web/__init__.py
author Alexandre Fayolle <alexandre.fayolle@logilab.fr>
Thu, 21 Apr 2011 16:33:55 +0200
branchstable
changeset 7341 c419c2d0d13e
parent 6614 4b9a785df0f7
child 7990 a673d1d9a738
permissions -rw-r--r--
add a new method iter_process_result which does the same as proces_result but is a generator (closes #1625374) process_result is reimplemented using the new method, and the two helper methods are turned into generators. These generators use cursor.fetchmany instead of cursor.fetchall after setting cursor.arraysize to 100. This means that the whole result set should never loaded in memory when using the iter_process_result method. This is used in the "portable" database dump implementation when we typically to 'SELECT * FROM table', but could probably be used too in other parts of cubicweb.

# copyright 2003-2010 LOGILAB S.A. (Paris, FRANCE), all rights reserved.
# contact http://www.logilab.fr/ -- mailto:contact@logilab.fr
#
# This file is part of CubicWeb.
#
# CubicWeb is free software: you can redistribute it and/or modify it under the
# terms of the GNU Lesser General Public License as published by the Free
# Software Foundation, either version 2.1 of the License, or (at your option)
# any later version.
#
# CubicWeb is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
# FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more
# details.
#
# You should have received a copy of the GNU Lesser General Public License along
# with CubicWeb.  If not, see <http://www.gnu.org/licenses/>.
"""CubicWeb web client core. You'll need a apache-modpython or twisted
publisher to get a full CubicWeb web application
"""

__docformat__ = "restructuredtext en"
_ = unicode

from urllib import quote as urlquote

from logilab.common.deprecation import deprecated

from cubicweb.web._exceptions import *
from cubicweb.utils import json_dumps
from cubicweb.uilib import eid_param

assert json_dumps is not None, 'no json module installed'
dumps = deprecated('[3.9] use cubicweb.utils.json_dumps instead of dumps')(
    json_dumps)

INTERNAL_FIELD_VALUE = '__cubicweb_internal_field__'


class stdmsgs(object):
    """standard ui message (in a class for bw compat)"""
    BUTTON_OK     = (_('button_ok'), 'OK_ICON')
    BUTTON_APPLY  = (_('button_apply'), 'APPLY_ICON')
    BUTTON_CANCEL = (_('button_cancel'), 'CANCEL_ICON')
    BUTTON_DELETE = (_('button_delete'), 'TRASH_ICON')
    YES = (_('yes'), None)
    NO  = (_('no'), None)


from logging import getLogger
LOGGER = getLogger('cubicweb.web')

# XXX deprecated
FACETTES = set()


def jsonize(function):
    def newfunc(*args, **kwargs):
        value = function(*args, **kwargs)
        try:
            return json_dumps(value)
        except TypeError:
            return json_dumps(repr(value))
    return newfunc

@deprecated('[3.4] use req.ajax_replace_url() instead')
def ajax_replace_url(nodeid, rql, vid=None, swap=False, **extraparams):
    """builds a replacePageChunk-like url
    >>> ajax_replace_url('foo', 'Person P')
    "javascript: replacePageChunk('foo', 'Person%20P');"
    >>> ajax_replace_url('foo', 'Person P', 'oneline')
    "javascript: replacePageChunk('foo', 'Person%20P', 'oneline');"
    >>> ajax_replace_url('foo', 'Person P', 'oneline', name='bar', age=12)
    "javascript: replacePageChunk('foo', 'Person%20P', 'oneline', {'age':12, 'name':'bar'});"
    >>> ajax_replace_url('foo', 'Person P', name='bar', age=12)
    "javascript: replacePageChunk('foo', 'Person%20P', 'null', {'age':12, 'name':'bar'});"
    """
    params = [repr(nodeid), repr(urlquote(rql))]
    if extraparams and not vid:
        params.append("'null'")
    elif vid:
        params.append(repr(vid))
    if extraparams:
        params.append(json_dumps(extraparams))
    if swap:
        params.append('true')
    return "javascript: replacePageChunk(%s);" % ', '.join(params)