Rearchitected condition processing such that multiple conditions are processed by the database, in bulk. Closes #42.

registrasion/controllers/cart.py

@@ -307,6 +307,8 @@ class CartController(object):
             self._append_errors(errors, ve)
 
         # Validate the discounts
+        # TODO: refactor in terms of available_discounts
+        # why aren't we doing that here?!
         discount_items = commerce.DiscountItem.objects.filter(cart=cart)
         seen_discounts = set()
 

registrasion/controllers/conditions.py

@@ -4,7 +4,12 @@ import operator
 from collections import defaultdict
 from collections import namedtuple
 
+from django.db.models import Case
+from django.db.models import Count
+from django.db.models import F, Q
 from django.db.models import Sum
+from django.db.models import Value
+from django.db.models import When
 from django.utils import timezone
 
 from registrasion.models import commerce
@@ -12,6 +17,7 @@ from registrasion.models import conditions
 from registrasion.models import inventory
 
 
+
 ConditionAndRemainder = namedtuple(
     "ConditionAndRemainder",
     (
@@ -21,16 +27,77 @@ ConditionAndRemainder = namedtuple(
 )
 
 
+_FlagCounter = namedtuple(
+    "_FlagCounter",
+    (
+        "products",
+        "categories",
+    ),
+)
+
+
+_ConditionsCount = namedtuple(
+    "ConditionsCount",
+    (
+        "dif",
+        "eit",
+    ),
+)
+
+
+class FlagCounter(_FlagCounter):
+
+    @classmethod
+    def count(cls):
+        # Get the count of how many conditions should exist per product
+        flagbases = conditions.FlagBase.objects
+
+        types = (
+            conditions.FlagBase.ENABLE_IF_TRUE,
+            conditions.FlagBase.DISABLE_IF_FALSE,
+        )
+        keys = ("eit", "dif")
+        flags = [
+            flagbases.filter(
+                condition=condition_type
+            ).values(
+                'products', 'categories'
+            ).annotate(
+                count=Count('id')
+            )
+            for condition_type in types
+        ]
+
+        cats = defaultdict(lambda: defaultdict(int))
+        prod = defaultdict(lambda: defaultdict(int))
+
+        for key, flagcounts in zip(keys, flags):
+            for row in flagcounts:
+                if row["products"] is not None:
+                    prod[row["products"]][key] = row["count"]
+                if row["categories"] is not None:
+                    cats[row["categories"]][key] = row["count"]
+
+        return cls(products=prod, categories=cats)
+
+    def get(self, product):
+        p = self.products[product.id]
+        c = self.categories[product.category.id]
+        eit = p["eit"] + c["eit"]
+        dif = p["dif"] + c["dif"]
+        return _ConditionsCount(dif=dif, eit=eit)
+
+
 class ConditionController(object):
     ''' Base class for testing conditions that activate Flag
     or Discount objects. '''
 
-    def __init__(self):
+    def __init__(self, condition):
-        pass
+        self.condition = condition
 
     @staticmethod
-    def for_condition(condition):
+    def _controllers():
-        CONTROLLERS = {
+        return {
             conditions.CategoryFlag: CategoryConditionController,
             conditions.IncludedProductDiscount: ProductConditionController,
             conditions.ProductFlag: ProductConditionController,
@@ -42,8 +109,14 @@ class ConditionController(object):
             conditions.VoucherFlag: VoucherConditionController,
         }
 
+    @staticmethod
+    def for_type(cls):
+        return ConditionController._controllers()[cls]
+
+    @staticmethod
+    def for_condition(condition):
         try:
-            return CONTROLLERS[type(condition)](condition)
+            return ConditionController.for_type(type(condition))(condition)
         except KeyError:
             return ConditionController()
 
@@ -91,20 +164,9 @@ class ConditionController(object):
             products = set(products)
             quantities = {}
 
-        # Get the conditions covered by the products themselves
-        prods = (
-            product.flagbase_set.select_subclasses()
-            for product in products
-        )
-        # Get the conditions covered by their categories
-        cats = (
-            category.flagbase_set.select_subclasses()
-            for category in set(product.category for product in products)
-        )
-
         if products:
             # Simplify the query.
-            all_conditions = reduce(operator.or_, itertools.chain(prods, cats))
+            all_conditions = cls._filtered_flags(user, products)
         else:
             all_conditions = []
 
