How to change hotchocolate default json serializer

Question

How can i change the json serializer used by hotchocalate i could not find anything in the documentation.

i tried to look at the source code but it seems like it hard coded in the HttpResponseExtensions .

its uses camel case so it will a pain to change all my models in the front side of the app , any ideas ? i think that the team is aware of this : https://github.com/ChilliCream/hotchocolate/issues/4072 but i'm looking for a workaround

Answer 1

Came across this question when looking for a way of matching cases to Models. In my case I wanted to keep casings the same for the query input and response fields.

Got around this by adding a naming convention to override the DefaultNamingConventions:

public class NoCaseNamingConvention : DefaultNamingConventions
{
    public override NameString GetMemberName(MemberInfo member, MemberKind kind) {
        if (member == null)
            throw new ArgumentNullException(nameof(member));

        if ((kind == MemberKind.InputObjectField || kind == MemberKind.ObjectField) && member.MemberType == MemberTypes.Property)
            return member.Name;

        return base.GetMemberName(member, kind);
    }
}

And adding the Convention to the GraphQL:

services.AddGraphQLServer()
    .AddConvention<INamingConventions, NoCaseNamingConvention>()
    .RegisterDbContext<ApplicationContext>(DbContextKind.Pooled)
    .AddQueryType<Query>()
    .AddProjections()
    .AddFiltering()
    .AddSorting();

Also worth noting you can change the name of the top level response object in data:

public class Query
{
    [GraphQLName("Components")]
    [UseProjection]
    [UseFiltering]
    [UseSorting]
    public IQueryable<ComponentTable> GetComponents(ApplicationContext context) => context.Components;
}

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Hope this is helpful to folks :)