# `Masu.Write.Change`
[🔗](https://github.com/hattoriai/masu/blob/v0.7.0/lib/masu/write.ex#L117)

A change of a row in a `Masu.Write`:

  * `index` - its place in the write;
  * `id` - the row's id (nil for a new row);
  * `row` - the row, as the grid's source reads it now (nil for a new
    row; for `:restore`, the row as it was deleted);
  * `params` - for `:update` and `:create`, the values by the
    columns' fields, as strings, as the browser sends them
    (`%{"total" => "11.50"}`), which a changeset casts as it does a
    form's; an empty value is nil;
  * `keys` - the keys of the columns the params are of;
  * `before` - for `:update`, the value of each cell that the person
    saw, by the column's key.

# `t`

```elixir
@type t() :: %Masu.Write.Change{
  before: %{required(String.t()) => term()},
  id: term(),
  index: non_neg_integer() | nil,
  keys: [String.t()],
  params: %{required(String.t()) => term()},
  row: term()
}
```

---

*Consult [api-reference.md](api-reference.md) for complete listing*