@@ -114,11 +176,15 @@ class ConditionController(object):
         do_enable = defaultdict(lambda: False)
         # (if either sort of condition is present)
 
+        # Count the number of conditions for a product
+        dif_count = defaultdict(int)
+        eit_count = defaultdict(int)
+
         messages = {}
 
         for condition in all_conditions:
             cond = cls.for_condition(condition)
-            remainder = cond.user_quantity_remaining(user)
+            remainder = cond.user_quantity_remaining(user, filtered=True)
 
             # Get all products covered by this condition, and the products
             # from the categories covered by this condition
@@ -149,14 +215,41 @@ class ConditionController(object):
             for product in all_products:
                 if condition.is_disable_if_false:
                     do_not_disable[product] &= met
+                    dif_count[product] += 1
                 else:
                     do_enable[product] |= met
+                    eit_count[product] += 1
 
                 if not met and product not in messages:
                     messages[product] = message
 
+        total_flags = FlagCounter.count()
+
         valid = {}
+
+        # the problem is that now, not every condition falls into
+        # do_not_disable or do_enable '''
+        # You should look into this, chris :)
+
+        for product in products:
+            if quantities:
+                if quantities[product] == 0:
+                    continue
+
+            f = total_flags.get(product)
+            if f.dif > 0 and f.dif != dif_count[product]:
+                do_not_disable[product] = False
+                if product not in messages:
+                    messages[product] = "Some disable-if-false " \
+                                        "conditions were not met"
+            if f.eit > 0 and product not in do_enable:
+                do_enable[product] = False
+                if product not in messages:
+                    messages[product] = "Some enable-if-true " \
+                                        "conditions were not met"
+
         for product in itertools.chain(do_not_disable, do_enable):
+            f = total_flags.get(product)
             if product in do_enable:
                 # If there's an enable-if-true, we need need of those met too.
                 # (do_not_disable will default to true otherwise)
@@ -172,7 +265,71 @@ class ConditionController(object):
 
         return error_fields
 
-    def user_quantity_remaining(self, user):
+    @classmethod
+    def _filtered_flags(cls, user, products):
+        '''
+
+        Returns:
+            Sequence[flagbase]: All flags that passed the filter function.
+
+        '''
+
+        types = list(ConditionController._controllers())
+        flagtypes = [i for i in types if issubclass(i, conditions.FlagBase)]
+
+        # Get all flags for the products and categories.
+        prods = (
+            product.flagbase_set.all()
+            for product in products
+        )
+        cats = (
+            category.flagbase_set.all()
+            for category in set(product.category for product in products)
+        )
+        all_flags = reduce(operator.or_, itertools.chain(prods, cats))
+
+        all_subsets = []
+
+        for flagtype in flagtypes:
+            flags = flagtype.objects.filter(id__in=all_flags)
+            ctrl = ConditionController.for_type(flagtype)
+            flags = ctrl.pre_filter(flags, user)
+            all_subsets.append(flags)
+
+        return itertools.chain(*all_subsets)
+
+    @classmethod
+    def pre_filter(cls, queryset, user):
+        ''' Returns only the flag conditions that might be available for this
+        user. It should hopefully reduce the number of queries that need to be
+        executed to determine if a flag is met.
+
+        If this filtration implements the same query as is_met, then you should
+        be able to implement ``is_met()`` in terms of this.
+
+        Arguments:
+
+            queryset (Queryset[c]): The canditate conditions.
+
+            user (User): The user for whom we're testing these conditions.
+
+        Returns:
+            Queryset[c]: A subset of the conditions that pass the pre-filter
+                test for this user.
+
+        '''
+
+        # Default implementation does NOTHING.
+        return queryset
+
+    def passes_filter(self, user):
+        ''' Returns true if the condition passes the filter '''
+
+        cls = type(self.condition)
+        qs = cls.objects.filter(pk=self.condition.id)
+        return self.condition in self.pre_filter(qs, user)
+
+    def user_quantity_remaining(self, user, filtered=False):
         ''' Returns the number of items covered by this flag condition the
         user can add to the current cart. This default implementation returns
         a big number if is_met() is true, otherwise 0.
@@ -180,26 +337,37 @@ class ConditionController(object):
         Either this method, or is_met() must be overridden in subclasses.
         '''
 
-        return 99999999 if self.is_met(user) else 0
+        return _BIG_QUANTITY if self.is_met(user, filtered) else 0
 
-    def is_met(self, user):
+    def is_met(self, user, filtered=False):
         ''' Returns True if this flag condition is met, otherwise returns
         False.
 
