pyramid.interfaces
¶
Other Interfaces¶
- interface
IAuthenticationPolicy
[source]¶An object representing a Pyramid authentication policy.
effective_principals
(request)¶Return a sequence representing the effective principals including the userid and any groups belonged to by the current user, including ‘system’ groups such as Everyone and Authenticated.
authenticated_userid
(request)¶Return the authenticated userid or
None
if no authenticated userid can be found. This method of the policy should ensure that a record exists in whatever persistent store is used related to the user (the user should not have been deleted); if a record associated with the current id does not exist in a persistent store, it should returnNone
.
unauthenticated_userid
(request)¶Return the unauthenticated userid. This method performs the same duty as
authenticated_userid
but is permitted to return the userid based only on data present in the request; it needn’t (and shouldn’t) check any persistent store to ensure that the user record related to the request userid exists.
remember
(request, principal, **kw)¶Return a set of headers suitable for ‘remembering’ the principal named
principal
when set in a response. An individual authentication policy and its consumers can decide on the composition and meaning of**kw.
forget
(request)¶Return a set of headers suitable for ‘forgetting’ the current user on subsequent requests.
- interface
IAuthorizationPolicy
[source]¶An object representing a Pyramid authorization policy.
permits
(context, principals, permission)¶Return
True
if any of theprincipals
is allowed thepermission
in the currentcontext
, else returnFalse
principals_allowed_by_permission
(context, permission)¶Return a set of principal identifiers allowed by the
permission
incontext
. This behavior is optional; if you choose to not implement it you should define this method as something which raises aNotImplementedError
. This method will only be called when thepyramid.security.principals_allowed_by_permission
API is used.
- interface
IExceptionResponse
[source]¶Extends:
pyramid.interfaces.IException
,pyramid.interfaces.IResponse
An interface representing a WSGI response which is also an exception object. Register an exception view using this interface as a
context
to apply the registered view for all exception types raised by Pyramid internally (any exception that inherits frompyramid.response.Response
, includingpyramid.httpexceptions.HTTPNotFound
andpyramid.httpexceptions.HTTPForbidden
).
prepare
(environ)¶Prepares the response for being called as a WSGI application
- interface
IRoute
[source]¶Interface representing the type of object returned from
IRoutesMapper.get_route
pregenerator
¶This attribute should either be
None
or a callable object implementing theIRoutePregenerator
interface
generate
(kw)¶Generate a URL based on filling in the dynamic segment markers in the pattern using the
kw
dictionary provided.
name
¶The route name
factory
¶The root factory used by the Pyramid router when this route matches (or
None
)
pattern
¶The route pattern
predicates
¶A sequence of route predicate objects used to determine if a request matches this route or not after basic pattern matching has been completed.
match
(path)¶If the
path
passed to this function can be matched by thepattern
of this route, return a dictionary (the ‘matchdict’), which will contain keys representing the dynamic segment markers in the pattern mapped to values extracted from the providedpath
.If the
path
passed to this function cannot be matched by thepattern
of this route, returnNone
.
- interface
IRoutePregenerator
[source]¶
__call__
(request, elements, kw)¶A pregenerator is a function associated by a developer with a route. The pregenerator for a route is called by
pyramid.request.Request.route_url()
in order to adjust the set of arguments passed to it by the user for special purposes, such as Pylons ‘subdomain’ support. It will influence the URL returned byroute_url
.A pregenerator should return a two-tuple of
(elements, kw)
after examining the originals passed to this function, which are the arguments(request, elements, kw)
. The simplest pregenerator is:def pregenerator(request, elements, kw): return elements, kwYou can employ a pregenerator by passing a
pregenerator
argument to thepyramid.config.Configurator.add_route()
function.
