o
    ˜¨Êh»ž  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%   úL/var/www/html/env/lib/python3.10/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)Úinclude_parentsÚinclude_hiddenN)Ú__subclasses__Úsetr!   Ú
get_fieldsÚis_relationÚrelated_modelr   r   Úaddr$   ÚappendÚproxyÚconcrete_model)ÚmÚrelated_modelsÚrelated_fields_modelsÚfÚoptsr%   r%   r&   Ú_get_related_models!   s"   þÿ

ÿ€r=   c                 C   s   dd„ t | ƒD ƒS )zq
    Return a list of typical (app_label, model_name) tuples for all related
    models for the given model.
    c                 S   s   h | ]
}|j j|j jf’qS r%   )r!   r"   r#   )r*   Úrel_modr%   r%   r&   Ú	<setcomp>>   ó    ÿÿz,get_related_models_tuples.<locals>.<setcomp>)r=   ©r$   r%   r%   r&   Úget_related_models_tuples9   s   þrB   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.
    )r0   r=   r!   r"   r#   r4   Úextend)r$   ÚseenÚqueuer>   Úrel_app_labelÚrel_model_namer%   r%   r&   Úget_related_models_recursiveD   s   þrH   c                   @   sD  e Zd ZdZdKdd„Zedd„ ƒZdd„ Zd	d
„ Zdd„ Z	dLdd„Z
dd„ Zdd„ Zdd„ Zdd„ Zdd„ Zdd„ Zdd„ Zdd„ Zdd „ Zd!d"„ Zd#d$„ 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$e%dEdF„ ƒZ&e'dGdH„ ƒZ(dIdJ„ Z)dS )OÚProjectStatez½
    Represent the entire project's overall state. This is the item that is
    passed around - do it here rather than at the app level so that cross-app
    FKs/etc. resolve properly.
    Nc                 C   s>   |pi | _ |d u rtƒ }nt|tƒsJ ‚|| _d| _d | _d S ©NF)r   r0   r   Ú	real_appsÚ
is_delayedÚ
_relations)Úselfr   rK   r%   r%   r&   Ú__init__d   s   

zProjectState.__init__c                 C   s   | j d u r	|  ¡  | j S ©N)rM   Úresolve_fields_and_relations©rN   r%   r%   r&   Ú	relationsp   s   
zProjectState.relationsc                 C   sF   |j |jf}|| j|< | jd ur|  |¡ d| jv r!| j|Ž  d S d S ©Nr   )r"   Ú
name_lowerr   rM   Úresolve_model_relationsÚ__dict__Úreload_model)rN   Úmodel_stateÚ	model_keyr%   r%   r&   Ú	add_modelv   s   



ÿzProjectState.add_modelc                 C   s€   ||f}| j |= | jd ur,| j |d ¡ t| j ¡ ƒD ]\}}| |d ¡ |s+| j|= qd| jv r>| jj|Ž  | j ¡  d S d S rT   )	r   rM   ÚpopÚlistÚitemsrW   r   Úunregister_modelÚclear_cache)rN   r"   r#   rZ   Úrelated_model_keyÚmodel_relationsr%   r%   r&   Úremove_model~   s   
€
üzProjectState.remove_modelc                 C   sL  |  ¡ }|  ¡ }| j||f  ¡ }||_|| j||f< ||f}|› d|› �}tƒ }	t| |ƒD ]2\}
}}}d }|jrA| ¡ }||j_|j	rP|d u rL| ¡ }||j_	|r`||
j
|< |	 |
j|
jf¡ q.| jd ur�||f}||f}|| jv r|| j |¡| j|< | j ¡ D ]}||v rŽ| |¡||< q�| j|	dd� |  ||¡ | j||dd� d S )Nr   T©Údelay)Úlowerr   ÚcloneÚnamer0   r   ÚtoÚremote_fieldr$   ÚthroughÚfieldsr4   r"   rU   rM   r\   ÚvaluesÚreload_modelsrc   rX   )rN   r"   Úold_nameÚnew_nameÚold_name_lowerÚnew_name_lowerÚrenamed_modelÚold_model_tupleÚnew_remote_modelÚ	to_reloadrY   rh   ÚfieldÚ	referenceÚchanged_fieldÚold_name_keyÚnew_name_keyrb   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 )NFTrd   )r   Úoptionsr\   rX   )rN   r"   r#   r}   Úoption_keysrY   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    z5ProjectState.remove_model_options.<locals>.<listcomp>Trd   )r   r}   ÚgetrX   )rN   r"   r#   Úoption_namer„   rY   Úobjsr%   rƒ   r&   Úremove_model_options¾   s   
ÿz!ProjectState.remove_model_optionsc                 C   s,   | j ||f }t|ƒ|_| j||dd� d S ©NTrd   )r   r]   ÚmanagersrX   )rN   r"   r#   rŠ   rY   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   r}   rX   )rN   r"   r#   r†   r‚   rY   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%   ©rh   r�   ©Úobj_namer%   r&   r,   Ó   ó    z/ProjectState._remove_option.<locals>.<listcomp>Trd   rŒ   )rN   r"   r#   r†   r�   rY   r‡   r%   r�   r&   Ú_remove_optionÐ   s   
zProjectState._remove_optionc                 C   ó   |   ||d|¡ d S ©NÚindexes©r�   )rN   r"   r#   Úindexr%   r%   r&   Ú	add_indexÖ   ó   zProjectState.add_indexc                 C   r“   r”   ©r’   )rN   r"   r#   Ú
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•   Trd   )r   r}   rh   rg   r5   rX   )	rN   r"   r#   Úold_index_nameÚnew_index_namerY   r‡   Únew_indexesr‚   r%   r%   r&   Úrename_indexÜ   s   


zProjectState.rename_indexc                 C   r“   ©NÚconstraintsr–   )rN   r"   r#   Ú
constraintr%   r%   r&   Úadd_constraintê   r™   zProjectState.add_constraintc                 C   r“   r¡   rš   )rN   r"   r#   Ú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 ©Nre   )	rg   r   Údefaultr   rl   rM   Úresolve_model_field_relationsr2   rX   )rN   r"   r#   rh   rw   Úpreserve_defaultrZ   re   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   rl   r\   rM   r©   r2   rX   )rN   r"   r#   rh   rZ   rY   Ú	old_fieldre   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§   )rg   r   r¨   r   rl   rM   r\   r2   r©   r   rX   )
rN   r"   r#   rh   rw   rª   rZ   rl   r¬   re   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*   Úfrom_field_name©rp   ro   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                    r±   r%   r%   )r*   Únr³   r%   r&   r,   >  s    z8ProjectState.rename_field.<locals>.<listcomp>.<listcomp>r%   )r*   Útogetherr³   r%   r&   r,   =  s    ÿÿTFÚ
field_namec                    r±   r%   r%   )r*   Úto_field_namer³   r%   r&   r,   L  r@   re   )r   rl   r\   ÚKeyErrorr
   rm   Úgetattrr    r°   r}   r   ri   r¸   Ú	to_fieldsrM   rf   rh   rX   )rN   r"   r#   ro   rp   rZ   rY   rl   Úfoundrw   r°   r}   Úoptionre   Ú
referencesÚ_rx   rj   r¼   rq   rr   Úto_modelr%   r³   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)rL   r0   r   Ú	get_modelÚLookupErrorrB   rH   r   rl   rm   r2   rj   r$   r   r'   r3   r4   rf   Úupdate)rN   r"   r#   re   r9   Ú	old_modelrY   Údirect_related_modelsrw   rF   rG   Ú	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 rT   )rW   rÉ   Ú_reload)rN   r"   r#   re   r9   r%   r%   r&   rX   �  s   
þzProjectState.reload_modelTc                 C   sD   d| j v r tƒ }|D ]\}}| |  |||¡¡ q
|  |¡ d S d S rT   )rW   r0   rÅ   rÉ   rÊ   )rN   r   re   r9   r"   r#   r%   r%   r&   rn   ’  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 rP   )
r   Úbulk_updater_   Úreal_modelsr"   rU   r5   r   rº   Úrender_multiple)rN   r9   rF   rG   Ústates_to_be_renderedrY   r%   r%   r&   rÊ   ›  s$   ÿÿ
€ÿzProjectState._reloadc                 C   sˆ   t |g|¢R Ž }|d | jvr||v r|| }| j| }|| j| jv r4||| vs,J ‚||| |< d S || |= || sB||= d S d S )Nr   )r   rK   rM   r   rl   )rN   r$   rZ   r¸   rw   Ú	concretesÚremote_model_keyÚ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 )Nrk   )rj   Ú-_get_concrete_models_mapping_and_proxy_modelsrÒ   r$   r»   )rN   rZ   r¸   rw   rÏ   rj   rÀ   rk   r%   r%   r&   r©   Ì  s$   û
ÿz*ProjectState.resolve_model_field_relationsc                 C   sF   |d u r
|   ¡ \}}| j| }|j ¡ D ]\}}|  ||||¡ qd S rP   )rÓ   r   rl   r^   r©   )rN   rZ   rÏ   rÀ   rY   r¸   rw   r%   r%   r&   rV   è  s   
ÿz$ProjectState.resolve_model_relationsc                 C   s~   | j  ¡ D ]}|j ¡ D ]\}}||_qqttttƒƒ| _|  	¡ \}}|D ]}|  
||¡ q%|D ]}| j||  | j|< q0d S rP   )r   rm   rl   r^   rh   r   r   ÚdictrM   rÓ   rV   )rN   rY   r¸   rw   rÏ   ÚproxiesrZ   r%   r%   r&   rQ   ð  s   ÿÿz)ProjectState.resolve_fields_and_relationsc                 C   s   |   ¡ \}}t|ƒ}|| S rP   )rÓ   r   )rN   r$   Úconcrete_models_mappingrÀ   rZ   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 )Nr6   )r   r^   r}   r…   Ú_find_concrete_model_from_proxy)rN   rÖ   Úproxy_modelsrZ   rY   r%   r%   r&   rÓ     s   þþÿ
z:ProjectState._get_concrete_models_mapping_and_proxy_modelsc                 C   sT   |j D ]$}t|tƒst|tjƒsqt|ƒ}| |¡}|s |  S |  ||¡  S d S rP   )	Úbasesr   r   r(   r   r)   r   r…   rØ   )rN   rÙ   rY   ÚbaseÚbase_keyÚ
base_stater%   r%   r&   rØ     s   