         Either this method, or user_quantity_remaining() must be overridden
         in subclasses.
+
+        Arguments:
+
+            user (User): The user for whom this test must be met.
+
+            filter (bool): If true, this condition was part of a queryset
+                returned by pre_filter() for this user.
+
         '''
-        return self.user_quantity_remaining(user) > 0
+        return self.user_quantity_remaining(user, filtered) > 0
 
 
-class CategoryConditionController(ConditionController):
+class IsMetByFilter(object):
 
-    def __init__(self, condition):
+    def is_met(self, user, filtered=False):
-        self.condition = condition
+        ''' Returns True if this flag condition is met, otherwise returns
+        False. It determines if the condition is met by calling pre_filter
+        with a queryset containing only self.condition. '''
 
-    def is_met(self, user):
+        if filtered:
-        ''' returns True if the user has a product from a category that invokes
+            return True  # Why query again?
-        this condition in one of their carts '''
+
+        return self.passes_filter(user)
 
         carts = commerce.Cart.objects.filter(user=user)
         carts = carts.exclude(status=commerce.Cart.STATUS_RELEASED)
@@ -212,112 +380,176 @@ class CategoryConditionController(ConditionController):
         ).count()
         return products_count > 0
 
+class RemainderSetByFilter(object):
 
-class ProductConditionController(ConditionController):
+    def user_quantity_remaining(self, user, filtered=True):
+        ''' returns 0 if the date range is violated, otherwise, it will return
+        the quantity remaining under the stock limit.
+
+        The filter for this condition must add an annotation called "remainder"
+        in order for this to work.
+        '''
+
+        if filtered:
+            if hasattr(self.condition, "remainder"):
+                return self.condition.remainder
+
+
+
+        # Mark self.condition with a remainder
+        qs = type(self.condition).objects.filter(pk=self.condition.id)
+        qs = self.pre_filter(qs, user)
+
+        if len(qs) > 0:
+            return qs[0].remainder
+        else:
+            return 0
+
+
+class CategoryConditionController(IsMetByFilter, ConditionController):
+
+    @classmethod
+    def pre_filter(self, queryset, user):
+        ''' Returns all of the items from queryset where the user has a
+        product from a category invoking that item's condition in one of their
+        carts. '''
+
+        items = commerce.ProductItem.objects.filter(cart__user=user)
+        items = items.exclude(cart__status=commerce.Cart.STATUS_RELEASED)
+        items = items.select_related("product", "product__category")
+        categories = [item.product.category for item in items]
+
+        return queryset.filter(enabling_category__in=categories)
+
+
+class ProductConditionController(IsMetByFilter, ConditionController):
     ''' Condition tests for ProductFlag and
     IncludedProductDiscount. '''
 
-    def __init__(self, condition):
+    @classmethod
-        self.condition = condition
+    def pre_filter(self, queryset, user):
+        ''' Returns all of the items from queryset where the user has a
+        product invoking that item's condition in one of their carts. '''
 
-    def is_met(self, user):
+        items = commerce.ProductItem.objects.filter(cart__user=user)
-        ''' returns True if the user has a product that invokes this
+        items = items.exclude(cart__status=commerce.Cart.STATUS_RELEASED)
-        condition in one of their carts '''
+        items = items.select_related("product", "product__category")
+        products = [item.product for item in items]
 
-        carts = commerce.Cart.objects.filter(user=user)
+        return queryset.filter(enabling_products__in=products)
-        carts = carts.exclude(status=commerce.Cart.STATUS_RELEASED)
-        products_count = commerce.ProductItem.objects.filter(
-            cart__in=carts,
-            product__in=self.condition.enabling_products.all(),
-        ).count()
-        return products_count > 0
 
 
-class TimeOrStockLimitConditionController(ConditionController):
+class TimeOrStockLimitConditionController(
+        RemainderSetByFilter,
+        ConditionController,
+    ):
     ''' Common condition tests for TimeOrStockLimit Flag and
     Discount.'''
 
