@ -1,5 +1,19 @@
from braces . views import FormMessagesMixin
from crispy_forms . helper import FormHelper
from crispy_forms_foundation . layout import Column , Fieldset , Row
from crispy_forms_foundation . layout . base import Layout , Div , HTML
from crispy_forms_foundation . layout . buttons import Submit
from django import forms
from django . conf . urls import url
from django . core . urlresolvers import reverse_lazy , reverse
from django . utils . functional import cached_property
from django . utils . translation import ugettext_lazy as _
from django . views . generic . detail import DetailView
from django . views . generic . edit import CreateView , UpdateView , DeleteView
from django . views . generic . list import ListView
NO_ENTRIES_MSG = _ ( ' Não existem registros ' )
def to_column ( name_span ) :
@ -88,3 +102,224 @@ def make_pagination(index, num_pages):
None , num_pages - 1 , num_pages ]
head = from_to ( 1 , PAGINATION_LENGTH - len ( tail ) - 1 )
return head + [ None ] + tail
def get_field_display ( obj , fieldname ) :
field = obj . _meta . get_field ( fieldname )
verbose_name = str ( field . verbose_name )
if field . choices :
value = getattr ( obj , ' get_ %s _display ' % fieldname ) ( )
else :
value = getattr ( obj , fieldname )
if value is None :
display = ' '
elif ' date ' in str ( type ( value ) ) :
display = value . strftime ( " %d / % m/ % Y " )
elif ' bool ' in str ( type ( value ) ) :
display = ' Sim ' if value else ' Não '
else :
display = str ( value )
return verbose_name , display
class FormLayout ( Layout ) :
def __init__ ( self , * fields ) :
buttons = Div (
HTML ( ' <a href= " {{ view.cancel_url }} " '
' class= " button radius alert " > %s </a> ' % _ ( ' Cancelar ' ) ) ,
Submit ( ' submit ' , _ ( ' Enviar ' ) ,
css_class = ' button radius success right ' ) ,
css_class = ' radius clearfix '
)
_fields = list ( to_fieldsets ( fields ) ) + \
[ Row ( Column ( buttons , css_class = ' clearfix ' ) ) ]
super ( FormLayout , self ) . __init__ ( * _fields )
class Crud ( object ) :
pass
def build_crud ( model , help_path , layout ) :
crud = Crud ( )
crud . model = model
crud . help_path = help_path
crud . namespace = model . _meta . model_name
class CrispyForm ( forms . ModelForm ) :
class Meta :
model = crud . model
exclude = [ ]
def __init__ ( self , * args , * * kwargs ) :
super ( CrispyForm , self ) . __init__ ( * args , * * kwargs )
self . helper = FormHelper ( )
self . helper . layout = FormLayout ( * layout )
crud . model_form = CrispyForm
def in_namespace ( url_name ) :
return ' %s : %s ' % ( crud . namespace , url_name )
def make_form_invalid_message ( msg ) :
return ' %s %s ' % ( _ ( ' Formulário inválido. ' ) , msg )
class BaseMixin ( object ) :
model = crud . model
verbose_name = crud . model . _meta . verbose_name
verbose_name_plural = crud . model . _meta . verbose_name_plural
list_url = reverse_lazy ( in_namespace ( ' list ' ) )
create_url = reverse_lazy ( in_namespace ( ' create ' ) )
help_path = crud . help_path # FIXME
def get_url_for_this_object ( self , url_name ) :
return reverse ( in_namespace ( url_name ) , args = ( self . object . id , ) )
@property
def detail_url ( self ) :
return self . get_url_for_this_object ( ' detail ' )
@property
def update_url ( self ) :
return self . get_url_for_this_object ( ' update ' )
@property
def delete_url ( self ) :
return self . get_url_for_this_object ( ' delete ' )
def get_template_names ( self ) :
names = super ( BaseMixin , self ) . get_template_names ( )
names . append ( " crud/ %s .html " %
self . template_name_suffix . lstrip ( ' _ ' ) )
return names
class CrudListView ( BaseMixin , ListView ) :
title = BaseMixin . verbose_name_plural
paginate_by = 10
no_entries_msg = NO_ENTRIES_MSG
@cached_property
def field_names ( self ) :
''' The list of field names to display on table
This base implementation returns the field names
in the first fieldset of the layout .