øz,ProjectState._find_concrete_model_from_proxyc                 C   s@   t dd„ | j ¡ D ƒ| jd�}d| jv r| j ¡ |_| j|_|S )z*Return an exact copy of this ProjectState.c                 S   ó   i | ]	\}}||  ¡ “qS r%   ©rg   )r*   ÚkÚvr%   r%   r&   Ú
<dictcomp>(  r‘   z&ProjectState.clone.<locals>.<dictcomp>©r   rK   r   )rI   r   r^   rK   rW   r   rg   rL   )rN   Ú	new_stater%   r%   r&   rg   %  s   þ
zProjectState.clonec                 C   s$   | j rd| jv r| jd= d S d S d S rT   )rL   rW   rR   r%   r%   r&   Úclear_delayed_apps_cache0  s   ÿz%ProjectState.clear_delayed_apps_cachec                 C   s   t | j| jƒS rP   )Ú	StateAppsrK   r   rR   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)Úinclude_swapped)Ú
get_modelsÚ
ModelStateÚ
from_modelr"   rU   )Úclsr   Ú
app_modelsr$   rY   r%   r%   r&   Ú	from_apps8  s
   
zProjectState.from_appsc                 C   s   | j |j ko| j|jkS rP   rã   ©rN   Úotherr%   r%   r&   Ú__eq__A  s   zProjectState.__eq__)NNrP   ©F)T)*Ú__name__Ú
__module__Ú__qualname__Ú__doc__rO   ÚpropertyrS   r[   rc   r|   r€   rˆ   r‹   r�   r’   r˜   rœ   r    r¤   r¦   r«   r­   r®   rÂ   rÉ   rX   rn   rÊ   rÒ   r©   rV   rQ   r×   rÓ   rØ   rg   rå   r   r   Úclassmethodrí   rð   r%   r%   r%   r&   rI   ]   sR    


'	

