XTB@sddlZddlZddlZddlmZmZmZddlmZddl m Z m Z ddl m Z ddlmZGdd d eZed dZdS) N)Counter OrderedDict defaultdict)partial)AppRegistryNotReadyImproperlyConfigured) lru_cache) AppConfigc@s9eZdZdZfddZdddZddZd d Zd d Zd dZ e j ddddddZ dddZ ddZ ddZddZddZe j ddddZdd Zd!d"Zd#d$Zd%d&Zd'd(Zd)d*Zd+d,ZdS)-Appsz A registry that stores the configuration of installed applications. It also keeps track of models eg. to provide reverse-relations. cCs|dkr1ttjtdr1tdntt|_t|_g|_ d|_ |_ |_ t j|_tt|_|dk r|j|ndS)Nappsz+You must supply an installed_apps argument.F)hasattrsysmodules__name__ RuntimeErrorrr all_models app_configsstored_app_configs apps_ready models_readyready threadingLock_locklist_pending_operationspopulate)selfinstalled_appsr B/home/ubuntu/projects/ifolica/build/django/django/apps/registry.py__init__s"    z Apps.__init__Nc Cs|jr dS|jt|jr$dS|jr<tdnxm|D]e}t|tra|}ntj|}|j|jkrtd|jn||j|j_sz Apps.populate..cSs(g|]\}}|dkr|qS)r r )r$r#countr r r! as z!Apps.populate..z/Application names aren't unique, duplicates: %sz, T)rrrr isinstancer createlabelrrvalues most_commonjoinrrZ import_models clear_cacherget_app_configs)rrentryr%counts duplicatesrr r r!r:s@         z Apps.populatecCs|jstdndS)zL Raises an exception if all apps haven't been imported yet. zApps aren't loaded yet.N)rr)rr r r!check_apps_readyws zApps.check_apps_readycCs|jstdndS)zN Raises an exception if all models haven't been imported yet. zModels aren't loaded yet.N)rr)rr r r!check_models_ready~s zApps.check_models_readycCs|j|jjS)zN Imports applications and returns an iterable of app configs. )r4rr,)rr r r!r0s zApps.get_app_configsc Cs|jy|j|SWnctk r~d|}x8|jD]*}|j|kr@|d|j7}Pq@q@Wt|YnXdS)z Imports applications and returns an app config for the given label. Raises LookupError if no application exists with this label. z!No installed app with label '%s'.z Did you mean '%s'?N)r4rKeyErrorr0r#r+ LookupError)r app_labelmessager%r r r!get_app_configs   zApps.get_app_configmaxsizeFcCsM|jg}x6|jjD]%}|jt|j||q W|S)a Returns a list of all installed models. By default, the following models aren't included: - auto-created models for many-to-many relations without an explicit intermediate table, - models created to satisfy deferred attribute queries, - models that have been swapped out. Set the corresponding keyword argument to True to include such models. )r5rr,extendr get_models)rinclude_auto_createdinclude_swappedresultr%r r r!r=s  #zApps.get_modelscCsJ|j|dkr.|jd\}}n|j|j|jS)a Returns the model matching the given app_label and model_name. As a shortcut, this function also accepts a single argument in the form .. model_name is case-insensitive. Raises LookupError if no application exists with this label, or no model exists with this name in the application. Raises ValueError if called with a single argument that doesn't contain exactly one dot. N.)r5splitr: get_modellower)rr8 model_namer r r!rCs  zApps.get_modelcCs|jj}|j|}||kr|j||jkrt|j||jkrttjd||ftddqtd|||||fn|||<|j ||j dS)NzModel '%s.%s' was already registered. Reloading models is not advised as it can lead to inconsistencies, most notably with related models. stacklevelz7Conflicting '%s' models in application '%s': %s and %s.) _metarErr __module__warningswarnRuntimeWarningrdo_pending_operationsr/)rr8modelrEZ app_modelsr r r!register_models      zApps.register_modelcs0|jtfdd|jjDS)z Checks whether an application with this name exists in the registry. app_name is the full name of the app eg. 'django.contrib.admin'. c3s|]}|jkVqdS)N)r#)r$ac)app_namer r!r&sz$Apps.is_installed..)r4anyrr,)rrQr )rQr! is_installeds zApps.is_installedcCs|jg}xq|jjD]`}|j|jr |t|jd}|dksm|ddkr|j|qq q W|rt|ddddSdS)a Look for an app config containing a given object. object_name is the dotted Python path to the object. Returns the app config for the inner application in case of nesting. Returns None if the object isn't in any registered app config. NrrAkeycSst|j S)N)lenr#)rPr r r!sz0Apps.get_containing_app_config..)r4rr, startswithr#rVappendsorted)rZ object_nameZ candidatesr%subpathr r r!get_containing_app_configs zApps.get_containing_app_configcCsE|j|j|j}|dkrAtd||fn|S)z Similar to get_model(), but doesn't require that an app exists with the given app_label. It's safe to call this method at import time, even while the registry is being populated. NzModel '%s.