Sistema de Apoio ao Processo Legislativo
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from django.core.paginator import EmptyPage
from rest_framework import pagination
from rest_framework.response import Response
class StandardPagination(pagination.PageNumberPagination):
page_size = 10
page_size_query_param = 'page_size'
max_page_size = 100
def paginate_queryset(self, queryset, request, view=None):
if request.query_params.get('get_all', '').lower() == 'true':
return None
return super().paginate_queryset(queryset, request, view=view)
def get_paginated_response_schema(self, schema):
r = {
'type': 'object',
'properties': {
'pagination': {
'type': 'object',
'properties': {
'links': {
'type': 'object',
'properties': {
'next': {
'type': 'string',
'nullable': True,
'format': 'uri',
'example': 'http://api.example.org/accounts/?{page_query_param}=4'.format(
page_query_param=self.page_query_param)
},
'previous': {
'type': 'string',
'nullable': True,
'format': 'uri',
'example': 'http://api.example.org/accounts/?{page_query_param}=2'.format(
page_query_param=self.page_query_param)
},
}
},
'previous_page': {
'type': 'integer',
'example': 123,
},
'next_page': {
'type': 'integer',
'example': 123,
},
'start_index': {
'type': 'integer',
'example': 123,
},
'end_index': {
'type': 'integer',
'example': 123,
},
'total_entries': {
'type': 'integer',
'example': 123,
},
'total_pages': {
'type': 'integer',
'example': 123,
},
'page': {
'type': 'integer',
'example': 123,
},
}
},
'results': schema,
},
}
return r
def get_paginated_response(self, data):
try:
previous_page_number = self.page.previous_page_number()
except EmptyPage:
previous_page_number = None
try:
next_page_number = self.page.next_page_number()
except EmptyPage:
next_page_number = None
return Response({
'pagination': {
'links': {
'next': self.get_next_link(),
'previous': self.get_previous_link(),
},
'previous_page': previous_page_number,
'next_page': next_page_number,
'start_index': self.page.start_index(),
'end_index': self.page.end_index(),
'total_entries': self.page.paginator.count,
'total_pages': self.page.paginator.num_pages,
'page': self.page.number,
},
'results': data,
})