2iFddlmZddlmZdZdZGddeZdZdZy) )signals) post_changecleZdZdZfdZddZdZdZdZdZ dZ d Z d Z d Z d Zd ZdZxZS) ChangesMixinaE ChangesMixin keeps track of changes for model instances. It allows you to retrieve the following states from an instance: 1. current_state() The current state of the instance. 2. previous_state() The state of the instance **after** it was created, saved or deleted the last time. 3. old_state() The previous previous_state(), i.e. the state of the instance **before** it was created, saved or deleted the last time. It also provides convenience methods to get changes between states: 1. changes() Changes from previous_state to current_state. 2. previous_changes() Changes from old_state to previous_state. 3. old_changes() Changes from old_state to current_state. And the following methods to determine if an instance was/is persisted in the database: 1. was_persisted() Was the instance persisted in its old state. 2. is_persisted() Is the instance is_persisted in its current state. This schematic tries to illustrate how these methods relate to each other:: after create/save/delete after save/delete now | | | .-----------------------------------.----------------------------------. |\ |\ | | \ | \ | | old_state() | previous_state() | current_state() | | | |-----------------------------------|----------------------------------| | previous_changes() (prev - old) | changes() (cur - prev) | |-----------------------------------|----------------------------------| | old_changes() (cur - old) | .----------------------------------------------------------------------. \ \ was_persisted() is_persisted() cztt| |i|g|_|j dt j jt|jd|jjzt jjt|jd|jjzy)NT) new_instancezdjango-changes-%s)sender dispatch_uid) superr__init___states _save_stater post_saveconnect _post_save __class____name__ post_delete _post_delete)selfargskwargsrs S/var/www/html/acx/venv/lib/python3.12/site-packages/django_model_changes/changes.pyr zChangesMixin.__init__@s lD*D;F;  d+!! t~~,t~~/F/FF "  ## ,t~~/F/FF $ c$|tk(rd|_|jj|j t |jdkDr|jj d|s"tj|j|yy)Nr)r instance) DELETEpkrappend current_statelenpoprsendr)rr event_types rrzChangesMixin._save_stateOss  DG D..01 t|| q LL  Q    DNNT Brc tt}|jjDcgc]}|j|jc}|jjDcgc]}|j|j c}t |Dcgc]}|t||dfc}Scc}wcc}wcc}w)zY Returns a ``field -> value`` dict of the current state of the instance. N)set_meta local_fieldsaddnameattnamedictgetattr)r field_namesf field_names rr"zChangesMixin.current_statebse *.***A*ABQ B-1ZZ-D-DE #E'24#!'$ D"AB45 5 CE4s"B+ "B0B5cnt|jdkDr|jdS|jdS)z Returns a ``field -> value`` dict of the state of the instance after it was created, saved or deleted the previous time. rr)r#rrs rprevious_statezChangesMixin.previous_statems1 t|| q <<? "<<? "rc |jdS)z Returns a ``field -> value`` dict of the state of the instance after it was created, saved or deleted the previous previous time. Returns the previous state if there is no previous previous state. r)rr4s r old_statezChangesMixin.old_statews ||Arc t|jDcgc]\}}|||k7s||||ffc}}Scc}}w)N)r.items)rothercurrentkeywass r_changeszChangesMixin._changessB eHCQTX_`cXdQdcC./effes= = c^|j|j|jS)z Returns a ``field -> (previous value, current value)`` dict of changes from the previous state to the current state. )r>r5r"r4s rchangeszChangesMixin.changess' }}T002D4F4F4HIIrc^|j|j|jS)z Returns a ``field -> (previous value, current value)`` dict of changes from the old state to the current state. )r>r7r"r4s r old_changeszChangesMixin.old_changess% }}T^^-t/A/A/CDDrc^|j|j|jS)z Returns a ``field -> (previous value, current value)`` dict of changes from the old state to the previous state. )r>r7r5r4s rprevious_changeszChangesMixin.previous_changess% }}T^^-t/B/B/DEErcz|jjj}t|j |S)ag Returns true if the instance was persisted (saved) in its old state. Examples:: >>> user = User() >>> user.save() >>> user.was_persisted() False >>> user = User.objects.get(pk=1) >>> user.delete() >>> user.was_persisted() True )r)r r,boolr7)rpk_names r was_persistedzChangesMixin.was_persisteds."**--$$DNN$W-..rc,t|jS)ag Returns true if the instance is persisted (saved) in its current state. Examples: >>> user = User() >>> user.save() >>> user.is_persisted() True >>> user = User.objects.get(pk=1) >>> user.delete() >>> user.is_persisted() False )rFr r4s r is_persistedzChangesMixin.is_persisteds"DGG}rcB|jdi|jS)zE Returns an instance of this model in its old state. )rr7r4s r old_instancezChangesMixin.old_instancest~~1 011rcB|jdi|jS)zJ Returns an instance of this model in its previous state. rL)rr5r4s rprevious_instancezChangesMixin.previous_instances!t~~6 3 3 566r)Fsave)r __module__ __qualname____doc__r rr"r5r7r>r@rBrDrHrJrMrO __classcell__)rs@rrr sO4l  C& 5#gJEF/(&2 7rrc 2|jdtyNF)r r&)rSAVEr rrs rrrs e=rc 2|jdtyrV)rrrXs rrrs e?rN) django.db.modelsrrrWrobjectrrrrLrrr\s/$  767D>@r