- interface
ISession
[source]¶Extends:
pyramid.interfaces.IDict
An interface representing a session (a web session object, usually accessed via
request.session
.Keys and values of a session must be pickleable.
new_csrf_token
()¶Create and set into the session a new, random cross-site request forgery protection token. Return the token. It will be a string.
peek_flash
(queue='')¶Peek at a queue in the flash storage. The queue remains in flash storage after this message is called. The queue is returned; it is a list of flash messages added by
pyramid.interfaces.ISession.flash()
pop_flash
(queue='')¶Pop a queue from the flash storage. The queue is removed from flash storage after this message is called. The queue is returned; it is a list of flash messages added by
pyramid.interfaces.ISession.flash()
flash
(msg, queue='', allow_duplicate=True)¶Push a flash message onto the end of the flash queue represented by
queue
. An alternate flash message queue can used by passing an optionalqueue
, which must be a string. Ifallow_duplicate
is false, if themsg
already exists in the queue, it will not be readded.
invalidate
()¶Invalidate the session. The action caused by
invalidate
is implementation-dependent, but it should have the effect of completely dissociating any data stored in the session with the current request. It might set response values (such as one which clears a cookie), or it might not.
new
¶Boolean attribute. If
True
, the session is new.
changed
()¶Mark the session as changed. A user of a session should call this method after he or she mutates a mutable object that is a value of the session (it should not be required after mutating the session itself). For example, if the user has stored a dictionary in the session under the key
foo
, and he or she doessession['foo'] = {}
,changed()
needn’t be called. However, if subsequently he or she doessession['foo']['a'] = 1
,changed()
must be called for the sessioning machinery to notice the mutation of the internal dictionary.
get_csrf_token
()¶Return a random cross-site request forgery protection token. It will be a string. If a token was previously added to the session via
new_csrf_token
, that token will be returned. If no CSRF token was previously set into the session,new_csrf_token
will be called, which will create and set a token, and this token will be returned.
created
¶Integer representing Epoch time when created.
- interface
ISessionFactory
[source]¶An interface representing a factory which accepts a request object and returns an ISession object
__call__
(request)¶Return an ISession object
- interface
IRendererInfo
[source]¶An object implementing this interface is passed to every renderer factory constructor as its only argument (conventionally named
info
)
registry
¶The “current” application registry when the renderer was created
name
¶The value passed by the user as the renderer name
settings
¶The deployment settings dictionary related to the current application
type
¶The renderer type name
package
¶The “current package” when the renderer configuration statement was found
- interface
ITemplateRenderer
[source]¶Extends:
pyramid.interfaces.IRenderer
implementation
()¶Return the object that the underlying templating system uses to render the template; it is typically a callable that accepts arbitrary keyword arguments and returns a string or unicode object
- interface
IViewMapperFactory
[source]¶
__call__
(self, **kw)¶Return an object which implements
pyramid.interfaces.IViewMapper
.kw
will be a dictionary containing view-specific arguments, such aspermission
,predicates
,attr
,renderer
, and other items. An IViewMapperFactory is used bypyramid.config.Configurator.add_view()
to provide a plugpoint to extension developers who want to modify potential view callable invocation signatures and response values.
- interface
IViewMapper
[source]¶
__call__
(self, object)¶Provided with an arbitrary object (a function, class, or instance), returns a callable with the call signature
(context, request)
. The callable returned should itself return a Response object. An IViewMapper is returned bypyramid.interfaces.IViewMapperFactory
.
- interface
IDict
[source]¶
clear
()¶Clear all values from the dictionary
__contains__
(k)¶Return
True
if keyk
exists in the dictionary.
popitem
()¶Pop the item with key k from the dictionary and return it as a two-tuple (k, v). If k doesn’t exist, raise a KeyError.
__iter__
()¶Return an iterator over the keys of this dictionary
values
()¶Return a list of values from the dictionary
keys
()¶Return a list of keys from the dictionary
__delitem__
(k)¶Delete an item from the dictionary which is passed to the renderer as the renderer globals dictionary.
__setitem__
(k, value)¶Set a key/value pair into the dictionary
get
(k, default=None)¶Return the value for key
k
from the renderer dictionary, or the default if no such value exists.
setdefault
(k, default=None)¶Return the existing value for key
k
in the dictionary. If no value withk
exists in the dictionary, set thedefault
value into the dictionary under the k name passed. If a value already existed in the dictionary, return it. If a value did not exist in the dictionary, return the default
items
()¶Return a list of [(k,v)] pairs from the dictionary
update
(d)¶Update the renderer dictionary with another dictionary
d
.
pop
(k, default=None)¶Pop the key k from the dictionary and return its value. If k doesn’t exist, and default is provided, return the default. If k doesn’t exist and default is not provided, raise a KeyError.
