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check complex prefixes in groups, refactor limit queries, finish docstrings, refactors and cleanup in long methods

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This commit is contained in:
collerek
2021-03-07 12:50:40 +01:00
parent eeabb60200
commit 79ad69e355
12 changed files with 468 additions and 136 deletions
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53
ormar/models/helpers/sqlalchemy.py
View File

@ -150,19 +150,68 @@ def sqlalchemy_columns_from_model_fields(
"Integer primary key named `id` created."
)
validate_related_names_in_relations(model_fields, new_model)
return _process_fields(model_fields=model_fields, new_model=new_model)
def _process_fields(
model_fields: Dict, new_model: Type["Model"]
) -> Tuple[Optional[str], List[sqlalchemy.Column]]:
"""
Helper method.
Populates pkname and columns.
Trigger validation of primary_key - only one and required pk can be set,
cannot be pydantic_only.
Append fields to columns if it's not pydantic_only,
virtual ForeignKey or ManyToMany field.
Sets `owner` on each model_field as reference to newly created Model.
:raises ModelDefinitionError: if validation of related_names fail,
or pkname validation fails.
:param model_fields: dictionary of declared ormar model fields
:type model_fields: Dict[str, ormar.Field]
:param new_model:
:type new_model: Model class
:return: pkname, list of sqlalchemy columns
:rtype: Tuple[Optional[str], List[sqlalchemy.Column]]
"""
columns = []
pkname = None
for field_name, field in model_fields.items():
field.owner = new_model
if field.is_multi and not field.through:
if _is_through_model_not_set(field):
field.create_default_through_model()
if field.primary_key:
pkname = check_pk_column_validity(field_name, field, pkname)
if not field.pydantic_only and not field.virtual and not field.is_multi:
if _is_db_field(field):
columns.append(field.get_column(field.get_alias()))
return pkname, columns
def _is_through_model_not_set(field: Type["BaseField"]) -> bool:
"""
Alias to if check that verifies if through model was created.
:param field: field to check
:type field: Type["BaseField"]
:return: result of the check
:rtype: bool
"""
return field.is_multi and not field.through
def _is_db_field(field: Type["BaseField"]) -> bool:
"""
Alias to if check that verifies if field should be included in database.
:param field: field to check
:type field: Type["BaseField"]
:return: result of the check
:rtype: bool
"""
return not field.pydantic_only and not field.virtual and not field.is_multi
def populate_meta_tablename_columns_and_pk(
name: str, new_model: Type["Model"]
) -> Type["Model"]:

41
ormar/models/mixins/relation_mixin.py
View File

@ -129,7 +129,7 @@ class RelationMixin:
return related_names
@classmethod
def _iterate_related_models(
def _iterate_related_models( # noqa: CCR001
cls,
visited: Set[str] = None,
source_visited: Set[str] = None,
@ -149,14 +149,12 @@ class RelationMixin:
:return: list of relation strings to be passed to select_related
:rtype: List[str]
"""
source_visited = source_visited or set()
if not source_model:
source_visited = cls._populate_source_model_prefixes()
source_visited = source_visited or cls._populate_source_model_prefixes()
relations = cls.extract_related_names()
processed_relations = []
for relation in relations:
target_model = cls.Meta.model_fields[relation].to
if source_model and target_model == source_model:
if cls._is_reverse_side_of_same_relation(source_model, target_model):
continue
if target_model not in source_visited or not source_model:
deep_relations = target_model._iterate_related_models(
@ -168,6 +166,39 @@ class RelationMixin:
processed_relations.extend(deep_relations)
else:
processed_relations.append(relation)
return cls._get_final_relations(processed_relations, source_relation)
@staticmethod
def _is_reverse_side_of_same_relation(
source_model: Optional[Union[Type["Model"], Type["RelationMixin"]]],
target_model: Type["Model"],
) -> bool:
"""
Alias to check if source model is the same as target
:param source_model: source model - relation comes from it
:type source_model: Type["Model"]
:param target_model: target model - relation leads to it
:type target_model: Type["Model"]
:return: result of the check
:rtype: bool
"""
return bool(source_model and target_model == source_model)
@staticmethod
def _get_final_relations(
processed_relations: List, source_relation: Optional[str]
) -> List[str]:
"""
Helper method to prefix nested relation strings with current source relation
:param processed_relations: list of already processed relation str
:type processed_relations: List[str]
:param source_relation: name of the current relation
:type source_relation: str
:return: list of relation strings to be passed to select_related
:rtype: List[str]
"""
if processed_relations:
final_relations = [
f"{source_relation + '__' if source_relation else ''}{relation}"

