def dispatch_request(self):
"""Does the request dispatching. Matches the URL and returns the
return value of the view or error handler. This does not have to
be a response object. In order to convert the return value to a
proper response object, call :func:`make_response`.
"""
try:
endpoint, values = self.match_request()
return self.view_functions[endpoint](**values)
except HTTPException, e:
handler = self.error_handlers.get(e.code)
if handler is None:
return e
return handler(e)
except Exception, e:
handler = self.error_handlers.get(500)
if self.debug or handler is None:
raise
return handler(e)
python类HTTPException()的实例源码
def dispatch_request(self):
"""
???dispatch -> ?????
request -> function -> response HTTP????
function -> ?????
"""
try:
endpoint, values = self.match_request()
return self.route_functions[endpoint](**values)
except HTTPException, e:
handler = self.error_handlers.get(e.code)
if handler is None:
return e
return handler(e)
except Exception, e:
handler = self.error_handlers.get(500)
if self.debug or handler is None:
raise
return handler(e)
def match_request(self):
"""Can be overridden by a subclass to hook into the matching
of the request.
"""
try:
url_rule, self.request.view_args = \
self.url_adapter.match(return_rule=True)
self.request.url_rule = url_rule
except HTTPException as e:
self.request.routing_exception = e
def del_category(id):
"""Delete a category."""
try:
category = project_repo.get_category(id)
if category:
if len(cached_cat.get_all()) > 1:
ensure_authorized_to('delete', category)
if request.method == 'GET':
response = dict(template='admin/del_category.html',
title=gettext('Delete Category'),
category=category,
form=dict(csrf=generate_csrf()))
return handle_content_type(response)
if request.method == 'POST':
project_repo.delete_category(category)
msg = gettext("Category deleted")
flash(msg, 'success')
cached_cat.reset()
return redirect_content_type(url_for(".categories"))
else:
msg = gettext('Sorry, it is not possible to delete the only'
' available category. You can modify it, '
' click the edit button')
flash(msg, 'warning')
return redirect_content_type(url_for('.categories'))
else:
abort(404)
except HTTPException:
raise
except Exception as e: # pragma: no cover
current_app.logger.error(e)
return abort(500)
def update_category(id):
"""Update a category."""
try:
category = project_repo.get_category(id)
if category:
ensure_authorized_to('update', category)
form = CategoryForm(obj=category)
form.populate_obj(category)
if request.method == 'GET':
response = dict(template='admin/update_category.html',
title=gettext('Update Category'),
category=category,
form=form)
return handle_content_type(response)
if request.method == 'POST':
form = CategoryForm(request.body)
if form.validate():
slug = form.name.data.lower().replace(" ", "")
new_category = Category(id=form.id.data,
name=form.name.data,
short_name=slug)
project_repo.update_category(new_category)
cached_cat.reset()
msg = gettext("Category updated")
flash(msg, 'success')
return redirect_content_type(url_for(".categories"))
else:
msg = gettext("Please correct the errors")
flash(msg, 'success')
response = dict(template='admin/update_category.html',
title=gettext('Update Category'),
category=category,
form=form)
return handle_content_type(response)
else:
abort(404)
except HTTPException:
raise
except Exception as e: # pragma: no cover
current_app.logger.error(e)
return abort(500)
def match_request(self):
"""Can be overridden by a subclass to hook into the matching
of the request.
"""
try:
url_rule, self.request.view_args = \
self.url_adapter.match(return_rule=True)
self.request.url_rule = url_rule
except HTTPException as e:
self.request.routing_exception = e
def match_request(self):
"""Can be overridden by a subclass to hook into the matching
of the request.
"""
try:
url_rule, self.request.view_args = \
self.url_adapter.match(return_rule=True)
self.request.url_rule = url_rule
except HTTPException as e:
self.request.routing_exception = e
def match_request(self):
"""Can be overridden by a subclass to hook into the matching
of the request.
