3
v^                 @   s  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mZmZmZ ddl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$d-S ).    )models)	Operation)
ModelState)normalize_together)cached_property   )AddField
AlterFieldFieldOperationRemoveFieldRenameField)
ModelTuplefield_references_modelc             C   s:   t  }x.|D ]&}||kr(td|| f |j| qW d S )Nz4Found duplicate value %s in CreateModel %s argument.)set
ValueErroradd)arg_nameobjsZ	used_valsval r   J/usr/lib/python3.6/site-packages/django/db/migrations/operations/models.py_check_for_duplicates   s    
r   c                   s<   e Zd Zdd Zedd Zd
ddZd fdd		Z  ZS )ModelOperationc             C   s
   || _ d S )N)name)selfr   r   r   r   __init__   s    zModelOperation.__init__c             C   s
   | j j S )N)r   lower)r   r   r   r   
name_lower   s    zModelOperation.name_lowerNc             C   s   |j  | jkS )N)r   r   )r   r   	app_labelr   r   r   references_model   s    zModelOperation.references_modelc                s    t  j||dp|j| j| S )N)r   )superreducer   r   )r   	operationr   )	__class__r   r   r!   "   s    zModelOperation.reduce)N)N)	__name__
__module____qualname__r   r   r   r   r!   __classcell__r   r   )r#   r   r      s   
r   c                   sl   e Zd ZdZdddgZd fdd	Zdd	 Zd
d Zdd Zdd Z	dd Z
dddZd fdd	Z  ZS )CreateModelzCreate a model's table.fieldsoptionsmanagersNc                sz   || _ |pi | _|ptjf| _|p$g | _t j| 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 )Nr   ).0r   _r   r   r   	<genexpr>6   s    z'CreateModel.__init__.<locals>.<genexpr>basesc             s   s6   | ].}t |d r|jjnt|tr*|j n|V  qdS )_metaN)hasattrr0   label_lower
isinstancestrr   )r,   baser   r   r   r.   8   s   r+   c             s   s   | ]\}}|V  qd S )Nr   )r,   r   r-   r   r   r   r.   <   s    )	r)   r*   r   Modelr/   r+   r    r   r   )r   r   r)   r*   r/   r+   )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j fgkr`| j|d< | jj	g |fS )N)r   r)   r*   r/   objectsr+   )
r   r)   r*   r/   r   r6   r+   Managerr#   r&   )r   kwargsr   r   r   deconstruct>   s    



zCreateModel.deconstructc          	   C   s6   |j t|| jt| jt| jt| jt| j	 d S )N)
Z	add_modelr   r   listr)   dictr*   tupler/   r+   )r   r   stater   r   r   state_forwardsO   s    zCreateModel.state_forwardsc             C   s.   |j j|| j}| j|jj|r*|j| d S )N)apps	get_modelr   allow_migrate_model
connectionalias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|jj|r*|j| d S )N)r@   rA   r   rB   rC   rD   delete_model)r   r   rF   rG   rH   rI   r   r   r   database_backwards^   s    zCreateModel.database_backwardsc             C   s    d| j jddrdnd| jf S )NzCreate %smodel %sproxyFzproxy  )r*   getr   )r   r   r   r   describec   s    zCreateModel.describec             C   s   |j  }|| jkrdS t||}x<| jD ]2}|tjk	r(t|tjjt	fr(tj
||kr(dS q(W x | jD ]\}}t||rfdS qfW dS )NTF)r   r   r   r/   r   r6   r3   r5   	ModelBaser4   
from_modelr)   r   )r   r   r   r   model_tupler5   _namefieldr   r   r   r   f   s    


