import inspect
import os
from importlib import import_module
from django.apps import apps
from django.conf import settings
from django.contrib import admin
from django.contrib.admin.views.decorators import staff_member_required
from django.contrib.admindocs import utils
from django.contrib.admindocs.utils import (
replace_named_groups, replace_unnamed_groups,
)
from django.core.exceptions import ImproperlyConfigured, ViewDoesNotExist
from django.db import models
from django.http import Http404
from django.template.engine import Engine
from django.urls import get_mod_func, get_resolver, get_urlconf, reverse
from django.utils.decorators import method_decorator
from django.utils.inspect import (
func_accepts_kwargs, func_accepts_var_args, func_has_no_args,
get_func_full_args,
)
from django.utils.translation import ugettext as _
from django.views.generic import TemplateView
from .utils import get_view_name
# Exclude methods starting with these strings from documentation
MODEL_METHODS_EXCLUDE = ('_', 'add_', 'delete', 'save', 'set_')
class BaseAdminDocsView(TemplateView):
"""
Base view for admindocs views.
"""
@method_decorator(staff_member_required)
def dispatch(self, request, *args, **kwargs):
if not utils.docutils_is_available:
# Display an error message for people without docutils
self.template_name = 'admin_doc/missing_docutils.html'
return self.render_to_response(admin.site.each_context(request))
return super(BaseAdminDocsView, self).dispatch(request, *args, **kwargs)
def get_context_data(self, **kwargs):
kwargs.update({'root_path': reverse('admin:index')})
kwargs.update(admin.site.each_context(self.request))
return super(BaseAdminDocsView, self).get_context_data(**kwargs)
class BookmarkletsView(BaseAdminDocsView):
template_name = 'admin_doc/bookmarklets.html'
def get_context_data(self, **kwargs):
context = super(BookmarkletsView, self).get_context_data(**kwargs)
context.update({
'admin_url': "%s://%s%s" % (
self.request.scheme, self.request.get_host(), context['root_path'])
})
return context
class TemplateTagIndexView(BaseAdminDocsView):
template_name = 'admin_doc/template_tag_index.html'
def get_context_data(self, **kwargs):
tags = []
try:
engine = Engine.get_default()
except ImproperlyConfigured:
# Non-trivial TEMPLATES settings aren't supported (#24125).
pass
else:
app_libs = sorted(engine.template_libraries.items())
builtin_libs = [('', lib) for lib in engine.template_builtins]
for module_name, library in builtin_libs + app_libs:
for tag_name, tag_func in library.tags.items():
title, body, metadata = utils.parse_docstring(tag_func.__doc__)
if title:
title = utils.parse_rst(title, 'tag', _('tag:') + tag_name)
if body:
body = utils.parse_rst(body, 'tag', _('tag:') + tag_name)
for key in metadata:
metadata[key] = utils.parse_rst(metadata[key], 'tag', _('tag:') + tag_name)
tag_library = module_name.split('.')[-1]
tags.append({
'name': tag_name,
'title': title,
'body': body,
'meta': metadata,
'library': tag_library,
})
kwargs.update({'tags': tags})
return super(TemplateTagIndexView, self).get_context_data(**kwargs)
class TemplateFilterIndexView(BaseAdminDocsView):
template_name = 'admin_doc/template_filter_index.html'
def get_context_data(self, **kwargs):
filters = []
try:
engine = Engine.get_default()
except ImproperlyConfigured:
# Non-trivial TEMPLATES settings aren't supported (#24125).
pass
else:
app_libs = sorted(engine.template_libraries.items())
builtin_libs = [('', lib) for lib in engine.template_builtins]
for module_name, library in builtin_libs + app_libs:
for filter_name, filter_func in library.filters.items():
title, body, metadata = utils.parse_docstring(filter_func.__doc__)
if title:
title = utils.parse_rst(title, 'filter', _('filter:') + filter_name)
if body:
body = utils.parse_rst(body, 'filter', _('filter:') + filter_name)
for key in metadata:
metadata[key] = utils.parse_rst(metadata[key], 'filter', _('filter:') + filter_name)
tag_library = module_name.split('.')[-1]
filters.append({
'name': filter_name,
'title': title,
'body': body,
'meta': metadata,
'library': tag_library,
})
kwargs.update({'filters': filters})
return super(TemplateFilterIndexView, self).get_context_data(**kwargs)
class ViewIndexView(BaseAdminDocsView):
template_name = 'admin_doc/view_index.html'
def get_context_data(self, **kwargs):
views = []
urlconf = import_module(settings.ROOT_URLCONF)
view_functions = extract_views_from_urlpatterns(urlconf.urlpatterns)
for (func, regex, namespace, name) in view_functions:
views.append({
'full_name': get_view_name(func),
'url': simplify_regex(regex),
'url_name': ':'.join((namespace or []) + (name and [name] or [])),
'namespace': ':'.join((namespace or [])),
'name': name,
})
kwargs.update({'views': views})
return super(ViewIndexView, self).get_context_data(**kwargs)
class ViewDetailView(BaseAdminDocsView):
template_name = 'admin_doc/view_detail.html'
@staticmethod
def _get_view_func(view):
urlconf = get_urlconf()
if get_resolver(urlconf)._is_callback(view):
mod, func = get_mod_func(view)
try:
