U
     5i~                     @   s  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mZmZmZ d	d
 ZG dd deZG dd deZG dd deZG dd deZG dd deZG dd deZG dd deZG dd deZG dd deZG dd deZG dd  d eZG d!d" d"eZG d#d$ d$eZ G d%d& d&e Z!G d'd( d(e Z"G d)d* d*e Z#G d+d, d,e Z$d-S ).    )models)	Operation)
ModelState)field_referencesresolve_relation)normalize_together)cached_property   )AddField
AlterFieldFieldOperationRemoveFieldRenameFieldc                 C   s6   t  }|D ]&}||kr&td|| f || q
d S )Nz4Found duplicate value %s in CreateModel %s argument.)set
ValueErroradd)Zarg_nameobjsZ	used_valsval r   J/tmp/pip-unpacked-wheel-gcyiijx6/django/db/migrations/operations/models.py_check_for_duplicates   s    
r   c                       s8   e Zd Zdd Zedd Zdd Z fddZ  ZS )	ModelOperationc                 C   s
   || _ d S Nname)selfr   r   r   r   __init__   s    zModelOperation.__init__c                 C   s
   | j  S r   )r   lowerr   r   r   r   
name_lower   s    zModelOperation.name_lowerc                 C   s   |  | jkS r   r   r   r   r   	app_labelr   r   r   references_model   s    zModelOperation.references_modelc                    s   t  ||p|| j| S r   )superreducer#   r   r   	operationr"   	__class__r   r   r%   "   s    zModelOperation.reduce)	__name__
__module____qualname__r   r   r   r#   r%   __classcell__r   r   r(   r   r      s
   
r   c                       st   e Zd ZdZdddgZd fdd	Zdd	 Zd
d Zdd Zdd Z	dd Z
edd Zdd Z fddZ  ZS )CreateModelzCreate a model's table.fieldsoptionsmanagersNc                    sz   || _ |pi | _|ptjf| _|p$g | _t | tddd | j D  tddd | jD  tddd | jD  d S )Nr/   c                 s   s   | ]\}}|V  qd S r   r   .0r   _r   r   r   	<genexpr>6   s     z'CreateModel.__init__.<locals>.<genexpr>basesc                 s   s6   | ].}t |d r|jjnt|tr*| n|V  qdS )_metaN)hasattrr7   Zlabel_lower
isinstancestrr   )r3   baser   r   r   r5   7   s   r1   c                 s   s   | ]\}}|V  qd S r   r   r2   r   r   r   r5   <   s     )	r/   r0   r   Modelr6   r1   r$   r   r   )r   r   r/   r0   r6   r1   r(   r   r   r   .   s    


zCreateModel.__init__c                 C   sn   | j | jd}| jr| j|d< | jr<| jtjfkr<| j|d< | jr`| jdt fgkr`| j|d< | jj	g |fS )N)r   r/   r0   r6   Zobjectsr1   )
r   r/   r0   r6   r   r<   r1   Managerr)   r,   r   kwargsr   r   r   deconstruct>   s    


zCreateModel.deconstructc              
   C   s6   | t|| jt| jt| jt| jt| j	 d S r   )
Z	add_modelr   r   listr/   dictr0   tupler6   r1   r   r"   stater   r   r   state_forwardsO   s    zCreateModel.state_forwardsc                 C   s.   |j || j}| |jj|r*|| d S r   apps	get_modelr   allow_migrate_model
connectionaliasZcreate_modelr   r"   schema_editor
from_stateto_statemodelr   r   r   database_forwardsY   s    zCreateModel.database_forwardsc                 C   s.   |j || j}| |jj|r*|| d S r   rH   rI   r   rJ   rK   rL   Zdelete_modelrM   r   r   r   database_backwards^   s    zCreateModel.database_backwardsc                 C   s    d| j ddrdnd| jf S )NzCreate %smodel %sproxyFzproxy  )r0   getr   r   r   r   r   describec   s    zCreateModel.describec                 C   s   | j S r   r   r   r   r   r   migration_name_fragmentf   s    z#CreateModel.migration_name_fragmentc                 C   s   |  }|| jkrdS ||f}| jD ]4}|tjk	r$t|tjjtfr$t	|||kr$ dS q$| j
D ] \}}t|| jf||r` dS q`dS )NTF)r   r   r6   r   r<   r9   r;   Z	ModelBaser:   r   r/   r   )r   r   r"   r   Zreference_model_tupler;   _namefieldr   r   r   r#   j   s    