zCreateModel.references_modelc                s  t  tr*| j jkr*| jjdd r*g S t  tr^| j jkr^t j| j	| j| j
| jdgS t  tr| j jkrt| j| j	| j j| j
| jdgS t  tr| j jkrt| j| j	| j j ji| j
| jdgS t  to| j jkrt| j| j	| jd ji| j
| jdgS t  tr| j jkrt  trjt| 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rJ| jj }xJdD ]B}|j|d }|rttt fd	d
|D }|r|||< qW |jd}| jkr |d= t| j fdd| j	D || j
| jdgS t  tr| jj }x4dD ],}|j|}|rf fdd|D ||< qfW |jd}| jkr j|d< t| j fdd| j	D || j
| jdgS t  j! |dS )NrM   F)r)   r*   r/   r+   order_with_respect_toc                s(   g | ] \}}|| j kr jn|fqS r   )r   rU   )r,   nv)r"   r   r   
<listcomp>   s   z&CreateModel.reduce.<locals>.<listcomp>unique_togetherindex_togetherc             3   s$   | ]}t  fd d|D V  qdS )c             3   s   | ]}| j kr|V  qd S )N)r   )r,   f)r"   r   r   r.      s    z/CreateModel.reduce.<locals>.<genexpr>.<genexpr>N)r=   )r,   r)   )r"   r   r   r.      s    z%CreateModel.reduce.<locals>.<genexpr>c                s&   g | ]\}}|j   jkr||fqS r   )r   r   )r,   rW   rX   )r"   r   r   rY      s   c                s"   h | ]}t  fd d|D qS )c             3   s"   | ]}| j kr jn|V  qd S )N)old_namenew_name)r,   r\   )r"   r   r   r.      s    z/CreateModel.reduce.<locals>.<setcomp>.<genexpr>)r=   )r,   r)   )r"   r   r   	<setcomp>   s   z%CreateModel.reduce.<locals>.<setcomp>c                s(   g | ] \}}| j kr jn||fqS r   )r]   r^   )r,   rW   rX   )r"   r   r   rY      s   )r   )rZ   r[   )rZ   r[   )"r3   DeleteModelr   r*   rO   RenameModelold_name_lowerr(   r^   r)   r/   r+   AlterModelOptionsr   AlterTogetherOptionOperationoption_nameoption_valueAlterOrderWithRespectTorV   r
   model_name_lowerr   rU   r	   r   copypopr   filterboolr   r]   r    r!   )r   r"   r   r*   re   optionrV   )r#   )r"   r   r!   x   s    













zCreateModel.reduce)NNN)N)N)r$   r%   r&   __doc__serialization_expand_argsr   r:   r?   rJ   rL   rP   r   r!   r'   r   r   )r#   r   r(   )   s   


r(   c               @   sB   e Zd ZdZdd Zdd Zdd Zdd	 ZdddZdd Z	d
S )r`   zDrop a model's table.c             C   s   d| j i}| jjg |fS )Nr   )r   r#   r&   )r   r9   r   r   r   r:      s    
zDeleteModel.deconstructc             C   s   |j || j d S )N)remove_modelr   )r   r   r>   r   r   r   r?      s    zDeleteModel.state_forwardsc             C   s.   |j j|| j}| j|jj|r*|j| d S )N)r@   rA   r   rB   rC   rD   rK   )r   r   rF   rG   rH   rI   r   r   r   rJ     s    zDeleteModel.database_forwardsc             C   s.   |j j|| j}| j|jj|r*|j| d S )N)r@   rA   r   rB   rC   rD   rE   )r   r   rF   rG   rH   rI   r   r   r   rL     s    zDeleteModel.database_backwardsNc             C   s   dS )NTr   )r   r   r   r   r   r   r     s    zDeleteModel.references_modelc             C   s
   d| j  S )NzDelete model %s)r   )r   r   r   r   rP     s    zDeleteModel.describe)N)
r$   r%   r&   rn   r:   r?   rJ   rL   r   rP   r   r   r   r   r`      s   