# Separate the module and function, e.g.
# 'mymodule.views.myview' -> 'mymodule.views', 'myview').
return getattr(import_module(mod), func)
except ImportError:
# Import may fail because view contains a class name, e.g.
# 'mymodule.views.ViewContainer.my_view', so mod takes the form
# 'mymodule.views.ViewContainer'. Parse it again to separate
# the module and class.
mod, klass = get_mod_func(mod)
return getattr(getattr(import_module(mod), klass), func)
except AttributeError:
# PY2 generates incorrect paths for views that are methods,
# e.g. 'mymodule.views.ViewContainer.my_view' will be
# listed as 'mymodule.views.my_view' because the class name
# can't be detected. This causes an AttributeError when
# trying to resolve the view.
return None
def get_context_data(self, **kwargs):
view = self.kwargs['view']
view_func = self._get_view_func(view)
if view_func is None:
raise Http404
title, body, metadata = utils.parse_docstring(view_func.__doc__)
if title:
title = utils.parse_rst(title, 'view', _('view:') + view)
if body:
body = utils.parse_rst(body, 'view', _('view:') + view)
for key in metadata:
metadata[key] = utils.parse_rst(metadata[key], 'model', _('view:') + view)
kwargs.update({
'name': view,
'summary': title,
'body': body,
'meta': metadata,
})
return super(ViewDetailView, self).get_context_data(**kwargs)
class ModelIndexView(BaseAdminDocsView):
template_name = 'admin_doc/model_index.html'
def get_context_data(self, **kwargs):
m_list = [m._meta for m in apps.get_models()]
kwargs.update({'models': m_list})
return super(ModelIndexView, self).get_context_data(**kwargs)
class ModelDetailView(BaseAdminDocsView):
template_name = 'admin_doc/model_detail.html'
def get_context_data(self, **kwargs):
model_name = self.kwargs['model_name']
# Get the model class.
try:
app_config = apps.get_app_config(self.kwargs['app_label'])
except LookupError:
raise Http404(_("App %(app_label)r not found") % self.kwargs)
try:
model = app_config.get_model(model_name)
except LookupError:
raise Http404(_("Model %(model_name)r not found in app %(app_label)r") % self.kwargs)
opts = model._meta
title, body, metadata = utils.parse_docstring(model.__doc__)
if title:
title = utils.parse_rst(title, 'model', _('model:') + model_name)
if body:
body = utils.parse_rst(body, 'model', _('model:') + model_name)
# Gather fields/field descriptions.
fields = []
for field in opts.fields:
# ForeignKey is a special case since the field will actually be a
# descriptor that returns the other object
if isinstance(field, models.ForeignKey):
data_type = field.remote_field.model.__name__
app_label = field.remote_field.model._meta.app_label
verbose = utils.parse_rst(
(_("the related `%(app_label)s.%(data_type)s` object") % {
'app_label': app_label, 'data_type': data_type,
}),
'model',
_('model:') + data_type,
)
else:
data_type = get_readable_field_data_type(field)
verbose = field.verbose_name
fields.append({
'name': field.name,
'data_type': data_type,
'verbose': verbose or '',
'help_text': field.help_text,
})
# Gather many-to-many fields.
for field in opts.many_to_many:
data_type = field.remote_field.model.__name__
app_label = field.remote_field.model._meta.app_label
verbose = _("related `%(app_label)s.%(object_name)s` objects") % {
'app_label': app_label,
'object_name': data_type,
}
fields.append({
'name': "%s.all" % field.name,
"data_type": 'List',
'verbose': utils.parse_rst(_("all %s") % verbose, 'model', _('model:') + opts.model_name),
})
fields.append({
'name': "%s.count" % field.name,
'data_type': 'Integer',
'verbose': utils.parse_rst(_("number of %s") % verbose, 'model', _('model:') + opts.model_name),
})
methods = []