__getitem__
(k)¶Return the value for key
k
from the dictionary or raise a KeyError if the key doesn’t exist
- interface
IMultiDict
[source]¶Extends:
pyramid.interfaces.IDict
An ordered dictionary that can have multiple values for each key. A multidict adds the methods
getall
,getone
,mixed
,extend
add
, anddict_of_lists
to the normal dictionary interface. A multidict data structure is used asrequest.POST
,request.GET
, andrequest.params
within an Pyramid application.
mixed
()¶Returns a dictionary where the values are either single values, or a list of values when a key/value appears more than once in this dictionary. This is similar to the kind of dictionary often used to represent the variables in a web request.
getall
(key)¶Return a list of all values matching the key (may be an empty list)
extend
(other=None, **kwargs)¶Add a set of keys and values, not overwriting any previous values. The
other
structure may be a list of two-tuples or a dictionary. If**kwargs
is passed, its value will overwrite existing values.
add
(key, value)¶Add the key and value, not overwriting any previous value.
dict_of_lists
()¶Returns a dictionary where each key is associated with a list of values.
getone
(key)¶Get one value matching the key, raising a KeyError if multiple values were found.
- interface
IResponse
[source]¶Represents a WSGI response using the WebOb response interface. Some attribute and method documentation of this interface references RFC 2616.
This interface is most famously implemented by
pyramid.response.Response
and the HTTP exception classes inpyramid.httpexceptions
.
content_md5
¶Gets and sets and deletes the Content-MD5 header. For more information on Content-MD5 see RFC 2616 section 14.14.
age
¶Gets and sets and deletes the Age header. Converts using int. For more information on Age see RFC 2616, section 14.6.
RequestClass
¶Alias for
pyramid.request.Request
content_length
¶Gets and sets and deletes the Content-Length header. For more information on Content-Length see RFC 2616 section 14.17. Converts using int.
unicode_body
¶Get/set the unicode value of the body (using the charset of the Content-Type)
content_location
¶Gets and sets and deletes the Content-Location header. For more information on Content-Location see RFC 2616 section 14.14.
Set (add) a cookie for the response
vary
¶Gets and sets and deletes the Vary header. For more information on Vary see section 14.44. Converts using list.
cache_control
¶Get/set/modify the Cache-Control header (RFC 2616 section 14.9)
last_modified
¶Gets and sets and deletes the Last-Modified header. For more information on Last-Modified see RFC 2616 section 14.29. Converts using HTTP date.
md5_etag
(body=None, set_content_md5=False)¶Generate an etag for the response object using an MD5 hash of the body (the body parameter, or self.body if not given). Sets self.etag. If set_content_md5 is True sets self.content_md5 as well
content_encoding
¶Gets and sets and deletes the Content-Encoding header. For more information about Content-Encoding see RFC 2616 section 14.11.
status_int
¶The status as an integer
headerlist
¶The list of response headers.
cache_expires
¶Get/set the Cache-Control and Expires headers. This sets the response to expire in the number of seconds passed when set.
content_type_params
¶A dictionary of all the parameters in the content type. This is not a view, set to change, modifications of the dict would not be applied otherwise.
body
¶The body of the response, as a str. This will read in the entire app_iter if necessary.
app_iter
¶Returns the app_iter of the response.
If body was set, this will create an app_iter from that body (a single-item list)
Delete a cookie from the client. Note that path and domain must match how the cookie was originally set. This sets the cookie to the empty string, and max_age=0 so that it should expire immediately.
app_iter_range
(start, stop)¶Return a new app_iter built from the response app_iter that serves up only the given start:stop range.
body_file
¶A file-like object that can be used to write to the body. If you passed in a list app_iter, that app_iter will be modified by writes.
allow
¶Gets and sets and deletes the Allow header. Converts using list. For more information on Allow see RFC 2616, Section 14.7.
