feedster

Easy RSS feed generation in Node.js, supports most used RSS extensions like itunes for podcast generation.

Installation

Install from npm:

npm install feedster --save

TL;DR

Example script for generating a minimal RSS feed:

var feedster = require('feedster');
// create feed with required elements
var feed = feedster.createFeed({
    title: 'My Awesome Blog'
    description: 'The best blog you have ever seen'
    link: 'http://path/to/blog'
});
// add new item to the feed
feed.addItem({
    // an item needs to contain either title or description, all other fields are optional
    title: 'My first blog post',
    // pubDate is not required but really useful
    pubDate: '2011-01-01 11:12:34 +0000'
});
// generate a RSS string and print to console
var rss = feed.render();
console.log(rss);

Usage

Require feedster module

var feedster = require('feedster');

Create new feed object

var feed = feedster.createFeed(headers)

Where

• headers is an object with channel headers (see possible options below)
• feed is the feed object

Example

var feedster = require('feedster');
var feed = feedster.createFeed({
    title: 'My Awesome Blog'
});

Add items to feed

Add additional item to the feed with

feed.addItem(item)

Where

• item is a feed item (see possible options below)

Example

var feedster = require('feedster');
var feed = feedster.createFeed();
feed.addItem({
    title: 'My first blog post',
    pubDate: '2011-01-01 14:34:00'
})

Generate RSS feed

Generate feed object into a rss feed string with

var rss = feed.render([options])

Where

• options is an optional options object
  • options.indent defines the look of the generated file. If false, then the XML is not indented. Use 2 spaces " " for 2-spaces indentation etc.

Example

var feedster = require('feedster');
var feed = feedster.createFeed({
    title: 'My Awesome Blog'
});
feed.addItem({
    title: 'My first blog post',
    // thats badly formatted date (no timezone etc.) but it works
    pubDate: '2011-01-01 14:34:00'
})
var rss = feed.render({indent: '  '});
console.log(rss);

Output:

<?xml version="1.0" encoding="UTF-8"?>
<rss version="2.0">
  <channel>
    <title>My Awesome Blog</title>
    <lastBuildDate>Sat, 1 Jan 2011 14:34:00 +0200</lastBuildDate>
    <item>
      <title>My first blog post</title>
      <pubDate>Sat, 1 Jan 2011 14:34:00 +0200</pubDate>
    </item>
  </channel>
</rss>

Channel options

category

Defines a category or a tag to which the feed belongs. The value is either a string, or an object or an array of mixed strings and objects for multiple categories. Category object has two properties:

• value - category title
• domain - identifies the category's taxonomy

Domain is rarely used, so just using strings with category names is sufficient for most cases

var headers = {
    category: [
        // first category as a plain string
        'Category1',
        // second category as an object
        {
            value: 'Category2/Subcategory/SubSub',
            domain: 'dmoz'
        }
    ]
};

cloud

Indicates that updates to the feed can be monitored using a web service. Defined by an object with the following properties:

• domain - identifies the host name or IP address of the web service that monitors updates to the feed
• path - provides the web service's path
• port - identifies the web service's TCP port
• protocol - "xml-rpc" if the service employs XML-RPC or "soap" if it employs SOAP
• registerProcedure - names the remote procedure to call when requesting notification of updates

var headers = {
    cloud: {
        domain: "server.example.com",
        path: "/rpc",
        port: "80",
        protocol: "xml-rpc",
        registerProcedure: "cloud.notify"
    }
};

copyright

A string about the copyright holder.

var headers = {
    copyright: '© 2015 My Name'
};

description

Required value

Summary of the feed.

var headers = {
    description: 'Latest posts from my awesome blog'
};

docs

URL to RSS format specification.

var headers = {
    docs: 'http://www.rssboard.org/rss-specification'
};

generator

Software that created the feed.

var headers = {
    generator: 'My Awesome Feed Generator v1.0'
};

image

Graphical logo for the feed. Either an url to the image or an object with the following properties:

• url - image location
• link - url to the website. If not set the value from headers.link is used
• title - title of the image. If not set the value from headers.title is used
• description - image description
• width - image width in pixels
• height - image height in pixels

var headers = {
    image: 'http://image/location'
};
var headers = {
    image: {
        url: 'http://image/location',
        link: 'http://link/to/blog',
        title: 'My Blog Logo'
    }
};

language

Language code.

var headers = {
    language: 'en-us'
};

lastBuildDate

Last modification date. If not set defaults to the time of the newest post in the feed. Recommended option is to not set it manually.

var headers = {
    lastBuildDate: '2011-01-01 13:34:11'
};

link

Required value

URL of the website.

var headers = {
    link: 'http://path/to/my/blog'
};

managingEditor

E-mail address and name of the person to contact regarding the editorial content of the feed. Has the following properties:

• name is the name of the editor
• email is the e-mail address of the editor

var headers = {
    managingEditor: {
        name: 'Editor Name',
        email: '[email protected]'
    }
};

pubDate

Publication date and time of the feed's content. Recommended option is to skip it and rely only on auto-generated lastBuildDate.