r`   c                   sx   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dZdd Zd fdd	Z  ZS )ra   zRename a model.c                s   || _ || _t j| d S )N)r]   r^   r    r   )r   r]   r^   )r#   r   r   r     s    zRenameModel.__init__c             C   s
   | j j S )N)r]   r   )r   r   r   r   rb     s    zRenameModel.old_name_lowerc             C   s
   | j j S )N)r^   r   )r   r   r   r   new_name_lower!  s    zRenameModel.new_name_lowerc             C   s   | j | jd}| jjg |fS )N)r]   r^   )r]   r^   r#   r&   )r   r9   r   r   r   r:   %  s
    
zRenameModel.deconstructc             C   sT  |j || jf j }| j|_||j || jf< t|| j}d|| jf }g }x|j j D ]\\}}}	d}
xt|	j	D ]\}\}}d }|j
}|rtj|j||}||kr|j }||j
_t|dd }|rtj|||}||kr|d kr|j }||j
_|rr||f|	j	|< d}
qrW |
rV|j||f qVW |j|dd |j|| j |j|| jdd d S )Nz%s.%sFthroughT)delay)r   rb   cloner^   r   rq   r   items	enumerater)   remote_fieldrR   rI   getattrrr   appendZreload_modelsrp   reload_model)r   r   r>   Zrenamed_modelZold_model_tupleZnew_remote_modelZ	to_reloadmodel_app_label
model_namemodel_stateZmodel_changedindexr   rU   Zchanged_fieldrw   remote_model_tupleZthrough_modelZthrough_model_tupler   r   r   r?   0  sB    
zRenameModel.state_forwardsc             C   sF  |j j|| j}| j|jj|rB|j j|| j}|j||jj	|jj	 xl|jj
D ]`}|j|krp|}|| jf}	n|j}|jjj|jjjf}	|j j|	 jj|jj}
|j||j|
 qRW t|jj|jj}xx|D ]p\}}|j|jks|jjjj rq|jj}|jj}|j||jj	|jj	 |j||jj|jj|jj|jj qW d S )N)r@   rA   r^   rB   rC   rD   r]   alter_db_tabler0   db_tablerelated_objectsrelated_modelrq   r   r|   	get_fieldrU   r   alter_fieldziplocal_many_to_manyrI   rw   rr   auto_created)r   r   rF   rG   rH   	new_model	old_modelrelated_objectrI   Zrelated_keyto_fieldr)   	old_field	new_fieldZold_m2m_modelZnew_m2m_modelr   r   r   rJ   Y  sF    




zRenameModel.database_forwardsc             C   s\   | j | j | _| _ | j| j | _| _| j|||| | j | j | _| _ | j| j | _| _d S )N)rb   rq   r]   r^   rJ   )r   r   rF   rG   rH   r   r   r   rL     s
    zRenameModel.database_backwardsNc             C   s   |j  | jkp|j  | jkS )N)r   rb   rq   )r   r   r   r   r   r   r     s    zRenameModel.references_modelc             C   s   d| j | jf S )NzRename model %s to %s)r]   r^   )r   r   r   r   rP     s    zRenameModel.describec                sJ   t |tr&| j|jkr&t| j|jgS tt| j||dpH|j	| j| S )N)r   )
r3   ra   rq   rb   r]   r^   r    r   r!   r   )r   r"   r   )r#   r   r   r!     s    

zRenameModel.reduce)N)N)r$   r%   r&   rn   r   r   rb   rq   r:   r?   rJ   rL   r   rP   r!   r'   r   r   )r#   r   ra     s   )3	
ra   c                   s   e Zd Zd fdd	Z  ZS )ModelOptionOperationNc                s2   t || jtfr"| j|jkr"|gS t j||dS )N)r   )r3   r#   r`   r   r    r!   )r   r"   r   )r#   r   r   r!     s    zModelOptionOperation.reduce)N)r$   r%   r&   r!   r'   r   r   )r#   r   r     s   r   c                   sH   e Zd ZdZ fddZdd Zdd Zdd	 Zd
d Zdd Z	  Z
S )AlterModelTablezRename a model's table.c                s   || _ t j| d S )N)tabler    r   )r   r   r   )r#   r   r   r     s    zAlterModelTable.__init__c             C   s   | j | jd}| jjg |fS )N)r   r   )r   r   r#   r&   )r   r9   r   r   r   r:     s
    