__call__
(environ, start_response)¶WSGI call interface, should call the start_response callback and should return an iterable
encode_content
(encoding='gzip', lazy=False)¶Encode the content with the given encoding (only gzip and identity are supported).
request
¶Return the request associated with this response if any.
content_type
¶Get/set the Content-Type header (or None), without the charset or any parameters. If you include parameters (or ; at all) when setting the content_type, any existing parameters will be deleted; otherwise they will be preserved.
content_disposition
¶Gets and sets and deletes the Content-Disposition header. For more information on Content-Disposition see RFC 2616 section 19.5.1.
headers
¶The headers in a dictionary-like object
accept_ranges
¶Gets and sets and deletes the Accept-Ranges header. For more information on Accept-Ranges see RFC 2616, section 14.5
pragma
¶Gets and sets and deletes the Pragma header. For more information on Pragma see RFC 2616 section 14.32.
conditional_response_app
(environ, start_response)¶Like the normal __call__ interface, but checks conditional headers:
- If-Modified-Since (304 Not Modified; only on GET, HEAD)
- If-None-Match (304 Not Modified; only on GET, HEAD)
- Range (406 Partial Content; only on GET, HEAD)
Merge the cookies that were set on this response with the given resp object (which can be any WSGI application). If the resp is a webob.Response object, then the other object will be modified in-place.
location
¶Gets and sets and deletes the Location header. For more information on Location see RFC 2616 section 14.30.
retry_after
¶Gets and sets and deletes the Retry-After header. For more information on Retry-After see RFC 2616 section 14.37. Converts using HTTP date or delta seconds.
content_range
¶Gets and sets and deletes the Content-Range header. For more information on Content-Range see section 14.16. Converts using ContentRange object.
status
¶The status string.
content_language
¶Gets and sets and deletes the Content-Language header. Converts using list. For more information about Content-Language see RFC 2616 section 14.12.
environ
¶Get/set the request environ associated with this response, if any.
date
¶Gets and sets and deletes the Date header. For more information on Date see RFC 2616 section 14.18. Converts using HTTP date.
charset
¶Get/set the charset (in the Content-Type)
expires
¶Gets and sets and deletes the Expires header. For more information on Expires see RFC 2616 section 14.21. Converts using HTTP date.
server
¶Gets and sets and deletes the Server header. For more information on Server see RFC216 section 14.38.
copy
()¶Makes a copy of the response and returns the copy.
etag
¶Gets and sets and deletes the ETag header. For more information on ETag see RFC 2616 section 14.19. Converts using Entity tag.
Unset a cookie with the given name (remove it from the response).
www_authenticate
¶Gets and sets and deletes the WWW-Authenticate header. For more information on WWW-Authenticate see RFC 2616 section 14.47. Converts using ‘parse_auth’ and ‘serialize_auth’.
- interface
IIntrospectable
[source]¶An introspectable object used for configuration introspection. In addition to the methods below, objects which implement this interface must also implement all the methods of Python’s
collections.MutableMapping
(the “dictionary interface”), and must be hashable.
order
¶integer order in which registered with introspector (managed by introspector, usually)
discriminator_hash
¶an integer hash of the discriminator
type_name
¶Text type name describing this introspectable
__hash__
()¶Introspectables must be hashable. The typical implementation of an introsepectable’s __hash__ is:
return hash((self.category_name,) + (self.discriminator,))
category_name
¶introspection category name
relate
(category_name, discriminator)¶Indicate an intent to relate this IIntrospectable with another IIntrospectable (the one associated with the
category_name
anddiscriminator
) during action execution.
unrelate
(category_name, discriminator)¶Indicate an intent to break the relationship between this IIntrospectable with another IIntrospectable (the one associated with the
category_name
anddiscriminator
) during action execution.
action_info
¶An IActionInfo object representing the caller that invoked the creation of this introspectable (usually a sentinel until updated during self.register)
discriminator
¶introspectable discriminator (within category) (must be hashable)
title
¶Text title describing this introspectable
register
(introspector, action_info)¶Register this IIntrospectable with an introspector. This method is invoked during action execution. Adds the introspectable and its relations to the introspector.