145
ormar/models/model_row.py
View File

@ -4,7 +4,9 @@ from typing import (
List,
Optional,
TYPE_CHECKING,
Tuple,
Type,
Union,
cast,
)
@ -78,21 +80,12 @@ class ModelRow(NewBaseModel):
related_models = group_related_list(select_related)
if related_field:
if related_field.is_multi:
previous_model = related_field.through
else:
previous_model = related_field.owner
table_prefix = cls.Meta.alias_manager.resolve_relation_alias(
from_model=previous_model, relation_name=related_field.name
)
if not table_prefix or table_prefix in used_prefixes:
manager = cls.Meta.alias_manager
table_prefix = manager.resolve_relation_alias_after_complex(
table_prefix = cls._process_table_prefix(
source_model=source_model,
relation_str=current_relation_str,
relation_field=related_field,
current_relation_str=current_relation_str,
related_field=related_field,
used_prefixes=used_prefixes,
)
used_prefixes.append(table_prefix)
item = cls._populate_nested_models_from_row(
item=item,
@ -118,6 +111,44 @@ class ModelRow(NewBaseModel):
instance.set_save_status(True)
return instance
@classmethod
def _process_table_prefix(
cls,
source_model: Type["Model"],
current_relation_str: str,
related_field: Type["ForeignKeyField"],
used_prefixes: List[str],
) -> str:
"""
:param source_model: model on which relation was defined
:type source_model: Type[Model]
:param current_relation_str: current relation string
:type current_relation_str: str
:param related_field: field with relation declaration
:type related_field: Type["ForeignKeyField"]
:param used_prefixes: list of already extracted prefixes
:type used_prefixes: List[str]
:return: table_prefix to use
:rtype: str
"""
if related_field.is_multi:
previous_model = related_field.through
else:
previous_model = related_field.owner
table_prefix = cls.Meta.alias_manager.resolve_relation_alias(
from_model=previous_model, relation_name=related_field.name
)
if not table_prefix or table_prefix in used_prefixes:
manager = cls.Meta.alias_manager
table_prefix = manager.resolve_relation_alias_after_complex(
source_model=source_model,
relation_str=current_relation_str,
relation_field=related_field,
)
used_prefixes.append(table_prefix)
return table_prefix
@classmethod
def _populate_nested_models_from_row( # noqa: CFQ002
cls,
@ -170,14 +201,11 @@ class ModelRow(NewBaseModel):
if model_excludable.is_excluded(related):
return item
relation_str = (
"__".join([current_relation_str, related])
if current_relation_str
else related
relation_str, remainder = cls._process_remainder_and_relation_string(
related_models=related_models,
current_relation_str=current_relation_str,
related=related,
)
remainder = None
if isinstance(related_models, dict) and related_models[related]:
remainder = related_models[related]
child = model_cls.from_row(
row,
related_models=remainder,
@ -190,12 +218,74 @@ class ModelRow(NewBaseModel):
)
item[model_cls.get_column_name_from_alias(related)] = child
if field.is_multi and child:
through_name = cls.Meta.model_fields[related].through.get_name()
through_child = cls.populate_through_instance(
cls._populate_through_instance(
row=row,
item=item,
related=related,
through_name=through_name,
excludable=excludable,
child=child,
proxy_source_model=proxy_source_model,
)
return item
@staticmethod
def _process_remainder_and_relation_string(
related_models: Union[Dict, List],
current_relation_str: Optional[str],
related: str,
) -> Tuple[str, Optional[Union[Dict, List]]]:
"""
Process remainder models and relation string
:param related_models: list or dict of related models
:type related_models: Union[Dict, List]
:param current_relation_str: current relation string
:type current_relation_str: Optional[str]
:param related: name of the relation
:type related: str
"""
relation_str = (
"__".join([current_relation_str, related])
if current_relation_str
else related
)
remainder = None
if isinstance(related_models, dict) and related_models[related]:
remainder = related_models[related]
return relation_str, remainder
@classmethod
def _populate_through_instance( # noqa: CFQ002
cls,
row: sqlalchemy.engine.ResultProxy,
item: Dict,
related: str,
excludable: ExcludableItems,
child: "Model",
proxy_source_model: Optional[Type["Model"]],
) -> None:
"""
Populates the through model on reverse side of current query.
Normally it's child class, unless the query is from queryset.
:param row: row from db result
:type row: sqlalchemy.engine.ResultProxy
:param item: parent item dict
:type item: Dict
:param related: current relation name
:type related: str
:param excludable: structure of fields to include and exclude
:type excludable: ExcludableItems
:param child: child item of parent
:type child: "Model"
:param proxy_source_model: source model from which querysetproxy is constructed
:type proxy_source_model: Type["Model"]
"""
through_name = cls.Meta.model_fields[related].through.get_name()
through_child = cls._create_through_instance(
row=row, related=related, through_name=through_name, excludable=excludable,
)
if child.__class__ != proxy_source_model:
@ -204,10 +294,8 @@ class ModelRow(NewBaseModel):
item[through_name] = through_child
child.set_save_status(True)
return item
@classmethod
def populate_through_instance(
def _create_through_instance(
cls,
row: sqlalchemy.engine.ResultProxy,
through_name: str,
@ -288,12 +376,11 @@ class ModelRow(NewBaseModel):
model=cls, excludable=excludable, alias=table_prefix, use_alias=False,
)
column_prefix = table_prefix + "_" if table_prefix else ""
for column in cls.Meta.table.columns:
alias = cls.get_column_name_from_alias(column.name)
if alias not in item and alias in selected_columns:
prefixed_name = (
f'{table_prefix + "_" if table_prefix else ""}{column.name}'
)
prefixed_name = f"{column_prefix}{column.name}"
item[alias] = source[prefixed_name]
return item

