Merge branch 'master' into v3

examples/cookbook-plain/requirements.txt

@@ -1,4 +1,4 @@
 graphene>=2.1,<3
 graphene-django>=2.1,<3
 graphql-core>=2.1,<3
-django==3.0.3
+django==3.0.7

examples/cookbook/requirements.txt

@@ -1,5 +1,5 @@
 graphene>=2.1,<3
 graphene-django>=2.1,<3
 graphql-core>=2.1,<3
-django==3.0.3
+django==3.0.7
 django-filter>=2

graphene_django/converter.py

@@ -281,11 +281,15 @@ def convert_field_to_djangomodel(field, registry=None):
 
 @convert_django_field.register(ArrayField)
 def convert_postgres_array_to_list(field, registry=None):
-    base_type = convert_django_field(field.base_field)
-    if not isinstance(base_type, (List, NonNull)):
-        base_type = type(base_type)
+    inner_type = convert_django_field(field.base_field)
+    if not isinstance(inner_type, (List, NonNull)):
+        inner_type = (
+            NonNull(type(inner_type))
+            if inner_type.kwargs["required"]
+            else type(inner_type)
+        )
     return List(
-        base_type,
+        inner_type,
         description=get_django_field_description(field),
         required=not field.null,
     )
@@ -303,7 +307,11 @@ def convert_postgres_field_to_string(field, registry=None):
 def convert_postgres_range_to_string(field, registry=None):
     inner_type = convert_django_field(field.base_field)
     if not isinstance(inner_type, (List, NonNull)):
-        inner_type = type(inner_type)
+        inner_type = (
+            NonNull(type(inner_type))
+            if inner_type.kwargs["required"]
+            else type(inner_type)
+        )
     return List(
         inner_type,
         description=get_django_field_description(field),

graphene_django/debug/tests/test_query.py

@@ -1,4 +1,5 @@
 import graphene
+import pytest
 from graphene.relay import Node
 from graphene_django import DjangoConnectionField, DjangoObjectType
 
@@ -54,7 +55,10 @@ def test_should_query_field():
     assert result.data == expected
 
 
-def test_should_query_nested_field():
+@pytest.mark.parametrize("max_limit", [None, 100])
+def test_should_query_nested_field(graphene_settings, max_limit):
+    graphene_settings.RELAY_CONNECTION_MAX_LIMIT = max_limit
+
     r1 = Reporter(last_name="ABA")
     r1.save()
     r2 = Reporter(last_name="Griffin")
@@ -165,7 +169,10 @@ def test_should_query_list():
     assert result.data == expected
 
 
-def test_should_query_connection():
+@pytest.mark.parametrize("max_limit", [None, 100])
+def test_should_query_connection(graphene_settings, max_limit):
+    graphene_settings.RELAY_CONNECTION_MAX_LIMIT = max_limit
+
     r1 = Reporter(last_name="ABA")
     r1.save()
     r2 = Reporter(last_name="Griffin")
@@ -207,12 +214,16 @@ def test_should_query_connection():
     )
     assert not result.errors
     assert result.data["allReporters"] == expected["allReporters"]
+    assert len(result.data["_debug"]["sql"]) == 2
     assert "COUNT" in result.data["_debug"]["sql"][0]["rawSql"]
     query = str(Reporter.objects.all()[:1].query)
     assert result.data["_debug"]["sql"][1]["rawSql"] == query
 
 
-def test_should_query_connectionfilter():
+@pytest.mark.parametrize("max_limit", [None, 100])
+def test_should_query_connectionfilter(graphene_settings, max_limit):
+    graphene_settings.RELAY_CONNECTION_MAX_LIMIT = max_limit
+
     from ...filter import DjangoFilterConnectionField
 
     r1 = Reporter(last_name="ABA")
@@ -257,6 +268,7 @@ def test_should_query_connectionfilter():
     )
     assert not result.errors
     assert result.data["allReporters"] == expected["allReporters"]
+    assert len(result.data["_debug"]["sql"]) == 2
     assert "COUNT" in result.data["_debug"]["sql"][0]["rawSql"]
     query = str(Reporter.objects.all()[:1].query)
     assert result.data["_debug"]["sql"][1]["rawSql"] == query

graphene_django/fields.py

@@ -1,7 +1,10 @@
 from functools import partial
 
 from django.db.models.query import QuerySet
-from graphql_relay.connection.arrayconnection import connection_from_array_slice
+from graphql_relay.connection.arrayconnection import (
+    connection_from_array_slice,
+    get_offset_with_default,
+)
 from promise import Promise
 
 from graphene import NonNull
@@ -127,24 +130,37 @@ class DjangoConnectionField(ConnectionField):
         return connection._meta.node.get_queryset(queryset, info)
 