introspector
should be an object implementing IIntrospector.action_info
should be a object implementing the interfacepyramid.interfaces.IActionInfo
representing the call that registered this introspectable. Pseudocode for an implementation of this method:def register(self, introspector, action_info): self.action_info = action_info introspector.add(self) for methodname, category_name, discriminator in self._relations: method = getattr(introspector, methodname) method((i.category_name, i.discriminator), (category_name, discriminator))
- interface
IIntrospector
[source]¶
get_category
(category_name, default=None, sort_key=None)¶Get a sequence of dictionaries in the form
[{'introspectable':IIntrospectable, 'related':[sequence of related IIntrospectables]}, ...]
where each introspectable is part of the category associated withcategory_name
.If the category named
category_name
does not exist in the introspector the value passed asdefault
will be returned.If
sort_key
isNone
, the sequence will be returned in the order the introspectables were added to the introspector. Otherwise, sort_key should be a function that accepts an IIntrospectable and returns a value from it (ala thekey
function of Python’ssorted
callable).
relate
(*pairs)¶Given any number of of
(category_name, discriminator)
pairs passed as positional arguments, relate the associated introspectables to each other. The introspectable related to each pair must have already been added via.add
or.add_intr
; aKeyError
will result if this is not true. An error will not be raised if any pair has already been associated with another.This method is not typically called directly, instead it’s called indirectly by
pyramid.interfaces.IIntrospector.register()
add
(intr)¶Add the IIntrospectable
intr
(use instead ofpyramid.interfaces.IIntrospector.add()
when you have a custom IIntrospectable). Replaces any existing introspectable registered using the same category/discriminator.This method is not typically called directly, instead it’s called indirectly by
pyramid.interfaces.IIntrospector.register()
categorized
(sort_key=None)¶Get a sequence of tuples in the form
[(category_name, [{'introspectable':IIntrospectable, 'related':[sequence of related IIntrospectables]}, ...])]
representing all known introspectables. Ifsort_key
isNone
, each introspectables sequence will be returned in the order the introspectables were added to the introspector. Otherwise, sort_key should be a function that accepts an IIntrospectable and returns a value from it (ala thekey
function of Python’ssorted
callable).
remove
(category_name, discriminator)¶Remove the IIntrospectable related to
category_name
anddiscriminator
from the introspector, and fix up any relations that the introspectable participates in. This method will not raise an error if an introspectable related to the category name and discriminator does not exist.
unrelate
(*pairs)¶Given any number of of
(category_name, discriminator)
pairs passed as positional arguments, unrelate the associated introspectables from each other. The introspectable related to each pair must have already been added via.add
or.add_intr
; aKeyError
will result if this is not true. An error will not be raised if any pair is not already related to another.This method is not typically called directly, instead it’s called indirectly by
pyramid.interfaces.IIntrospector.register()
categories
()¶Return a sorted sequence of category names known by this introspector
get
(category_name, discriminator, default=None)¶Get the IIntrospectable related to the category_name and the discriminator (or discriminator hash)
discriminator
. If it does not exist in the introspector, return the value ofdefault
Return a sequence of IIntrospectables related to the IIntrospectable
intr
. Return the empty sequence if no relations for exist.
- interface
IActionInfo
[source]¶Class which provides code introspection capability associated with an action. The ParserInfo class used by ZCML implements the same interface.
__str__
()¶Return a representation of the action information (including source code from file, if possible)
line
¶Starting line number in file (as an integer) of action-invoking code.This will be
None
if the value could not be determined.
file
¶Filename of action-invoking code as a string
- interface
IAssetDescriptor
[source]¶Describes an asset.
abspath
()¶Returns an absolute path in the filesystem to the asset.
listdir
()¶Returns iterable of filenames of directory contents. Raises an exception if asset is not a directory.
absspec
()¶Returns the absolute asset specification for this asset (e.g.
mypackage:templates/foo.pt
).
isdir
()¶Returns True if the asset is a directory, otherwise returns False.
stream
()¶Returns an input stream for reading asset contents. Raises an exception if the asset is a directory or does not exist.
exists
()¶Returns True if asset exists, otherwise returns False.