Dgraph data is not accessible via graphql if added via DQL mutation - graphql

Question

What I want to do
Add data using DQL mutation https://github.com/dgraph-io/dgo#running-a-mutation and these data to also be visible via graphql.
Dgraph version: v21.03.2
DQL schema:
<Product.created_at>: datetime .
<Product.image>: string .
<Product.name>: string #index(hash) #upsert .
<Product.slug>: string #index(hash) #upsert .
<Product.updated_at>: datetime .
<dgraph.drop.op>: string .
<dgraph.graphql.p_query>: string #index(sha256) .
<dgraph.graphql.schema>: string .
<dgraph.graphql.xid>: string #index(exact) #upsert .
type <Product> {
Product.name
Product.slug
Product.image
Product.created_at
Product.updated_at
}
type <dgraph.graphql> {
dgraph.graphql.schema
dgraph.graphql.xid
}
type <dgraph.graphql.persisted_query> {
dgraph.graphql.p_query
}
GraphQL schema:
type Product {
id: ID!
name: String! #id #dgraph(pred: "Product.name")
slug: String! #id #dgraph(pred: "Product.slug")
image: String #dgraph(pred: "Product.image")
created_at: DateTime! #dgraph(pred: "Product.created_at")
updated_at: DateTime! #dgraph(pred: "Product.updated_at")
}
Using the above schema, graphql queries are working fine.
Graphql mutation
mutation MyMutation {
addProduct(input: {name: "product 1", slug: "prod-1", created_at: "2021-10-04T06:37:57.707227339Z", updated_at: "2021-10-04T06:37:57.707227339Z"}) {
numUids
}
}
Graphql Query
query MyQuery {
queryProduct {
name
}
}
response of the graphql query:
{
"data": {
"queryProduct": [
{
"name": "product 1"
}
]
},
"extensions": {
"touched_uids": 2,
"tracing": {
"version": 1,
"startTime": "2021-10-04T06:42:01.064395081Z",
"endTime": "2021-10-04T06:42:01.065675778Z",
"duration": 1280687,
"execution": {
"resolvers": [
{
"path": [
"queryProduct"
],
"parentType": "Query",
"fieldName": "queryProduct",
"returnType": "[Product]",
"startOffset": 110469,
"duration": 1164739,
"dgraph": [
{
"label": "query",
"startOffset": 149859,
"duration": 1123999
}
]
}
]
}
}
}
}
Then I did a mutation using dgo: https://github.com/dgraph-io/dgo#running-a-mutation and the data are shown fine using the ratel tool.
When I try again the Graphql Query:
query MyQuery {
queryProduct {
name
}
}
none of these are returned in the graphql response.

Answer 1

The issue is because the dgraph also wants a DType to be passed via dql mutation like so:
models.Product{
Name: "product name",
Slug: "product-slug",
Image: "test.jpg",
CreatedAt: time.Now(),
UpdatedAt: time.Now(),
DType: []string{"Product"}, // here is the trick
}