moin-2.0 / MoinMoin / items /

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# Copyright: 2012 MoinMoin:PavelSviderski
# License: GNU GPL v2 (or any later version), see LICENSE.txt for details.

MoinMoin - Blog itemtype

import time
from datetime import datetime

from flask import request, abort
from flask import g as flaskg
from flask import current_app as app

from whoosh.query import Term, And, Prefix, DateRange
from whoosh.sorting import FunctionFacet

from MoinMoin.i18n import L_
from MoinMoin.themes import render_template
from MoinMoin.forms import OptionalText, Tags, DateTime
from import AccessDenied
from MoinMoin.constants.keys import NAME, NAME_EXACT, WIKINAME, ITEMTYPE, MTIME, PTIME, TAGS
from MoinMoin.items import Item, Default, register, BaseMetaForm

ITEMTYPE_BLOG_ENTRY = u'blogentry'

class BlogMetaForm(BaseMetaForm):
    supertags = (Tags.using(label=L_('Supertags (Categories)'))
                 .with_properties(placeholder=L_("Ordered comma separated list of tags")))

class BlogEntryMetaForm(BaseMetaForm):
    summary = (OptionalText.using(label=L_("Title"))
               .with_properties(placeholder=L_("One-line title of the blog entry")))
    ptime = DateTime.using(label=L_('Publication time (UTC)'), optional=True)

class Blog(Default):
    itemtype = ITEMTYPE_BLOG
    display_name = L_('Blog')
    description = L_('Blog item')
    order = 0

    class _ModifyForm(Default._ModifyForm):
        meta_form = BlogMetaForm
        meta_template = 'blog/modify_main_meta.html'

    def do_show(self, revid):
        Show a blog item and a list of its blog entries below it.

        If tag GET-parameter is defined, the list of blog entries consists only
        of those entries that contain the tag value in their lists of tags.
        # for now it is just one tag=value, later it could be tag=value1&tag=value2&...
        tag = request.values.get('tag')
        prefix = + u'/'
        current_timestamp = int(time.time())
        terms = [Term(WIKINAME, app.cfg.interwikiname),
                 # Only blog entry itemtypes
                 Term(ITEMTYPE, ITEMTYPE_BLOG_ENTRY),
                 # Only sub items of this item
                 Prefix(NAME_EXACT, prefix),
        if tag:
            terms.append(Term(TAGS, tag))
        query = And(terms)

        def ptime_sort_key(searcher, docnum):
            Compute the publication time key for blog entries sorting.

            If PTIME is not defined, we use MTIME.
            fields = searcher.stored_fields(docnum)
            ptime = fields.get(PTIME, fields[MTIME])
            return ptime
        ptime_sort_facet = FunctionFacet(ptime_sort_key)

        revs =, sortedby=ptime_sort_facet, reverse=True, limit=None)
        blog_entry_items = [Item.create(rev.meta[NAME], rev_id=rev.revid) for rev in revs]
        return render_template('blog/main.html',

class BlogEntry(Default):
    itemtype = ITEMTYPE_BLOG_ENTRY
    display_name = L_('Blog entry')
    description = L_('Blog entry item')
    order = 0

    class _ModifyForm(Default._ModifyForm):
        meta_form = BlogEntryMetaForm
        meta_template = 'blog/modify_entry_meta.html'

        def from_item(cls, item):
            form = super(BlogEntry._ModifyForm, cls).from_item(item)
            # preload PTIME with the current datetime
            if not form['meta_form']['ptime']:
            return form

    def do_show(self, revid):
        blog_item_name ='/', 1)[0]
            blog_item = Item.create(blog_item_name)
        except AccessDenied:
        if not isinstance(blog_item, Blog):
            # The parent item of this blog entry item is not a Blog item.
        return render_template('blog/entry.html',