zCreateModel.references_modelc                    s  t  tr(| j jkr(| jdds(g S t  tr\| j jkr\t j| j	| j| j
| jdgS t  tr| j jkr| j j} jD ]}| jkr||d  qt| j| j	|| j
| jdgS t  tr | j jkr t| j| j	| j j ji| j
| jdgS t  trB| j jkrBt| j| j	| jd ji| j
| jdgS t  tr| j jkrt  trt| j| j	 j jfg | j| j
| jdgS t  trt| j fdd| j	D | j| j
| jdgS t  trp| j }dD ]B}||d }|rttt fdd	|D }|r|||< q|d}| jkrF|d= t| j fd
d| j	D || j
| jdgS t  tr| j }dD ],}||}|r fdd|D ||< q|d}| j kr؈ j|d< t| j fdd| j	D || j
| jdgS t! " |S )NrU   F)r/   r0   r6   r1   order_with_respect_toc                    s(   g | ] \}}|| j kr jn|fqS r   )r   r\   r3   nvr'   r   r   
<listcomp>   s   z&CreateModel.reduce.<locals>.<listcomp>)unique_togetherindex_togetherc                 3   s$   | ]}t  fd d|D V  qdS )c                 3   s   | ]}| j kr|V  qd S r   rY   r3   fra   r   r   r5      s     
 z/CreateModel.reduce.<locals>.<genexpr>.<genexpr>NrC   r3   r/   ra   r   r   r5      s    z%CreateModel.reduce.<locals>.<genexpr>c                    s&   g | ]\}}|   jkr||fqS r   r    r^   ra   r   r   rb      s   c                    s"   h | ]}t  fd d|D qS )c                 3   s"   | ]}| j kr jn|V  qd S r   old_namenew_namere   ra   r   r   r5      s     z/CreateModel.reduce.<locals>.<setcomp>.<genexpr>rg   rh   ra   r   r   	<setcomp>   s   z%CreateModel.reduce.<locals>.<setcomp>c                    s(   g | ] \}}| j kr jn||fqS r   ri   r^   ra   r   r   rb      s   )#r9   DeleteModelr   r0   rW   RenameModelold_name_lowerr.   rk   r/   r6   r1   AlterModelOptionsALTER_OPTION_KEYSpopr   AlterTogetherOptionOperationoption_nameoption_valueAlterOrderWithRespectTor]   r   model_name_lowerr
   r\   r   r   copyr   filterboolr   rj   r$   r%   )r   r'   r"   r0   keyrt   optionr]   r(   ra   r   r%   |   s    

	

				










zCreateModel.reduce)NNN)r*   r+   r,   __doc__serialization_expand_argsr   r@   rF   rR   rT   rX   propertyrZ   r#   r%   r-   r   r   r(   r   r.   )   s   


r.   c                   @   sL   e Zd ZdZdd Zdd Zdd Zdd	 Zd
d Zdd Z	e
dd ZdS )rm   zDrop a model's table.c                 C   s   d| j i}| jjg |fS Nr   )r   r)   r,   r>   r   r   r   r@      s     zDeleteModel.deconstructc                 C   s   | || j d S r   )Zremove_modelr   rD   r   r   r   rF     s    zDeleteModel.state_forwardsc                 C   s.   |j || j}| |jj|r*|| d S r   rS   rM   r   r   r   rR   
  s    zDeleteModel.database_forwardsc                 C   s.   |j || j}| |jj|r*|| d S r   rG   rM   r   r   r   rT     s    zDeleteModel.database_backwardsc                 C   s   dS )NTr   r!   r   r   r   r#     s    zDeleteModel.references_modelc                 C   s
   d| j  S )NzDelete model %sr   r   r   r   r   rX     s    zDeleteModel.describec                 C   s
   d| j  S )Nz	delete_%srY   r   r   r   r   rZ     s    z#DeleteModel.migration_name_fragmentN)r*   r+   r,   r}   r@   rF   rR   rT   r#   rX   r   rZ   r   r   r   r   rm      s   
rm   c                       s   e Zd ZdZ fddZedd Zedd Zdd	 Zd
d Z	dd Z
dd Zdd Zdd Zedd Z fddZ  ZS )rn   zRename a model.c                    s   || _ || _t | d S r   )rj   rk   r$   r   )r   rj   rk   r(   r   r   r   $  s    zRenameModel.__init__c                 C   s
   | j  S r   )rj   r   r   r   r   r   ro   )  s    zRenameModel.old_name_lowerc                 C   s
   | j  S r   )rk   r   r   r   r   r   new_name_lower-  s    zRenameModel.new_name_lowerc                 C   s   | j | jd}| jjg |fS )Nri   )rj   rk   r)   r,   r>   r   r   r   r@   1  s    zRenameModel.deconstructc                 C   s   | || j| j d S r   )Zrename_modelrj   rk   rD   r   r   r   rF   <  s    zRenameModel.state_forwardsc                 C   s<  |j || j}| |jj|r8|j || j}|||jj	|jj	 |jj
D ]`}|j|krn|}|| jf}	n|j}|jjj|jjjf}	|j j|	 j|jj}
|||j|
 qPt|jj|jj}|D ]n\}}|j|jks|jjjjsq|jj}|jj}|||jj	|jj	 |||j|jj|j|jj qd S r   )rH   rI   rk   rJ   rK   rL   rj   alter_db_tabler7   db_tableZrelated_objectsZrelated_modelr   r"   
model_name	get_fieldr\   r   Zalter_fieldziplocal_many_to_manyrQ   remote_fieldthroughauto_created)r   r"   rN   rO   rP   	new_model	old_modelZrelated_objectrQ   Zrelated_keyZto_fieldr/   	old_field	new_fieldZold_m2m_modelZnew_m2m_modelr   r   r   rR   ?  sT    
zRenameModel.database_forwardsc                 C   s\   | j | j | _| _ | j| j | _| _| |||| | j | j | _| _ | j| j | _| _d S r   )ro   r   rj   rk   rR   r   r"   rN   rO   rP   r   r   r   rT   r  s
    zRenameModel.database_backwardsc                 C   s   |  | jkp|  | jkS r   )r   ro   r   r!   r   r   r   r#   {  s    zRenameModel.references_modelc                 C   s   d| j | jf S )NzRename model %s to %sri   r   r   r   r   rX     s    zRenameModel.describec                 C   s   d| j | jf S )Nzrename_%s_%s)ro   r   r   r   r   r   rZ     s    z#RenameModel.migration_name_fragmentc                    sH   t |tr&| j|jkr&t| j|jgS tt| ||pF|	| j| S r   )
r9   rn   r   ro   rj   rk   r$   r   r%   r#   r&   r(   r   r   r%     s    

	zRenameModel.reduce)r*   r+   r,   r}   r   r   ro   r   r@   rF   rR   rT   r#   rX   r   rZ   r%   r-   r   r   r(   r   rn   !  s   

3	
rn   c                       s   e Zd Z fddZ  ZS )ModelOptionOperationc                    s0   t || jtfr"| j|jkr"|gS t ||S r   )r9   r)   rm   r   r$   r%   r&   r(   r   r   r%     s    zModelOptionOperation.reduce)r*   r+   r,   r%   r-   r   r   r(   r   r     s   r   c                       sT   e Zd ZdZ fddZdd Zdd Zdd	 Zd
d Zdd Z	e
dd Z  ZS )AlterModelTablezRename a model's table.c                    s   || _ t | d S r   )tabler$   r   )r   r   r   r(   r   r   r     s    zAlterModelTable.__init__c                 C   s   | j | jd}| jjg |fS )Nr   r   )r   r   r)   r,   r>   r   r   r   r@     s    zAlterModelTable.deconstructc                 C   s   | || jd| ji d S )Nr   )alter_model_optionsr   r   rD   r   r   r   rF     s    zAlterModelTable.state_forwardsc           	      C   s   |j || j}| |jj|r|j || j}|||jj|jj t	|jj
|jj
D ]6\}}|jjjjrX||jj|jjjj|jjjj qXd S r   )rH   rI   r   rJ   rK   rL   r   r7   r   r   r   r   r   r   )	r   r"   rN   rO   rP   r   r   r   r   r   r   r   rR     s    