zAlterModelTable.deconstructc             C   s.   | j |j|| jf jd< |j|| jdd d S )Nr   T)rs   )r   r   r   r*   rz   )r   r   r>   r   r   r   r?     s    zAlterModelTable.state_forwardsc       	      C   s   |j j|| j}| j|jj|r|j j|| j}|j||jj|jj xLt	|jj
|jj
D ]6\}}|jjjjrZ|j|jj|jjjj|jjjj qZW d S )N)r@   rA   r   rB   rC   rD   r   r0   r   r   r   rw   rr   r   )	r   r   rF   rG   rH   r   r   r   r   r   r   r   rJ     s    

z!AlterModelTable.database_forwardsc             C   s   | j ||||S )N)rJ   )r   r   rF   rG   rH   r   r   r   rL     s    z"AlterModelTable.database_backwardsc             C   s   d| j | jd k	r| jndf S )NzRename table for %s to %sz	(default))r   r   )r   r   r   r   rP     s    zAlterModelTable.describe)r$   r%   r&   rn   r   r:   r?   rJ   rL   rP   r'   r   r   )r#   r   r     s   r   c                   s^   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dZdd Z  ZS )rd   Nc                s.   |rt t|}t| | j| t j| d S )N)r   r   setattrre   r    r   )r   r   rf   )r#   r   r   r     s    z%AlterTogetherOptionOperation.__init__c             C   s   t | | jS )N)rx   re   )r   r   r   r   rf     s    z)AlterTogetherOptionOperation.option_valuec             C   s    d| j | j| ji}| jjg |fS )Nr   )r   re   rf   r#   r&   )r   r9   r   r   r   r:     s
    z(AlterTogetherOptionOperation.deconstructc             C   s4   |j || jf }| j|j| j< |j|| jdd d S )NT)rs   )r   r   rf   r*   re   rz   )r   r   r>   r}   r   r   r   r?      s    z+AlterTogetherOptionOperation.state_forwardsc             C   sl   |j j|| j}| j|jj|rh|j j|| j}t|d| j }||t|j| jt	 t|j| jt	  d S )Nzalter_%s)
r@   rA   r   rB   rC   rD   rx   re   r0   r   )r   r   rF   rG   rH   r   r   Zalter_togetherr   r   r   rJ     s    z.AlterTogetherOptionOperation.database_forwardsc             C   s   | j ||||S )N)rJ   )r   r   rF   rG   rH   r   r   r   rL     s    z/AlterTogetherOptionOperation.database_backwardsc                s,   | j ||o*| j p*t fdd| jD S )Nc             3   s   | ]} |kV  qd S )Nr   )r,   r)   )r   r   r   r.     s    z@AlterTogetherOptionOperation.references_field.<locals>.<genexpr>)r   rf   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))rN   )re   r   lenrf   )r   r   r   r   rP     s    z%AlterTogetherOptionOperation.describe)N)r$   r%   r&   re   r   r   rf   r:   r?   rJ   rL   r   rP   r'   r   r   )r#   r   rd     s   
	rd   c                   s$   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.
    rZ   c                s   t  j|| d S )N)r    r   )r   r   rZ   )r#   r   r   r   '  s    zAlterUniqueTogether.__init__)r$   r%   r&   rn   re   r   r'   r   r   )r#   r   r      s   r   c                   s$   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.
    r[   c                s   t  j|| d S )N)r    r   )r   r   r[   )r#   r   r   r   2  s    zAlterIndexTogether.__init__)r$   r%   r&   rn   re   r   r'   r   r   )r#   r   r   +  s   r   c                   sV   e Zd ZdZdZ fddZdd Zdd Zd	d
 Zdd Z	dddZ
dd Z  ZS )rg   z9Represent a change with the order_with_respect_to option.rV   c                s   || _ t j| d S )N)rV   r    r   )r   r   rV   )r#   r   r   r   ;  s    z AlterOrderWithRespectTo.__init__c             C   s   | j | jd}| jjg |fS )N)r   rV   )r   rV   r#   r&   )r   r9   r   r   r   r:   ?  s
    