-    def __init__(self, ceiling):
+    @classmethod
-        self.ceiling = ceiling
+    def pre_filter(self, queryset, user):
+        ''' Returns all of the items from queryset where the date falls into
+        any specified range, but not yet where the stock limit is not yet
+        reached.'''
 
-    def user_quantity_remaining(self, user):
-        ''' returns 0 if the date range is violated, otherwise, it will return
-        the quantity remaining under the stock limit. '''
-
-        # Test date range
-        if not self._test_date_range():
-            return 0
-
-        return self._get_remaining_stock(user)
-
-    def _test_date_range(self):
         now = timezone.now()
 
-        if self.ceiling.start_time is not None:
+        # Keep items with no start time, or start time not yet met.
-            if now < self.ceiling.start_time:
+        queryset = queryset.filter(Q(start_time=None) | Q(start_time__lte=now))
-                return False
+        queryset = queryset.filter(Q(end_time=None) | Q(end_time__gte=now))
 
-        if self.ceiling.end_time is not None:
+        # Filter out items that have been reserved beyond the limits
-            if now > self.ceiling.end_time:
+        quantity_or_zero = self._calculate_quantities(user)
-                return False
 
-        return True
+        remainder = Case(
+            When(limit=None, then=Value(_BIG_QUANTITY)),
+            default=F("limit") - Sum(quantity_or_zero),
+        )
 
-    def _get_remaining_stock(self, user):
+        queryset = queryset.annotate(remainder=remainder)
-        ''' Returns the stock that remains under this ceiling, excluding the
+        queryset = queryset.filter(remainder__gt=0)
-        user's current cart. '''
 
-        if self.ceiling.limit is None:
+        return queryset
-            return 99999999
 
-        # We care about all reserved carts, but not the user's current cart
+    @classmethod
+    def _relevant_carts(cls, user):
         reserved_carts = commerce.Cart.reserved_carts()
         reserved_carts = reserved_carts.exclude(
             user=user,
             status=commerce.Cart.STATUS_ACTIVE,
         )
-
+        return reserved_carts
-        items = self._items()
-        items = items.filter(cart__in=reserved_carts)
-        count = items.aggregate(Sum("quantity"))["quantity__sum"] or 0
-
-        return self.ceiling.limit - count
 
 
 class TimeOrStockLimitFlagController(
         TimeOrStockLimitConditionController):
 
-    def _items(self):
+    @classmethod
-        category_products = inventory.Product.objects.filter(
+    def _calculate_quantities(cls, user):
-            category__in=self.ceiling.categories.all(),
+        reserved_carts = cls._relevant_carts(user)
-        )
-        products = self.ceiling.products.all() | category_products
 
-        product_items = commerce.ProductItem.objects.filter(
+        # Calculate category lines
-            product__in=products.all(),
+        cat_items = F('categories__product__productitem__product__category')
+        reserved_category_products = (
+            Q(categories=cat_items) &
+            Q(categories__product__productitem__cart__in=reserved_carts)
         )
-        return product_items
+
+        # Calculate product lines
+        reserved_products = (
+            Q(products=F('products__productitem__product')) &
+            Q(products__productitem__cart__in=reserved_carts)
+        )
+
+        category_quantity_in_reserved_carts = When(
+            reserved_category_products,
+            then="categories__product__productitem__quantity",
+        )
+
+        product_quantity_in_reserved_carts = When(
+            reserved_products,
+            then="products__productitem__quantity",
+        )
+
+        quantity_or_zero = Case(
+            category_quantity_in_reserved_carts,
+            product_quantity_in_reserved_carts,
+            default=Value(0),
+        )
+
+        return quantity_or_zero
 
 
 class TimeOrStockLimitDiscountController(TimeOrStockLimitConditionController):
 
-    def _items(self):
+    @classmethod
-        discount_items = commerce.DiscountItem.objects.filter(
+    def _calculate_quantities(cls, user):
-            discount=self.ceiling,
+        reserved_carts = cls._relevant_carts(user)
+
+        quantity_in_reserved_carts = When(
+            discountitem__cart__in=reserved_carts,
+            then="discountitem__quantity"
         )
-        return discount_items
+
+        quantity_or_zero = Case(
+            quantity_in_reserved_carts,
+            default=Value(0)
+        )
+
+        return quantity_or_zero
 
 
-class VoucherConditionController(ConditionController):
+class VoucherConditionController(IsMetByFilter, ConditionController):
     ''' Condition test for VoucherFlag and VoucherDiscount.'''
 