8
2
	
û


rI   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 rP   )r   r   Úlabelrh   )rN   rù   r%   r%   r&   rO   H  s   
zAppConfigStub.__init__c                 C   s   | j j| j | _d S rP   )r   Ú
all_modelsrù   r   rR   r%   r%   r&   Úimport_modelsQ  r™   zAppConfigStub.import_modelsN)rò   ró   rô   rõ   rO   rû   r%   r%   r%   r&   rø   E  s    	rø   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 )ræ   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*   rY   r%   r%   r&   r?   g  s    z%StateApps.__init__.<locals>.<setcomp>c                 S   s   g | ]}t |ƒ‘qS r%   )rø   )r*   rù   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 rP   )Úmsg)r*   Úerrorr%   r%   r&   Ú	<genexpr>}  s   € z%StateApps.__init__.<locals>.<genexpr>)rÌ   Úglobal_appsÚget_app_configrè   r5   ré   rê   rm   ÚsortedÚsuperrO   Ú_lockÚready_eventrÍ   Údjango.core.checks.model_checksrÿ   r   r	   ÚAUTH_USER_MODELr0   Ú
ValueErrorÚjoin)rN   rK   r   Úignore_swappabler"   Úappr$   Ú
app_labelsÚapp_configsrÿ   r   Úerrors©Ú	__class__r%   r&   rO   [  s*   
ÿÿÿÿzStateApps.__init__c                 c   s:   � | j }d| _ zd V  W || _ |  ¡  d S || _ |  ¡  w rJ   )Úreadyr`   )rN   r  r%   r%   r&   rË     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)rË   Úrenderr   r5   r   r   )rN   Úmodel_statesÚunrendered_modelsÚnew_unrendered_modelsr$   r%   r%   r&   rÍ   ‹  s.   
ÿûÿðþ"þzStateApps.render_multiplec                 C   sH   t g i ƒ}t | j¡|_t | j¡|_|j ¡ D ]}||_q| j|_|S )z Return a clone of this registry.)ræ   ÚcopyÚdeepcopyrú   r  rm   r   rÌ   )rN   rg   Ú
app_configr%   r%   r&   rg   §  s   
zStateApps.clonec                 C   s`   || j | |jj< || jvrt|ƒ| j|< | | j| _|| j| j|jj< |  |¡ |  ¡  d S rP   )	rú   r!   r#   r  rø   r   r   Údo_pending_operationsr`   )rN   r"   r$   r%   r%   r&   Úregister_model³  s   

zStateApps.register_modelc                 C   s6   z| j | |= | j| j|= W d S  ty   Y d S w rP   )rú   r  r   rº   )rN   r"   r#   r%   r%   r&   r_   ¼  s   ÿzStateApps.unregister_modelrñ   )rò   ró   rô   rõ   rO   r   rË   rÍ   rg   r  r_   Ú__classcell__r%   r%   r  r&   ræ   U  s    $
	ræ   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 )ré   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"   rh   rÔ   rl   r}   Ú
setdefaultr   r)   rÚ   rŠ   r^   Úhasattrr  r2   r3   Úmany_to_manyrj   rk   )	rN   r"   rh   rl   r}   rÚ   rŠ   rw   r—   r%   r%   r&   rO   Ï  sF   



ÿÿÿÿÿ€ÿÿÿÿzModelState.__init__c                 C   s
   | j  ¡ S rP   )rh   rf   rR   r%   r%   r&   rU   ó  s   
zModelState.name_lowerc                 C   s    |dkr| j  d|¡}| j| S )NÚ_orderÚorder_with_respect_to)r}   r…   rl   )rN   r¸   r%   r%   r&   Ú	get_field÷  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|rêdD ]	}||v rè||= qßn| d¡dd„ ˆj jD ƒv rû|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;�q1|j�rIt |¡}| ¡  n#|ˆju �sU|ˆju �rjt  ¡ }|j!|_!|j|_|ˆju �ri|}n�q1| "|j¡ | |j|f¡ �q1|d|fgk�r†g }| ˆj j#ˆj j||||ƒS )z3Given a model, return a ModelState representing it.rj   Nz'Couldn't reconstruct field %s on %s: %sz+Couldn't reconstruct m2m field %s on %s: %s)r   r"   rµ   r´   r•   c                 S   ó   g | ]}|  ¡ ‘qS r%   rß   )r*   Úidxr%   r%   r&   r,   .  s    z)ModelState.from_model.<locals>.<listcomp>r¢   c                 S   r'  r%   rß   )r*   Úconr%   r%   r&   r,   4  rþ   )rµ   r´   r%  r%  c                 S   rý   r%   rŽ   )r*   rw   r%   r%   r&   r?   @  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__r"  r!   ÚabstractrC   r5   )r$   rÚ   rÛ   )Úflatten_basesr%   r&   r,  E  s   
z,ModelState.from_model.<locals>.flatten_basesc                    s   ˆ j  | ¡S rP   )Ú__mro__r—   )ÚxrA   r%   r&   Ú<lambda>T  s    z'ModelState.from_model.<locals>.<lambda>©r   c                 s   s&   � | ]}t |d ƒr|jjn|V  qdS )r!   N)r"  r!   Úlabel_lower©r*   rÛ   r%   r%   r&   r  X  s
   € ÿ
ÿz(ModelState.from_model.<locals>.<genexpr>c                 s   s&   � | ]}t |tƒpt|tjƒV  qd S rP   )r   r   r(   r   r)   r2  r%   r%   r&   r  ]  s   € 
ÿÚobjects)$r!   Úlocal_fieldsr»   r   r   ÚOrderWrtrh   r5   rg   Ú	TypeErrorrù   Úlocal_many_to_manyÚobject_namer   Úoriginal_attrsr0   r   r•   Úset_name_with_modelr¢   r…   Úprivate_fieldsr  r    Úanyr)   rŠ   Úuse_in_migrationsr  Ú_set_creation_counterÚ_base_managerÚ_default_managerÚManagerr$   r4   r"   )rë   r$   rü   rl   rw   rh   Úer}   ÚutÚitr•   r—   r   Úflattened_basesrÚ   rŠ   Úmanager_namesÚdefault_manager_shimÚmanagerÚnew_managerr%   )r,  r$   r&   rê   ü  sÜ   ýÿÿ€ÿ	ýÿÿ€ÿ

