add rest just for files

Author: DecafMango

lib/backend/files/file.ex

@@ -0,0 +1,20 @@
+defmodule Backend.Files.File do
+  @moduledoc """
+  PostgreSQL schema: `File`
+  > Managed by *Ecto ORM*
+  """
+  use Ecto.Schema
+  import Ecto.Changeset
+
+  @derive {Jason.Encoder, only: [:id, :name, :content]}
+  schema "files" do
+    field :name, :string
+    field :content, :string
+  end
+
+  def changeset(file, attrs) do
+    file
+    |> cast(attrs, [:name, :content], empty_values: [:content])
+    |> validate_required([:name])
+  end
+end

lib/backend/files/files.ex

@@ -0,0 +1,26 @@
+defmodule Backend.Files do
+  alias Backend.Repo
+  alias Backend.Files.File
+
+  def get_file(id) do
+    Repo.get(File, id)
+  end
+
+  def create_file(attrs \\ %{}) do
+    %File{}
+    |> File.changeset(attrs)
+    |> Repo.insert()
+  end
+
+  def save_file(file) do
+    file
+    |> File.changeset(%{})
+    |> Repo.update()
+  end
+
+  def delete_file(file) do
+    file
+    |> Repo.delete()
+  end
+
+end

lib/backend/schemas/file.ex

@@ -0,0 +1,48 @@
+defmodule BackendWeb.FileController do
+  alias Backend.Files
+  use BackendWeb, :controller
+
+  def get_file(conn, %{"id" => id}) do
+    file = Files.get_file(id)
+
+    case file do
+      nil -> conn
+            |> put_status(404)
+            |> json(%{"message" => "File with id " <> id <> " does not exist"})
+      _ -> conn
+          |> put_status(200)
+          |> json(file)
+    end
+  end
+
+  def create_file(conn, %{"name" => name}) do
+    case Files.create_file(%{"name" => name, "content" => ""}) do
+      {:ok, file} -> conn
+                    |> put_status(201)
+                    |> json(file)
+      {:error, _} -> conn
+                    |> put_status(500)
+                    |> json(%{"message" => "Error occured"})
+    end
+  end
+
+  def delete_file(conn, %{"id" => id}) do
+    file = Files.get_file(id)
+
+    if file == nil do
+      conn
+            |> put_status(404)
+            |> json(%{"message" => "File with id " <> id <> " not found"})
+    else
+      case Files.delete_file(file) do
+        {:ok, _} -> conn
+                  |> put_status(200)
+                  |> json(%{"message" => "File with id " <> id <> " has been deleted successfully"})
+        {:error, _} -> conn
+                      |> put_status(500)
+                      |> json(%{"message" => "Error occured"})
+      end
+    end
+  end
+
+end

lib/backend/schemas/user.ex

@@ -6,7 +6,7 @@ defmodule BackendWeb.Router do
     plug :fetch_session
     plug :fetch_live_flash
     plug :put_root_layout, html: {BackendWeb.Layouts, :root}
-    plug :protect_from_forgery
+    # plug :protect_from_forgery
     plug :put_secure_browser_headers
   end
 
@@ -18,6 +18,10 @@ defmodule BackendWeb.Router do
     pipe_through :browser
 
     get "/", PageController, :home
+
+    get "/file/:id", FileController, :get_file
+    post "/file", FileController, :create_file
+    delete "/file/:id", FileController, :delete_file
   end
 
   # Other scopes may use custom stacks.

lib/backend_web/controllers/file_controller.ex

@@ -19,7 +19,7 @@
   "finch": {:hex, :finch, "0.19.0", "c644641491ea854fc5c1bbaef36bfc764e3f08e7185e1f084e35e0672241b76d", [:mix], [{:mime, "~> 1.0 or ~> 2.0", [hex: :mime, repo: "hexpm", optional: false]}, {:mint, "~> 1.6.2 or ~> 1.7", [hex: :mint, repo: "hexpm", optional: false]}, {:nimble_options, "~> 0.4 or ~> 1.0", [hex: :nimble_options, repo: "hexpm", optional: false]}, {:nimble_pool, "~> 1.1", [hex: :nimble_pool, repo: "hexpm", optional: false]}, {:telemetry, "~> 0.4 or ~> 1.0", [hex: :telemetry, repo: "hexpm", optional: false]}], "hexpm", "fc5324ce209125d1e2fa0fcd2634601c52a787aff1cd33ee833664a5af4ea2b6"},
   "floki": {:hex, :floki, "0.36.3", "1102f93b16a55bc5383b85ae3ec470f82dee056eaeff9195e8afdf0ef2a43c30", [:mix], [], "hexpm", "fe0158bff509e407735f6d40b3ee0d7deb47f3f3ee7c6c182ad28599f9f6b27a"},
   "gettext": {:hex, :gettext, "0.26.2", "5978aa7b21fada6deabf1f6341ddba50bc69c999e812211903b169799208f2a8", [:mix], [{:expo, "~> 0.5.1 or ~> 1.0", [hex: :expo, repo: "hexpm", optional: false]}], "hexpm", "aa978504bcf76511efdc22d580ba08e2279caab1066b76bb9aa81c4a1e0a32a5"},
-  "heroicons": {:git, "https://github.com/tailwindlabs/heroicons.git", "88ab3a0d790e6a47404cba02800a6b25d2afae50", [tag: "v2.1.1", sparse: "optimized"]},
+  "heroicons": {:git, "https://github.com/tailwindlabs/heroicons.git", "88ab3a0d790e6a47404cba02800a6b25d2afae50", [tag: "v2.1.1", sparse: "optimized", depth: 1]},
   "hpax": {:hex, :hpax, "1.0.0", "28dcf54509fe2152a3d040e4e3df5b265dcb6cb532029ecbacf4ce52caea3fd2", [:mix], [], "hexpm", "7f1314731d711e2ca5fdc7fd361296593fc2542570b3105595bb0bc6d0fad601"},
   "jason": {:hex, :jason, "1.4.4", "b9226785a9aa77b6857ca22832cffa5d5011a667207eb2a0ad56adb5db443b8a", [:mix], [{:decimal, "~> 1.0 or ~> 2.0", [hex: :decimal, repo: "hexpm", optional: true]}], "hexpm", "c5eb0cab91f094599f94d55bc63409236a8ec69a21a67814529e8d5f6cc90b3b"},
   "libgraph": {:hex, :libgraph, "0.16.0", "3936f3eca6ef826e08880230f806bfea13193e49bf153f93edcf0239d4fd1d07", [:mix], [], "hexpm", "41ca92240e8a4138c30a7e06466acc709b0cbb795c643e9e17174a178982d6bf"},

lib/backend_web/router.ex

@@ -3,8 +3,8 @@ defmodule Backend.Repo.Migrations.AddFile do
 
   def change do
     create table(:files) do
-      add :filename, :string
-      add :created_at, :date
+      add :name, :string, null: false
+      add :content, :string
     end
   end
 end