z!AlterModelTable.database_forwardsc                 C   s   |  ||||S r   rR   r   r   r   r   rT     s    z"AlterModelTable.database_backwardsc                 C   s   d| j | jd k	r| jndf S )NzRename table for %s to %sz	(default)r   r   r   r   r   rX     s    zAlterModelTable.describec                 C   s
   d| j  S )Nzalter_%s_tablerY   r   r   r   r   rZ     s    z'AlterModelTable.migration_name_fragment)r*   r+   r,   r}   r   r@   rF   rR   rT   rX   r   rZ   r-   r   r   r(   r   r     s   r   c                       sh   e Zd ZdZ fddZedd Zdd Zdd	 Zd
d Z	dd Z
dd Zdd Zedd Z  ZS )rs   Nc                    s.   |rt t|}t| | j| t | d S r   )r   r   setattrrt   r$   r   )r   r   ru   r(   r   r   r     s    z%AlterTogetherOptionOperation.__init__c                 C   s   t | | jS r   )getattrrt   r   r   r   r   ru     s    z)AlterTogetherOptionOperation.option_valuec                 C   s    d| j | j| ji}| jjg |fS r   )r   rt   ru   r)   r,   r>   r   r   r   r@     s      z(AlterTogetherOptionOperation.deconstructc                 C   s   | || j| j| ji d S r   )r   r   rt   ru   rD   r   r   r   rF     s
    
z+AlterTogetherOptionOperation.state_forwardsc                 C   sl   |j || j}| |jj|rh|j || j}t|d| j }||t|j| jt	 t|j| jt	  d S )Nzalter_%s)
rH   rI   r   rJ   rK   rL   r   rt   r7   r   )r   r"   rN   rO   rP   r   r   Zalter_togetherr   r   r   rR     s    z.AlterTogetherOptionOperation.database_forwardsc                 C   s   |  ||||S r   r   r   r   r   r   rT     s    z/AlterTogetherOptionOperation.database_backwardsc                    s,   |  ||o*| j p*t fdd| jD S )Nc                 3   s   | ]} |kV  qd S r   r   rh   r   r   r   r5     s     z@AlterTogetherOptionOperation.references_field.<locals>.<genexpr>)r#   ru   anyr   r   r   r"   r   r   r   references_field  s    z-AlterTogetherOptionOperation.references_fieldc                 C   s   d| j | jt| jpdf S )Nz"Alter %s for %s (%s constraint(s))rV   )rt   r   lenru   r   r   r   r   rX     s    z%AlterTogetherOptionOperation.describec                 C   s   d| j | jf S )Nzalter_%s_%s)r   rt   r   r   r   r   rZ     s    z4AlterTogetherOptionOperation.migration_name_fragment)r*   r+   r,   rt   r   r   ru   r@   rF   rR   rT   r   rX   r   rZ   r-   r   r   r(   r   rs     s   
	rs   c                       s$   e Zd ZdZdZ fddZ  ZS )AlterUniqueTogetherz|
    Change the value of unique_together to the target one.
    Input value of unique_together must be a set of tuples.
    rc   c                    s   t  || d S r   r$   r   )r   r   rc   r(   r   r   r     s    zAlterUniqueTogether.__init__r*   r+   r,   r}   rt   r   r-   r   r   r(   r   r     s   r   c                       s$   e Zd ZdZdZ fddZ  ZS )AlterIndexTogetherzz
    Change the value of index_together to the target one.
    Input value of index_together must be a set of tuples.
    rd   c                    s   t  || d S r   r   )r   r   rd   r(   r   r   r   %  s    zAlterIndexTogether.__init__r   r   r   r(   r   r     s   r   c                       s`   e Zd ZdZdZ fddZdd Zdd Zd	d
 Zdd Z	dd Z
dd Zedd Z  ZS )rv   z9Represent a change with the order_with_respect_to option.r]   c                    s   || _ t | d S r   )r]   r$   r   )r   r   r]   r(   r   r   r   .  s    z AlterOrderWithRespectTo.__init__c                 C   s   | j | jd}| jjg |fS )Nr   r]   )r   r]   r)   r,   r>   r   r   r   r@   2  s    z#AlterOrderWithRespectTo.deconstructc                 C   s   | || j| j| ji d S r   )r   r   rt   r]   rD   r   r   r   rF   =  s
    
