EctoRange (ecto_range v0.3.0)

EctoRange is a tiny library that provides Ecto custom types for all Postgres Range types.

The main design goal of EctoRange is to be easy to use with native Elixir types, while providing the full flexibility of Postgres Range types inside of Ecto.

Usage

EctoRange provides custom types, and can be used like any other Ecto type.

defmodule MyApp.Repo.Migrations.AddRange do
  use Ecto.Migration

  def change do
    create table(:my_table) do
      add :name, :string
      add :range, :daterange
    end
  end
end

defmodule MyApp.Table do
  use Ecto.Schema

  import Ecto.Changeset

  schema "my_table" do
    field(:name, :string)
    field(:range, EctoRange.Date)
  end

  def changeset(table, params) do
    table
    |> cast(params, [:name, :range])
    |> validate_required([:name, :range])
  end
end

iex> alias MyApp.Table

iex> range = Date.range(~D[1989-09-22], ~D[2021-03-01])

iex> cs = Table.changeset(%Table{}, %{name: "table", range: range})

iex> cs.changes
%Ecto.Changeset{
  changes: %{
    range: %Postgrex.Range{
      lower: ~D[1989-09-22],
      upper: ~D[2021-03-01],
      lower_inclusive: true,
      upper_inclusive: true
    },
    name: "name"
  },
  data: %MyApp.Table{id: nil, name: nil, range: nil},
  params: %{
    "range" => Date.range(~D[1989-09-22], ~D[2021-03-01]),
    "name" => "name"
  },
  valid?: true
}

Installation

If available in Hex, the package can be installed by adding ectorange to your list of dependencies in mix.exs:

def deps do
  [
    {:ecto_range, "~> 0.1.0"}
  ]
end

Documentation can be generated with ExDoc and published on HexDocs. Once published, the docs can be found at https://hexdocs.pm/ectorange.

Alternative libraries

If you're unhappy with the feature setEctoRange, there are some alternative libraries that provide similar functionality

• ecto_date_time_range
• pg_ranges