     @classmethod
-    def resolve_connection(cls, connection, args, iterable):
+    def resolve_connection(cls, connection, args, iterable, max_limit=None):
         iterable = maybe_queryset(iterable)
+
         if isinstance(iterable, QuerySet):
-            _len = iterable.count()
+            list_length = iterable.count()
+            list_slice_length = (
+                min(max_limit, list_length) if max_limit is not None else list_length
+            )
         else:
-            _len = len(iterable)
+            list_length = len(iterable)
+            list_slice_length = (
+                min(max_limit, list_length) if max_limit is not None else list_length
+            )
+
+        after = get_offset_with_default(args.get("after"), -1) + 1
+
+        if max_limit is not None and args.get("first", None) == None:
+            args["first"] = max_limit
+
         connection = connection_from_array_slice(
-            iterable,
+            iterable[after:],
             args,
-            slice_start=0,
-            array_length=_len,
-            array_slice_length=_len,
+            slice_start=after,
+            array_length=list_length,
+            array_slice_length=list_slice_length,
             connection_type=partial(connection_adapter, connection),
             edge_type=connection.Edge,
             page_info_type=page_info_adapter,
         )
         connection.iterable = iterable
-        connection.length = _len
+        connection.length = list_length
         return connection
 
     @classmethod
@@ -189,7 +205,9 @@ class DjangoConnectionField(ConnectionField):
         # thus the iterable gets refiltered by resolve_queryset
         # but iterable might be promise
         iterable = queryset_resolver(connection, iterable, info, args)
-        on_resolve = partial(cls.resolve_connection, connection, args)
+        on_resolve = partial(
+            cls.resolve_connection, connection, args, max_limit=max_limit
+        )
 
         if Promise.is_thenable(iterable):
             return Promise.resolve(iterable).then(on_resolve)

graphene_django/filter/fields.py

@@ -1,6 +1,7 @@
 from collections import OrderedDict
 from functools import partial
 
+from django.core.exceptions import ValidationError
 from graphene.types.argument import to_arguments
 from ..fields import DjangoConnectionField
 from .utils import get_filtering_args_from_filterset, get_filterset_class
@@ -59,7 +60,12 @@ class DjangoFilterConnectionField(DjangoConnectionField):
             connection, iterable, info, args
         )
         filter_kwargs = {k: v for k, v in args.items() if k in filtering_args}
-        return filterset_class(data=filter_kwargs, queryset=qs, request=info.context).qs
+        filterset = filterset_class(
+            data=filter_kwargs, queryset=qs, request=info.context
+        )
+        if filterset.form.is_valid():
+            return filterset.qs
+        raise ValidationError(filterset.form.errors.as_json())
 
     def get_queryset_resolver(self):
         return partial(

graphene_django/filter/tests/test_fields.py

@@ -412,6 +412,114 @@ def test_global_id_field_relation():
     assert id_filter.field_class == GlobalIDFormField
 
