.prototype.root = '';
/**
* path
*/
collection.prototype.path = '/';
/**
* url
* Get the model url.
*
* @return {String} the collection url.
* @api public
*/
collection.prototype.url = function () {
return this.root
.concat('/')
.concat(this.path)
.replace(/\/\//, '/');
};
/**
* get_by_id
*
* @param {String} id id of the model to get
* @return {Model} model
* @api public
*/
collection.prototype.get_by_id = function (id) {
var models = this.models;
var len = models.length;
var i;
var model;
for (i = 0; i < len; i += 1) {
model = models[i];
if (model.id() === id) {
return model;
}
}
return;
}
/**
* obtain
* obtain a model (get or fetch)
*
* @param {String} id id
* @param {Function} callback callback
* @api public
*/
collection.prototype.obtain = function (id, callback) {
var model = this.get_by_id(id);
if (!model) {
model = new this.model();
model.set(model.primary_key, id);
this.add(model);
model.fetch(callback);
return;
}
callback(null, model);
}
/**
* create
*
* @param {Object} data data
* @param {Function} callback callback
* @param {Object} err error
* @param {Model} model model
* @param {Object} context
* @api public
*/
collection.prototype.create = function (attributes, options, callback, context) {
attributes = attributes || {};
options = options || {};
callback = callback || function () {};
var collection = this;
var url = collection.url();
var data = attributes;
request
.post(url)
.data(data)
.end(function (res) {
var models;
if (res.ok) {
models = collection.add(res.body, options);
callback.call(context, null, models);
} else {
callback.call(context, res.body, null);
}
});
};
/**
* fetch
*
* @param {Object} options options
* @param {Function} callback callback
* @param {Object} err error
* @param {Object} res response
* @param {Object} context
* @api public
*/
collection.prototype.fetch = function (options, callback, context) {
options = options || {};
callback = callback || function () {};
var query = options.query || {};
var collection = this;
var url = collection.url();
request
.get(url)
.query(query)
.end(function (res) {
var models;
if (res.ok) {
models = collection.add(res.body, options);
callback.call(context, null, models);
} else {
callback.call(context, res.text, null);
}
});
};
/*
* has
* Check if this list contains `obj`.
*
* @param {Mixed} obj
* @return {Boolean}
* @api public
*/
collection.prototype.has =
collection.prototype.contains = function (obj) {
var items = this.models;
var len = items.length;
var i;
var item;
var test;
for (i = 0; i < len; i += 1) {
item = items[i];
test = item.id() === obj.id();
if (test) {
return true;
}
}
return false;
};
return collection;
};