-    def __init__(self, condition):
+    @classmethod
-        self.condition = condition
+    def pre_filter(self, queryset, user):
+        ''' Returns all of the items from queryset where the user has entered
+        a voucher that invokes that item's condition in one of their carts. '''
 
-    def is_met(self, user):
+        carts = commerce.Cart.objects.filter(
-        ''' returns True if the user has the given voucher attached. '''
-        carts_count = commerce.Cart.objects.filter(
             user=user,
-            vouchers=self.condition.voucher,
+        )
-        ).count()
+        vouchers = [cart.vouchers.all() for cart in carts]
-        return carts_count > 0
+
+        return queryset.filter(voucher__in=itertools.chain(*vouchers))

registrasion/controllers/discount.py

@@ -4,7 +4,11 @@ from conditions import ConditionController
 from registrasion.models import commerce
 from registrasion.models import conditions
 
+from django.db.models import Case
+from django.db.models import Q
 from django.db.models import Sum
+from django.db.models import Value
+from django.db.models import When
 
 
 class DiscountAndQuantity(object):
@@ -43,6 +47,62 @@ def available_discounts(user, categories, products):
     and products. The discounts also list the available quantity for this user,
     not including products that are pending purchase. '''
 
+
+
+    filtered_clauses = _filtered_discounts(user, categories, products)
+
+    discounts = []
+
+    # Markers so that we don't need to evaluate given conditions more than once
+    accepted_discounts = set()
+    failed_discounts = set()
+
+    for clause in filtered_clauses:
+        discount = clause.discount
+        cond = ConditionController.for_condition(discount)
+
+        past_use_count = discount.past_use_count
+
+        # TODO: add test case --
+        # discount covers 2x prod_1 and 1x prod_2
+        # add 1x prod_2
+        # add 1x prod_1
+        # checkout
+        # discount should be available for prod_1
+
+        if past_use_count >= clause.quantity:
+            # This clause has exceeded its use count
+            pass
+        elif discount not in failed_discounts:
+            # This clause is still available
+            is_accepted = discount in accepted_discounts
+            if is_accepted or cond.is_met(user, filtered=True):
+                # This clause is valid for this user
+                discounts.append(DiscountAndQuantity(
+                    discount=discount,
+                    clause=clause,
+                    quantity=clause.quantity - past_use_count,
+                ))
+                accepted_discounts.add(discount)
+            else:
+                # This clause is not valid for this user
+                failed_discounts.add(discount)
+    return discounts
+
+
+def _filtered_discounts(user, categories, products):
+    '''
+
+    Returns:
+        Sequence[discountbase]: All discounts that passed the filter function.
+
+    '''
+
+    types = list(ConditionController._controllers())
+    discounttypes = [
+        i for i in types if issubclass(i, conditions.DiscountBase)
+    ]
+
     # discounts that match provided categories
     category_discounts = conditions.DiscountForCategory.objects.filter(
         category__in=categories
@@ -67,51 +127,56 @@ def available_discounts(user, categories, products):
         "category",
     )
 
+    valid_discounts = conditions.DiscountBase.objects.filter(
+        Q(discountforproduct__in=product_discounts) |
+        Q(discountforcategory__in=all_category_discounts)
+    )
+
+    all_subsets = []
+
+    for discounttype in discounttypes:
+        discounts = discounttype.objects.filter(id__in=valid_discounts)
+        ctrl = ConditionController.for_type(discounttype)
+        discounts = ctrl.pre_filter(discounts, user)
+        discounts = _annotate_with_past_uses(discounts, user)
+        all_subsets.append(discounts)
+
+    filtered_discounts = list(itertools.chain(*all_subsets))
+
+    # Map from discount key to itself (contains annotations added by filter)
+    from_filter = dict((i.id, i) for i in filtered_discounts)
+
     # The set of all potential discounts
-    potential_discounts = set(itertools.chain(
+    discount_clauses = set(itertools.chain(
-        product_discounts,
+        product_discounts.filter(discount__in=filtered_discounts),
-        all_category_discounts,
+        all_category_discounts.filter(discount__in=filtered_discounts),
     ))
 
