Beautified error messages
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@ -19,7 +19,7 @@ sie in die Datenbank eingetragen und mit dem Buch verknüpft.
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func AddOrUpdateBook(book Book) (newBook Book, err error) {
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// Check if we have at least a booktitle when we're inserting a new book
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if book.Title == ""{
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if book.Title == "" {
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return Book{}, ErrBookTitleCannotBeEmpty{}
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}
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@ -37,10 +37,10 @@ func (err ErrNoUsername) Error() string {
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return fmt.Sprintf("you need to specify a username [user id: %d]", err.UserID)
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}
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// ErrNoUsernamePassword represents a "UsernameAlreadyExists" kind of error.
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type ErrNoUsernamePassword struct {}
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// ErrNoUsernamePassword represents a "NoUsernamePassword" kind of error.
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type ErrNoUsernamePassword struct{}
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// IsErrNoUsernamePassword checks if an error is a ErrUsernameExists.
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// IsErrNoUsernamePassword checks if an error is a ErrNoUsernamePassword.
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func IsErrNoUsernamePassword(err error) bool {
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_, ok := err.(ErrNoUsernamePassword)
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return ok
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@ -50,12 +50,12 @@ func (err ErrNoUsernamePassword) Error() string {
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return fmt.Sprintf("you need to specify a username and a password")
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}
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// ErrUserDoesNotExist represents a "UsernameAlreadyExists" kind of error.
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// ErrUserDoesNotExist represents a "UserDoesNotExist" kind of error.
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type ErrUserDoesNotExist struct {
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UserID int64
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}
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// IsErrUserDoesNotExist checks if an error is a ErrUsernameExists.
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// IsErrUserDoesNotExist checks if an error is a ErrUserDoesNotExist.
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func IsErrUserDoesNotExist(err error) bool {
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_, ok := err.(ErrUserDoesNotExist)
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return ok
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@ -65,10 +65,27 @@ func (err ErrUserDoesNotExist) Error() string {
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return fmt.Sprintf("this user does not exist [user id: %d]", err.UserID)
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}
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// ErrIDCannotBeZero represents a "UsernameAlreadyExists" kind of error.
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type ErrIDCannotBeZero struct {}
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// ErrCouldNotGetUserID represents a "ErrCouldNotGetUserID" kind of error.
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type ErrCouldNotGetUserID struct{}
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// IsErrIDCannotBeZero checks if an error is a ErrUsernameExists.
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// IsErrCouldNotGetUserID checks if an error is a ErrCouldNotGetUserID.
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func IsErrCouldNotGetUserID(err error) bool {
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_, ok := err.(ErrCouldNotGetUserID)
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return ok
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}
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func (err ErrCouldNotGetUserID) Error() string {
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return fmt.Sprintf("could not get user ID")
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}
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// ===================
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// Empty things errors
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// ===================
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// ErrIDCannotBeZero represents a "IDCannotBeZero" kind of error. Used if an ID (of something, not defined) is 0 where it should not.
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type ErrIDCannotBeZero struct{}
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// IsErrIDCannotBeZero checks if an error is a ErrIDCannotBeZero.
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func IsErrIDCannotBeZero(err error) bool {
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_, ok := err.(ErrIDCannotBeZero)
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return ok
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@ -79,9 +96,9 @@ func (err ErrIDCannotBeZero) Error() string {
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}
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// ErrAuthorCannotBeEmpty represents a "AuthorCannotBeEmpty" kind of error.
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type ErrAuthorCannotBeEmpty struct {}
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type ErrAuthorCannotBeEmpty struct{}
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// IsErrIDCannotBeZero checks if an error is a ErrUsernameExists.
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// IsErrAuthorCannotBeEmpty checks if an error is a ErrAuthorCannotBeEmpty.
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func IsErrAuthorCannotBeEmpty(err error) bool {
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_, ok := err.(ErrAuthorCannotBeEmpty)
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return ok
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@ -92,7 +109,7 @@ func (err ErrAuthorCannotBeEmpty) Error() string {
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}
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// ErrItemTitleCannotBeEmpty represents a "ErrItemTitleCannotBeEmpty" kind of error.
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type ErrItemTitleCannotBeEmpty struct {}
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type ErrItemTitleCannotBeEmpty struct{}
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// IsErrItemTitleCannotBeEmpty checks if an error is a ErrItemTitleCannotBeEmpty.
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func IsErrItemTitleCannotBeEmpty(err error) bool {
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@ -105,9 +122,9 @@ func (err ErrItemTitleCannotBeEmpty) Error() string {
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}
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// ErrBookTitleCannotBeEmpty represents a "ErrBookTitleCannotBeEmpty" kind of error.
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type ErrBookTitleCannotBeEmpty struct {}
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type ErrBookTitleCannotBeEmpty struct{}
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// ErrBookTitleCannotBeEmpty checks if an error is a ErrBookTitleCannotBeEmpty.
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// IsErrBookTitleCannotBeEmpty checks if an error is a ErrBookTitleCannotBeEmpty.
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func IsErrBookTitleCannotBeEmpty(err error) bool {
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_, ok := err.(ErrBookTitleCannotBeEmpty)
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return ok
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@ -117,21 +134,8 @@ func (err ErrBookTitleCannotBeEmpty) Error() string {
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return fmt.Sprintf("the book should at least have a title")
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}
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// ErrCouldNotGetUserID represents a "ErrCouldNotGetUserID" kind of error.
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type ErrCouldNotGetUserID struct {}
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// ErrBookTitleCannotBeEmpty checks if an error is a ErrBookTitleCannotBeEmpty.
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func IsErrCouldNotGetUserID(err error) bool {
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_, ok := err.(ErrCouldNotGetUserID)
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return ok
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}
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func (err ErrCouldNotGetUserID) Error() string {
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return fmt.Sprintf("could not get user ID")
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}
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// ErrNoPublisherName represents a "ErrNoPublisherName" kind of error.
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type ErrNoPublisherName struct {}
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type ErrNoPublisherName struct{}
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// IsErrNoPublisherName checks if an error is a ErrNoPublisherName.
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func IsErrNoPublisherName(err error) bool {
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@ -63,7 +63,7 @@ func AuthorAddOrUpdate(c echo.Context) error {
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if err != nil {
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if models.IsErrAuthorCannotBeEmpty(err) {
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return c.JSON(http.StatusBadRequest, models.Message{"Id cannot be 0"})
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return c.JSON(http.StatusBadRequest, models.Message{"Please provide at least a name and a lastname."})
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}
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return c.JSON(http.StatusInternalServerError, models.Message{"Error"})
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}
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