211 lines
10 KiB
Python
211 lines
10 KiB
Python
from cookbook.models import (Food, FoodProperty, Property, PropertyType, Supermarket,
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SupermarketCategory, SupermarketCategoryRelation, Unit, UnitConversion)
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class OpenDataImporter:
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request = None
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data = {}
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slug_id_cache = {}
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update_existing = False
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use_metric = True
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def __init__(self, request, data, update_existing=False, use_metric=True):
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self.request = request
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self.data = data
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self.update_existing = update_existing
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self.use_metric = use_metric
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def _update_slug_cache(self, object_class, datatype):
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self.slug_id_cache[datatype] = dict(object_class.objects.filter(space=self.request.space, open_data_slug__isnull=False).values_list('open_data_slug', 'id', ))
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def import_units(self):
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datatype = 'unit'
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insert_list = []
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for u in list(self.data[datatype].keys()):
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insert_list.append(Unit(
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name=self.data[datatype][u]['name'],
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plural_name=self.data[datatype][u]['plural_name'],
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base_unit=self.data[datatype][u]['base_unit'] if self.data[datatype][u]['base_unit'] != '' else None,
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open_data_slug=u,
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space=self.request.space
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))
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if self.update_existing:
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return Unit.objects.bulk_create(insert_list, update_conflicts=True, update_fields=(
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'name', 'plural_name', 'base_unit', 'open_data_slug'), unique_fields=('space', 'name',))
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else:
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return Unit.objects.bulk_create(insert_list, update_conflicts=True, update_fields=('open_data_slug',), unique_fields=('space', 'name',))
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def import_category(self):
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datatype = 'category'
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insert_list = []
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for k in list(self.data[datatype].keys()):
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insert_list.append(SupermarketCategory(
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name=self.data[datatype][k]['name'],
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open_data_slug=k,
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space=self.request.space
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))
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return SupermarketCategory.objects.bulk_create(insert_list, update_conflicts=True, update_fields=('open_data_slug',), unique_fields=('space', 'name',))
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def import_property(self):
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datatype = 'property'
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insert_list = []
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for k in list(self.data[datatype].keys()):
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insert_list.append(PropertyType(
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name=self.data[datatype][k]['name'],
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unit=self.data[datatype][k]['unit'],
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open_data_slug=k,
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space=self.request.space
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))
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return PropertyType.objects.bulk_create(insert_list, update_conflicts=True, update_fields=('open_data_slug',), unique_fields=('space', 'name',))
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def import_supermarket(self):
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datatype = 'store'
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self._update_slug_cache(SupermarketCategory, 'category')
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insert_list = []
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for k in list(self.data[datatype].keys()):
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insert_list.append(Supermarket(
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name=self.data[datatype][k]['name'],
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open_data_slug=k,
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space=self.request.space
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))
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# always add open data slug if matching supermarket is found, otherwise relation might fail
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supermarkets = Supermarket.objects.bulk_create(insert_list, unique_fields=('space', 'name',), update_conflicts=True, update_fields=('open_data_slug',))
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self._update_slug_cache(Supermarket, 'store')
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insert_list = []
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for k in list(self.data[datatype].keys()):
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relations = []
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order = 0
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for c in self.data[datatype][k]['categories']:
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relations.append(
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SupermarketCategoryRelation(
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supermarket_id=self.slug_id_cache[datatype][k],
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category_id=self.slug_id_cache['category'][c],
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order=order,
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)
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)
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order += 1
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SupermarketCategoryRelation.objects.bulk_create(relations, ignore_conflicts=True, unique_fields=('supermarket', 'category',))
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return supermarkets
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def import_food(self):
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identifier_list = []
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datatype = 'food'
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for k in list(self.data[datatype].keys()):
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identifier_list.append(self.data[datatype][k]['name'])
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identifier_list.append(self.data[datatype][k]['plural_name'])
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existing_objects_flat = []
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existing_objects = {}
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for f in Food.objects.filter(space=self.request.space).filter(name__in=identifier_list).values_list('id', 'name', 'plural_name'):
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existing_objects_flat.append(f[1])
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existing_objects_flat.append(f[2])
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existing_objects[f[1]] = f
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existing_objects[f[2]] = f
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self._update_slug_cache(Unit, 'unit')
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self._update_slug_cache(PropertyType, 'property')
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insert_list = []
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insert_list_flat = []
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update_list = []
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update_field_list = []
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for k in list(self.data[datatype].keys()):
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if not (self.data[datatype][k]['name'] in existing_objects_flat or self.data[datatype][k]['plural_name'] in existing_objects_flat):
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if not (self.data[datatype][k]['name'] in insert_list_flat or self.data[datatype][k]['plural_name'] in insert_list_flat):
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insert_list.append({'data': {
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'name': self.data[datatype][k]['name'],
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'plural_name': self.data[datatype][k]['plural_name'] if self.data[datatype][k]['plural_name'] != '' else None,
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'supermarket_category_id': self.slug_id_cache['category'][self.data[datatype][k]['store_category']],
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'fdc_id': self.data[datatype][k]['fdc_id'] if self.data[datatype][k]['fdc_id'] != '' else None,
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'open_data_slug': k,
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'space': self.request.space.id,
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}})
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# build a fake second flat array to prevent duplicate foods from being inserted.
