o
    ×ŸŽiÎž  ã                   @   sV  d dl Z d dlmZ d dlmZ d dlmZ d dlmZ d dl	m
Z
 d dl	mZ d dlmZ d d	lmZ d d
lmZ d dlmZmZ d dlmZ d dlmZ d dlmZmZ d dlmZ d dlm Z  d dl!m"Z" d dl#m$Z$ ddl%m&Z& ddl'm(Z( d'dd„Z)dd„ Z*dd„ Z+dd„ Z,G dd „ d ƒZ-G d!d"„ d"eƒZ.G d#d$„ d$e
ƒZ/G d%d&„ d&ƒZ0dS )(é    N)Údefaultdict)Úcontextmanager)Úpartial)Ú	AppConfig)ÚApps©Úapps)Úsettings)ÚFieldDoesNotExist)Úmodels)Úfield_is_referencedÚget_references)ÚNOT_PROVIDED)ÚRECURSIVE_RELATIONSHIP_CONSTANT)ÚDEFAULT_NAMESÚnormalize_together)Úmake_model_tuple)Úcached_property)Úimport_string)Úget_docs_versioné   )ÚInvalidBasesError)Úresolve_relationÚ c                 C   sF   t | tƒr|  dd¡}t|ƒdkrt|ƒS ||d fS | jj| jjfS )NÚ.r   é   r   )Ú
isinstanceÚstrÚsplitÚlenÚtupleÚ_metaÚ	app_labelÚ
model_name)Úmodelr"   r   © r%   údC:\Users\psant\Downloads\Anu Raj Backend\school\venv\Lib\site-packages\django/db/migrations/state.pyÚ_get_app_label_and_model_name   s   
 r'   c                 C   s†   dd„ |   ¡ D ƒ}tƒ }| jjddd�D ]}|jr0|jdur0t|jtƒs0| |j	¡ | 
|j¡ q| j}|jrA| |v rA| 
|j¡ |S )zEReturn all models that have a direct relationship to the given model.c                 S   s   g | ]
}t |tjƒr|‘qS r%   )Ú
issubclassr   ÚModel)Ú.0Úsubclassr%   r%   r&   Ú
<listcomp>#   s    
ýÿz'_get_related_models.<locals>.<listcomp>T)Zinclude_parentsZinclude_hiddenN)Ú__subclasses__Úsetr!   Z
get_fieldsÚis_relationÚrelated_modelr   r   Úaddr$   ÚappendÚproxyZconcrete_model)ÚmÚrelated_modelsZrelated_fields_modelsÚfÚoptsr%   r%   r&   Ú_get_related_models!   s$   þÿþ
ý€r8   c                 C   s   dd„ t | ƒD ƒS )zq
    Return a list of typical (app_label, model_name) tuples for all related
    models for the given model.
    c                 S   s   h | ]
}|j j|j jf’qS r%   )r!   r"   r#   )r*   Úrel_modr%   r%   r&   Ú	<setcomp>>   ó    ÿÿz,get_related_models_tuples.<locals>.<setcomp>N)r8   ©r$   r%   r%   r&   Úget_related_models_tuples9   s   þr=   c                 C   sj   t ƒ }t| ƒ}|D ] }|jj|jj}}||f|v rq	| ||f¡ | t|ƒ¡ q	|| jj| jjfh S )aå  
    Return all models that have a direct or indirect relationship
    to the given model.

    Relationships are either defined by explicit relational fields, like
    ForeignKey, ManyToManyField or OneToOneField, or by inheriting from another
    model (a superclass is related to its subclasses, but not vice versa). Note,
    however, that a model inheriting from a concrete model is also related to
    its superclass through the implicit *_ptr OneToOneField on the subclass.
    N)r.   r8   r!   r"   r#   r1   Úextend)r$   ÚseenÚqueuer9   Úrel_app_labelÚrel_model_namer%   r%   r&   Úget_related_models_recursiveD   s   þrC   c                   @   sD  e Zd ZdZdKdd„Zedd„ ƒZdd„ Zd	d
„ Zdd„ Z	dLdd„Z
dd„ Zdd„ Zdd„ Zdd„ Zdd„ Zdd„ Zdd„ Zdd„ Zdd „ Zd!d"„ Zd#d$„ Zd%d&„ Zd'd(„ ZdMd*d+„ZdMd,d-„ZdNd/d0„Zd1d2„ Zd3d4„ Z	dLd5d6„ZdLd7d8„Zd9d:„ Zd;d<„ Z d=d>„ Z!d?d@„ Z"dAdB„ Z#dCdD„ Z$e%dEdF„ ƒZ&e'dGdH„ ƒZ(dIdJ„ Z)dS )OÚProjectStatez½
    Represent the entire project's overall state. This is the item that is
    passed around - do it here rather than at the app level so that cross-app
    FKs/etc. resolve properly.
    Nc                 C   s>   |pi | _ |d u rtƒ }nt|tƒsJ ‚|| _d| _d | _d S ©NF)r   r.   r   Ú	real_appsÚ
is_delayedÚ
_relations)Úselfr   rF   r%   r%   r&   Ú__init__d   s   