The value can either be a Date object or a datetime string (any valid format is ok, the value is converted to RSS date format automatically).

var headers = {
    pubDate: new Date()
};

rating

Advisory label for the content in a feed.

var headers = {
    rating: '(PICS-1.1 "http://www.rsac.org/ratingsv01.html" l by "[email protected]" on "2007.01.29T10:09-0800" r (n 0 s 0 v 0 l 0))'
};

textInput

Defines a form to submit a text query to the feed's publisher. Nobody uses it, seems pretty strange but it is supported by feedster nevertheless. An object with the following properties:

• description
• link
• name
• title

var headers = {
    textInput: {
        description: 'Your aggregator supports the textInput element. What software are you using?',
        link: 'http://www.cadenhead.org/textinput.php',
        name: 'query',
        title: 'TextInput Inquiry'
    }
};

title

Required value

The name of the feed.

var headers = {
    title: 'My Awesome Blog'
};

webMaster

E-mail address and name of the person to contact regarding technical issues about the feed. Has the following properties:

• name is the name of the web master
• email is the e-mail address of the web master

var headers = {
    webMaster: {
        name: 'Webmaster Name',
        email: '[email protected]'
    }
};

Channel Extensions

atomLink

atomLink maps to atom:link from the Atom specification that defines a relationship between a web resource (such as a page) and an RSS channel. For multiple link elements, use an array for the values.

An object with the following properties:

• hreflang - language code of the related resource
• length - resource's size in bytes
• title - description of the resource
• type - mime-type of the resource
• rel - keyword that identifies the nature of the relationship between the linked resouce and the element
  • "alternate" - alternate representation of the same resource
  • "enclosure" - media object, usually an audio or video file
  • "related" - related resource
  • "self - the feed itself
  • "via" - the original source of the entry

var headers = {
    atomLink: {
        href: 'http://path/to/feed',
        rel: 'self' // type is automatically for "self"
    }
};

hub

hub maps to atom:link with rel="hub". Takes a string value which is an URL pointing to the PubSubHubbub hub.

var headers = {
    hub: 'http://path/to/hub'
};

itunes

itunes is an object that maps to the itunes specification and is used for podcasting. Channel level itunes element supports the following properties:

• author - string, artist column in iTunes
• block - boolean, if true then the entire podcast is removed from the iTunes Store podcast directory
• category - category element, see below for formatting
• image - string, url to the logo of the podcast
• explicit - boolean, if true then parental advisory graphic is shown under podcast details
• complete - boolean, if true then indicates that no more episodes will be posted in the future
• new-feed-url - string, reports new feed url for this podcast to iTunes
• owner - feed owner object with properties name and email
• subtitle - string, description column
• summary - string, displayed when the circled i icon in the Description column in iTunes is clicked

Category format

• Plain string for a single top level category: "Business"
• Array of categories for multiple: ["Business", "Technology"]
• Sub-categories: {name: "Business", sub: ["Careers"]}

You can't use random values as categories, see available categories from the iTunes Categories for Podcasting section in itunes module documentation.

var headers = {
    itunes: {
        author: 'Your\'s truly',
        block: true, // hide this podcast from the directory
        explicit: true, // show parental advisory graphic
        owner: {
            name: 'My Name',
            email: '[email protected]'
        },
        category: {
            value: 'Business', // main category
            sub: ['Careers', 'Football'] // sub categories
        }
    }
};

updatePeriod

updatePeriod maps to sy:updatePeriod from the Syndication module. Describes a period over which the channel format is updated. Acceptable values are: hourly, daily, weekly, monthly, yearly. Defaults to daily.

var headers = {
    updatePeriod: 'hourly'
};

updateFrequency

updateFrequency maps to sy:updateFrequency from the Syndication module. A positive integer that describes how many times the channel is updated in selected update period.

var headers = {
    // updated once in a hour
    updatePeriod: 'hourly',
    updateFrequency: 1
};

Item options

author

The person who wrote the item. Has the following properties:

• name is the name of the author
• email is the e-mail address of the author

feed.additem({
    author: {
        name: 'Author Name',
        email: '[email protected]'
    }
});

Recommended action is to use creator instead of author as creator does not require an e-mail address value

category

Defines a category or tag for the item. A string or an object. For multiple categories, use an array for the values. Category object has the following properties:

• value is the category name
• domain identifies the category's taxonomy

Domain is rarely used, so just using strings with category names is sufficient for most cases

feed.additem({
    category: [
        // first category as a plain string
        'Category1',
        // second category as an object
        {
            value: 'Category2/Subcategory/SubSub',
            domain: 'dmoz'
        }
    ]
});

comments

Points to an URL where comments for the item can be found.

feed.additem({
    comments: 'http://path/to/comments'
});

description

Item's full content or a summary of its contents. Either title or description has to be set for the item, using both is optional. Usually description is used for a summary and the content extension element (see below) is used for the full contents.

feed.additem({
    description: 'Just another rant about my awesomness'
});

enclosure

Associates a media object, usually an audio or video file. The value can be an URL pointing to the media object or an object value with the following properties:

• url - points to the URL of the file
• length - the size of the file in bytes. Required, but can be set to "0" if the size not known
• type - defines the mime-type of the resource

If length is not defined, a default value of "0" is used. If type is missing, it is detected from the file extension of the url.

feed.additem({
    enclosure: 'http://path/to/assets/podcast.mp3'
});
feed.additem({
    enclosure: {
        url: 'http://path/to/assets/podcast.mp3',
        type: 'audio/mpeg',
        length: 12345
    }
});

guid

A string value that uniquely identifies the item. Recommended action would be to use the permalink to the item as guid, this is also the default if isPermaLink option is not used.

If the value is permalink, then you can use the URL as the value, otherwise use an object with the following properties:

• value - guid value
• isPermaLink - boolean, if set to true or is missing then the value must be permalink to the item

feed.additem({
    guid: 'http://path/to/posts/1'
});
feed.additem({
    guid: {
        value: 'some-unique-identifier',
        isPermaLink: false
    }
});

link

The URL pointing to a web page associated with the item.

feed.additem({
    link: 'http://path/to/posts/1'
});

pubDate

Publication date and time of the item. The value can either be a Date object or a datetime string (any valid format is ok, the value is converted to RSS date format automatically).

feed.additem({
    pubDate: new Date()
});

source

Indicates the original source RSS of the entry. An object with the following properties:

• title - the title of the original RSS feed
• url - the URL to the original RSS feed

feed.additem({
    source: {
        title: 'Some Other Publication',
        url: 'http://path/to/publication.rss'
    }
});

title

Item's headline. Either title or description has to be set for the item, using both is optional.

feed.additem({
    title:
});

Item Extensions

commentCount

commentCount maps to slash:comments from the Slashdot module and contains a positive integer as the count of comments for the item.

feed.additem({
    commentCount: 123
});

commentRss

commentRss maps to wfw:commentRss from the Well Formed Web Comments module and includes an URL to the comments RSS feed for the item.

feed.additem({
    commentRss: 'http://path/to/post/1/comments/feed'
});

content

content maps to content:encoded from the content module and contains the full contents for the item. Mostly used together with the description element where description holds the summary.

feed.additem({
    content: '<p>Full text contents</p>',
    description: 'Summary of the post'
});

creator

creator maps to dc:creator from Dublin Core and is a string with the name of the person who created the item.

feed.additem({
    creator: 'My name'
});

itunes

itunes is an object that maps to the itunes specification and is used for podcasting. Item level itunes element goes together with enclosure element that defines the actual podcast show, itunes only adds metadata to it. The object supports the following properties:

• author - string, artist column in iTunes
• block - boolean, if true then the this episode is removed from the iTunes Store
• duration - string, formatted as hh:mm:ss or mm:ss
• explicit - boolean, if true then parental advisory graphic is shown under podcast details
• image - string, url to the logo of the podcast
• isClosedCaptioned - boolean, if true shows Closed Caption graphic in Name column
• order - number, if used overrides the ordering in itunes listing, for example, "1" sets this as the first item
• subtitle - string, description column
• summary - string, displayed when the circled i icon in the Description column in iTunes is clicked

var headers = {
    enclosure: 'http://path/to/assets/podcast.mp3',
    itunes: {
        author: 'Your\'s truly',
        duration: '13:34'
    }
};

lat and long

lat and long map to geo:lat and geo:long from the Basic Geo module. The values indicate a geographical point related to the item.

feed.additem({
    lat: 55.701,
    long: 12.552
});

media

media is an object that maps to media:content of the Media RSS module. For multiple media elements, use an array for the values.

Media object supports the following properties:

• url
• fileSize
• type
• medium
• duration
• height
• width
• title
• description
• keywords
• thumbnails
• category
• player
• credit
• ... and many more, only values that require sub-elements are not supported

feed.additem({
    media: {
        url: 'http://path/to/assets/1.jpg',
        medium: 'image',
        title: 'Attached image',
        restriction: {
            type: 'sharing',
            relationship: 'deny'
        }
    }
});

License

MIT