z#AlterOrderWithRespectTo.deconstructc             C   s2   |j || jf }| j|jd< |j|| jdd d S )NrV   T)rs   )r   r   rV   r*   rz   )r   r   r>   r}   r   r   r   r?   J  s    z&AlterOrderWithRespectTo.state_forwardsc             C   s   |j j|| j}| j|jj|r|j j|| j}|jjrX|jj rX|j||jj	d n8|jjr|jj r|jj	d}|j
 sd|_|j|| d S )N_orderr   )r@   rA   r   rB   rC   rD   r0   rV   remove_fieldr   has_defaultdefault	add_field)r   r   rF   rG   rH   to_modelrR   rU   r   r   r   rJ   O  s    z)AlterOrderWithRespectTo.database_forwardsc             C   s   | j |||| d S )N)rJ   )r   r   rF   rG   rH   r   r   r   rL   a  s    z*AlterOrderWithRespectTo.database_backwardsNc             C   s    | j ||o| jd kp|| jkS )N)r   rV   )r   r|   r   r   r   r   r   r   d  s    
z(AlterOrderWithRespectTo.references_fieldc             C   s   d| j | jf S )Nz%Set order_with_respect_to on %s to %s)r   rV   )r   r   r   r   rP   m  s    z AlterOrderWithRespectTo.describe)N)r$   r%   r&   rn   re   r   r:   r?   rJ   rL   r   rP   r'   r   r   )r#   r   rg   6  s   
	rg   c                   sb   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
  ZS )rc   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.
    base_manager_namedefault_manager_namedefault_related_nameget_latest_bymanagedorderingpermissionsdefault_permissionsselect_on_saveverbose_nameverbose_name_pluralc                s   || _ t j| d S )N)r*   r    r   )r   r   r*   )r#   r   r   r     s    zAlterModelOptions.__init__c             C   s   | j | jd}| jjg |fS )N)r   r*   )r   r*   r#   r&   )r   r9   r   r   r   r:     s
    
