ErrorTag

A component inspired by error_tag/3 that ships with mix phx.new in MyAppWeb.ErrorHelpers


Renders error messages if any exist regarding the given field.

Error Translation

Changeset errors are translated using the default error translator that ships with phoenix when generated with mix phx.new --no-gettext.

When using Gettext, you can use configuration to route all errors through the MyAppWeb.ErrorHelpers.translate_error/1 function generated by Phoenix, which utilizes Gettext. You need to provide a tuple with the module and the name of the function (as an atom) as follows:

config :surface, :components, [
  {Surface.Components.Form.ErrorTag, default_translator: {MyAppWeb.ErrorHelpers, :translate_error}}
]

There is also a translator prop which can be used on a case-by-case basis. It overrides the configuration.


# Public API

Name Description Type Values Default
form An identifier for the form.

:form
field An identifier for the associated field.

:any
class Classes to apply to each error tag <span>.

This can also be set via config, for example:

config :surface, :components, [
  {Surface.Components.Form.ErrorTag, default_class: "invalid-feedback"}
]

However, the prop overrides the config value if provided.

:css_class
translator A function that takes one argument {msg, opts} and returns the translated error message as a string. If not provided, falls back to Phoenix's default implementation.

This can also be set via config, for example:

config :surface, :components, [
  {Surface.Components.Form.ErrorTag, default_translator: {MyApp.Gettext, :translate_error}}
]
:fun
feedback_for If you changed the default ID on the input, provide it here. (Useful when there are multiple forms on the same page, each with an input of the same name. LiveView will exhibit buggy behavior without assigning separate id's to each.).

:string