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ami

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Package containing all AMI Models shared between micro-services.

Retired package: Security issue - Retiring
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ami lib ami unit.ex
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lib/ami/unit.ex 

defmodule Ami.Unit do

  use Ecto.Schema



  import Ecto.{

    Query,

    Changeset

  }



  alias Ami.{

    Repo,

    Course,

    Lesson,

    UnitLesson

  }



  schema "units" do

    @timestamps_opts [type: :naive_datetime_usec]

    

    field(:title, :string)

    field(:description, :string)

    field(:grade_value, :integer)

    field(:position, :integer)

    field(:created_at, :utc_datetime_usec)

    field(:updated_at, :utc_datetime_usec)



    belongs_to(:course, Course)



    # has_many(:lessons, Lesson)

    has_many(:unit_lessons, UnitLesson, on_delete: :delete_all)

    has_many(:lessons, through: [:unit_lessons, :lesson])

  end



  def completed?(unit, enrollment) do

    Enum.all?(unit.lessons, &(Lesson.completed?(&1, enrollment) == true))

  end



  def changeset(%__MODULE__{} = unit, params \\ %{}) do

    unit

    |> cast(params, [

      :course_id,

      :title,

      :description,

      :grade_value,

      :position,

      :created_at,

      :updated_at

    ])

    |> validate_required([

      :title,

      :grade_value

    ])

  end



  def update_position(id, position) do

    Repo.get!(__MODULE__, id)

    |> change(%{position: position})

    |> Repo.update()

  end

  

end