DB.Table("langs").Migrator().DropTable(&Language{})
	DB.Table("langs").AutoMigrate(&Language{})

	if err := DB.Table("langs").Save(&lang).Error; err != nil {
		t.Errorf("no error should happen when creating data, but got %v", err)
	}

	var result3 Language
	if err := DB.Table("langs").First(&result3, "code = ?", lang.Code).Error; err != nil || result3.Name != lang.Name {

link: https://guitton.co/posts/fastapi-monitoring/ title: How to monitor your FastAPI service - author: Precious Ndubueze author_link: https://medium.com/@gabbyprecious2000 link: https://medium.com/@gabbyprecious2000/creating-a-crud-app-with-fastapi-part-one-7c049292ad37 title: Creating a CRUD App with FastAPI (Part one) - author: Farhad Malik author_link: https://medium.com/@farhadmalik link: https://towardsdatascience.com/build-and-host-fast-data-science-applications-using-fastapi-823be8a1d6a0 title:...

```json
{
  "message": "Hello World"
}
```

Of course, you will probably find much better ways to take advantage of this than formatting JSON. 😉

## Default response class

When creating a **FastAPI** class instance or an `APIRouter` you can specify which response class to use by default.

The parameter that defines this is `default_response_class`.

        void callback(CQ query);
    }

    @FunctionalInterface
    public interface ScoreFunctionCall<CC extends ScoreFunctionCreator<?>> {

        void callback(CC creator);
    }

    @FunctionalInterface
    public interface ScoreFunctionCreator<T extends EsAbstractConditionQuery> {
        void filter(final OperatorCall<T> cqLambda, final ScoreFunctionBuilder<?> scoreFunctionBuilder);

        void callback(CQ query);
    }

    @FunctionalInterface
    public interface ScoreFunctionCall<CC extends ScoreFunctionCreator<?>> {

        void callback(CC creator);
    }

    @FunctionalInterface
    public interface ScoreFunctionCreator<T extends EsAbstractConditionQuery> {
        void filter(final OperatorCall<T> cqLambda, final ScoreFunctionBuilder<?> scoreFunctionBuilder);

  /**
   * Returns a builder that creates immutable sorted multisets with an explicit comparator. If the
   * comparator has a more general type than the set being generated, such as creating a {@code
   * SortedMultiset<Integer>} with a {@code Comparator<Number>}, use the {@link Builder} constructor
   * instead.
   *
   * @throws NullPointerException if {@code comparator} is null
   */

        void callback(CQ query);
    }

    @FunctionalInterface
    public interface ScoreFunctionCall<CC extends ScoreFunctionCreator<?>> {

        void callback(CC creator);
    }

    @FunctionalInterface
    public interface ScoreFunctionCreator<T extends EsAbstractConditionQuery> {
        void filter(final OperatorCall<T> cqLambda, final ScoreFunctionBuilder<?> scoreFunctionBuilder);

    return new Builder<>(Ordering.natural());
  }

  /**
   * Returns a builder that creates immutable sorted maps with an explicit comparator. If the
   * comparator has a more general type than the map's keys, such as creating a {@code
   * SortedMap<Integer, String>} with a {@code Comparator<Number>}, use the {@link Builder}
   * constructor instead.
   *
   * @throws NullPointerException if {@code comparator} is null
   */

            throws ArtifactResolutionException, ArtifactNotFoundException {
        resolve(artifact, remoteRepositories, localRepository, null);
    }

    /**
     * ThreadCreator for creating daemon threads with fixed ThreadGroup-name.
     */
    @Deprecated
    static final class DaemonThreadCreator implements ThreadFactory {

In those cases, several of those entities could have the same ID, let's say `foo` (a user `foo`, a car `foo`, and a blog post `foo`).

So, to avoid ID collisions, when creating the JWT token for the user, you could prefix the value of the `sub` key, e.g. with `username:`. So, in this example, the value of `sub` could have been: `username:johndoe`.