zProjectState.__init__c                 C   s   | j d u r	|  ¡  | j S ©N)rH   Úresolve_fields_and_relations©rI   r%   r%   r&   Ú	relationsp   s   
zProjectState.relationsc                 C   sF   |j |jf}|| j|< | jd ur|  |¡ d| jv r!| j|Ž  d S d S ©Nr   )r"   Ú
name_lowerr   rH   Úresolve_model_relationsÚ__dict__Úreload_model)rI   Úmodel_stateÚ	model_keyr%   r%   r&   Ú	add_modelv   s   



ÿzProjectState.add_modelc                 C   s€   ||f}| j |= | jd ur,| j |d ¡ t| j ¡ ƒD ]\}}| |d ¡ |s+| j|= qd| jv r>| jj|Ž  | j ¡  d S d S rO   )	r   rH   ÚpopÚlistÚitemsrR   r   Úunregister_modelÚclear_cache)rI   r"   r#   rU   Zrelated_model_keyÚmodel_relationsr%   r%   r&   Úremove_model~   s   
€
üzProjectState.remove_modelc                 C   sL  |  ¡ }|  ¡ }| j||f  ¡ }||_|| j||f< ||f}|› d|› �}tƒ }	t| |ƒD ]2\}
}}}d }|jrA| ¡ }||j_|j	rP|d u rL| ¡ }||j_	|r`||
j
|< |	 |
j|
jf¡ q.| jd ur�||f}||f}|| jv r|| j |¡| j|< | j ¡ D ]}||v rŽ| |¡||< q�| j|	dd� |  ||¡ | j||dd� d S )Nr   T©Údelay)Úlowerr   ÚcloneÚnamer.   r   ÚtoÚremote_fieldr$   ÚthroughÚfieldsr1   r"   rP   rH   rW   ÚvaluesÚreload_modelsr]   rS   )rI   r"   Úold_nameÚnew_nameÚold_name_lowerÚnew_name_lowerZrenamed_modelZold_model_tupleZnew_remote_modelZ	to_reloadrT   rb   ÚfieldÚ	referenceZchanged_fieldZold_name_keyZnew_name_keyr\   r%   r%   r&   Úrename_modelŽ   sF   ÿ
€

€zProjectState.rename_modelc                 C   sV   | j ||f }i |j¥|¥|_|r!|D ]}||vr |j |d¡ q| j||dd� d S )NFTr^   )r   ÚoptionsrW   rS   )rI   r"   r#   rp   Zoption_keysrT   Úkeyr%   r%   r&   Úalter_model_optionsµ   s   €z ProjectState.alter_model_optionsc                    sJ   | j ||f }|j |¡ }r‡ fdd„|D ƒ|j|< | j||dd� d S )Nc                    s    g | ]}t |ƒt ˆ ƒkr|‘qS r%   )r    ©r*   Úobj©Úvalue_to_remover%   r&   r,   Á   s
    ÿÿz5ProjectState.remove_model_options.<locals>.<listcomp>Tr^   )r   rp   ÚgetrS   )rI   r"   r#   Úoption_namerv   rT   Úobjsr%   ru   r&   Úremove_model_options¾   s   
ÿz!ProjectState.remove_model_optionsc                 C   s,   | j ||f }t|ƒ|_| j||dd� d S ©NTr^   )r   rX   ÚmanagersrS   )rI   r"   r#   r|   rT   r%   r%   r&   Úalter_model_managersÆ   s   
z!ProjectState.alter_model_managersc                 C   s:   | j ||f }g |j| ¢|‘|j|< | j||dd� d S r{   ©r   rp   rS   )rI   r"   r#   rx   rt   rT   r%   r%   r&   Ú_append_optionË   s   zProjectState._append_optionc                    sD   | j ||f }|j| }‡ fdd„|D ƒ|j|< | j||dd� d S )Nc                    s   g | ]	}|j ˆ kr|‘qS r%   ©rb   rs   ©Úobj_namer%   r&   r,   Ó   ó    z/ProjectState._remove_option.<locals>.<listcomp>Tr^   r~   )rI   r"   r#   rx   r‚   rT   ry   r%   r�   r&   Ú_remove_optionÐ   s   
zProjectState._remove_optionc                 C   ó   |   ||d|¡ d S ©NÚindexes©r   )rI   r"   r#   Úindexr%   r%   r&   Ú	add_indexÖ   ó   zProjectState.add_indexc                 C   r…   r†   ©r„   )rI   r"   r#   Z
index_namer%   r%   r&   Úremove_indexÙ   r‹   zProjectState.remove_indexc           	      C   sf   | j ||f }|jd }g }|D ]}|j|kr| ¡ }||_| |¡ q||jd< | j||dd� d S )Nr‡   Tr^   )r   rp   rb   ra   r2   rS   )	rI   r"   r#   Zold_index_nameZnew_index_namerT   ry   Znew_indexesrt   r%   r%   r&   Úrename_indexÜ   s   


zProjectState.rename_indexc                 C   r…   ©NÚconstraintsrˆ   )rI   r"   r#   Ú
constraintr%   r%   r&   Úadd_constraintê   r‹   zProjectState.add_constraintc                 C   r…   r�   rŒ   )rI   r"   r#   Zconstraint_namer%   r%   r&   Úremove_constraintí   r‹   zProjectState.remove_constraintc                 C   sd   |s
|  ¡ }t|_n|}||f}|| j| j|< | jd ur$|  |||¡ |j }| j|d|iŽ d S ©Nr_   )	ra   r   Údefaultr   rf   rH   Úresolve_model_field_relationsr/   rS   )rI   r"   r#   rb   rm   Úpreserve_defaultrU   r_   r%   r%   r&   Ú	add_fieldð   s   
zProjectState.add_fieldc                 C   sR   ||f}| j | }|j |¡}| jd ur|  |||¡ |j }| j|d|iŽ d S r”   )r   rf   rW   rH   r–   r/   rS   )rI   r"   r#   rb   rU   rT   Ú	old_fieldr_   r%   r%   r&   Úremove_fieldÿ   s   

zProjectState.remove_fieldc           
      C   s¨   |s
|  ¡ }t|_n|}||f}| j| j}| jd ur9| |¡}|jr*|  |||¡ |||< |jr8|  |||¡ n|||< |j oIt	| |||fƒ }	| j
|d|	iŽ d S r”   )ra   r   r•   r   rf   rH   rW   r/   r–   r   rS   )
rI   r"   r#   rb   rm   r—   rU   rf   r™   r_   r%   r%   r&   Úalter_field	  s&   

€

ÿzProjectState.alter_fieldc              
      sœ  ||f}| j | }|j}z| ˆ¡}W n ty'   t|› d|› dˆ› d�ƒ‚w ||ˆ < | ¡ D ]}	t|	dd ƒ}
|
rGt‡ ‡fdd„|
D ƒƒ|	_q0|j	}dD ]}||v ra‡ ‡fdd„|| D ƒ||< qMd	}t
| |ˆ|fƒ}|D ]*�^ }}	}d
}|jr˜|j\}}t|dd ƒˆkr‰ˆ |_|r˜t‡ ‡fdd„|D ƒƒ|	_qn| jd urÄˆ ¡ }ˆ  ¡ }| j ¡ D ]}||| v rÃ||  |¡}	||	_|	|| |< q«| j|d|iŽ d S )Nr   z has no field named 'ú'Úfrom_fieldsc                    ó   g | ]
}|ˆkr
ˆ n|‘qS r%   r%   )r*   Zfrom_field_name©rj   ri   r%   r&   r,   4  r;   z-ProjectState.rename_field.<locals>.<listcomp>)Úindex_togetherÚunique_togetherc                    s    g | ]}‡ ‡fd d„|D ƒ‘qS )c                    rž   r%   r%   )r*   ÚnrŸ   r%   r&   r,   >  s    z8ProjectState.rename_field.<locals>.<listcomp>.<listcomp>r%   )r*   ZtogetherrŸ   r%   r&   r,   =  s    ÿÿTFÚ
field_namec                    rž   r%   r%   )r*   Zto_field_namerŸ   r%   r&   r,   L  r;   r_   )r   rf   rW   ÚKeyErrorr
   rg   Úgetattrr    r�   rp   r   rc   r£   Ú	to_fieldsrH   r`   rb   rS   )rI   r"   r#   ri   rj   rU   rT   rf   Úfoundrm   r�   rp   Úoptionr_   Z
referencesÚ_rn   rd   r¦   rk   rl   Zto_modelr%   rŸ   r&   Úrename_field#  sh   
ÿÿþÿ€
þ€
þÿ€
€zProjectState.rename_fieldFc              	   C   s  |rd| _ tƒ }z	| j ||¡}W n	 ty   Y nw |r"t|ƒ}nt|ƒ}| j||f }tƒ }|j 	¡ D ]}|j
rR|jjtkrAq5t|j|ƒ\}	}
| |	|
 ¡ f¡ q5| |¡ |D ](\}	}
z	| j |	|
¡}W n	 typ   Y qZw |r{| t|ƒ¡ qZ| t|ƒ¡ qZ| ||f¡ |S )NT)rG   r.   r   Ú	get_modelÚLookupErrorr=   rC   r   rf   rg   r/   rd   r$   r   r'   r0   r1   r`   Úupdate)rI   r"   r#   r_   r5   Z	old_modelrT   Zdirect_related_modelsrm   rA   rB   Z	rel_modelr%   r%   r&   Ú_find_reload_model[  sD   ÿ
ÿ€
ÿzProjectState._find_reload_modelc                 C   s*   d| j v r|  |||¡}|  |¡ d S d S rO   )rR   r®   Ú_reload)rI   r"   r#   r_   r5   r%   r%   r&   rS   �  s   
þzProjectState.reload_modelTc                 C   sD   d| j v r tƒ }|D ]\}}| |  |||¡¡ q
|  |¡ d S d S rO   )rR   r.   r­   r®   r¯   )rI   r   r_   r5   r"   r#   r%   r%   r&   rh   ’  s   
ÿúzProjectState.reload_modelsc              	   C   sÀ   | j  ¡ � |D ]\}}| j  ||¡ qW d   ƒ n1 sw   Y  g }| j jD ]}|j|jf|v r8| |¡ q)|D ]\}}z	| j||f }W n	 tyQ   Y q;w | |¡ q;| j  	|¡ d S rK   )
r   Úbulk_updaterZ   Úreal_modelsr"   rP   r2   r   r¤   Úrender_multiple)rI   r5   rA   rB   Zstates_to_be_renderedrT   r%   r%   r&   r¯   ›  s$   ÿÿ
€ÿzProjectState._reloadc                 C   sˆ   t |g|¢R Ž }|d | jvr||v r|| }| j| }|| j| jv r4||| vs,J ‚||| |< d S || |= || sB||= d S d S )Nr   )r   rF   rH   r   rf   )rI   r$   rU   r£   rm   Ú	concretesZremote_model_keyZrelations_to_remote_modelr%   r%   r&   Úupdate_model_field_relationµ  s   


ÿz(ProjectState.update_model_field_relationc                 C   s`   |j }|sd S |d u r|  ¡ \}}|  |j||||¡ t|dd ƒ}|s%d S |  |||||¡ d S )Nre   )rd   Ú-_get_concrete_models_mapping_and_proxy_modelsr´   r$   r¥   )rI   rU   r£   rm   r³   rd   r©   re   r%   r%   r&   r–   Ì  s$   û
ÿz*ProjectState.resolve_model_field_relationsc                 C   sF   |d u r
|   ¡ \}}| j| }|j ¡ D ]\}}|  ||||¡ qd S rK   )rµ   r   rf   rY   r–   )rI   rU   r³   r©   rT   r£   rm   r%   r%   r&   rQ   è  s   
ÿz$ProjectState.resolve_model_relationsc                 C   s~   | j  ¡ D ]}|j ¡ D ]\}}||_qqttttƒƒ| _|  	¡ \}}|D ]}|  
||¡ q%|D ]}| j||  | j|< q0d S rK   )r   rg   rf   rY   rb   r   r   ÚdictrH   rµ   rQ   )rI   rT   r£   rm   r³   ÚproxiesrU   r%   r%   r&   rL   ð  s   ÿÿz)ProjectState.resolve_fields_and_relationsc                 C   s   |   ¡ \}}t|ƒ}|| S rK   )rµ   r   )rI   r$   Úconcrete_models_mappingr©   rU   r%   r%   r&   Úget_concrete_model_key   s   ýz#ProjectState.get_concrete_model_keyc                 C   sR   i }i }| j  ¡ D ]\}}|j d¡r |||< |  ||¡||< q	|||< q	||fS )Nr3   )r   rY   rp   rw   Ú_find_concrete_model_from_proxy)rI   r¸   Úproxy_modelsrU   rT   r%   r%   r&   rµ     s   þþÿ
z:ProjectState._get_concrete_models_mapping_and_proxy_modelsc                 C   sT   |j D ]$}t|tƒst|tjƒsqt|ƒ}| |¡}|s |  S |  ||¡  S d S rK   )	Úbasesr   r   r(   r   r)   r   rw   rº   )rI   r»   rT   ÚbaseZbase_keyZ
base_stater%   r%   r&   rº     s   

øz,ProjectState._find_concrete_model_from_proxyc                 C   s@   t dd„ | j ¡ D ƒ| jd�}d| jv r| j ¡ |_| j|_|S )z*Return an exact copy of this ProjectState.c                 S   ó   i | ]	\}}||  ¡ “qS r%   ©ra   )r*   ÚkÚvr%   r%   r&   Ú
<dictcomp>(  rƒ   z&ProjectState.clone.<locals>.<dictcomp>©r   rF   r   N)rD   r   rY   rF   rR   r   ra   rG   )rI   Z	new_stater%   r%   r&   ra   %  s   þ
zProjectState.clonec                 C   s$   | j rd| jv r| jd= d S d S d S rO   )rG   rR   rM   r%   r%   r&   Úclear_delayed_apps_cache0  s   ÿz%ProjectState.clear_delayed_apps_cachec                 C   s   t | j| jƒS rK   )Ú	StateAppsrF   r   rM   r%   r%   r&   r   4  s   zProjectState.appsc                 C   s8   i }|j dd�D ]}t |¡}|||j|jf< q| |ƒS )z3Take an Apps and return a ProjectState matching it.T)Zinclude_swappedN)Ú
get_modelsÚ
ModelStateÚ
from_modelr"   rP   )Úclsr   Z
app_modelsr$   rT   r%   r%   r&   Ú	from_apps8  s
   
zProjectState.from_appsc                 C   s   | j |j ko| j|jkS rK   rÃ   ©rI   Úotherr%   r%   r&   Ú__eq__A  s   zProjectState.__eq__)NNrK   ©F)T)*Ú__name__Ú
__module__Ú__qualname__Ú__doc__rJ   ÚpropertyrN   rV   r]   ro   rr   rz   r}   r   r„   rŠ   r�   rŽ   r’   r“   r˜   rš   r›   rª   r®   rS   rh   r¯   r´   r–   rQ   rL   r¹   rµ   rº   ra   rÄ   r   r   ÚclassmethodrÊ   rÍ   r%   r%   r%   r&   rD   ]   sR    


'	

8
2
	
û


rD   c                   @   s    e Zd ZdZdd„ Zdd„ ZdS )ÚAppConfigStubzAStub of an AppConfig. Only provides a label and a dict of models.c                 C   s   d | _ i | _|| _|| _d S rK   )r   r   Úlabelrb   )rI   rÖ   r%   r%   r&   rJ   H  s   
zAppConfigStub.__init__c                 C   s   | j j| j | _d S rK   )r   Ú
all_modelsrÖ   r   rM   r%   r%   r&   Úimport_modelsQ  r‹   zAppConfigStub.import_modelsN)rÏ   rÐ   rÑ   rÒ   rJ   rØ   r%   r%   r%   r&   rÕ   E  s    	rÕ   c                       sN   e Zd ZdZd‡ fdd„	Zedd„ ƒZdd„ Zd	d
„ Zdd„ Z	dd„ Z
‡  ZS )rÅ   zo
    Subclass of the global Apps registry class to better handle dynamic model
    additions and removals.
    Fc                    sè   g | _ |D ]}t |¡}| ¡ D ]}| j  tj|dd�¡ qqdd„ | ¡ D ƒ}dd„ tg |¢|¢ƒD ƒ}t	ƒ  
|¡ d | _d | _|  g | ¡ ¢| j ¢¡ ddlm}	 |r[ttjƒhntƒ }
|	| |
d	�}|rrtd
 dd„ |D ƒ¡ƒ‚d S )NT)Úexclude_relsc                 S   ó   h | ]}|j ’qS r%   )r"   )r*   rT   r%   r%   r&   r:   g  s    z%StateApps.__init__.<locals>.<setcomp>c                 S   s   g | ]}t |ƒ‘qS r%   )rÕ   )r*   rÖ   r%   r%   r&   r,   h  ó    ÿz&StateApps.__init__.<locals>.<listcomp>r   )Ú_check_lazy_references)ÚignoreÚ
c                 s   s   � | ]}|j V  qd S rK   )Úmsg)r*   Úerrorr%   r%   r&   Ú	<genexpr>}  s   € z%StateApps.__init__.<locals>.<genexpr>)r±   Úglobal_appsZget_app_configrÆ   r2   rÇ   rÈ   rg   ÚsortedÚsuperrJ   Ú_lockZready_eventr²   Zdjango.core.checks.model_checksrÜ   r   r	   ZAUTH_USER_MODELr.   Ú
ValueErrorÚjoin)rI   rF   r   Zignore_swappabler"   Zappr$   Z
app_labelsÚapp_configsrÜ   rÝ   Úerrors©Ú	__class__r%   r&   rJ   [  s*   
ÿÿÿÿzStateApps.__init__c                 c   s:   � | j }d| _ zd V  W || _ |  ¡  d S || _ |  ¡  w rE   )Úreadyr[   )rI   rì   r%   r%   r&   r°     s   €ÿ
zStateApps.bulk_updatec              
   C   s°   |sd S |   ¡ �F |}|rFg }|D ]}z| | ¡ W q ty(   | |¡ Y qw t|ƒt|ƒkr:td|tƒ f ƒ‚|}|sW d   ƒ d S W d   ƒ d S 1 sQw   Y  d S )NzéCannot resolve bases for %r
This can happen if you are inheriting models from an app with migrations (e.g. contrib.auth)
 in an app with no migrations; see https://docs.djangoproject.com/en/%s/topics/migrations/#dependencies for more)r°   Úrenderr   r2   r   r   )rI   Zmodel_statesZunrendered_modelsZnew_unrendered_modelsr$   r%   r%   r&   r²   ‹  s.   
ÿûÿðþ"þzStateApps.render_multiplec                 C   sP   t g i ƒ}t | j¡|_| jD ]}t|ƒ}||_| ¡  ||j|< q| j|_|S )z Return a clone of this registry.N)	rÅ   ÚcopyÚdeepcopyr×   rè   rÕ   r   rØ   r±   )rI   ra   r"   Z
app_configr%   r%   r&   ra   §  s   

zStateApps.clonec                 C   s`   || j | |jj< || jvrt|ƒ| j|< | | j| _|| j| j|jj< |  |¡ |  ¡  d S rK   )	r×   r!   r#   rè   rÕ   r   r   Zdo_pending_operationsr[   )rI   r"   r$   r%   r%   r&   Úregister_model¶  s   

zStateApps.register_modelc                 C   s6   z| j | |= | j| j|= W d S  ty   Y d S w rK   )r×   rè   r   r¤   )rI   r"   r#   r%   r%   r&   rZ   ¿  s   ÿzStateApps.unregister_modelrÎ   )rÏ   rÐ   rÑ   rÒ   rJ   r   r°   r²   ra   rð   rZ   Ú__classcell__r%   r%   rê   r&   rÅ   U  s    $
	rÅ   c                   @   sv   e Zd ZdZ	ddd„Zedd„ ƒZdd„ Zedd
d„ƒZ	dd„ Z
dd„ Zdd„ Zdd„ Zdd„ Zdd„ Zdd„ ZdS )rÇ   a�  
    Represent a Django Model. Don't use the actual Model class as it's not
    designed to have its options changed - instead, mutate this one and then
    render it into a Model as required.

    Note that while you are allowed to mutate .fields, you are not allowed
    to mutate the Field instances inside there themselves - you must instead
    assign new ones, as these are not detached during a clone.
    Nc           	      C   sâ   || _ || _t|ƒ| _|pi | _| j dg ¡ | j dg ¡ |p#tjf| _|p(g | _	| j 
¡ D ].\}}t|dƒr>td| ƒ‚|jrMt|jdƒrMtd| ƒ‚|jr]t|jjdƒr]td| ƒ‚q/| jd D ]}|jsntd| ƒ‚qcd S )	Nr‡   r�   r$   z7ModelState.fields cannot be bound to a model - "%s" is.r!   z_ModelState.fields cannot refer to a model class - "%s.to" does. Use a string reference instead.zdModelState.fields cannot refer to a model class - "%s.through" does. Use a string reference instead.zKIndexes passed to ModelState require a name attribute. %r doesn't have one.)r"   rb   r¶   rf   rp   Ú
setdefaultr   r)   r¼   r|   rY   Úhasattrræ   r/   r0   Zmany_to_manyrd   re   )	rI   r"   rb   rf   rp   r¼   r|   rm   r‰   r%   r%   r&   rJ   Ò  sF   



ÿÿÿÿÿ€ÿÿÿÿzModelState.__init__c                 C   s
   | j  ¡ S rK   )rb   r`   rM   r%   r%   r&   rP   ö  s   
zModelState.name_lowerc                 C   s    |dkr| j  d|¡}| j| S )NÚ_orderÚorder_with_respect_to)rp   rw   rf   )rI   r£   r%   r%   r&   Ú	get_fieldú  s   
zModelState.get_fieldFc                    s$  g }ˆj jD ]7}t|ddƒr|rqt|tjƒrq|j}z| || ¡ f¡ W q t	y= } zt	d|ˆj j
|f ƒ‚d}~ww |slˆj jD ]'}|j}z| || ¡ f¡ W qD t	yk } zt	d|ˆj j|f ƒ‚d}~ww i }tD ]j}|dv rwqp|ˆj jv rÚ|dkr�ˆj jd }tt|ƒƒ||< qp|dkr£ˆj jd }	tt|	ƒƒ||< qp|dkrÂd	d
„ ˆj jD ƒ}
|
D ]
}|js¼| ˆ¡ q²|
|d< qp|dkrÒdd
„ ˆj jD ƒ|d< qpˆj j| ||< qp|rédD ]}||v rè||= qß| d¡dd„ ˆj jD ƒv rú|d= ‡ fdd„‰ ttˆ ˆƒƒ‡fdd„d�}tdd„ |D ƒƒ}tdd„ |D ƒƒ�s%tjf}g }tƒ }d}ˆj jD ]J}|j|v �r:�q0|j�rHt |¡}| ¡  n#|ˆju �sT|ˆju �rit  ¡ }|j!|_!|j|_|ˆju �rh|}n�q0| "|j¡ | |j|f¡ �q0|d|fgk�r…g }| ˆj j#ˆj j||||ƒS )z3Given a model, return a ModelState representing it.rd   Nz'Couldn't reconstruct field %s on %s: %sz+Couldn't reconstruct m2m field %s on %s: %s)r   r"   r¡   r    r‡   c                 S   ó   g | ]}|  ¡ ‘qS r%   r¿   )r*   Úidxr%   r%   r&   r,   1  s    z)ModelState.from_model.<locals>.<listcomp>r�   c                 S   r÷   r%   r¿   )r*   Úconr%   r%   r&   r,   7  rÛ   )r¡   r    rõ   rõ   c                 S   rÚ   r%   r€   )r*   rm   r%   r%   r&   r:   C  s    ÿz(ModelState.from_model.<locals>.<setcomp>c                    s@   g }| j D ]}t|dƒr|jjr| ˆ |ƒ¡ q| |¡ q|S )Nr!   )Ú	__bases__ró   r!   Zabstractr>   r2   )r$   r¼   r½   )Úflatten_basesr%   r&   rû   H  s   
z,ModelState.from_model.<locals>.flatten_basesc                    s   ˆ j  | ¡S rK   )Ú__mro__r‰   )Úxr<   r%   r&   Ú<lambda>W  s    z'ModelState.from_model.<locals>.<lambda>©rq   c                 s   s&   � | ]}t |d ƒr|jjn|V  qdS )r!   N)ró   r!   Zlabel_lower©r*   r½   r%   r%   r&   rá   [  s
   € ÿ
ÿz(ModelState.from_model.<locals>.<genexpr>c                 s   s&   � | ]}t |tƒpt|tjƒV  qd S rK   )r   r   r(   r   r)   r   r%   r%   r&   rá   `  s   € 
ÿZobjects)$r!   Zlocal_fieldsr¥   r   r   ZOrderWrtrb   r2   ra   Ú	TypeErrorrÖ   Zlocal_many_to_manyZobject_namer   Zoriginal_attrsr.   r   r‡   Zset_name_with_modelr�   rw   Zprivate_fieldsrã   r    Úanyr)   r|   Zuse_in_migrationsrî   Z_set_creation_counterZ_base_managerZ_default_managerÚManagerr$   r1   r"   )rÉ   r$   rÙ   rf   rm   rb   Úerp   ÚutÚitr‡   r‰   rq   Zflattened_basesr¼   r|   Zmanager_namesZdefault_manager_shimÚmanagerZnew_managerr%   )rû   r$   r&   rÈ   ÿ  sÚ   ýÿÿ€ÿ	ýÿÿ€ÿ

