U ߎi4@sddlZddlZddlZddlZddlmZddlmZddlm Z ddl m Z ddl m Z ddlmZGd d d ZGd d d eZGd ddeZdS)N)apps) OutputWrapper) NOT_PROVIDED)timezone)get_docs_version)MigrationLoaderc@sZeZdZdZdddZddZddZd d Zd d Zd dZ ddZ ddZ ddZ dS)MigrationQuestionerz Give the autodetector responses to questions it might have. This base class has a built-in noninteractive mode, but the interactive subclass is what the command-line arguments will use. NcCs |pi|_|pt|_||_dS)N)defaultssetspecified_appsdry_run)selfr r r r]/var/www/html/IITS/school/venv/lib/python3.8/site-packages/django/db/migrations/questioner.py__init__s  zMigrationQuestioner.__init__cCs||jkrdSzt|}Wn"tk r>|jddYSXt|j\}}|dkrf|jddSzt |}Wn"t k r|jddYSXt |ddrt t j|j}n0t|drt|jdkrdSt t|jd}td d |D SdS) z2Should we create an initial migration for the app?T ask_initialFN__file____path__rrcss |]}|dkr|dVqdS)z __init__.pyz.pyN)endswith).0xrrr 7sz2MigrationQuestioner.ask_initial..)r rget_app_config LookupErrorr getrmigrations_modulelabel importlib import_module ImportErrorgetattroslistdirpathdirnamerhasattrlenrlistany)r app_label app_configZmigrations_import_path_r filenamesrrrrs(   zMigrationQuestioner.ask_initialcCsdS)#Adding a NOT NULL field to a model.Nrr field_name model_namerrrask_not_null_addition9sz)MigrationQuestioner.ask_not_null_additioncCsdS)"Changing a NULL field to NOT NULL.Nrr/rrrask_not_null_alteration>sz+MigrationQuestioner.ask_not_null_alterationcCs|jddS)Was this field really renamed? ask_renameFr r)rr1old_namenew_namefield_instancerrrr6CszMigrationQuestioner.ask_renamecCs|jddS)Was this model really renamed?ask_rename_modelFr7)rold_model_statenew_model_staterrrr<Gsz$MigrationQuestioner.ask_rename_modelcCs|jddS)z)Should these migrations really be merged? ask_mergeFr7rr*rrrr?KszMigrationQuestioner.ask_mergecCsdS)(Adding an auto_now_add field to a model.Nrr/rrrask_auto_now_add_additionOsz-MigrationQuestioner.ask_auto_now_add_additioncCsdS).Adding a unique field with a callable default.Nrr/rrr$ask_unique_callable_default_additionTsz8MigrationQuestioner.ask_unique_callable_default_addition)NNN) __name__ __module__ __qualname____doc__rrr2r4r6r<r?rBrDrrrrr s r csreZdZdfdd ZdddZddZdd d Zd d Zd dZddZ ddZ ddZ ddZ ddZ ZS)InteractiveMigrationQuestionerNcs&tj|||d|pttj|_dSN)r r r )superrrsysstdout prompt_output)rr r r rN __class__rrr[s z'InteractiveMigrationQuestioner.__init__cCsh|jj|dddt}|s,|dk r,|S|r@|ddkrX|jjdddt}q,|ddkS)N endingrZynzPlease answer yes or no: y)rNwriteinputlower)rquestiondefaultresultrrr_boolean_inputcs z-InteractiveMigrationQuestioner._boolean_inputcCs|j|t|D] \}}|jd|d|fq|jjdddt}z t|}Wntk rnYn"Xd|krt|krnn|S|jjdddt}qNdS)Nz %s) %srzSelect an option: rRrSrzPlease select a valid option: )rNrV enumeraterWint ValueErrorr')rrYchoicesichoicer[valuerrr _choice_inputms z,InteractiveMigrationQuestioner._choice_inputrRc Cs|jd|r$|jd|d|jd|jd|rLd|}nd}|jj|dd t}|sr|rr|}|s|jd q<|d krtd q>> z>>> rRrSz;Please enter some code, or 'exit' (without quotes) to exit.exitr)datetimerzInvalid input: %sN) rNrVformatrWrLreevalrfr SyntaxError NameError)rrZpromptcodeerrr _ask_default~s4     z+InteractiveMigrationQuestioner._ask_defaultcCsD|js@|d|d|dddg}|dkr8tdn|SdS) r.z.It is impossible to add a non-nullable field 'z' to z{ without specifying a default. 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[y/N]F)r\r*name)rr=r>rurrrr<sz/InteractiveMigrationQuestioner.ask_rename_modelcCs |ddS)Nz Merging will only work if the operations printed above do not conflict with each other (working on different fields or models) Should these migration branches be merged? [y/N]F)r\r@rrrr?sz(InteractiveMigrationQuestioner.ask_mergecCsH|jsD|d|d|dddg}|dkr8tdn |jdd Sd S) rAz#It is impossible to add the field 'z' with 'auto_now_add=True' to zf without providing a default. This is because the database needs something to populate existing rows. zDProvide a one-off default now which will be set on all existing rowsrprqrrz timezone.now)rZNrsrtrrrrBs   z8InteractiveMigrationQuestioner.ask_auto_now_add_additioncCsH|jsDt}|d|d|dd|ddg}|dkrDtdd S) rCz!Callable default on unique field .zO will not generate unique values upon migrating. 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