z&AlterOrderWithRespectTo.state_forwardsc                 C   s   |j || j}| |jj|r|j || j}|jjrV|jjsV|||j	d n6|jjr|jjs|j	d}|
 sd|_||| d S )N_orderr   )rH   rI   r   rJ   rK   rL   r7   r]   Zremove_fieldr   Zhas_defaultdefaultZ	add_field)r   r"   rN   rO   rP   Zto_modelZ
from_modelr\   r   r   r   rR   D  s    z)AlterOrderWithRespectTo.database_forwardsc                 C   s   |  |||| d S r   r   r   r   r   r   rT   V  s    z*AlterOrderWithRespectTo.database_backwardsc                 C   s    |  ||o| jd kp|| jkS r   )r#   r]   r   r   r   r   r   Y  s    
z(AlterOrderWithRespectTo.references_fieldc                 C   s   d| j | jf S )Nz%Set order_with_respect_to on %s to %sr   r   r   r   r   rX   b  s    z AlterOrderWithRespectTo.describec                 C   s
   d| j  S )Nzalter_%s_order_with_respect_torY   r   r   r   r   rZ   e  s    z/AlterOrderWithRespectTo.migration_name_fragment)r*   r+   r,   r}   rt   r   r@   rF   rR   rT   r   rX   r   rZ   r-   r   r   r(   r   rv   )  s   	rv   c                       sn   e Zd ZdZdddddddd	d
ddgZ fddZdd Zdd Zdd Zdd Z	dd Z
edd Z  ZS )rp   z
    Set new model options that don't directly affect the database schema
    (like verbose_name, permissions, ordering). Python code in migrations
    may still need them.
    Zbase_manager_nameZdefault_manager_nameZdefault_related_nameZget_latest_byZmanagedZorderingpermissionsZdefault_permissionsZselect_on_saveZverbose_nameZverbose_name_pluralc                    s   || _ t | d S r   )r0   r$   r   )r   r   r0   r(   r   r   r     s    zAlterModelOptions.__init__c                 C   s   | j | jd}| jjg |fS )N)r   r0   )r   r0   r)   r,   r>   r   r   r   r@     s    zAlterModelOptions.deconstructc                 C   s   | || j| j| j d S r   )r   r   r0   rq   rD   r   r   r   rF     s    z AlterModelOptions.state_forwardsc                 C   s   d S r   r   r   r   r   r   rR     s    z#AlterModelOptions.database_forwardsc                 C   s   d S r   r   r   r   r   r   rT     s    z$AlterModelOptions.database_backwardsc                 C   s
   d| j  S )NzChange Meta options on %sr   r   r   r   r   rX     s    zAlterModelOptions.describec                 C   s
   d| j  S )Nzalter_%s_optionsrY   r   r   r   r   rZ     s    z)AlterModelOptions.migration_name_fragment)r*   r+   r,   r}   rq   r   r@   rF   rR   rT   rX   r   rZ   r-   r   r   r(   r   rp   j  s*   rp   c                       sZ   e Zd ZdZdgZ fddZdd Zdd Zd	d
 Zdd Z	dd Z
edd Z  ZS )AlterModelManagerszAlter the model's managers.r1   c                    s   || _ t | d S r   )r1   r$   r   )r   r   r1   r(   r   r   r     s    zAlterModelManagers.__init__c                 C   s   | j j| j| jgi fS r   )r)   r,   r   r1   r   r   r   r   r@     s    
zAlterModelManagers.deconstructc                 C   s   | || j| j d S r   )Zalter_model_managersr   r1   rD   r   r   r   rF     s    z!AlterModelManagers.state_forwardsc                 C   s   d S r   r   r   r   r   r   rR     s    z$AlterModelManagers.database_forwardsc                 C   s   d S r   r   r   r   r   r   rT     s    z%AlterModelManagers.database_backwardsc                 C   s
   d| j  S )NzChange managers on %sr   r   r   r   r   rX     s    zAlterModelManagers.describec                 C   s
   d| j  S )Nzalter_%s_managersrY   r   r   r   r   rZ     s    z*AlterModelManagers.migration_name_fragment)r*   r+   r,   r}   r~   r   r@   rF   rR   rT   rX   r   rZ   r-   r   r   r(   r   r     s   r   c                   @   s   e Zd ZdZedd ZdS )IndexOperationZindexesc                 C   s
   | j  S r   )r   r   r   r   r   r   rw     s    zIndexOperation.model_name_lowerN)r*   r+   r,   rt   r   rw   r   r   r   r   r     s   r   c                   @   sL   e Zd ZdZdd Zdd Zdd Zdd	 Zd
d Zdd Z	e
dd ZdS )AddIndexzAdd an index on a model.c                 C   s"   || _ |jstd| || _d S )NzSIndexes passed to AddIndex operations require a name argument. %r doesn't have one.)r   r   r   index)r   r   r   r   r   r   r     s    zAddIndex.__init__c                 C   s   | || j| j d S r   )	add_indexrw   r   rD   r   r   r   rF     s    zAddIndex.state_forwardsc                 C   s2   |j || j}| |jj|r.||| j d S r   )rH   rI   r   rJ   rK   rL   r   r   rM   r   r   r   rR     s    zAddIndex.database_forwardsc                 C   s2   |j || j}| |jj|r.||| j d S r   )rH   rI   r   rJ   rK   rL   remove_indexr   rM   r   r   r   rT     s    zAddIndex.database_backwardsc                 C   s   | j | jd}| jjg |fS )N)r   r   )r   r   r)   r,   r>   r   r   r   r@     s    zAddIndex.deconstructc                 C   sN   | j jr0d| j jddd | j jD | jf S d| j jd| j j| jf S )Nz!Create index %s on %s on model %sz, c                 S   s   g | ]}t |qS r   )r:   )r3   Z
expressionr   r   r   rb     s     z%AddIndex.describe.<locals>.<listcomp>z*Create index %s on field(s) %s of model %s)r   Zexpressionsr   joinr   r/   r   r   r   r   rX     s    zAddIndex.describec                 C   s   d| j | jj f S Nz%s_%s)rw   r   r   r   r   r   r   r   rZ     s    z AddIndex.migration_name_fragmentNr*   r+   r,   r}   r   rF   rR   rT   r@   rX   r   rZ   r   r   r   r   r     s   	r   c                   @   sL   e Zd ZdZdd Zdd Zdd Zdd	 Zd
d Zdd Z	e
dd ZdS )RemoveIndexzRemove an index from a model.c                 C   s   || _ || _d S r   r   r   r   r   r   r   r   r   r     s    zRemoveIndex.__init__c                 C   s   | || j| j d S r   )r   rw   r   rD   r   r   r   rF     s    zRemoveIndex.state_forwardsc                 C   sL   |j || j}| |jj|rH|j|| jf }|| j	}|
|| d S r   )rH   rI   r   rJ   rK   rL   r   rw   get_index_by_namer   r   )r   r"   rN   rO   rP   rQ   from_model_stater   r   r   r   rR     s
    zRemoveIndex.database_forwardsc                 C   sL   |j || j}| |jj|rH|j|| jf }|| j	}|
|| d S r   )rH   rI   r   rJ   rK   rL   r   rw   r   r   r   )r   r"   rN   rO   rP   rQ   to_model_stater   r   r   r   rT     s