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# trying to insert a duplicate would throw a db error :(
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insert_list_flat.append(self.data[datatype][k]['name'])
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insert_list_flat.append(self.data[datatype][k]['plural_name'])
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else:
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if self.data[datatype][k]['name'] in existing_objects:
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existing_food_id = existing_objects[self.data[datatype][k]['name']][0]
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else:
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existing_food_id = existing_objects[self.data[datatype][k]['plural_name']][0]
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if self.update_existing:
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update_field_list = ['name', 'plural_name', 'preferred_unit_id', 'preferred_shopping_unit_id', 'supermarket_category_id', 'fdc_id', 'open_data_slug', ]
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update_list.append(Food(
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id=existing_food_id,
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name=self.data[datatype][k]['name'],
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plural_name=self.data[datatype][k]['plural_name'] if self.data[datatype][k]['plural_name'] != '' else None,
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supermarket_category_id=self.slug_id_cache['category'][self.data[datatype][k]['store_category']],
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fdc_id=self.data[datatype][k]['fdc_id'] if self.data[datatype][k]['fdc_id'] != '' else None,
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open_data_slug=k,
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))
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else:
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update_field_list = ['open_data_slug', ]
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update_list.append(Food(id=existing_food_id, open_data_slug=k, ))
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Food.load_bulk(insert_list, None)
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if len(update_list) > 0:
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Food.objects.bulk_update(update_list, update_field_list)
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self._update_slug_cache(Food, 'food')
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food_property_list = []
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# alias_list = []
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for k in list(self.data[datatype].keys()):
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for fp in self.data[datatype][k]['properties']['type_values']:
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# try catch here because somettimes key "k" is not set for he food cache
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try:
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food_property_list.append(Property(
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property_type_id=self.slug_id_cache['property'][fp['property_type']],
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property_amount=fp['property_value'],
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import_food_id=self.slug_id_cache['food'][k],
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space=self.request.space,
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))
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except KeyError:
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print(str(k) + ' is not in self.slug_id_cache["food"]')
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Property.objects.bulk_create(food_property_list, ignore_conflicts=True, unique_fields=('space', 'import_food_id', 'property_type',))
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property_food_relation_list = []
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for p in Property.objects.filter(space=self.request.space, import_food_id__isnull=False).values_list('import_food_id', 'id', ):
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property_food_relation_list.append(Food.properties.through(food_id=p[0], property_id=p[1]))
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FoodProperty.objects.bulk_create(property_food_relation_list, ignore_conflicts=True, unique_fields=('food_id', 'property_id',))
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return insert_list + update_list
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def import_conversion(self):
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datatype = 'conversion'
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insert_list = []
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for k in list(self.data[datatype].keys()):
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# try catch here because sometimes key "k" is not set for he food cache
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try:
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insert_list.append(UnitConversion(
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base_amount=self.data[datatype][k]['base_amount'],
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base_unit_id=self.slug_id_cache['unit'][self.data[datatype][k]['base_unit']],
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converted_amount=self.data[datatype][k]['converted_amount'],
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converted_unit_id=self.slug_id_cache['unit'][self.data[datatype][k]['converted_unit']],
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food_id=self.slug_id_cache['food'][self.data[datatype][k]['food']],
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open_data_slug=k,
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space=self.request.space,
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created_by=self.request.user,
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))
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except KeyError:
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print(str(k) + ' is not in self.slug_id_cache["food"]')
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return UnitConversion.objects.bulk_create(insert_list, ignore_conflicts=True, unique_fields=('space', 'base_unit', 'converted_unit', 'food', 'open_data_slug'))
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