I have a schema in graphcool with these nodes (not sure what the correct term is here... leaf? node? model? type??)
type User #model {
auth0UserId: String #isUnique
createdAt: DateTime!
id: ID! #isUnique
userIdentifier: String
bundleIdentifier: String
updatedAt: DateTime!
devices: [Device!]! #relation(name: "UserOnDevice")
tokens: [Token!]! #relation(name: "TokenOnUser")
}
type Device #model {
id: ID! #isUnique
deviceIdentifier: String!
users: [User!]! #relation(name: "UserOnDevice")
token: Token #relation(name: "DeviceOnToken")
}
I'd like to make it so that a user must be authenticated and be related to the device data to be able to query on it. So, for a query like:
query($deviceIdentifier: String!) {
device(deviceIdentifier: $deviceIdentifier) {
id
}
}
This should return null unless they are autthenticated and are a user in the specified relation. I was thinking I needed a permission query like this one:
query ($node_id: ID!, $user_id: ID!) {
SomeDeviceExists(filter: {
id: $node_id,
users: {
id: $user_id
}
})
}
But it turns out that is invalid. How do I do it?
query ($node_id: ID!, $user_id: ID!) {
SomeDeviceExists(filter: {
id: $node_id,
users_some: {
id: $user_id
}
})
}
but this does require submitting the user_id in the request.
Related
I have a graphql schema that i'm parsing
type User {
id: ID!
name: String!
email: String!
age: Int
posts: [Post!]!
}
type Post {
id: ID!
title: String!
body: String!
author: User!
comments: [Comment!]!
}
type Comment {
id: ID!
body: String!
author: User!
post: Post!
}
type Query {
users: [User!]!
user(id: ID!): User
posts: [Post!]!
post(id: ID!): Post
comments: [Comment!]!
comment(id: ID!): Comment
}
i want to get extract each possible query from it as a seperate string
in the above example,
String 1
type Query {
users: [User!]!
}
String 2
type Query {
user(id: ID!): User
}
String 3
type Query {
posts: [Post!]!
}
String 4
type Query {
post(id: ID!): Post
}
String 5
type Query {
comments: [Comment!]!
}
String 6
type Query {
comment(id: ID!): Comment
}
what is the best way to achieve this ? i'm using graphql javascript package
I just tried to implement the Relay in Frontend for this graphql tutorial, In that tutorial, they created graphql server to store URL(Link) bookmarks with the User who posted those URLs.
The relationship between the link and the users is:
Link belongs_to :user,
User has_many :links.
And I listed out all the Links with Users in Frontend, at the time I got the below error.
Warning: RelayResponseNormalizer: Invalid record 1. Expected __typename to be consistent, but the record was assigned conflicting types Link and User. The GraphQL server likely violated the globally unique id requirement by returning the same id for different objects
I'm not aware of how much it will impact the application. because I got the expected result from Frontend.
Frontend View of Query.
I read this relay official blog for this kind of error, but there is no example to know how exactly to resolve this. so can someone help to resolve this?
Relay Query
graphql`
query LinkListQuery {
allLinks {
id,
description,
url,
postedBy {
id,
name
}
}
}`
Schema:
input AUTH_PROVIDER_CREDENTIALS {
email: String!
password: String!
}
input AuthProviderSignupData {
credentials: AUTH_PROVIDER_CREDENTIALS
}
type Link implements Node {
description: String!
id: ID!
postedBy: User
url: String!
votes: [Vote!]!
}
input LinkFilter {
OR: [LinkFilter!]
descriptionContains: String
urlContains: String
}
type Mutation {
createLink(description: String!, url: String!): Link!
createUser(name: String!, authProvider: AuthProviderSignupData): User!
createVote(linkId: ID): Vote!
signinUser(credentials: AUTH_PROVIDER_CREDENTIALS): SignInUserPayload
}
"""An object with an ID."""
interface Node {
"""ID of the object."""
id: ID!
}
type Query {
allLinks(filter: LinkFilter, first: Int, skip: Int): [Link]!
"""Fetches an object given its ID."""
node(
"""ID of the object."""
id: ID!
): Node
}
"""Autogenerated return type of SignInUser"""
type SignInUserPayload {
token: String
user: User
}
type User implements Node {
email: String!
id: ID!
links: [Link!]!
name: String!
votes: [Vote!]!
}
type Vote {
id: ID!
link: Link!
user: User!
}
I am using ApolloServer/Prisma2/GraphQL/Typescript/MySQL
I have created two models, User, and Post. My createUser and createPost mutations are working fine. However, I am having trouble getting my delete mutations working. Focusing on the deletePost, here is what I have in my code.
<<schema.graphql>>
type Query {
posts: [Post!]!
users: [User!]!
}
type Mutation {
createPost(title: String!, body: String!): Post!
createUser(name: String!, email: String!, password: String!): User!
deletePost(postId: ID!): Post
deleteAllPosts: [Post!]!
}
type Post {
id: ID!
title: String!
body: String!
author: User
published: Boolean!
}
type User {
id: ID!
name: String!
email: String!
posts: [Post!]!
