-
-
Notifications
You must be signed in to change notification settings - Fork 0
/
graphql_overview.py
91 lines (69 loc) · 1.55 KB
/
graphql_overview.py
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
from dataclasses import dataclass
from datetime import date, datetime
from typing import Collection
from uuid import UUID, uuid4
from graphql import graphql_sync, print_schema
from apischema.graphql import graphql_schema, resolver
@dataclass
class User:
id: UUID
username: str
birthday: date | None = None
@resolver
def posts(self) -> Collection["Post"]:
return [post for post in POSTS if post.author.id == self.id]
@dataclass
class Post:
id: UUID
author: User
date: datetime
content: str
USERS = [User(uuid4(), "foo"), User(uuid4(), "bar")]
POSTS = [Post(uuid4(), USERS[0], datetime.now(), "Hello world!")]
def users() -> Collection[User]:
return USERS
def posts() -> Collection[Post]:
return POSTS
def user(username: str) -> User | None:
for user in users():
if user.username == username:
return user
else:
return None
schema = graphql_schema(query=[users, user, posts], id_types={UUID})
schema_str = """\
type Query {
users: [User!]!
user(username: String!): User
posts: [Post!]!
}
type User {
id: ID!
username: String!
birthday: Date
posts: [Post!]!
}
scalar Date
type Post {
id: ID!
author: User!
date: Datetime!
content: String!
}
scalar Datetime"""
assert print_schema(schema) == schema_str
query = """
{
users {
username
posts {
content
}
}
}"""
assert graphql_sync(schema, query).data == {
"users": [
{"username": "foo", "posts": [{"content": "Hello world!"}]},
{"username": "bar", "posts": []},
]
}