'''
rows = layout [ 0 ] [ 1 : ]
return [ fieldname for row in rows for fieldname , __ in row ]
def get_rows ( self , object_list ) :
return [ [ ( get_field_display ( obj , name ) [ 1 ] ,
obj . pk if i == 0 else None )
for i , name in enumerate ( self . field_names ) ]
for obj in object_list
]
def get_context_data ( self , * * kwargs ) :
context = super ( CrudListView , self ) . get_context_data ( * * kwargs )
paginator = context [ ' paginator ' ]
page_obj = context [ ' page_obj ' ]
context [ ' page_range ' ] = make_pagination (
page_obj . number , paginator . num_pages )
object_list = context [ ' object_list ' ]
context [ ' headers ' ] = [
self . model . _meta . get_field ( fieldname ) . verbose_name
for fieldname in self . field_names ]
context [ ' rows ' ] = self . get_rows ( object_list )
context [ ' NO_ENTRIES_MSG ' ] = NO_ENTRIES_MSG
return context
class CrudCreateView ( BaseMixin , FormMessagesMixin , CreateView ) :
form_class = crud . model_form
title = _ ( ' Adicionar %(verbose_name)s ' ) % {
' verbose_name ' : BaseMixin . verbose_name }
form_valid_message = _ ( ' Registro criado com sucesso! ' )
form_invalid_message = make_form_invalid_message (
_ ( ' O registro não foi criado. ' ) )
cancel_url = BaseMixin . list_url
def form_invalid ( self , form ) :
"""
If the form is invalid , re - render the context data with the
data - filled form and errors .
"""
print ( form . errors )
return self . render_to_response ( self . get_context_data ( form = form ) )
def get_success_url ( self ) :
return self . detail_url
class CrudDetailView ( BaseMixin , DetailView ) :
@property
def title ( self ) :
return self . get_object ( )
def get_column ( self , fieldname , span ) :
obj = self . get_object ( )
verbose_name , text = get_field_display ( obj , fieldname )
return {
' id ' : fieldname ,
' span ' : span ,
' verbose_name ' : verbose_name ,
' text ' : text ,
}
@property
def fieldsets ( self ) :
return [
{ ' legend ' : legend ,
' rows ' : [ [ self . get_column ( fieldname , span )
for fieldname , span in row ]
for row in rows ]
} for legend , * rows in layout ]
class CrudUpdateView ( BaseMixin , FormMessagesMixin , UpdateView ) :
form_class = crud . model_form
form_valid_message = _ ( ' Registro alterado com sucesso! ' )
form_invalid_message = make_form_invalid_message (
_ ( ' Suas alterações não foram salvas. ' ) )
@property
def title ( self ) :
return self . get_object ( )
def get_success_url ( self ) :
return self . detail_url
def cancel_url ( self ) :
return self . detail_url
class CrudDeleteView ( BaseMixin , FormMessagesMixin , DeleteView ) :
form_valid_message = _ ( ' Registro excluído com sucesso! ' )
form_invalid_message = make_form_invalid_message (
_ ( ' O registro não foi excluído. ' ) )
def get_success_url ( self ) :
return self . list_url
crud . CrudListView = CrudListView
crud . CrudCreateView = CrudCreateView
crud . CrudDetailView = CrudDetailView
crud . CrudUpdateView = CrudUpdateView
crud . CrudDeleteView = CrudDeleteView
# XXX transform into a property of Crud to enable override
crud . urlpatterns = [
url ( r ' ^$ ' , CrudListView . as_view ( ) , name = ' list ' ) ,
url ( r ' ^create$ ' , CrudCreateView . as_view ( ) , name = ' create ' ) ,
url ( r ' ^(?P<pk> \ d+)$ ' , CrudDetailView . as_view ( ) , name = ' detail ' ) ,
url ( r ' ^(?P<pk> \ d+)/edit$ ' ,
CrudUpdateView . as_view ( ) , name = ' update ' ) ,
url ( r ' ^(?P<pk> \ d+)/delete$ ' ,
CrudDeleteView . as_view ( ) , name = ' delete ' ) ,
]
crud . urls = crud . urlpatterns , crud . namespace , crud . namespace
return crud
LeandroRoberto
9 years ago