2
ormar/models/newbasemodel.py
View File

@ -227,7 +227,7 @@ class NewBaseModel(pydantic.BaseModel, ModelTableProxy, metaclass=ModelMetaclass
super().__setattr__(name, value)
self.set_save_status(False)
def __getattribute__(self, item: str) -> Any:
def __getattribute__(self, item: str) -> Any: # noqa: CCR001
"""
Because we need to overwrite getting the attribute by ormar instead of pydantic
as well as returning related models and not the value stored on the model the

3
ormar/queryset/actions/filter_action.py
View File

@ -43,9 +43,6 @@ class FilterAction(QueryAction):
super().__init__(query_str=filter_str, model_cls=model_cls)
self.filter_value = value
self._escape_characters_in_clause()
self.is_source_model_filter = False
if self.source_model == self.target_model and "__" not in self.related_str:
self.is_source_model_filter = True
def has_escaped_characters(self) -> bool:
"""Check if value is a string that contains characters to escape"""

85
ormar/queryset/clause.py
View File

@ -19,6 +19,11 @@ class FilterType(Enum):
class FilterGroup:
"""
Filter groups are used in complex queries condition to group and and or
clauses in where condition
"""
def __init__(
self, *args: Any, _filter_type: FilterType = FilterType.AND, **kwargs: Any,
) -> None:
@ -36,6 +41,19 @@ class FilterGroup:
select_related: List = None,
filter_clauses: List = None,
) -> Tuple[List[FilterAction], List[str]]:
"""
Resolves the FilterGroups actions to use proper target model, replace
complex relation prefixes if needed and nested groups also resolved.
:param model_cls: model from which the query is run
:type model_cls: Type["Model"]
:param select_related: list of models to join
:type select_related: List[str]
:param filter_clauses: list of filter conditions
:type filter_clauses: List[FilterAction]
:return: list of filter conditions and select_related list
:rtype: Tuple[List[FilterAction], List[str]]
"""
select_related = select_related if select_related is not None else []
filter_clauses = filter_clauses if filter_clauses is not None else []
qryclause = QueryClause(
@ -51,42 +69,44 @@ class FilterGroup:
self._resolved = True
if self._nested_groups:
for group in self._nested_groups:
if not group._resolved:
(filter_clauses, select_related) = group.resolve(
model_cls=model_cls,
select_related=select_related,
filter_clauses=filter_clauses,
)
self._is_self_model_group()
return filter_clauses, select_related
def _iter(self) -> Generator:
if not self._nested_groups:
yield from self.actions
return
"""
Iterates all actions in a tree
:return: generator yielding from own actions and nested groups
:rtype: Generator
"""
for group in self._nested_groups:
yield from group._iter()
yield from self.actions
def _is_self_model_group(self) -> None:
if self.actions and self._nested_groups:
if all([action.is_source_model_filter for action in self.actions]) and all(
group.is_source_model_filter for group in self._nested_groups
):
self.is_source_model_filter = True
elif self.actions:
if all([action.is_source_model_filter for action in self.actions]):
self.is_source_model_filter = True
else:
if all(group.is_source_model_filter for group in self._nested_groups):
self.is_source_model_filter = True
def _get_text_clauses(self) -> List[sqlalchemy.sql.expression.TextClause]:
"""
Helper to return list of text queries from actions and nested groups
:return: list of text queries from actions and nested groups
:rtype: List[sqlalchemy.sql.elements.TextClause]
"""
return [x.get_text_clause() for x in self._nested_groups] + [
x.get_text_clause() for x in self.actions
]
def get_text_clause(self) -> sqlalchemy.sql.expression.TextClause:
"""
Returns all own actions and nested groups conditions compiled and joined
inside parentheses.
Escapes characters if it's required.
Substitutes values of the models if value is a ormar Model with its pk value.
Compiles the clause.
:return: complied and escaped clause
:rtype: sqlalchemy.sql.elements.TextClause
"""
if self.filter_type == FilterType.AND:
clause = sqlalchemy.text(
"( " + str(sqlalchemy.sql.and_(*self._get_text_clauses())) + " )"
@ -98,11 +118,31 @@ class FilterGroup:
return clause
def or_(*args: Any, **kwargs: Any) -> FilterGroup:
def or_(*args: FilterGroup, **kwargs: Any) -> FilterGroup:
"""
Construct or filter from nested groups and keyword arguments
:param args: nested filter groups
:type args: Tuple[FilterGroup]
:param kwargs: fields names and proper value types
:type kwargs: Any
:return: FilterGroup ready to be resolved
:rtype: ormar.queryset.clause.FilterGroup
"""
return FilterGroup(_filter_type=FilterType.OR, *args, **kwargs)
def and_(*args: Any, **kwargs: Any) -> FilterGroup:
def and_(*args: FilterGroup, **kwargs: Any) -> FilterGroup:
"""
Construct and filter from nested groups and keyword arguments
:param args: nested filter groups
:type args: Tuple[FilterGroup]
:param kwargs: fields names and proper value types
:type kwargs: Any
:return: FilterGroup ready to be resolved
:rtype: ormar.queryset.clause.FilterGroup
"""
return FilterGroup(_filter_type=FilterType.AND, *args, **kwargs)
@ -263,6 +303,11 @@ class QueryClause:
return filter_clauses
def _verify_prefix_and_switch(self, action: "FilterAction") -> None:
"""
Helper to switch prefix to complex relation one if required
:param action: action to switch prefix in
:type action: ormar.queryset.actions.filter_action.FilterAction
"""
manager = self.model_cls.Meta.alias_manager
new_alias = manager.resolve_relation_alias(self.model_cls, action.related_str)
if "__" in action.related_str and new_alias:

46
ormar/queryset/query.py
View File

@ -108,9 +108,6 @@ class Query:
"", self.table, self_related_fields
)
self.apply_order_bys_for_primary_model()
if self._pagination_query_required():
self.select_from = self._build_pagination_subquery()
else:
self.select_from = self.table
related_models = group_related_list(self._select_related)
@ -139,6 +136,9 @@ class Query:
self.sorted_orders,
) = sql_join.build_join()
if self._pagination_query_required():
self._build_pagination_condition()
expr = sqlalchemy.sql.select(self.columns)
expr = expr.select_from(self.select_from)
@ -149,7 +149,7 @@ class Query:
return expr
def _build_pagination_subquery(self) -> sqlalchemy.sql.select:
def _build_pagination_condition(self) -> None:
"""
In order to apply limit and offset on main table in join only
(otherwise you can get only partially constructed main model
@ -160,32 +160,20 @@ class Query:
and query has select_related applied. Otherwise we can limit/offset normally
at the end of whole query.
:return: constructed subquery on main table with limit, offset and order applied
:rtype: sqlalchemy.sql.select
The condition is added to filters to filter out desired number of main model
primary key values. Whole query is used to determine the values.
"""
expr = sqlalchemy.sql.select(self.model_cls.Meta.table.columns)
expr = LimitQuery(limit_count=self.limit_count).apply(expr)
expr = OffsetQuery(query_offset=self.query_offset).apply(expr)
filters_to_use = [
filter_clause
for filter_clause in self.filter_clauses
if filter_clause.is_source_model_filter
]
excludes_to_use = [
filter_clause
for filter_clause in self.exclude_clauses
if filter_clause.is_source_model_filter
]
sorts_to_use = {
k: v for k, v in self.sorted_orders.items() if k.is_source_model_order
}
expr = FilterQuery(filter_clauses=filters_to_use).apply(expr)
expr = FilterQuery(filter_clauses=excludes_to_use, exclude=True).apply(expr)
expr = OrderQuery(sorted_orders=sorts_to_use).apply(expr)
expr = expr.alias(f"{self.table}")
self.filter_clauses = list(set(self.filter_clauses) - set(filters_to_use))
self.exclude_clauses = list(set(self.exclude_clauses) - set(excludes_to_use))
return expr
pk_alias = self.model_cls.get_column_alias(self.model_cls.Meta.pkname)
qry_text = sqlalchemy.text(f"distinct {self.table.name}.{pk_alias}")
limit_qry = sqlalchemy.sql.select([qry_text])
limit_qry = limit_qry.select_from(self.select_from)
limit_qry = self._apply_expression_modifiers(limit_qry)
limit_qry = LimitQuery(limit_count=self.limit_count).apply(limit_qry)
limit_qry = OffsetQuery(query_offset=self.query_offset).apply(limit_qry)
limit_action = FilterAction(
filter_str=f"{pk_alias}__in", value=limit_qry, model_cls=self.model_cls
)
self.filter_clauses.append(limit_action)
def _apply_expression_modifiers(
self, expr: sqlalchemy.sql.select

43
ormar/queryset/queryset.py
View File

@ -20,7 +20,7 @@ from ormar import MultipleMatches, NoMatch
from ormar.exceptions import ModelError, ModelPersistenceError, QueryDefinitionError
from ormar.queryset import FilterQuery
from ormar.queryset.actions.order_action import OrderAction
from ormar.queryset.clause import QueryClause
from ormar.queryset.clause import FilterGroup, QueryClause
from ormar.queryset.prefetch_query import PrefetchQuery
from ormar.queryset.query import Query
@ -192,6 +192,34 @@ class QuerySet:
return self.model.merge_instances_list(result_rows) # type: ignore
return result_rows
def _resolve_filter_groups(self, groups: Any) -> List[FilterGroup]:
"""
Resolves filter groups to populate FilterAction params in group tree.
:param groups: tuple of FilterGroups
:type groups: Any
:return: list of resolver groups
:rtype: List[FilterGroup]
"""
filter_groups = []
if groups:
for group in groups:
if not isinstance(group, FilterGroup):
raise QueryDefinitionError(
"Only ormar.and_ and ormar.or_ "
"can be passed as filter positional"
" arguments,"
"other values need to be passed by"
"keyword arguments"
)
group.resolve(
model_cls=self.model,
select_related=self._select_related,
filter_clauses=self.filter_clauses,
)
filter_groups.append(group)
return filter_groups
@staticmethod
def check_single_result_rows_count(rows: Sequence[Optional["Model"]]) -> None:
"""
@ -288,23 +316,14 @@ class QuerySet:
:return: filtered QuerySet
:rtype: QuerySet
"""
filter_groups = []
if args:
for arg in args:
arg.resolve(
model_cls=self.model,
select_related=self._select_related,
filter_clauses=self.filter_clauses,
)
filter_groups.append(arg)
filter_groups = self._resolve_filter_groups(groups=args)
qryclause = QueryClause(
model_cls=self.model,
select_related=self._select_related,
filter_clauses=self.filter_clauses,
)
filter_clauses, select_related = qryclause.prepare_filter(**kwargs)
filter_clauses = filter_clauses + filter_groups
filter_clauses = filter_clauses + filter_groups # type: ignore
if _exclude:
exclude_clauses = filter_clauses
filter_clauses = self.filter_clauses

58
ormar/queryset/utils.py
View File

@ -4,6 +4,7 @@ from typing import (
Any,
Dict,
List,
Optional,
Sequence,
Set,
TYPE_CHECKING,
@ -13,7 +14,7 @@ from typing import (
)
if TYPE_CHECKING: # pragma no cover
from ormar import Model
from ormar import Model, BaseField
def check_node_not_dict_or_not_last_node(
@ -238,18 +239,13 @@ def get_relationship_alias_model_and_str(
related_field = target_model.Meta.model_fields[relation]
if related_field.is_through:
# through is always last - cannot go further
is_through = True
related_parts.remove(relation)
through_field = related_field.owner.Meta.model_fields[
related_field.related_name or ""
]
if len(previous_models) > 1 and previous_models[-2] == through_field.to:
previous_model = through_field.to
relation = through_field.related_name
else:
relation = related_field.related_name
(previous_model, relation, is_through) = _process_through_field(
related_parts=related_parts,
relation=relation,
related_field=related_field,
previous_model=previous_model,
previous_models=previous_models,
)
if related_field.is_multi:
previous_model = related_field.through
relation = related_field.default_target_field_name() # type: ignore
@ -263,3 +259,39 @@ def get_relationship_alias_model_and_str(
relation_str = "__".join(related_parts)
return table_prefix, target_model, relation_str, is_through
def _process_through_field(
related_parts: List,
relation: Optional[str],
related_field: Type["BaseField"],
previous_model: Type["Model"],
previous_models: List[Type["Model"]],
) -> Tuple[Type["Model"], Optional[str], bool]:
"""
Helper processing through models as they need to be treated differently.
:param related_parts: split relation string
:type related_parts: List[str]
:param relation: relation name
:type relation: str
:param related_field: field with relation declaration
:type related_field: Type["ForeignKeyField"]
:param previous_model: model from which relation is coming
:type previous_model: Type["Model"]
:param previous_models: list of already visited models in relation chain
:type previous_models: List[Type["Model"]]
:return: previous_model, relation, is_through
:rtype: Tuple[Type["Model"], str, bool]
"""
is_through = True
related_parts.remove(relation)
through_field = related_field.owner.Meta.model_fields[
related_field.related_name or ""
]
if len(previous_models) > 1 and previous_models[-2] == through_field.to:
previous_model = through_field.to
relation = through_field.related_name
else:
relation = related_field.related_name
return previous_model, relation, is_through

8
tests/test_filter_groups.py
View File

@ -44,7 +44,6 @@ def test_or_group():
f"{result.actions[1].table_prefix}"
f"_books.title = 'bb' )"
)
assert not result.is_source_model_filter
def test_and_group():
@ -58,7 +57,6 @@ def test_and_group():
f"{result.actions[1].table_prefix}"
f"_books.title = 'bb' )"
)
assert not result.is_source_model_filter
def test_nested_and():
@ -77,7 +75,6 @@ def test_nested_and():
f"{book_prefix}"
f"_books.title = 'dd' ) )"
)
assert not result.is_source_model_filter
def test_nested_group_and_action():
@ -93,7 +90,6 @@ def test_nested_group_and_action():
f"{book_prefix}"
f"_books.title = 'dd' )"
)
assert not result.is_source_model_filter
def test_deeply_nested_or():
@ -120,7 +116,6 @@ def test_deeply_nested_or():
f"( {book_prefix}_books.year > 'xx' OR {book_prefix}_books.title = '22' ) ) )"
)
assert result_qry.replace("\n", "") == expected_qry.replace("\n", "")
assert not result.is_source_model_filter
def test_one_model_group():
@ -128,7 +123,6 @@ def test_one_model_group():
result.resolve(model_cls=Book)
assert len(result.actions) == 2
assert len(result._nested_groups) == 0
assert result.is_source_model_filter
def test_one_model_nested_group():
@ -138,7 +132,6 @@ def test_one_model_nested_group():
result.resolve(model_cls=Book)
assert len(result.actions) == 0
assert len(result._nested_groups) == 2
assert result.is_source_model_filter
def test_one_model_with_group():
@ -146,4 +139,3 @@ def test_one_model_with_group():
result.resolve(model_cls=Book)
assert len(result.actions) == 1
assert len(result._nested_groups) == 1
assert result.is_source_model_filter

42
tests/test_more_same_table_joins.py
View File

@ -122,3 +122,45 @@ async def test_load_all_multiple_instances_of_same_table_in_schema():
assert len(math_class.dict().get("students")) == 2
assert math_class.teachers[0].category.department.name == "Law Department"
assert math_class.students[0].category.department.name == "Math Department"
@pytest.mark.asyncio
async def test_filter_groups_with_instances_of_same_table_in_schema():
async with database:
await create_data()
math_class = (
await SchoolClass.objects.select_related(
["teachers__category__department", "students__category__department"]
)
.filter(
ormar.or_(
students__name="Jane",
teachers__category__name="Domestic",
students__category__name="Foreign",
)
)
.get(name="Math")
)
assert math_class.name == "Math"
assert math_class.students[0].name == "Jane"
assert len(math_class.dict().get("students")) == 2
assert math_class.teachers[0].category.department.name == "Law Department"
assert math_class.students[0].category.department.name == "Math Department"
classes = (
await SchoolClass.objects.select_related(
["students__category__department", "teachers__category__department"]
)
.filter(
ormar.and_(
ormar.or_(
students__name="Jane", students__category__name="Foreign"
),
teachers__category__department__name="Law Department",
)
)
.all()
)
assert len(classes) == 1
assert classes[0].teachers[0].category.department.name == "Law Department"
assert classes[0].students[0].category.department.name == "Math Department"

56
tests/test_or_filters.py
View File

@ -5,6 +5,7 @@ import pytest
import sqlalchemy
import ormar
from ormar.exceptions import QueryDefinitionError
from tests.settings import DATABASE_URL
database = databases.Database(DATABASE_URL)
@ -108,11 +109,60 @@ async def test_or_filters():
assert len(books) == 3
assert not any([x.title in ["The Silmarillion", "The Witcher"] for x in books])
books = (
await Book.objects.select_related("author")
.filter(ormar.or_(year__gt=1980, year__lt=1910))
.filter(title__startswith="The")
.limit(1)
.all()
)
assert len(books) == 1
assert books[0].title == "The Witcher"
books = (
await Book.objects.select_related("author")
.filter(ormar.or_(year__gt=1980, author__name="Andrzej Sapkowski"))
.filter(title__startswith="The")
.limit(1)
.all()
)
assert len(books) == 1
assert books[0].title == "The Witcher"
books = (
await Book.objects.select_related("author")
.filter(ormar.or_(year__gt=1980, author__name="Andrzej Sapkowski"))
.filter(title__startswith="The")
.limit(1)
.offset(1)
.all()
)
assert len(books) == 1
assert books[0].title == "The Tower of Fools"
books = (
await Book.objects.select_related("author")
.filter(ormar.or_(year__gt=1980, author__name="Andrzej Sapkowski"))
.filter(title__startswith="The")
.limit(1)
.offset(1)
.order_by("-id")
.all()
)
assert len(books) == 1
assert books[0].title == "The Witcher"
with pytest.raises(QueryDefinitionError):
await Book.objects.select_related("author").filter('wrong').all()
# TODO: Check / modify
# process and and or into filter groups (V)
# check exclude queries working (V)
# check complex prefixes properly resolved (V)
# fix limit -> change to where subquery to extract number of distinct pk values (V)
# finish docstrings (V)
# fix types for FilterAction and FilterGroup (X)
# when limit and no sql do not allow main model and other models
# check complex prefixes properly resolved
# fix types for FilterAction and FilterGroup (?)
# add docs