 
+def test_global_id_field_relation_with_filter():
+    class ReporterFilterNode(DjangoObjectType):
+        class Meta:
+            model = Reporter
+            interfaces = (Node,)
+            filter_fields = ["first_name", "articles"]
+
+    class ArticleFilterNode(DjangoObjectType):
+        class Meta:
+            model = Article
+            interfaces = (Node,)
+            filter_fields = ["headline", "reporter"]
+
+    class Query(ObjectType):
+        all_reporters = DjangoFilterConnectionField(ReporterFilterNode)
+        all_articles = DjangoFilterConnectionField(ArticleFilterNode)
+        reporter = Field(ReporterFilterNode)
+        article = Field(ArticleFilterNode)
+
+    r1 = Reporter.objects.create(first_name="r1", last_name="r1", email="r1@test.com")
+    r2 = Reporter.objects.create(first_name="r2", last_name="r2", email="r2@test.com")
+    Article.objects.create(
+        headline="a1",
+        pub_date=datetime.now(),
+        pub_date_time=datetime.now(),
+        reporter=r1,
+        editor=r1,
+    )
+    Article.objects.create(
+        headline="a2",
+        pub_date=datetime.now(),
+        pub_date_time=datetime.now(),
+        reporter=r2,
+        editor=r2,
+    )
+
+    # Query articles created by the reporter `r1`
+    query = """
+    query {
+        allArticles (reporter: "UmVwb3J0ZXJGaWx0ZXJOb2RlOjE=") {
+            edges {
+                node {
+                    id
+                }
+            }
+        }
+    }
+    """
+    schema = Schema(query=Query)
+    result = schema.execute(query)
+    assert not result.errors
+    # We should only get back a single article
+    assert len(result.data["allArticles"]["edges"]) == 1
+
+
+def test_global_id_field_relation_with_filter_not_valid_id():
+    class ReporterFilterNode(DjangoObjectType):
+        class Meta:
+            model = Reporter
+            interfaces = (Node,)
+            filter_fields = ["first_name", "articles"]
+
+    class ArticleFilterNode(DjangoObjectType):
+        class Meta:
+            model = Article
+            interfaces = (Node,)
+            filter_fields = ["headline", "reporter"]
+
+    class Query(ObjectType):
+        all_reporters = DjangoFilterConnectionField(ReporterFilterNode)
+        all_articles = DjangoFilterConnectionField(ArticleFilterNode)
+        reporter = Field(ReporterFilterNode)
+        article = Field(ArticleFilterNode)
+
+    r1 = Reporter.objects.create(first_name="r1", last_name="r1", email="r1@test.com")
+    r2 = Reporter.objects.create(first_name="r2", last_name="r2", email="r2@test.com")
+    Article.objects.create(
+        headline="a1",
+        pub_date=datetime.now(),
+        pub_date_time=datetime.now(),
+        reporter=r1,
+        editor=r1,
+    )
+    Article.objects.create(
+        headline="a2",
+        pub_date=datetime.now(),
+        pub_date_time=datetime.now(),
+        reporter=r2,
+        editor=r2,
+    )
+
+    # Filter by the global ID that does not exist
+    query = """
+    query {
+        allArticles (reporter: "fake_global_id") {
+            edges {
+                node {
+                    id
+                }
+            }
+        }
+    }
+    """
+    schema = Schema(query=Query)
+    result = schema.execute(query)
+    assert "Invalid ID specified." in result.errors[0].message
+
+
 def test_global_id_multiple_field_implicit():
     field = DjangoFilterConnectionField(ReporterNode, fields=["pets"])
     filterset_class = field.filterset_class

graphene_django/tests/test_converter.py

@@ -314,6 +314,14 @@ def test_should_postgres_array_convert_list():
     )
     assert isinstance(field.type, graphene.NonNull)
     assert isinstance(field.type.of_type, graphene.List)
+    assert isinstance(field.type.of_type.of_type, graphene.NonNull)
+    assert field.type.of_type.of_type.of_type == graphene.String
+
+    field = assert_conversion(
+        ArrayField, graphene.List, models.CharField(max_length=100, null=True)
+    )
+    assert isinstance(field.type, graphene.NonNull)
+    assert isinstance(field.type.of_type, graphene.List)
     assert field.type.of_type.of_type == graphene.String
 
 
@@ -325,6 +333,17 @@ def test_should_postgres_array_multiple_convert_list():
     assert isinstance(field.type, graphene.NonNull)
     assert isinstance(field.type.of_type, graphene.List)
     assert isinstance(field.type.of_type.of_type, graphene.List)
+    assert isinstance(field.type.of_type.of_type.of_type, graphene.NonNull)
+    assert field.type.of_type.of_type.of_type.of_type == graphene.String
+
+    field = assert_conversion(
+        ArrayField,
+        graphene.List,
+        ArrayField(models.CharField(max_length=100, null=True)),
+    )
+    assert isinstance(field.type, graphene.NonNull)
+    assert isinstance(field.type.of_type, graphene.List)
+    assert isinstance(field.type.of_type.of_type, graphene.List)
     assert field.type.of_type.of_type.of_type == graphene.String
 
