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# Atom Syndication

This module provides a class called `AtomFeed` which can be used to generate feeds in the Atom syndication format (see RFC 4287).

Example:

    def atom_feed(request):
        feed = AtomFeed("My Blog", feed_url=request.url,
                        url=request.host_url,
                        subtitle="My example blog for a feed test.")
        for post in Post.query.limit(10).all():
            feed.add(post.title, post.body, content_type='html',
                     author=post.author, url=post.url, id=post.uid,
                     updated=post.last_update, published=post.pub_date)
        return feed.get_response()

class `werkzeug.contrib.atom.``AtomFeed`(title=None, entries=None, **kwargs)

  A helper class that creates Atom feeds.

  Parameters:

  - title – the title of the feed. Required.
  - title_type – the type attribute for the title element. One of `'html'`, `'text'` or `'xhtml'`.
  - url – the url for the feed (not the url of the feed)
  - id – a globally unique id for the feed. Must be an URI. If not present the feed_url is used, but one of both is required.
  - updated – the time the feed was modified the last time. Must be a `datetime.datetime` object. If not present the latest entry’s updated is used. Treated as UTC if naive datetime.
  - feed_url – the URL to the feed. Should be the URL that was requested.
  - author – the author of the feed. Must be either a string (the name) or a dict with name (required) and uri or email (both optional). Can be a list of (may be mixed, too) strings and dicts, too, if there are multiple authors. Required if not every entry has an author element.
  - icon – an icon for the feed.
  - logo – a logo for the feed.
  - rights – copyright information for the feed.
  - rights_type – the type attribute for the rights element. One of `'html'`, `'text'` or `'xhtml'`. Default is `'text'`.
  - subtitle – a short description of the feed.
  - subtitle_type – the type attribute for the subtitle element. One of `'text'`, `'html'`, `'text'` or `'xhtml'`. Default is `'text'`.
  - links – additional links. Must be a list of dictionaries with href (required) and rel, type, hreflang, title, length (all optional)
  - generator – the software that generated this feed. This must be a tuple in the form `(name, url, version)`. If you don’t want to specify one of them, set the item to None.
  - entries – a list with the entries for the feed. Entries can also be added later with `add()`.

  For more information on the elements see http://www.atomenabled.org/developers/syndication/

  Everywhere where a list is demanded, any iterable can be used.

  `add`(*args, **kwargs)

    Add a new entry to the feed. This function can either be called with a `FeedEntry` or some keyword and positional arguments that are forwarded to the `FeedEntry` constructor.

  `generate`()

    Return a generator that yields pieces of XML.

  `get_response`()

    Return a response object for the feed.

  `to_string`()

    Convert the feed into a string.

class `werkzeug.contrib.atom.``FeedEntry`(title=None, content=None, feed_url=None, **kwargs)

  Represents a single entry in a feed.

  Parameters:

  - title – the title of the entry. Required.
  - title_type – the type attribute for the title element. One of `'html'`, `'text'` or `'xhtml'`.
  - content – the content of the entry.
  - content_type – the type attribute for the content element. One of `'html'`, `'text'` or `'xhtml'`.
  - summary – a summary of the entry’s content.
  - summary_type – the type attribute for the summary element. One of `'html'`, `'text'` or `'xhtml'`.
  - url – the url for the entry.
  - id – a globally unique id for the entry. Must be an URI. If not present the URL is used, but one of both is required.
  - updated – the time the entry was modified the last time. Must be a `datetime.datetime` object. Treated as UTC if naive datetime. Required.
  - author – the author of the entry. Must be either a string (the name) or a dict with name (required) and uri or email (both optional). Can be a list of (may be mixed, too) strings and dicts, too, if there are multiple authors. Required if the feed does not have an author element.
  - published – the time the entry was initially published. Must be a `datetime.datetime` object. Treated as UTC if naive datetime.
  - rights – copyright information for the entry.
  - rights_type – the type attribute for the rights element. One of `'html'`, `'text'` or `'xhtml'`. Default is `'text'`.
  - links – additional links. Must be a list of dictionaries with href (required) and rel, type, hreflang, title, length (all optional)
  - categories – categories for the entry. Must be a list of dictionaries with term (required), scheme and label (all optional)
  - xml_base – The xml base (url) for this feed item. If not provided it will default to the item url.

  For more information on the elements see http://www.atomenabled.org/developers/syndication/

  Everywhere where a list is demanded, any iterable can be used.