Add uploads; next up - user authentication on post

config/dev.exs

@@ -56,7 +56,7 @@ config :aggiedit, AggieditWeb.Endpoint,
 config :aggiedit, AggieditWeb.Endpoint,
   live_reload: [
     patterns: [
-      ~r"priv/static/.*(js|css|png|jpeg|jpg|gif|svg)$",
+      ~r"priv/static/[^uploads].*(js|css|png|jpeg|jpg|gif|svg)$",
       ~r"priv/gettext/.*(po)$",
       ~r"lib/aggiedit_web/(live|views)/.*(ex)$",
       ~r"lib/aggiedit_web/templates/.*(eex)$"

lib/aggiedit/rooms.ex

@@ -140,42 +140,25 @@ defmodule Aggiedit.Rooms do
   """
   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
+  def create_post(attrs, after_save \\ &{:ok, &1}) do
     %Post{}
     |> Post.changeset(attrs)
     |> Repo.insert()
+    |> post_saved(after_save)
   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
+  def update_post(%Post{} = post, attrs, after_save \\ &{:ok, &1}) do
     post
     |> Post.changeset(attrs)
     |> Repo.update()
+    |> post_saved(after_save)
   end
 
+  defp post_saved({:ok, post}, func) do
+    {:ok, _post} = func.(post)
+  end
+  defp post_saved(error, _fun), do: error
+
   @doc """
   Deletes a post.
 

lib/aggiedit/rooms/post.ex

@@ -1,6 +1,7 @@
 defmodule Aggiedit.Rooms.Post do
   use Ecto.Schema
   import Ecto.Changeset
+  alias Aggiedit.Repo
 
   schema "posts" do
     field :body, :string

lib/aggiedit/uploads/upload.ex

@@ -18,4 +18,9 @@ defmodule Aggiedit.Uploads.Upload do
     |> cast(attrs, [:file, :mime, :size])
     |> validate_required([:file, :mime, :size])
   end
+
+  def change_user(upload, user) do
+    change(upload)
+    |> put_assoc(:user, user)
+  end
 end

lib/aggiedit_web/endpoint.ex

@@ -20,7 +20,7 @@ defmodule AggieditWeb.Endpoint do
     at: "/",
     from: :aggiedit,
     gzip: false,
-    only: ~w(assets fonts images favicon.ico robots.txt)
+    only: ~w(assets fonts images favicon.ico robots.txt uploads)
 
   # Code reloading can be explicitly enabled under the
   # :code_reloader configuration of your endpoint.

lib/aggiedit_web/live/post_live/form_component.ex

@@ -2,6 +2,9 @@ defmodule AggieditWeb.PostLive.FormComponent do
   use AggieditWeb, :live_component
 
   alias Aggiedit.Rooms
+  alias Aggiedit.Rooms.Post
+  alias Aggiedit.Uploads.Upload
+  alias Aggiedit.Repo
 
   @impl true
   def update(%{post: post} = assigns, socket) do
@@ -10,7 +13,10 @@ defmodule AggieditWeb.PostLive.FormComponent do
     {:ok,
      socket
      |> assign(assigns)
-     |> assign(:changeset, changeset)}
+     |> assign(:changeset, changeset)
+     |> assign(:uploaded_files, [])
+     |> allow_upload(:upload, accept: ~w(.jpg .jpeg .png .gif), max_entries: 1)
+    }
   end
 
   @impl true
@@ -24,11 +30,35 @@ defmodule AggieditWeb.PostLive.FormComponent do
   end
 
   def handle_event("save", %{"post" => post_params}, socket) do
-    save_post(socket, socket.assigns.action, post_params)
+    socket
+    |> save_post(socket.assigns.action, post_params)
+  end
+
+  defp save_upload(socket, %Post{} = post) do
+    consume_uploaded_entries(socket, :upload, fn data, upload -> 
+      [extension | _] = MIME.extensions(upload.client_type)
+      filename = "#{upload.uuid}-#{extension}"
+      upload = %Upload{
+        file: filename,
+        size: upload.client_size,
+        mime: upload.client_type
+      }
+
+      dest = Path.join("priv/static/uploads", filename)
+      File.cp!(data.path, dest)
+
+      Repo.preload(post, :upload)
+      |> Post.change_upload(upload)
+      |> Repo.update
+      IO.puts(inspect(upload))
+
+      {:ok, upload}
+    end)
+    {:ok, post} 
   end
 
   defp save_post(socket, :edit, post_params) do
-    case Rooms.update_post(socket.assigns.post, post_params) do
+    case Rooms.update_post(socket.assigns.post, post_params, &save_upload(socket, &1)) do
       {:ok, _post} ->
         {:noreply,
          socket
@@ -41,7 +71,7 @@ defmodule AggieditWeb.PostLive.FormComponent do
   end
 
   defp save_post(socket, :new, post_params) do
-    case Rooms.create_post(post_params) do
+    case Rooms.create_post(post_params, &save_upload(socket, &1)) do
       {:ok, _post} ->
         {:noreply,
          socket

lib/aggiedit_web/live/post_live/form_component.html.heex

@@ -17,6 +17,16 @@
     <%= textarea f, :body %>
     <%= error_tag f, :body %>
 
+    <%= live_file_input @uploads.upload %>
+
+    <%= for upload <- @uploads.upload.entries do %>
+      <div class="row">
+        <div class="column">
+          <%= live_img_preview upload, height: 80 %>
+        </div>
+      </div>
+    <% end %>
+  
     <div>
       <%= submit "Save", phx_disable_with: "Saving..." %>
     </div>

lib/aggiedit_web/live/post_live/index.ex

@@ -3,6 +3,7 @@ defmodule AggieditWeb.PostLive.Index do
 
   alias Aggiedit.Rooms
   alias Aggiedit.Rooms.Post
+  alias Aggiedit.Repo
 
   @impl true
   def mount(_params, session, socket) do
@@ -25,9 +26,10 @@ defmodule AggieditWeb.PostLive.Index do
   end
 
   defp apply_action(socket, :new, _params) do
+    post = %Post{user_id: socket.assigns[:current_user].id}
     socket
     |> assign(:page_title, "New Post")
-    |> assign(:post, %Post{})
+    |> assign(:post, post)
   end
 
   defp apply_action(socket, :index, _params) do

priv/repo/migrations/20220406184635_create_uploads.exs

@@ -6,11 +6,10 @@ defmodule Aggiedit.Repo.Migrations.CreateUploads do
       add :file, :text
       add :mime, :text
       add :size, :integer
-      add :user_id, references(:users, on_delete: :nothing)
+
+      add :user_id, references(:users, on_delete: :delete_all)
 
       timestamps()
     end
-
-    create index(:uploads, [:user_id])
   end
 end