€
ÿ€€þ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   )Úcreation_counter)rá   r%   r%   r&   r/  Š  s   
 z/ModelState.construct_managers.<locals>.<lambda>r0  N)r  rŠ   Údeconstructr   Ú
as_manager)rN   Úsorted_managersÚmgr_namerH  rL  Úmanager_pathÚqs_pathÚargsÚkwargsÚqs_classÚmanager_classr%   r%   r&   Úconstruct_managers‡  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"   rh   rl   r}   rÚ   rŠ   )	r  r"   rh   rÔ   rl   r}   rÚ   r]   rŠ   rR   r%   r%   r&   rg   ”  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   ÚMetar%   c                 3   s(   � | ]}t |tƒrˆ  |¡n|V  qd S rP   )r   r   rÃ   r2  r   r%   r&   r  ©  s
   € ÿ
ÿz$ModelState.render.<locals>.<genexpr>z(Cannot resolve one or more bases from %rc                 S   rÞ   r%   rß   )r*   rh   rw   r%   r%   r&   râ   ²  r‘   z%ModelState.render.<locals>.<dictcomp>Ú__fake__ró   )r"   r}   Útyper    rÚ   rÄ   r   rl   r^   rÅ   rU  rh   )rN   r   Úmeta_contentsÚmetarÚ   Úbodyr%   r   r&   r  ¢  s    þ
ÿÿzModelState.renderc                 C   ó4   | j d D ]}|j|kr|  S qtd|| jf ƒ‚)Nr•   zNo index named %s on model %s©r}   rh   r  )rN   rh   r—   r%   r%   r&   Úget_index_by_name»  ó
   
ÿzModelState.get_index_by_namec                 C   r\  )Nr¢   z"No constraint named %s on model %sr]  )rN   rh   r£   r%   r%   r&   Úget_constraint_by_nameÁ  r_  z!ModelState.get_constraint_by_namec                 C   s   d| j j| j| jf S )Nz<%s: '%s.%s'>)r  rò   r"   rh   rR   r%   r%   r&   Ú__repr__Ç  s   zModelState.__repr__c                 C   s|   | j |j ko=| j|jko=t| jƒt|jƒko=tdd„ tt| j ¡ ƒt|j ¡ ƒƒD ƒƒo=| j|jko=| j	|j	ko=| j
|j
kS )Nc                 s   sD   � | ]\\}}\}}||ko|  ¡ d d… |  ¡ d d… kV  qdS )r   N)rK  )r*   Úk1Úf1Úk2Úf2r%   r%   r&   r  Ï  s
   € &ÿ
ÿz$ModelState.__eq__.<locals>.<genexpr>)r"   rh   r   rl   ÚallÚzipr  r^   r}   rÚ   rŠ   rî   r%   r%   r&   rð   Ê  s$   
ÿþþþý

ö
õ
ózModelState.__eq__)NNNrñ   )rò   ró   rô   rõ   rO   r   rU   r&  r÷   rê   rU  rg   r  r^  r`  ra  rð   r%   r%   r%   r&   ré   Ä  s"    
ÿ$
 ré   )r   )1r  Úcollectionsr   Ú
contextlibr   Ú	functoolsr   Údjango.appsr   Údjango.apps.registryr   r   r  Údjango.confr	   Údjango.core.exceptionsr
   Ú	django.dbr   Údjango.db.migrations.utilsr   r   Údjango.db.modelsr   Údjango.db.models.fields.relatedr   Údjango.db.models.optionsr   r   Údjango.db.models.utilsr   Údjango.utils.functionalr   Údjango.utils.module_loadingr   Údjango.utils.versionr   Ú
exceptionsr   Úutilsr   r'   r=   rB   rH   rI   rø   ræ   ré   r%   r%   r%   r&   Ú<module>   s>    
   ko