"""
try:
url_rule, self.request.view_args = \
self.url_adapter.match(return_rule=True)
self.request.url_rule = url_rule
except HTTPException as e:
self.request.routing_exception = e
def match_request(self):
"""Can be overridden by a subclass to hook into the matching
of the request.
"""
try:
url_rule, self.request.view_args = \
self.url_adapter.match(return_rule=True)
self.request.url_rule = url_rule
except HTTPException as e:
self.request.routing_exception = e
def dispatch_request(self, request):
"""
????~????
request.environ -> url_map bind to environ ->
caller(???) -> ins(??????) -> current_method(????http??)
-> current_method(ins): ??????????????? -> res(????)
-> make_response(??????????)
?????????????????
"""
adapter = self.url_map.bind_to_environ(request.environ)
try:
endpoint, values = adapter.match()
caller = [
caller_rule[0] for caller_rule in \
self.url_map._caller_rule \
if endpoint == caller_rule[0].__name__
][0]
ins = caller(app_name=self.app_name, **values)
methods = adapter.default_method
current_method = getattr(caller, request.method.lower(), None)
if not current_method:
return self.make_response("Method not allowed")
res = current_method(ins)
return self.make_response(res, request) or \
self.make_response("rv is NoneType...")
except NotFound, e:
return self.error_404()
except HTTPException, e:
return e
def dispatch_request(self, request):
adapter = self.url_map.bind_to_environ(request.environ)
try:
endpoint, values = adapter.match()
method = getattr(self, 'endpoint_{}'.format(endpoint))
return method(adapter, request, **values)
except HTTPException, e:
return e
def allowed_methods(self, path_info=None):
"""Returns the valid methods that match for a given path.
.. versionadded:: 0.7
"""
try:
self.match(path_info, method='--')
except MethodNotAllowed as e:
return e.valid_methods
except HTTPException as e:
pass
return []
def match_request(self):
"""Can be overridden by a subclass to hook into the matching
of the request.
"""
try:
url_rule, self.request.view_args = \
self.url_adapter.match(return_rule=True)
self.request.url_rule = url_rule
except HTTPException as e:
self.request.routing_exception = e
def allowed_methods(self, path_info=None):
"""Returns the valid methods that match for a given path.
.. versionadded:: 0.7
"""
try:
self.match(path_info, method='--')
except MethodNotAllowed as e:
return e.valid_methods
except HTTPException as e:
pass
return []
def match_request(self):
"""Can be overridden by a subclass to hook into the matching
of the request.
"""
try:
url_rule, self.request.view_args = \
self.url_adapter.match(return_rule=True)
self.request.url_rule = url_rule
except HTTPException as e:
self.request.routing_exception = e
def dispatch_request(self, request):
adapter = self.url_map.bind_to_environ(request.environ)
try:
endpoint, values = adapter.match()
return getattr(self, 'on_' + endpoint)(request, **values)
except HTTPException as e:
return e
def allowed_methods(self, path_info=None):
"""Returns the valid methods that match for a given path.
.. versionadded:: 0.7
"""
try:
self.match(path_info, method='--')
except MethodNotAllowed as e:
return e.valid_methods
except HTTPException as e:
pass
return []
def match_request(self):
"""Can be overridden by a subclass to hook into the matching
of the request.
"""
try:
url_rule, self.request.view_args = \
self.url_adapter.match(return_rule=True)
self.request.url_rule = url_rule
except HTTPException as e:
self.request.routing_exception = e
def match_request(self):
"""Can be overridden by a subclass to hook into the matching
of the request.
"""
try:
url_rule, self.request.view_args = \
self.url_adapter.match(return_rule=True)
self.request.url_rule = url_rule
except HTTPException as e:
self.request.routing_exception = e
def match_request(self):
"""Can be overridden by a subclass to hook into the matching
of the request.
"""
try:
url_rule, self.request.view_args = \
self.url_adapter.match(return_rule=True)
self.request.url_rule = url_rule
except HTTPException as e:
self.request.routing_exception = e
