/// <summary>
/// Creates a query that counts the number of models that comply to a set of conditions
/// </summary>
/// <typeparam name="TModel">The type of model to count</typeparam>
/// <returns>A function that takes a graphql context and returns a count of models that satisfy the condition</returns>
public static Func <ResolveFieldContext <object>, Task <object> > CreateCountQuery <TModel>()
where TModel : class, IOwnerAbstractModel, new()
{
return(async context =>
{
// Fetch the models that we need
var models = QueryHelpers.CreateResolveFunction <TModel>()(context);
// Apply conditions to the query
models = QueryHelpers.CreateWhereCondition(context, models);
models = QueryHelpers.CreateIdsCondition(context, models);
models = QueryHelpers.CreateIdCondition(context, models);
return new NumberObject {
Number = await models.CountAsync()
};
});
}