€
ÿ€€ÿÿþ
ÿ

€úzModelState.from_modelc                 c   sp   � t | jdd„ d�}|D ])\}}| ¡ \}}}}}|r't|ƒ}	||	 ¡ fV  qt|ƒ}
||
|i |¤ŽfV  qdS )z-Deep-clone the managers using deconstruction.c                 S   s
   | d j S )Nr   )Zcreation_counter)rÁ   r%   r%   r&   rþ   �  s   
 z/ModelState.construct_managers.<locals>.<lambda>rÿ   N)rã   r|   Údeconstructr   Ú
as_manager)rI   Zsorted_managersZmgr_namer  r	  Zmanager_pathZqs_pathÚargsÚkwargsZqs_classZmanager_classr%   r%   r&   Úconstruct_managersŠ  s   €ùzModelState.construct_managersc                 C   s.   | j | j| jt| jƒt| jƒ| jt| jƒd�S )z(Return an exact copy of this ModelState.)r"   rb   rf   rp   r¼   r|   N)	rë   r"   rb   r¶   rf   rp   r¼   rX   r|   rM   r%   r%   r&   ra   —  s   ÷zModelState.clonec                    sš   | j ˆ dœ| j¥}tdd|ƒ}zt‡ fdd„| jD ƒƒ}W n ty,   td| jf ƒ‚w dd„ | j ¡ D ƒ}||d< d	|d
< | 	|  
¡ ¡ t| j||ƒS )zACreate a Model object from our current state into the given apps.)r"   r   ZMetar%   c                 3   s(   � | ]}t |tƒrˆ  |¡n|V  qd S rK   )r   r   r«   r   r   r%   r&   rá   ¬  s
   € ÿ
ÿz$ModelState.render.<locals>.<genexpr>z(Cannot resolve one or more bases from %rc                 S   r¾   r%   r¿   )r*   rb   rm   r%   r%   r&   rÂ   µ  rƒ   z%ModelState.render.<locals>.<dictcomp>Z__fake__rÐ   N)r"   rp   Útyper    r¼   r¬   r   rf   rY   r­   r  rb   )rI   r   Zmeta_contentsÚmetar¼   Úbodyr%   r   r&   rí   ¥  s    þ
ÿÿzModelState.renderc                 C   ó4   | j d D ]}|j|kr|  S qtd|| jf ƒ‚)Nr‡   zNo index named %s on model %s©rp   rb   ræ   )rI   rb   r‰   r%   r%   r&   Úget_index_by_name¾  ó
   
ÿzModelState.get_index_by_namec                 C   r  )Nr�   z"No constraint named %s on model %sr  )rI   rb   r‘   r%   r%   r&   Úget_constraint_by_nameÄ  r  z!ModelState.get_constraint_by_namec                 C   s   d| j j| j| jf S )Nz<%s: '%s.%s'>)rë   rÏ   r"   rb   rM   r%   r%   r&   Ú__repr__Ê  s   zModelState.__repr__c                 C   s|   | j |j ko=| j|jko=t| jƒt|jƒko=tdd„ tt| j ¡ ƒt|j ¡ ƒƒD ƒƒo=| j|jko=| j	|j	ko=| j
|j
kS )Nc                 s   sD   � | ]\\}}\}}||ko|  ¡ d d… |  ¡ d d… kV  qdS )r   N)r  )r*   Zk1Úf1Zk2Úf2r%   r%   r&   rá   Ò  s
   € &ÿ
ÿz$ModelState.__eq__.<locals>.<genexpr>)r"   rb   r   rf   ÚallÚziprã   rY   rp   r¼   r|   rË   r%   r%   r&   rÍ   Í  s$   
ÿþþþý

ö
õ
ózModelState.__eq__)NNNrÎ   )rÏ   rÐ   rÑ   rÒ   rJ   r   rP   rö   rÔ   rÈ   r  ra   rí   r  r  r  rÍ   r%   r%   r%   r&   rÇ   Ç  s"    
ÿ$
 rÇ   )r   )1rî   Úcollectionsr   Ú
contextlibr   Ú	functoolsr   Zdjango.appsr   Zdjango.apps.registryr   r   râ   Zdjango.confr	   Zdjango.core.exceptionsr
   Z	django.dbr   Zdjango.db.migrations.utilsr   r   Zdjango.db.modelsr   Zdjango.db.models.fields.relatedr   Zdjango.db.models.optionsr   r   Zdjango.db.models.utilsr   Zdjango.utils.functionalr   Zdjango.utils.module_loadingr   Zdjango.utils.versionr   Ú
exceptionsr   Úutilsr   r'   r8   r=   rC   rD   rÕ   rÅ   rÇ   r%   r%   r%   r&   Ú<module>   s>    
   kr