MishkaGervaz.Form.Types.Field.Nested (MishkaGervaz v0.0.6)

Nested / embedded form field type, used for inputs_for and constrained-map columns.

Example

field :seo_tags, :nested do
  ui do
    add_label "+ Add SEO tag"
    remove_label "Remove"
  end

  nested_field :tag do
    ui do placeholder "meta, link, script" end
  end

  nested_field :content, :textarea do
    ui do rows 3 end
  end
end

Sub-field values are cast on the way in

parse_params/2 casts each row by its sub-field's declared type before the value reaches the changeset:

Sub-field type	Cast
`:checkbox`, `:toggle`	`"true"` / `"on"` / `"1"` to `true`; `"false"` / `"off"` / `"0"` / `""` to `false`
`:number`	integer, then float
`:key_map`	each declared key cast, then blanks dropped
`:key_list`	each row cast and pruned, then empty rows dropped

Anything it cannot make sense of is left exactly as it came, and a value that is already the right type passes through untouched.

See MishkaGervaz.Form.Behaviours.FieldType and MishkaGervaz.Form.Types.Field.