19 lines
495 B
Go
19 lines
495 B
Go
package models
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import "fmt"
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// ErrUsernameExists represents a "UsernameAlreadyExists" kind of error.
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type ErrUsernameExists struct {
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UserID int64
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Username string
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}
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// IsErrUsernameExists checks if an error is a ErrUsernameExists.
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func IsErrUsernameExists(err error) bool {
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_, ok := err.(ErrUsernameExists)
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return ok
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}
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func (err ErrUsernameExists) Error() string {
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return fmt.Sprintf("a user with this username does already exist [user id: %d, username: %s]", err.UserID, err.Username)
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} |