feat: Add Post table

Author: rogerpinho

lib/brasil_em_dados/accounts/user_token.ex

@@ -134,6 +134,7 @@ defmodule BrasilEmDados.Accounts.UserToken do
   end
 
   def user_and_contexts_query(user, [_ | _] = contexts) do
-    from t in BrasilEmDados.Accounts.UserToken, where: t.user_id == ^user.id and t.context in ^contexts
+    from t in BrasilEmDados.Accounts.UserToken,
+      where: t.user_id == ^user.id and t.context in ^contexts
   end
 end

lib/brasil_em_dados/blog.ex

@@ -0,0 +1,104 @@
+defmodule BrasilEmDados.Blog do
+  @moduledoc """
+  The Blog context.
+  """
+
+  import Ecto.Query, warn: false
+  alias BrasilEmDados.Repo
+
+  alias BrasilEmDados.Blog.Post
+
+  @doc """
+  Returns the list of posts.
+
+  ## Examples
+
+      iex> list_posts()
+      [%Post{}, ...]
+
+  """
+  def list_posts do
+    Repo.all(Post)
+  end
+
+  @doc """
+  Gets a single post.
+
+  Raises `Ecto.NoResultsError` if the Post does not exist.
+
+  ## Examples
+
+      iex> get_post!(123)
+      %Post{}
+
+      iex> get_post!(456)
+      ** (Ecto.NoResultsError)
+
+  """
+  def get_post!(id), do: Repo.get!(Post, id)
+
+  @doc """
+  Creates a post.
+
+  ## Examples
+
+      iex> create_post(%{field: value})
+      {:ok, %Post{}}
+
+      iex> create_post(%{field: bad_value})
+      {:error, %Ecto.Changeset{}}
+
+  """
+  def create_post(attrs \\ %{}) do
+    %Post{}
+    |> Post.changeset(attrs)
+    |> Repo.insert()
+  end
+
+  @doc """
+  Updates a post.
+
+  ## Examples
+
+      iex> update_post(post, %{field: new_value})
+      {:ok, %Post{}}
+
+      iex> update_post(post, %{field: bad_value})
+      {:error, %Ecto.Changeset{}}
+
+  """
+  def update_post(%Post{} = post, attrs) do
+    post
+    |> Post.changeset(attrs)
+    |> Repo.update()
+  end
+
+  @doc """
+  Deletes a post.
+
+  ## Examples
+
+      iex> delete_post(post)
+      {:ok, %Post{}}
+
+      iex> delete_post(post)
+      {:error, %Ecto.Changeset{}}
+
+  """
+  def delete_post(%Post{} = post) do
+    Repo.delete(post)
+  end
+
+  @doc """
+  Returns an `%Ecto.Changeset{}` for tracking post changes.
+
+  ## Examples
+
+      iex> change_post(post)
+      %Ecto.Changeset{data: %Post{}}
+
+  """
+  def change_post(%Post{} = post, attrs \\ %{}) do
+    Post.changeset(post, attrs)
+  end
+end

lib/brasil_em_dados/blog/post.ex

@@ -0,0 +1,20 @@
+defmodule BrasilEmDados.Blog.Post do
+  use Ecto.Schema
+  import Ecto.Changeset
+
+  schema "posts" do
+    field :body, :string
+    field :title, :string
+    field :slug, :string
+    field :user_id, :id
+
+    timestamps()
+  end
+
+  @doc false
+  def changeset(post, attrs) do
+    post
+    |> cast(attrs, [:title, :slug, :body, :user_id])
+    |> validate_required([:title, :body, :slug, :user_id])
+  end
+end

mix.exs

@@ -48,7 +48,7 @@ defmodule BrasilEmDados.MixProject do
       {:gettext, "~> 0.11"},
       {:jason, "~> 1.0"},
       {:plug_cowboy, "~> 2.0"},
-      {:phx_gen_auth, "~> 0.4.0", only: [:dev], runtime: false},
+      {:phx_gen_auth, "~> 0.4.0", only: [:dev], runtime: false}
     ]
   end
 

priv/repo/migrations/20210210235849_create_posts.exs

@@ -0,0 +1,17 @@
+defmodule BrasilEmDados.Repo.Migrations.CreatePosts do
+  use Ecto.Migration
+
+  def change do
+    create table(:posts) do
+      add :title, :string, null: false
+      add :slug, :string, null: false
+      add :body, :text, null: false
+      add :user_id, references(:users, on_delete: :nothing)
+
+      timestamps()
+    end
+
+    create index(:posts, [:user_id])
+    create index(:posts, [:slug])
+  end
+end