# Gather model methods.
for func_name, func in model.__dict__.items():
if inspect.isfunction(func):
try:
for exclude in MODEL_METHODS_EXCLUDE:
if func_name.startswith(exclude):
raise StopIteration
except StopIteration:
continue
verbose = func.__doc__
if verbose:
verbose = utils.parse_rst(utils.trim_docstring(verbose), 'model', _('model:') + opts.model_name)
# If a method has no arguments, show it as a 'field', otherwise
# as a 'method with arguments'.
if func_has_no_args(func) and not func_accepts_kwargs(func) and not func_accepts_var_args(func):
fields.append({
'name': func_name,
'data_type': get_return_data_type(func_name),
'verbose': verbose or '',
})
else:
arguments = get_func_full_args(func)
# Join arguments with ', ' and in case of default value,
# join it with '='. Use repr() so that strings will be
# correctly displayed.
print_arguments = ', '.join([
'='.join(list(arg_el[:1]) + [repr(el) for el in arg_el[1:]])
for arg_el in arguments
])
methods.append({
'name': func_name,
'arguments': print_arguments,
'verbose': verbose or '',
})
# Gather related objects
for rel in opts.related_objects:
verbose = _("related `%(app_label)s.%(object_name)s` objects") % {
'app_label': rel.related_model._meta.app_label,
'object_name': rel.related_model._meta.object_name,
}
accessor = rel.get_accessor_name()
fields.append({
'name': "%s.all" % accessor,
'data_type': 'List',
'verbose': utils.parse_rst(_("all %s") % verbose, 'model', _('model:') + opts.model_name),
})
fields.append({
'name': "%s.count" % accessor,
'data_type': 'Integer',
'verbose': utils.parse_rst(_("number of %s") % verbose, 'model', _('model:') + opts.model_name),
})
kwargs.update({
'name': '%s.%s' % (opts.app_label, opts.object_name),
'summary': title,
'description': body,
'fields': fields,
'methods': methods,
})
return super(ModelDetailView, self).get_context_data(**kwargs)
class TemplateDetailView(BaseAdminDocsView):
template_name = 'admin_doc/template_detail.html'
def get_context_data(self, **kwargs):
template = self.kwargs['template']
templates = []
try:
default_engine = Engine.get_default()
except ImproperlyConfigured:
# Non-trivial TEMPLATES settings aren't supported (#24125).
pass
else:
# This doesn't account for template loaders (#24128).
for index, directory in enumerate(default_engine.dirs):
template_file = os.path.join(directory, template)
if os.path.exists(template_file):
with open(template_file) as f:
template_contents = f.read()
else:
template_contents = ''
templates.append({
'file': template_file,
'exists': os.path.exists(template_file),
'contents': template_contents,
'order': index,
})
kwargs.update({
'name': template,
'templates': templates,
})
return super(TemplateDetailView, self).get_context_data(**kwargs)
####################
# Helper functions #
####################
def get_return_data_type(func_name):
"""Return a somewhat-helpful data type given a function name"""
if func_name.startswith('get_'):
if func_name.endswith('_list'):
return 'List'
elif func_name.endswith('_count'):
return 'Integer'
return ''
def get_readable_field_data_type(field):
"""Returns the description for a given field type, if it exists,
Fields' descriptions can contain format strings, which will be interpolated
against the values of field.__dict__ before being output."""
return field.description % field.__dict__
def extract_views_from_urlpatterns(urlpatterns, base='', namespace=None):
"""
Return a list of views from a list of urlpatterns.
Each object in the returned list is a two-tuple: (view_func, regex)
"""
views = []
for p in urlpatterns:
if hasattr(p, 'url_patterns'):
try:
patterns = p.url_patterns
except ImportError:
continue
views.extend(extract_views_from_urlpatterns(
patterns,
base + p.regex.pattern,
(namespace or []) + (p.namespace and [p.namespace] or [])
))
elif hasattr(p, 'callback'):
try:
views.append((p.callback, base + p.regex.pattern,
namespace, p.name))
except ViewDoesNotExist:
continue
else:
raise TypeError(_("%s does not appear to be a urlpattern object") % p)
return views
def simplify_regex(pattern):
r"""
Clean up urlpattern regexes into something more readable by humans. For
example, turn "^(?P<sport_slug>\w+)/athletes/(?P<athlete_slug>\w+)/$"
into "/<sport_slug>/athletes/<athlete_slug>/".
"""
pattern = replace_named_groups(pattern)
pattern = replace_unnamed_groups(pattern)
# clean up any outstanding regex-y characters.
pattern = pattern.replace('^', '').replace('$', '').replace('?', '')
if not pattern.startswith('/'):
pattern = '/' + pattern
return pattern