    zRemoveIndex.database_backwardsc                 C   s   | j | jd}| jjg |fS Nr   )r   r   r)   r,   r>   r   r   r   r@     s    zRemoveIndex.deconstructc                 C   s   d| j | jf S )NzRemove index %s from %sr   r   r   r   r   r   rX   '  s    zRemoveIndex.describec                 C   s   d| j | j f S Nzremove_%s_%srw   r   r   r   r   r   r   rZ   *  s    z#RemoveIndex.migration_name_fragmentNr   r   r   r   r   r     s   r   c                   @   sL   e Zd ZdZdd Zdd Zdd Zdd	 Zd
d Zdd Z	e
dd ZdS )AddConstraintconstraintsc                 C   s   || _ || _d S r   r   
constraint)r   r   r   r   r   r   r   2  s    zAddConstraint.__init__c                 C   s   | || j| j d S r   )add_constraintrw   r   rD   r   r   r   rF   6  s    zAddConstraint.state_forwardsc                 C   s2   |j || j}| |jj|r.||| j d S r   )rH   rI   r   rJ   rK   rL   r   r   rM   r   r   r   rR   9  s    zAddConstraint.database_forwardsc                 C   s2   |j || j}| |jj|r.||| j d S r   )rH   rI   r   rJ   rK   rL   remove_constraintr   rM   r   r   r   rT   >  s    z AddConstraint.database_backwardsc                 C   s   | j jg | j| jdfS )Nr   )r)   r*   r   r   r   r   r   r   r@   C  s    zAddConstraint.deconstructc                 C   s   d| j j| jf S )Nz Create constraint %s on model %s)r   r   r   r   r   r   r   rX   I  s    zAddConstraint.describec                 C   s   d| j | jj f S r   )rw   r   r   r   r   r   r   r   rZ   L  s    z%AddConstraint.migration_name_fragmentNr*   r+   r,   rt   r   rF   rR   rT   r@   rX   r   rZ   r   r   r   r   r   /  s   r   c                   @   sL   e Zd ZdZdd Zdd Zdd Zdd	 Zd
d Zdd Z	e
dd ZdS )RemoveConstraintr   c                 C   s   || _ || _d S r   r   r   r   r   r   r   T  s    zRemoveConstraint.__init__c                 C   s   | || j| j d S r   )r   rw   r   rD   r   r   r   rF   X  s    zRemoveConstraint.state_forwardsc                 C   sL   |j || j}| |jj|rH|j|| jf }|| j	}|
|| d S r   )rH   rI   r   rJ   rK   rL   r   rw   get_constraint_by_namer   r   )r   r"   rN   rO   rP   rQ   r   r   r   r   r   rR   [  s
    z"RemoveConstraint.database_forwardsc                 C   sL   |j || j}| |jj|rH|j|| jf }|| j	}|
|| d S r   )rH   rI   r   rJ   rK   rL   r   rw   r   r   r   )r   r"   rN   rO   rP   rQ   r   r   r   r   r   rT   b  s
    z#RemoveConstraint.database_backwardsc                 C   s   | j jg | j| jdfS r   )r)   r*   r   r   r   r   r   r   r@   i  s    zRemoveConstraint.deconstructc                 C   s   d| j | jf S )Nz"Remove constraint %s from model %sr   r   r   r   r   rX   o  s    zRemoveConstraint.describec                 C   s   d| j | j f S r   r   r   r   r   r   rZ   r  s    z(RemoveConstraint.migration_name_fragmentNr   r   r   r   r   r   Q  s   r   N)%Z	django.dbr   Z$django.db.migrations.operations.baser   Zdjango.db.migrations.stater   Zdjango.db.migrations.utilsr   r   Zdjango.db.models.optionsr   Zdjango.utils.functionalr   r/   r
   r   r   r   r   r   r   r.   rm   rn   r   r   rs   r   r   rv   rp   r   r   r   r   r   r   r   r   r   r   <module>   s2   
 R'x5>A;!6+"