zAlterModelOptions.deconstructc             C   s\   |j || jf }|j| j|_x&| jD ]}|| jkr&|jj|d q&W |j|| jdd d S )NFT)rs   )r   r   r*   ALTER_OPTION_KEYSrj   rz   )r   r   r>   r}   keyr   r   r   r?     s    
z AlterModelOptions.state_forwardsc             C   s   d S )Nr   )r   r   rF   rG   rH   r   r   r   rJ     s    z#AlterModelOptions.database_forwardsc             C   s   d S )Nr   )r   r   rF   rG   rH   r   r   r   rL     s    z$AlterModelOptions.database_backwardsc             C   s
   d| j  S )NzChange Meta options on %s)r   )r   r   r   r   rP     s    zAlterModelOptions.describe)r$   r%   r&   rn   r   r   r:   r?   rJ   rL   rP   r'   r   r   )r#   r   rc   q  s$   rc   c                   sN   e Zd ZdZdgZ fddZdd Zdd Zd	d
 Zdd Z	dd Z
  ZS )AlterModelManagerszAlter the model's managers.r+   c                s   || _ t j| d S )N)r+   r    r   )r   r   r+   )r#   r   r   r     s    zAlterModelManagers.__init__c             C   s   | j j| j| jgi fS )N)r#   r&   r   r+   )r   r   r   r   r:     s    
zAlterModelManagers.deconstructc             C   s2   |j || jf }t| j|_|j|| jdd d S )NT)rs   )r   r   r;   r+   rz   )r   r   r>   r}   r   r   r   r?     s    z!AlterModelManagers.state_forwardsc             C   s   d S )Nr   )r   r   rF   rG   rH   r   r   r   rJ     s    z$AlterModelManagers.database_forwardsc             C   s   d S )Nr   )r   r   rF   rG   rH   r   r   r   rL     s    z%AlterModelManagers.database_backwardsc             C   s
   d| j  S )NzChange managers on %s)r   )r   r   r   r   rP     s    zAlterModelManagers.describe)r$   r%   r&   rn   ro   r   r:   r?   rJ   rL   rP   r'   r   r   )r#   r   r     s   r   c               @   s   e Zd ZdZedd ZdS )IndexOperationindexesc             C   s
   | j j S )N)r|   r   )r   r   r   r   rh     s    zIndexOperation.model_name_lowerN)r$   r%   r&   re   r   rh   r   r   r   r   r     s   r   c               @   s@   e Zd ZdZdd Zdd Zdd Zdd	 Zd
d Z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   r~   )r   r|   r~   r   r   r   r     s    zAddIndex.__init__c             C   sF   |j || jf }|j| j | jj f|j| j< |j|| jdd d S )NT)rs   )r   rh   r*   re   r~   rt   rz   )r   r   r>   r}   r   r   r   r?     s     zAddIndex.state_forwardsc             C   s2   |j j|| j}| j|jj|r.|j|| j d S )N)r@   rA   r|   rB   rC   rD   	add_indexr~   )r   r   rF   rG   rH   rI   r   r   r   rJ     s    zAddIndex.database_forwardsc             C   s2   |j j|| j}| j|jj|r.|j|| j d S )N)r@   rA   r|   rB   rC   rD   remove_indexr~   )r   r   rF   rG   rH   rI   r   r   r   rL     s    zAddIndex.database_backwardsc             C   s   | j | jd}| jjg |fS )N)r|   r~   )r|   r~   r#   r&   )r   r9   r   r   r   r:     s
    
zAddIndex.deconstructc             C   s   d| j jdj| j j| jf S )Nz*Create index %s on field(s) %s of model %sz, )r~   r   joinr)   r|   )r   r   r   r   rP     s    zAddIndex.describeN)
r$   r%   r&   rn   r   r?   rJ   rL   r:   rP   r   r   r   r   r     s   	r   c               @   s@   e Zd ZdZdd Zdd Zdd Zdd	 Zd
d Zdd Z	dS )RemoveIndexzRemove an index from a model.c             C   s   || _ || _d S )N)r|   r   )r   r|   r   r   r   r   r      s    zRemoveIndex.__init__c                sL   |j | jf }|j j } fdd|D |j j< |j| jdd d S )Nc                s   g | ]}|j  j kr|qS r   )r   )r,   idx)r   r   r   rY     s    z.RemoveIndex.state_forwards.<locals>.<listcomp>T)rs   )r   rh   r*   re   rz   )r   r   r>   r}   r   r   )r   r   r?     s    zRemoveIndex.state_forwardsc             C   sL   |j j|| j}| j|jj|rH|j|| jf }|j| j	}|j
|| d S )N)r@   rA   r|   rB   rC   rD   r   rh   get_index_by_namer   r   )r   r   rF   rG   rH   rI   from_model_stater~   r   r   r   rJ   
  s
    zRemoveIndex.database_forwardsc             C   sL   |j j|| j}| j|jj|rH|j|| jf }|j| j	}|j
|| d S )N)r@   rA   r|   rB   rC   rD   r   rh   r   r   r   )r   r   rF   rG   rH   rI   to_model_stater~   r   r   r   rL     s
    zRemoveIndex.database_backwardsc             C   s   | j | jd}| jjg |fS )N)r|   r   )r|   r   r#   r&   )r   r9   r   r   r   r:     s
    