%s' not registered.)rgetrDr7)rr8rErNr r r!get_registered_models  zApps.get_registered_modelcCsqxj|jddD]V}|jj}|rA||krA|jjS|jjr|jj|kr|jjSqWdS)a For a given model string (e.g. "auth.User"), return the name of the corresponding settings name if it refers to a swappable model. If the referred model is not swappable, return None. This method is decorated with lru_cache because it's performance critical when it comes to migrations. Since the swappable settings don't change after Django has loaded the settings, there is no reason to get the respective settings attribute over and over again. r?TN)r=rHswappedZ swappabler+)rZ to_stringrNr_r r r!get_swappable_settings_names   z Apps.get_swappable_settings_namecsttdd|jD}j|sZtddj|n|jj|jtfdd|jj D|_|j dS)au Restricts the set of installed apps used by get_app_config[s]. available must be an iterable of application names. set_available_apps() must be balanced with unset_available_apps(). Primarily used for performance optimization in TransactionTestCase. This method is safe is the sense that it doesn't trigger any imports. css|]}|jVqdS)N)r#)r$r%r r r!r&(sz*Apps.set_available_apps..z?Available apps isn't a subset of installed apps, extra apps: %sz, c3s0|]&\}}|jkr||fVqdS)N)r#)r$r+r%) availabler r!r&1s N) setr0issubset ValueErrorr.rrYrritemsr/)rra installedr )rar!set_available_appss zApps.set_available_appscCs |jj|_|jdS)zB Cancels a previous call to set_available_apps(). N)rpoprr/)rr r r!unset_available_apps6szApps.unset_available_appscCsi|jstdn|jj|jt|_d|_|_|_|j|j |dS)a Enables a different set of installed apps for get_app_config[s]. installed must be an iterable in the same format as INSTALLED_APPS. set_installed_apps() must be balanced with unset_installed_apps(), even if it exits with an exception. Primarily used as a receiver of the setting_changed signal in tests. This method may trigger new imports, which may add new models to the registry of all imported models. They will stay in the registry even after unset_installed_apps(). Since it isn't possible to replay imports safely (eg. that could lead to registering listeners twice), models are registered when they're imported and never removed. zApp registry isn't ready yet.FN) rrrrYrrrrr/r)rrfr r r!set_installed_apps=s   zApps.set_installed_appscCs7|jj|_d|_|_|_|jdS)zB Cancels a previous call to set_installed_apps(). TN)rrhrrrrr/)rr r r!unset_installed_appsVszApps.unset_installed_appscCsa|jj|jr]xD|jjD]0}x'|jddD]}|jjq?Wq&WndS)z} Clears all internal caches, for methods that alter the app registry. This is mostly used in tests. r>TN)r= cache_clearrrr,rHZ _expire_cache)rr%rNr r r!r/^s   zApps.clear_cachec s|s|n|d|dd}fdd|_yj|}Wn&tk rj|jYn X|dS)a` Take a function and a number of ("app_label", "modelname") tuples, and when all the corresponding models have been imported and registered, call the function with the model classes as its arguments. The function passed to this method must accept exactly n models as arguments, where n=len(model_keys). rr Ncs&tj|}j|dS)N)rfunclazy_model_operation)rNZ next_function)apply_next_model more_modelsrr r!rosz3Apps.lazy_model_operation..apply_next_model)rmr^r7rrY)rfunctionZ model_keysZ next_modelZ model_classr )rorprr!rnns    zApps.lazy_model_operationcCsF|jj|jjf}x'|jj|gD]}||q.WdS)z Take a newly-prepared model and pass it to each function waiting for it. This is called at the very end of `Apps.register_model()`. N)rHr8rErrh)rrNrUrqr r r!rMszApps.do_pending_operations)rrI __qualname____doc__r"rr4r5r0r:rr=rCrOrSr\r^r`rgrirjrkr/rnrMr r r r!r s, &=             'r r)rrrJ collectionsrrr functoolsrZdjango.core.exceptionsrrZ django.utilsrconfigr objectr r r r r r!s