django.urls.exceptions NoReverseMatch Python Code Examples

# -*- coding: utf-8 -*-
from __future__ import unicode_literals
from inspect import isclass

from django.utils import six
from django.urls import (get_resolver, get_urlconf, resolve, 
                         reverse, NoReverseMatch)
from django.core.exceptions import ImproperlyConfigured

try:
    from django.utils.module_loading import import_string
except ImportError:
    from django.utils.module_loading \
        import import_by_path as import_string

from djng.views.mixins import JSONResponseMixin


def _get_remote_methods_for(view_object, url):
    # view_object can be a view class or instance
    result = {}
    for field in dir(view_object):
        member = getattr(view_object, field, None)
        if callable(member) and hasattr(member, 'allow_rmi'):
            config = {
                'url': url,
                'method': getattr(member, 'allow_rmi'),
                'headers': {'DjNg-Remote-Method': field},
            }
            result.update({field: config})
    return result


def get_all_remote_methods(resolver=None, ns_prefix=''):
    """
    Returns a dictionary to be used for calling 
    ``djangoCall.configure()``, which itself extends the
    Angular API to the client, offering him to call remote methods.
    """
    if not resolver:
        resolver = get_resolver(get_urlconf())
    result = {}
    for name in resolver.reverse_dict.keys():
        if not isinstance(name, six.string_types):
            continue
        try:
            url = reverse(ns_prefix + name)
            resmgr = resolve(url)
            ViewClass = import_string('{0}.{1}'.format(\
                resmgr.func.__module__, resmgr.func.__name__))
            if isclass(ViewClass) and issubclass(ViewClass, 
                                                 JSONResponseMixin):
                result[name] = _get_remote_methods_for(ViewClass, 
                                                       url)
        except (NoReverseMatch, ImproperlyConfigured):
            pass
    for namespace, ns_pattern in resolver.namespace_dict.items():
        sub_res = get_all_remote_methods(ns_pattern[1], 
                                         ns_prefix + namespace + ':')
        if sub_res:
            result[namespace] = sub_res
    return result


def get_current_remote_methods(view):
    if isinstance(view, JSONResponseMixin):
        return _get_remote_methods_for(view, 
                                       view.request.path_info)

import json

from django.conf import settings
try:
    from django.core import urlresolvers
except ImportError:
    from django import urls as urlresolvers
try:
    from django.urls.exceptions import NoReverseMatch
except ImportError:
    from django.core.urlresolvers import NoReverseMatch
from django.utils.html import format_html
from django.utils.safestring import mark_safe

MAX = 75


class LogEntryAdminMixin(object):

    def created(self, obj):
        return obj.timestamp.strftime('%Y-%m-%d %H:%M:%S')
    created.short_description = 'Created'

    def user_url(self, obj):
        if obj.actor:
            app_label, model = settings.AUTH_USER_MODEL.split('.')
            viewname = 'admin:%s_%s_change' % (app_label, model.lower())
            try:
                link = urlresolvers.reverse(viewname, args=[obj.actor.id])
            except NoReverseMatch:
                return u'%s' % (obj.actor)
            return format_html(u'<a href="{}">{}</a>', link, obj.actor)

        return 'system'
    user_url.short_description = 'User'

    def resource_url(self, obj):
        app_label, model = obj.content_type.app_label, obj.content_type.model
        viewname = 'admin:%s_%s_change' % (app_label, model)
        try:
            args = [obj.object_pk] if obj.object_id is None else [obj.object_id]
            link = urlresolvers.reverse(viewname, args=args)
        except NoReverseMatch:
            return obj.object_repr
        else:
            return format_html(u'<a href="{}">{}</a>', link, obj.object_repr)
    resource_url.short_description = 'Resource'

    def msg_short(self, obj):
        if obj.action == 2:
            return ''  # delete
        changes = json.loads(obj.changes)
        s = '' if len(changes) == 1 else 's'
        fields = ', '.join(changes.keys())
        if len(fields) > MAX:
            i = fields.rfind(' ', 0, MAX)
            fields = fields[:i] + ' ..'
        return '%d change%s: %s' % (len(changes), s, fields)
    msg_short.short_description = 'Changes'

    def msg(self, obj):
        if obj.action == 2:
            return ''  # delete
        changes = json.loads(obj.changes)
        msg = '<table><tr><th>#</th><th>Field</th><th>From</th><th>To</th></tr>'
        for i, field in enumerate(sorted(changes), 1):
            value = [i, field] + (['***', '***'] if field == 'password' else changes[field])
            msg += format_html('<tr><td>{}</td><td>{}</td><td>{}</td><td>{}</td></tr>', *value)

        msg += '</table>'
        return mark_safe(msg)
    msg.short_description = 'Changes'

# -*- coding: utf-8 -*-
from __future__ import absolute_import, unicode_literals

import hashlib
import os
from datetime import datetime

from django.conf import settings
from django.core.files.base import ContentFile
from django.db import models
from django.urls import NoReverseMatch, reverse
from django.utils import timezone
from django.utils.encoding import python_2_unicode_compatible
from django.utils.translation import ugettext_lazy as _

from .. import settings as filer_settings
from ..fields.multistorage_file import MultiStorageFileField
from . import mixins
from .foldermodels import Folder


try:
    from polymorphic.models import PolymorphicModel
    from polymorphic.managers import PolymorphicManager
except ImportError:
    # django-polymorphic < 0.8
    from polymorphic import PolymorphicModel, PolymorphicManager


class FileManager(PolymorphicManager):
    def find_all_duplicates(self):
        r = {}
        for file_obj in self.all():
            if file_obj.sha1:
                q = self.filter(sha1=file_obj.sha1)
                if len(q) > 1:
                    r[file_obj.sha1] = q
        return r

    def find_duplicates(self, file_obj):
        return [i for i in self.exclude(pk=file_obj.pk).filter(sha1=file_obj.sha1)]


def is_public_default():
    # not using this setting directly as `is_public` default value
    # so that Django doesn't generate new migrations upon setting change
    return filer_settings.FILER_IS_PUBLIC_DEFAULT


@python_2_unicode_compatible
class File(PolymorphicModel, mixins.IconsMixin):
    file_type = 'File'
    _icon = "file"
    _file_data_changed_hint = None

    folder = models.ForeignKey(
        Folder,
        verbose_name=_('folder'),
        related_name='all_files',
        null=True,
        blank=True,
        on_delete=models.CASCADE,
    )
    file = MultiStorageFileField(_('file'), null=True, blank=True, max_length=255)
    _file_size = models.BigIntegerField(_('file size'), null=True, blank=True)

    sha1 = models.CharField(_('sha1'), max_length=40, blank=True, default='')

    has_all_mandatory_data = models.BooleanField(_('has all mandatory data'), default=False, editable=False)


## ... source file abbreviated to get to the examples ...


    @property
    def canonical_url(self):
        url = ''
        if self.file and self.is_public:
            try:
                url = reverse('canonical', kwargs={
                    'uploaded_at': self.canonical_time,
                    'file_id': self.id
                })
            except NoReverseMatch:
                pass  # No canonical url, return empty string
        return url

## ... source file continues with no further relevant examples ...