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A foundation for building Elixir Phoenix apps — SaaS, social networks, ERP systems, marketplaces, and more
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Files
lib/modules/publishing/schemas/publishing_version.ex
defmodule PhoenixKit.Modules.Publishing.PublishingVersion do
@moduledoc """
Schema for publishing post versions.
Each post can have multiple versions (v1, v2, etc.). Each version contains
per-language content rows in `PublishingContent`.
## Status Flow
- `draft` - Version is being edited
- `published` - Version is live
- `archived` - Version replaced by newer one
## Data JSONB Keys
- `created_from` - Source version number this was created from
- `notes` - Version notes/changelog
"""
use Ecto.Schema
import Ecto.Changeset
@primary_key {:uuid, UUIDv7, autogenerate: true}
@foreign_key_type UUIDv7
@type t :: %__MODULE__{
uuid: UUIDv7.t() | nil,
post_uuid: UUIDv7.t(),
version_number: integer(),
status: String.t(),
created_by_uuid: UUIDv7.t() | nil,
data: map(),
inserted_at: DateTime.t() | nil,
updated_at: DateTime.t() | nil
}
schema "phoenix_kit_publishing_versions" do
field :version_number, :integer
field :status, :string, default: "draft"
field :data, :map, default: %{}
belongs_to :post, PhoenixKit.Modules.Publishing.PublishingPost,
foreign_key: :post_uuid,
references: :uuid,
type: UUIDv7
belongs_to :created_by, PhoenixKit.Users.Auth.User,
foreign_key: :created_by_uuid,
references: :uuid,
type: UUIDv7
has_many :contents, PhoenixKit.Modules.Publishing.PublishingContent,
foreign_key: :version_uuid
timestamps(type: :utc_datetime)
end
@doc """
Changeset for creating or updating a publishing version.
"""
def changeset(version, attrs) do
version
|> cast(attrs, [
:post_uuid,
:version_number,
:status,
:created_by_uuid,
:data
])
|> validate_required([:post_uuid, :version_number, :status])
|> validate_inclusion(:status, ["draft", "published", "archived"])
|> validate_number(:version_number, greater_than: 0)
|> unique_constraint([:post_uuid, :version_number],
name: :idx_publishing_versions_post_number
)
|> foreign_key_constraint(:post_uuid, name: :fk_publishing_versions_post)
|> foreign_key_constraint(:created_by_uuid, name: :fk_publishing_versions_created_by)
end
# Data JSONB accessors
@doc "Returns the source version number this was created from."
def get_created_from(%__MODULE__{data: data}), do: Map.get(data, "created_from")
@doc "Returns version notes."
def get_notes(%__MODULE__{data: data}), do: Map.get(data, "notes")
end