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# -*- coding: utf-8 -*-
from cms.exceptions import SubClassNeededError, Deprecated
from cms.models import CMSPlugin
from django import forms
from django.conf import settings
from django.contrib import admin
from django.core.exceptions import ImproperlyConfigured
from django.db.models.options import get_verbose_name
from django.forms.models import ModelForm
from django.utils.encoding import smart_str
from django.utils.translation import ugettext_lazy as _
class CMSPluginBaseMetaclass(forms.MediaDefiningClass):
"""
Ensure the CMSPlugin subclasses have sane values and set some defaults if
they're not given.
"""
def __new__(cls, name, bases, attrs):
super_new = super(CMSPluginBaseMetaclass, cls).__new__
parents = [base for base in bases if isinstance(base, CMSPluginBaseMetaclass)]
if not parents:
# If this is CMSPluginBase itself, and not a subclass, don't do anything
return super_new(cls, name, bases, attrs)
new_plugin = super_new(cls, name, bases, attrs)
# validate model is actually a CMSPlugin subclass.
if not issubclass(new_plugin.model, CMSPlugin):
raise SubClassNeededError(
"The 'model' attribute on CMSPluginBase subclasses must be "
"either CMSPlugin or a subclass of CMSPlugin. %r on %r is not."
% (new_plugin.model, new_plugin)
)
# validate the template:
if not hasattr(new_plugin, 'render_template'):
raise ImproperlyConfigured(
"CMSPluginBase subclasses must have a render_template attribute"
)
# Set the default form
if not new_plugin.form:
form_meta_attrs = {
'model': new_plugin.model,
'exclude': ('position', 'placeholder', 'language', 'plugin_type')
}
form_attrs = {
'Meta': type('Meta', (object,), form_meta_attrs)
}
new_plugin.form = type('%sForm' % name, (ModelForm,), form_attrs)
# Set the default fieldsets
if not new_plugin.fieldsets:
basic_fields = []
advanced_fields = []
for f in new_plugin.model._meta.fields:
if not f.auto_created and f.editable:
if hasattr(f,'advanced'):
advanced_fields.append(f.name)
else: basic_fields.append(f.name)
if advanced_fields:
new_plugin.fieldsets = [
(
None,
{
'fields': basic_fields
}
),
(
_('Advanced options'),
{
'fields' : advanced_fields,
'classes' : ('collapse',)
}
)
]
# Set default name
if not new_plugin.name:
new_plugin.name = get_verbose_name(new_plugin.__name__)
return new_plugin
class CMSPluginBase(admin.ModelAdmin):
__metaclass__ = CMSPluginBaseMetaclass
name = ""
form = None
change_form_template = "admin/cms/page/plugin_change_form.html"
# Should the plugin be rendered in the admin?
admin_preview = True
render_template = None
# Should the plugin be rendered at all, or doesn't it have any output?
render_plugin = True
model = CMSPlugin
text_enabled = False
page_only = False
opts = {}
module = None #track in which module/application belongs
def __init__(self, model=None, admin_site=None):
if admin_site:
super(CMSPluginBase, self).__init__(self.model, admin_site)
self.object_successfully_changed = False
# variables will be overwritten in edit_view, so we got required
self.cms_plugin_instance = None
self.placeholder = None
self.page = None
def render(self, context, instance, placeholder):
raise NotImplementedError("render needs to be implemented")
@property
def parent(self):
return self.cms_plugin_instance.parent
def render_change_form(self, request, context, add=False, change=False, form_url='', obj=None):
"""
We just need the popup interface here
"""
context.update({
'preview': not "no_preview" in request.GET,
'is_popup': True,
'plugin': self.cms_plugin_instance,
'CMS_MEDIA_URL': settings.CMS_MEDIA_URL,
})
return super(CMSPluginBase, self).render_change_form(request, context, add, change, form_url, obj)
def has_add_permission(self, request, *args, **kwargs):
"""Permission handling change - if user is allowed to change the page
he must be also allowed to add/change/delete plugins..
Not sure if there will be plugin permission requirement in future, but
if, then this must be changed.
"""
return self.cms_plugin_instance.has_change_permission(request)
has_delete_permission = has_change_permission = has_add_permission
def save_model(self, request, obj, form, change):
"""
Override original method, and add some attributes to obj
This have to be made, because if object is newly created, he must know
where he lives.
Attributes from cms_plugin_instance have to be assigned to object, if
is cms_plugin_instance attribute available.
"""
if getattr(self, "cms_plugin_instance"):
# assign stuff to object
fields = self.cms_plugin_instance._meta.fields
for field in fields:
# assign all the fields - we can do this, because object is
# subclassing cms_plugin_instance (one to one relation)
value = getattr(self.cms_plugin_instance, field.name)
setattr(obj, field.name, value)
# remember the saved object
self.saved_object = obj
return super(CMSPluginBase, self).save_model(request, obj, form, change)
def response_change(self, request, obj):
"""
Just set a flag, so we know something was changed, and can make
new version if reversion installed.
New version will be created in admin.views.edit_plugin
"""
self.object_successfully_changed = True
return super(CMSPluginBase, self).response_change(request, obj)
def response_add(self, request, obj):
"""
Just set a flag, so we know something was changed, and can make
new version if reversion installed.
New version will be created in admin.views.edit_plugin
"""
self.object_successfully_changed = True
return super(CMSPluginBase, self).response_add(request, obj)
def log_addition(self, request, object):
pass
def log_change(self, request, object, message):
pass
def log_deletion(self, request, object, object_repr):
pass
def icon_src(self, instance):
"""
Overwrite this if text_enabled = True
Return the URL for an image to be used for an icon for this
plugin instance in a text editor.
"""
return ""
def icon_alt(self, instance):
"""
Overwrite this if necessary if text_enabled = True
Return the 'alt' text to be used for an icon representing
the plugin object in a text editor.
"""
return "%s - %s" % (unicode(self.name), unicode(instance))
def __repr__(self):
return smart_str(self.name)
def __unicode__(self):
return self.name
#===========================================================================
# Deprecated APIs
#===========================================================================
@property
def pluginmedia(self):
raise Deprecated(
"CMSPluginBase.pluginmedia is deprecated in favor of django-sekizai"
)
def get_plugin_media(self, request, context, plugin):
raise Deprecated(
"CMSPluginBase.get_plugin_media is deprecated in favor of django-sekizai"
)
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