zRemoveIndex.deconstructc             C   s   d| j | jf S )NzRemove index %s from %s)r   r|   )r   r   r   r   rP   #  s    zRemoveIndex.describeN)
r$   r%   r&   rn   r   r?   rJ   rL   r:   rP   r   r   r   r   r     s   r   c               @   s@   e Zd ZdZdd Zdd Zdd Zdd	 Zd
d Zdd Z	dS )AddConstraintconstraintsc             C   s   || _ || _d S )N)r|   
constraint)r   r|   r   r   r   r   r   *  s    zAddConstraint.__init__c             C   sB   |j || jf }|j| j | jf|j| j< |j|| jdd d S )NT)rs   )r   rh   r*   re   r   rz   )r   r   r>   r}   r   r   r   r?   .  s    zAddConstraint.state_forwardsc             C   s2   |j j|| j}| j|jj|r.|j|| j d S )N)r@   rA   r|   rB   rC   rD   add_constraintr   )r   r   rF   rG   rH   rI   r   r   r   rJ   3  s    zAddConstraint.database_forwardsc             C   s2   |j j|| j}| j|jj|r.|j|| j d S )N)r@   rA   r|   rB   rC   rD   remove_constraintr   )r   r   rF   rG   rH   rI   r   r   r   rL   8  s    z AddConstraint.database_backwardsc             C   s   | j jg | j| jdfS )N)r|   r   )r#   r$   r|   r   )r   r   r   r   r:   =  s    zAddConstraint.deconstructc             C   s   d| j j| jf S )Nz Create constraint %s on model %s)r   r   r|   )r   r   r   r   rP   C  s    zAddConstraint.describeN)
r$   r%   r&   re   r   r?   rJ   rL   r:   rP   r   r   r   r   r   '  s   r   c               @   s@   e Zd ZdZdd Zdd Zdd Zdd	 Zd
d Zdd Z	dS )RemoveConstraintr   c             C   s   || _ || _d S )N)r|   r   )r   r|   r   r   r   r   r   J  s    zRemoveConstraint.__init__c                sL   |j | jf }|j j } fdd|D |j j< |j| jdd d S )Nc                s   g | ]}|j  j kr|qS r   )r   )r,   c)r   r   r   rY   Q  s    z3RemoveConstraint.state_forwards.<locals>.<listcomp>T)rs   )r   rh   r*   re   rz   )r   r   r>   r}   r   r   )r   r   r?   N  s    zRemoveConstraint.state_forwardsc             C   sL   |j j|| j}| j|jj|rH|j|| jf }|j| j	}|j
|| d S )N)r@   rA   r|   rB   rC   rD   r   rh   get_constraint_by_namer   r   )r   r   rF   rG   rH   rI   r   r   r   r   r   rJ   T  s
    z"RemoveConstraint.database_forwardsc             C   sL   |j j|| j}| j|jj|rH|j|| jf }|j| j	}|j
|| d S )N)r@   rA   r|   rB   rC   rD   r   rh   r   r   r   )r   r   rF   rG   rH   rI   r   r   r   r   r   rL   [  s
    z#RemoveConstraint.database_backwardsc             C   s   | j jg | j| jdfS )N)r|   r   )r#   r$   r|   r   )r   r   r   r   r:   b  s    zRemoveConstraint.deconstructc             C   s   d| j | jf S )Nz"Remove constraint %s from model %s)r   r|   )r   r   r   r   rP   h  s    zRemoveConstraint.describeN)
r$   r%   r&   re   r   r?   rJ   rL   r:   rP   r   r   r   r   r   G  s   r   N)%	django.dbr   Z$django.db.migrations.operations.baser   Zdjango.db.migrations.stater   django.db.models.optionsr   django.utils.functionalr   r)   r   r	   r
   r   r   utilsr   r   r   r   r(   r`   ra   r   r   rd   r   r   rg   rc   r   r   r   r   r   r   r   r   r   r   <module>   s4   
 J# 28;7.* 