hotchocolate | Hot Chocolate GraphQL server for .NET , the Strawberry | GraphQL library

So I'm trying to figure out how to tell EfCore when to apply an include to an IQueryable object based on whether the GraphQl request from the client actually includes the related object.

Example:

• 2 Classes: Person, Payment

• Theses are kept in 2 different tables and related Person -> Payment in a one to many relationship

• I have 1 GraphQl Query set up to retrieve all people in the Database:

  ...

I cant seem to get Projections with HotChocolate working for GraphQl. According to the documentation Projections should prevent over-requesting of data from the DB, and help connect data in related tables. As a simple example I set up the following:

I am new to GraphQL. Whenever I am running my project it shows

server is not reachable

I have crosschecked project files and I guess the issue is with the Startup.cs file. I am trying to use app.UseGraphQL in Configure function but the IDE could not suggest me a correct library for it.

This is my code:

We recently introduced GraphQL to our project, I've never used it before, however I like it a lot. We decided to go with the HotChocolate library for .NET Core and Apollo for client side.

One thing I am not quite sure is about mutations, specifically peforming updates and partial updates with mutations. I read somewhere that the practice is and that I should stick with creating specific mutation for each update, for instance updateUsername(), updateAddress(), updateCity() all of them should have specific mutation.

Issue with that is that my codebase will grow enormously if I decide to go in that direction, as we are very much data driven, with a lot of tables and columns per table.

Another question is, how to handle nullable properties, I can create a mutation which accepts some input object, but I'll end up with my entity being overwritten and all nullable properties not provided on the calling end will be set to null. Is there a way to handle this update partially or I should go with specific update mutation for each property I want updated?

I am trying to implement schema-first in Hot Chocolate and running into SchemaException

I have the below GraphQL Schema

I'm trying to wrap my head around GraphQL in general and a HotChocolate demo I just watched. Here's what I see as benefits:

• Client can request any combination of fields thus offering maximum flexibility
• Queries are directly translated into SQL resulting in high performance and little overhead

My question or concern, if you want so, is: doesn't this couple my API to the database at a level that's almost certain to break at some point? If I need to adjust my DB schema, things will break. Is this concern valid?

I'm implementing a very simple query using the HotChocolate GraphQL library in a .Net 5 project. I've been following the tutorial series from the HotChocolate GitHub repository but in my project I don't want GraphQL accessing the context directly and would instead prefer for it to access a repository that manages database access via the context.

I've built a few REST endpoints in this project alongside GraphQL and this repository pattern works properly there. However when I call these repository methods from a GraphQL, the context is disposed before the repository method uses it.

I am guessing that the way HotChocolate uses the context causes it to get disposed earlier than I am expecting, but I am having trouble figuring out when/where it gets disposed and how I can prevent it from being disposed so my repository methods will work.

ContentRepository.cs

I am building a GraphQL endpoint with a user authentication service. For the user authentication, I'm using Entity Framework Core.

In the mutation resolver, when I used the constructor DI [Ref], I am getting below error when accessing the resolver for 2nd time. "Cannot access a disposed object.\r\nObject name: 'UserManager`1'."

As per the Hot Chocolate instruction, constructor DIs are singleton types, and not quite sure why I am getting this error.

However, If I use [Service] key word to inject in the resolver method. I am not getting any errors [Ref].

I'm using HotChocolate 12.0.1. I have following type definition: