### Why use password hashing { #why-use-password-hashing }

If your database is stolen, the thief won't have your users' plaintext passwords, only the hashes.

So, the thief won't be able to try to use that password in another system (as many users use the same password everywhere, this would be dangerous).

## Install `pwdlib` { #install-pwdlib }

pwdlib is a great Python package to handle password hashes.

So, let's review it from that simplified point of view:

* The user types the `username` and `password` in the frontend, and hits `Enter`.
* The frontend (running in the user's browser) sends that `username` and `password` to a specific URL in our API (declared with `tokenUrl="token"`).
* The API checks that `username` and `password`, and responds with a "token" (we haven't implemented any of this yet).

	return u, nil
}

func (iamOS *IAMObjectStore) loadUserConcurrent(ctx context.Context, userType IAMUserType, users ...string) ([]UserIdentity, error) {
	userIdentities := make([]UserIdentity, len(users))
	g := errgroup.WithNErrs(len(users))

	for index := range users {
		g.Go(func() error {
			userName := path.Dir(users[index])
			user, err := iamOS.loadUserIdentity(ctx, userName, userType)

					return true
				}
			}
			if pset.Contains(policy) {
				users = append(users, u)
			}
			return true
		})
		cache.iamGroupPolicyMap.Range(func(g string, mp MappedPolicy) bool {
			pset := mp.policySet()
			if pset.Contains(policy) {
				groups = append(groups, g)
			}
			return true
		})
		if len(users) != 0 || len(groups) != 0 {
			return errPolicyInUse
		}

     * given user when the target object's ACL has local groups. Local groups
     * are not listed in a user's group membership (e.g. as represented by the
     * tokenGroups constructed attribute retrieved via LDAP).
     *
     * Domain groups nested inside a local group are currently not expanded. In
     * this case the key (SID) type will be SID_TYPE_DOM_GRP rather than
     * SID_TYPE_USER.

 */
public interface FessUser extends Serializable {

    /**
     * Gets the user's display name.
     * @return The user's name.
     */
    String getName();

    /**
     * Gets the user's assigned role names.
     * @return Array of role names.
     */
    String[] getRoleNames();

    /**
     * Gets the user's assigned group names.
     * @return Array of group names.
     */

            throw new PACDecodingException("Malformed PAC", e);
        }
    }

    /**
     * Returns the user's logon time.
     * @return the logon timestamp
     */
    public Date getLogonTime() {
        return this.logonTime;
    }

    /**
     * Returns the user's logoff time.
     * @return the logoff timestamp
     */
    public Date getLogoffTime() {
        return this.logoffTime;

	if err := DB.Model(&users).Association("Languages").Delete(users[0].Languages[0], users[1].Languages[1]); err != nil {
		t.Errorf("no error should happened when deleting language, but got %v", err)
	}

	AssertAssociationCount(t, users, "Languages", 2, "after delete")

	// Clear
	DB.Model(&users).Association("Languages").Clear()

)

func TestDistinct(t *testing.T) {
	users := []User{
		*GetUser("distinct", Config{}),
		*GetUser("distinct", Config{}),
		*GetUser("distinct", Config{}),
		*GetUser("distinct-2", Config{}),
		*GetUser("distinct-3", Config{}),
	}
	users[0].Age = 20

	if err := DB.Create(&users).Error; err != nil {
		t.Fatalf("errors happened when create users: %v", err)
	}

	var names []string

app.include_router(user_router, prefix="/users")
app.include_router(item_router, prefix="/items")

app.include_router(item_router, prefix="/users/{user_id}/items")


client = TestClient(app)


def test_get_users():
    """Check that /users returns expected data"""
    response = client.get("/users")
    assert response.status_code == 200, response.text