 
@@ -345,7 +364,8 @@ def test_should_postgres_range_convert_list():
     field = assert_conversion(IntegerRangeField, graphene.List)
     assert isinstance(field.type, graphene.NonNull)
     assert isinstance(field.type.of_type, graphene.List)
-    assert field.type.of_type.of_type == graphene.Int
+    assert isinstance(field.type.of_type.of_type, graphene.NonNull)
+    assert field.type.of_type.of_type.of_type == graphene.Int
 
 
 def test_generate_enum_name():

graphene_django/tests/test_query.py

@@ -1109,6 +1109,98 @@ def test_should_resolve_get_queryset_connectionfields():
     assert result.data == expected
 
 
+REPORTERS = [
+    dict(
+        first_name="First {}".format(i),
+        last_name="Last {}".format(i),
+        email="johndoe+{}@example.com".format(i),
+        a_choice=1,
+    )
+    for i in range(6)
+]
+
+
+def test_should_return_max_limit(graphene_settings):
+    graphene_settings.RELAY_CONNECTION_MAX_LIMIT = 4
+    reporters = [Reporter(**kwargs) for kwargs in REPORTERS]
+    Reporter.objects.bulk_create(reporters)
+
+    class ReporterType(DjangoObjectType):
+        class Meta:
+            model = Reporter
+            interfaces = (Node,)
+
+    class Query(graphene.ObjectType):
+        all_reporters = DjangoConnectionField(ReporterType)
+
+    schema = graphene.Schema(query=Query)
+    query = """
+        query AllReporters {
+            allReporters {
+                edges {
+                    node {
+                        id
+                    }
+                }
+            }
+        }
+    """
+
+    result = schema.execute(query)
+    assert not result.errors
+    assert len(result.data["allReporters"]["edges"]) == 4
+
+
+def test_should_have_next_page(graphene_settings):
+    graphene_settings.RELAY_CONNECTION_MAX_LIMIT = 4
+    reporters = [Reporter(**kwargs) for kwargs in REPORTERS]
+    Reporter.objects.bulk_create(reporters)
+    db_reporters = Reporter.objects.all()
+
+    class ReporterType(DjangoObjectType):
+        class Meta:
+            model = Reporter
+            interfaces = (Node,)
+
+    class Query(graphene.ObjectType):
+        all_reporters = DjangoConnectionField(ReporterType)
+
+    schema = graphene.Schema(query=Query)
+    query = """
+        query AllReporters($first: Int, $after: String) {
+            allReporters(first: $first, after: $after) {
+                pageInfo {
+                    hasNextPage
+                    endCursor
+                }
+                edges {
+                    node {
+                        id
+                    }
+                }
+            }
+        }
+    """
+
+    result = schema.execute(query, variable_values={})
+    assert not result.errors
+    assert len(result.data["allReporters"]["edges"]) == 4
+    assert result.data["allReporters"]["pageInfo"]["hasNextPage"]
+
+    last_result = result.data["allReporters"]["pageInfo"]["endCursor"]
+    result2 = schema.execute(query, variable_values=dict(first=4, after=last_result))
+    assert not result2.errors
+    assert len(result2.data["allReporters"]["edges"]) == 2
+    assert not result2.data["allReporters"]["pageInfo"]["hasNextPage"]
+    gql_reporters = (
+        result.data["allReporters"]["edges"] + result2.data["allReporters"]["edges"]
+    )
+
+    assert {to_global_id("ReporterType", reporter.id) for reporter in db_reporters} == {
+        gql_reporter["node"]["id"] for gql_reporter in gql_reporters
+    }
+
+
 def test_should_preserve_prefetch_related(django_assert_num_queries):
     class ReporterType(DjangoObjectType):
         class Meta:

setup.py

@@ -50,6 +50,10 @@ setup(
         "Programming Language :: Python :: 3.7",
         "Programming Language :: Python :: 3.8",
         "Programming Language :: Python :: Implementation :: PyPy",
+        "Framework :: Django",
+        "Framework :: Django :: 1.11",
+        "Framework :: Django :: 2.2",
+        "Framework :: Django :: 3.0",
     ],
     keywords="api graphql protocol rest relay graphene",
     packages=find_packages(exclude=["tests"]),