-    discounts = []
+    # Replace discounts with the filtered ones
+    # These are the correct subclasses (saves query later on), and have
+    # correct annotations from filters if necessary.
+    for clause in discount_clauses:
+        clause.discount = from_filter[clause.discount.id]
 
-    # Markers so that we don't need to evaluate given conditions more than once
+    return discount_clauses
-    accepted_discounts = set()
-    failed_discounts = set()
 
-    for discount in potential_discounts:
-        real_discount = conditions.DiscountBase.objects.get_subclass(
-            pk=discount.discount.pk,
-        )
-        cond = ConditionController.for_condition(real_discount)
 
-        # Count the past uses of the given discount item.
+def _annotate_with_past_uses(queryset, user):
-        # If this user has exceeded the limit for the clause, this clause
+    ''' Annotates the queryset with a usage count for that discount by the
-        # is not available any more.
+    given user. '''
-        past_uses = commerce.DiscountItem.objects.filter(
-            cart__user=user,
-            cart__status=commerce.Cart.STATUS_PAID,  # Only past carts count
-            discount=real_discount,
-        )
-        agg = past_uses.aggregate(Sum("quantity"))
-        past_use_count = agg["quantity__sum"]
-        if past_use_count is None:
-            past_use_count = 0
 
-        if past_use_count >= discount.quantity:
+    past_use_quantity = When(
-            # This clause has exceeded its use count
+        (
-            pass
+            Q(discountitem__cart__user=user) &
-        elif real_discount not in failed_discounts:
+            Q(discountitem__cart__status=commerce.Cart.STATUS_PAID)
-            # This clause is still available
+        ),
-            if real_discount in accepted_discounts or cond.is_met(user):
+        then="discountitem__quantity",
-                # This clause is valid for this user
+    )
-                discounts.append(DiscountAndQuantity(
+
-                    discount=real_discount,
+    past_use_quantity_or_zero = Case(
-                    clause=discount,
+        past_use_quantity,
-                    quantity=discount.quantity - past_use_count,
+        default=Value(0),
-                ))
+    )
-                accepted_discounts.add(real_discount)
+
-            else:
+    queryset = queryset.annotate(past_use_count=Sum(past_use_quantity_or_zero))
-                # This clause is not valid for this user
+    return queryset
-                failed_discounts.add(real_discount)
-    return discounts

registrasion/tests/test_ceilings.py

@@ -6,6 +6,8 @@ from django.core.exceptions import ValidationError
 from controller_helpers import TestingCartController
 from test_cart import RegistrationCartTestCase
 
+from registrasion.controllers.discount import available_discounts
+from registrasion.controllers.product import ProductController
 from registrasion.models import commerce
 from registrasion.models import conditions
 
@@ -135,6 +137,39 @@ class CeilingsTestCases(RegistrationCartTestCase):
         with self.assertRaises(ValidationError):
             first_cart.validate_cart()
 
+    def test_discount_ceiling_aggregates_products(self):
+        # Create two carts, add 1xprod_1 to each. Ceiling should disappear
+        # after second.
+        self.make_discount_ceiling(
+            "Multi-product limit discount ceiling",
+            limit=2,
+        )
+        for i in xrange(2):
+            cart = TestingCartController.for_user(self.USER_1)
+            cart.add_to_cart(self.PROD_1, 1)
+            cart.next_cart()
+
+        discounts = available_discounts(self.USER_1, [], [self.PROD_1])
+
+        self.assertEqual(0, len(discounts))
+
+    def test_flag_ceiling_aggregates_products(self):
+        # Create two carts, add 1xprod_1 to each. Ceiling should disappear
+        # after second.
+        self.make_ceiling("Multi-product limit ceiling", limit=2)
+
+        for i in xrange(2):
+            cart = TestingCartController.for_user(self.USER_1)
+            cart.add_to_cart(self.PROD_1, 1)
+            cart.next_cart()
+
+        products = ProductController.available_products(
+            self.USER_1,
+            products=[self.PROD_1],
+        )
+
+        self.assertEqual(0, len(products))
+
     def test_items_released_from_ceiling_by_refund(self):
         self.make_ceiling("Limit ceiling", limit=1)
 

setup.cfg

@@ -1,2 +1,2 @@
 [flake8]
-exclude = registrasion/migrations/*, build/*, docs/*
+exclude = registrasion/migrations/*, build/*, docs/*, dist/*