For background, I am following the tutorial here: https://www.youtube.com/watch?v=HuN94qNwQmM .
As the code is too long I am putting that in git https://github.com/dikeshkumar135/CommandERGQL
Now, coming to the problem, when I am making request with this body
query{
platform{
id,
name,
commands{
howTo
}
}
}
I am getting the data for platform with commands value as null and the below error:
{
"message": "There was no argument with the name `platform` found on the field `commands`.",
"locations": [
{
"line": 5,
"column": 5
}
],
"path": [
"platform",
1,
"commands"
],
"extensions": {
"fieldName": "commands",
"argumentName": "platform"
}
If I remove the type it's working fine, but if I add type then the problem occurs to get related objects.
In HotChocolate v12, DependecyInjection included in the ResolverWith method assumes all parameters as an Argument. Except for below
There are also specific arguments that will be automatically populated by Hot Chocolate when the resolver is executed. These include Dependency injection services, DataLoaders, state, or even context like a parent value.
Here is some example for the upgrade for the tutorial you are using
public IQueryable<Command> GetCommands(
[Parent] Platform platform,
[ScopedService] AppDbContext context)
{
return context.Commands.Where(p => p.PlatformId == platform.Id);
}
I downgraded hotchocolate packages from 12.0.1 to 11.0.8 ad it worked. It was a suggestion to my comment in youtube.
if you don't have goal to update data, you can omit to use EF and use, just for exmaple, NReco.GraphQL to set up graphql schema (including relation between schema objects) via json-style definition. Setting db-connection quite easy and under the hood it's ORM.