Add Articles

mix phx.gen.live Articles Article articles title:string\                                                            /Crucial/git/phoenix-liveview-book
  content:text url:string language:string\
  date:utc_datetime author_id:references:authors

lib/outlook/articles.ex

@@ -0,0 +1,104 @@
+defmodule Outlook.Articles do
+  @moduledoc """
+  The Articles context.
+  """
+
+  import Ecto.Query, warn: false
+  alias Outlook.Repo
+
+  alias Outlook.Articles.Article
+
+  @doc """
+  Returns the list of articles.
+
+  ## Examples
+
+      iex> list_articles()
+      [%Article{}, ...]
+
+  """
+  def list_articles do
+    Repo.all(Article)
+  end
+
+  @doc """
+  Gets a single article.
+
+  Raises `Ecto.NoResultsError` if the Article does not exist.
+
+  ## Examples
+
+      iex> get_article!(123)
+      %Article{}
+
+      iex> get_article!(456)
+      ** (Ecto.NoResultsError)
+
+  """
+  def get_article!(id), do: Repo.get!(Article, id)
+
+  @doc """
+  Creates a article.
+
+  ## Examples
+
+      iex> create_article(%{field: value})
+      {:ok, %Article{}}
+
+      iex> create_article(%{field: bad_value})
+      {:error, %Ecto.Changeset{}}
+
+  """
+  def create_article(attrs \\ %{}) do
+    %Article{}
+    |> Article.changeset(attrs)
+    |> Repo.insert()
+  end
+
+  @doc """
+  Updates a article.
+
+  ## Examples
+
+      iex> update_article(article, %{field: new_value})
+      {:ok, %Article{}}
+
+      iex> update_article(article, %{field: bad_value})
+      {:error, %Ecto.Changeset{}}
+
+  """
+  def update_article(%Article{} = article, attrs) do
+    article
+    |> Article.changeset(attrs)
+    |> Repo.update()
+  end
+
+  @doc """
+  Deletes a article.
+
+  ## Examples
+
+      iex> delete_article(article)
+      {:ok, %Article{}}
+
+      iex> delete_article(article)
+      {:error, %Ecto.Changeset{}}
+
+  """
+  def delete_article(%Article{} = article) do
+    Repo.delete(article)
+  end
+
+  @doc """
+  Returns an `%Ecto.Changeset{}` for tracking article changes.
+
+  ## Examples
+
+      iex> change_article(article)
+      %Ecto.Changeset{data: %Article{}}
+
+  """
+  def change_article(%Article{} = article, attrs \\ %{}) do
+    Article.changeset(article, attrs)
+  end
+end

lib/outlook/articles/article.ex

@@ -0,0 +1,24 @@
+defmodule Outlook.Articles.Article do
+  use Ecto.Schema
+  import Ecto.Changeset
+
+  alias Outlook.Authors.Author
+
+  schema "articles" do
+    field :content, :string
+    field :date, :utc_datetime
+    field :language, :string
+    field :title, :string
+    field :url, :string
+    belongs_to :author, Author
+
+    timestamps()
+  end
+
+  @doc false
+  def changeset(article, attrs) do
+    article
+    |> cast(attrs, [:title, :content, :url, :language, :date])
+    |> validate_required([:title, :content, :url, :language, :date])
+  end
+end

lib/outlook/authors/author.ex

@@ -2,11 +2,14 @@ defmodule Outlook.Authors.Author do
   use Ecto.Schema
   import Ecto.Changeset
 
+  alias Outlook.Articles.Article
+
   schema "authors" do
     field :description, :string
     field :homepage_name, :string
     field :homepage_url, :string
     field :name, :string
+    has_many :articles, Article
 
     timestamps()
   end