}
<<schema.prisma>>
model Post {
id Int #id #default(autoincrement())
createdAt DateTime #default(now())
updatedAt DateTime #updatedAt #default(now())
title String
body String
published Boolean #default(false)
postedBy User? #relation(fields: [authorId], references: [id])
authorId Int?
}
model User {
id Int #id #default(autoincrement())
name String
email String #unique
password String
posts Post[]
}
<<Mutation.ts>>
async function deletePost(parent, { postId }, context, info) {
return await context.prisma.post.delete(
{
where {
id: parseInt(postId)
}
},
info
)
}
Note that the createPost and createUser are also in the Mutation.ts file and are working correctly. So I'm assuming there is no issue with the Apollo server.
When I use the GraphQL playground I use the following:
mutation {
deletePost(postId: "1") {
id
}
}
with the following result:
{
"data": {
"deletePost": null
}
}
I want the mutation to return the deleted post (at least the id if nothing else). In addition, the database is not deleting anything. I'd appreciate any help.
Let's take an example from the github repo of prisma:
We have a user, the user could have multiple posts, and one post could have multiple links.
My goal is, to retrieve all posts and all links.
This means, my response is a list (links) in a list (posts).
I want to map the values I get back as two nested lists.
datamodel.prisma
type User {
id: ID! #id
email: String! #unique
name: String
posts: [Post]!
}
type Post {
id: ID! #id
createdAt: DateTime! #createdAt
updatedAt: DateTime! #updatedAt
published: Boolean! #default(value: false)
title: String!
content: String
author: User!
links: [Link]!
}
type Link {
id: ID! #id
url: String
title: String
post: Post!
}
schema.graphql
type Query {
...
}
type Mutation {
...
}
type Link {
id: ID!
url: String
title: String
post: Post!
}
type Post {
id: ID!
createdAt: DateTime!
updatedAt: DateTime!
published: Boolean!
title: String!
content: String
author: User!
}
type User {
id: ID!
email: String!
name: String
posts: [Post]!
}
I want to query all posts of a user, and all of the links for every post in the response.
How would I query this request?
user {
id
posts {
id
links {
id
}
}
}
The above code snipper would not work.
EDIT
I want to use the following:
User: {
listPosts: (parent, args, context, info) {
return context.prisma.posts().links()
}
}
So in my response (data in front-end via react-apollo Query Component), I want to map over posts AND the links in each post.
BUT the links attribute in posts is null.
Is there another way to achieve this?!
According to the docs:
Prisma client has a fluent API to query relations in your database. Meaning you can simply chain your method calls to navigate the relation properties of the returned records. This is only possible when retrieving single records, not for lists. Meaning you can not query relation fields of records that are returned in a list.
In order to get around that limitation, you can use the $fragment method:
const fragment = `
fragment UserWithPostsAndLinks on User {
id
email
name
posts {
id
title
content
links {
id
url
title
}
}
}
`
const userWithPostsAndLinks = await prisma.user({ id: args.id }).$fragment(fragment)
I have a profilePicture field on my User type that is being returned as null even though I can see the data is there in the database. I have the following setup:
// datamodel.prisma
enum ContentType {
IMAGE
VIDEO
}
type Content #embedded {
type: ContentType! #default(value: IMAGE)
url: String
publicId: String
}
type User {
id: ID! #id
name: String
username: String! #unique
profilePicture: Content
website: String
bio: String
email: String! #unique
phoneNumber: Int
gender: Gender! #default(value: NOTSPECIFIED)
following: [User!]! #relation(name: "Following", link: INLINE)
followers: [User!]! #relation(name: "Followers", link: INLINE)
likes: [Like!]! #relation(name: "UserLikes")
comments: [Comment!]! #relation(name: "UserComments")
password: String!
resetToken: String
resetTokenExpiry: String
posts: [Post!]! #relation(name: "Posts")
verified: Boolean! #default(value: false)
permissions: [Permission!]! #default(value: USER)
createdAt: DateTime! #createdAt
updatedAt: DateTime! #updatedAt
}
// schema.graphql
type User {
id: ID!
name: String!
username: String!
profilePicture: Content
website: String
bio: String
email: String!
phoneNumber: Int
gender: Gender!
following: [User!]!
followers: [User!]!
verified: Boolean
posts: [Post!]!
likes: [Like!]!
comments: [Comment!]!
permissions: [Permission!]!
}
Like I said there is data in the database but when I run the below query in Playground I get null:
// query
{
user(id: "5c8e5fb424aa9a000767c6c0") {
profilePicture {
url
}
}
}
// response
{
"data": {
"user": {
"profilePicture": null
}
}
}
Any idea why?
ctx.prisma.user(({ id }), info); doesn’t return profilePicture even though the field exists in generated/prisma.graphql
Fixed it. I had to add a field resolver for profilePicture under User. I've done this before for related fields like posts and comments and I think It's because profilePicture points to the #embedded Content type so is sort of a related field as well.
{
User: {
posts: parent => prisma.user({ id: parent.id }).posts(),
following: parent => prisma.user({ id: parent.id }).following(),
followers: parent => prisma.user({ id: parent.id }).followers(),
likes: parent => prisma.user({ id: parent.id }).likes(),
comments: parent => prisma.user({ id: parent.id }).comments(),
profilePicture: parent => prisma.user({ id: parent.id }).profilePicture()
}
}