added friends

app/assets/tailwind/application.css

@@ -4,3 +4,18 @@ h1 { @apply font-bold text-2xl; }
 h2 { @apply font-bold text-xl; }
 ul { @apply list-inside; }
 li { @apply list-disc; }
+
+.btn-new { @apply rounded-md px-3.5 py-2.5 bg-blue-600 hover:bg-blue-500 text-white block font-medium; }
+.btn-show { @apply w-full sm:w-auto text-center rounded-md px-3.5 py-2.5 bg-gray-100 hover:bg-gray-50 inline-block font-medium; }
+.btn-empty { @apply w-full sm:w-auto text-center mt-2 sm:mt-0 sm:ml-2 rounded-md px-3.5 py-2.5 bg-gray-100 hover:bg-gray-50 inline-block font-medium; }
+.btn-destroy { @apply w-full sm:w-auto rounded-md px-3.5 py-2.5 text-white bg-red-600 hover:bg-red-500 font-medium cursor-pointer; }
+
+.notice p#notice { @apply py-2 px-3 bg-green-50 mb-5 text-green-500 font-medium rounded-md inline-block; }
+
+form input[type="text"],
+form input[type="number"]
+{
+  @apply block shadow-sm rounded-md border px-3 py-2 mt-2 w-full;
+}
+
+form input[type="submit"] { @apply w-full sm:w-auto rounded-md px-3.5 py-2.5 bg-blue-600 hover:bg-blue-500 text-white inline-block font-medium cursor-pointer; }

app/controllers/friends_controller.rb

@@ -0,0 +1,56 @@
+class FriendsController < ApplicationController
+  before_action :set_friend, only: %i[ show edit update destroy ]
+
+  def index
+    @friends = Friend.all
+  end
+
+  def show
+  end
+
+  def new
+    @friend = Friend.new
+  end
+
+  def edit
+  end
+
+  def create
+    @friend = Friend.new(friend_params)
+
+    respond_to do |format|
+      if @friend.save
+        format.html { redirect_to friends_path, notice: "Der Freund wurde gespeichert." }
+      else
+        format.html { render :new, status: :unprocessable_entity }
+      end
+    end
+  end
+
+  def update
+    respond_to do |format|
+      if @friend.update(friend_params)
+        format.html { redirect_to friends_path, notice: "Der Freund wurde angepasst.", status: :see_other }
+      else
+        format.html { render :edit, status: :unprocessable_entity }
+      end
+    end
+  end
+
+  def destroy
+    @friend.destroy!
+
+    respond_to do |format|
+      format.html { redirect_to friends_path, notice: "Der Freund wurde gelöscht.", status: :see_other }
+    end
+  end
+
+  private
+    def set_friend
+      @friend = Friend.find(params.expect(:id))
+    end
+
+    def friend_params
+      params.expect(friend: [ :firstname, :lastname, :email, :telefon, :level ])
+    end
+end

app/helpers/friends_helper.rb

@@ -0,0 +1,2 @@
+module FriendsHelper
+end

app/models/friend.rb

@@ -0,0 +1,3 @@
+class Friend < ApplicationRecord
+  validates :firstname, :lastname, :email, :telefon, presence: true
+end

app/views/friends/_form.html.erb

@@ -0,0 +1,42 @@
+<%= form_with(model: friend, class: "contents") do |form| %>
+  <% if friend.errors.any? %>
+    <div id="error_explanation" class="bg-red-50 text-red-500 px-3 py-2 font-medium rounded-md mt-3">
+      <h2><%= pluralize(friend.errors.count, "error") %> prohibited this friend from being saved:</h2>
+
+      <ul class="list-disc ml-6">
+        <% friend.errors.each do |error| %>
+          <li><%= error.full_message %></li>
+        <% end %>
+      </ul>
+    </div>
+  <% end %>
+
+  <div class="my-5">
+    <%= form.label :firstname %>
+    <%= form.text_field :firstname, class: [{"border-gray-400 focus:outline-blue-600": friend.errors[:firstname].none?, "border-red-400 focus:outline-red-600": friend.errors[:firstname].any?}] %>
+  </div>
+
+  <div class="my-5">
+    <%= form.label :lastname %>
+    <%= form.text_field :lastname, class: [{"border-gray-400 focus:outline-blue-600": friend.errors[:lastname].none?, "border-red-400 focus:outline-red-600": friend.errors[:lastname].any?}] %>
+  </div>
+
+  <div class="my-5">
+    <%= form.label :email %>
+    <%= form.text_field :email, class: [{"border-gray-400 focus:outline-blue-600": friend.errors[:email].none?, "border-red-400 focus:outline-red-600": friend.errors[:email].any?}] %>
+  </div>
+
+  <div class="my-5">
+    <%= form.label :telefon %>
+    <%= form.text_field :telefon, class: [{"border-gray-400 focus:outline-blue-600": friend.errors[:telefon].none?, "border-red-400 focus:outline-red-600": friend.errors[:telefon].any?}] %>
+  </div>
+
+  <div class="my-5">
+    <%= form.label :level %>
+    <%= form.number_field :level, class: [{"border-gray-400 focus:outline-blue-600": friend.errors[:level].none?, "border-red-400 focus:outline-red-600": friend.errors[:level].any?}] %>
+  </div>
+
+  <div class="inline">
+    <%= form.submit %>
+  </div>
+<% end %>

app/views/friends/_friend.html.erb

@@ -0,0 +1,22 @@
+<div id="<%= dom_id friend %>" class="w-full sm:w-auto my-5 space-y-5">
+  <div>
+    <strong class="block font-medium mb-1">Firstname:</strong>
+    <%= friend.firstname %>
+  </div>
+  <div>
+    <strong class="block font-medium mb-1">Lastname:</strong>
+    <%= friend.lastname %>
+  </div>
+  <div>
+    <strong class="block font-medium mb-1">Email:</strong>
+    <%= friend.email %>
+  </div>
+  <div>
+    <strong class="block font-medium mb-1">Telefon:</strong>
+    <%= friend.telefon %>
+  </div>
+  <div>
+    <strong class="block font-medium mb-1">Level:</strong>
+    <%= friend.level %>
+  </div>
+</div>

app/views/friends/edit.html.erb

@@ -0,0 +1,10 @@
+<% content_for :title, "Editing friend" %>
+
+<div class="md:w-2/3 w-full">
+  <h1 class="font-bold text-4xl">Freund bearbeiten</h1>
+
+  <%= render "form", friend: @friend %>
+
+  <%= link_to "Anzeigen", @friend, class: "btn-show" %>
+  <%= link_to "Liste", friends_path, class: "btn-show" %>
+</div>

app/views/friends/index.html.erb

@@ -0,0 +1,29 @@
+<% content_for :title, "Freunde" %>
+
+<div class="w-full notice">
+  <% if notice.present? %>
+    <p id="notice"><%= notice %></p>
+  <% end %>
+
+  <div class="flex justify-between items-center">
+    <h1 class="font-bold text-4xl">Freunde</h1>
+    <%= link_to "Neuer Freund", new_friend_path, class: "btn-new" %>
+  </div>
+
+  <div id="friends" class="min-w-full divide-y divide-gray-200 space-y-5">
+    <% if @friends.any? %>
+      <% @friends.each do |friend| %>
+        <div class="flex flex-col sm:flex-row justify-between items-center pb-5 sm:pb-0">
+          <%= render friend %>
+          <div class="w-full sm:w-auto flex flex-col sm:flex-row space-x-2 space-y-2">
+            <%= link_to "Anzeigen", friend, class: "btn-show" %>
+            <%= link_to "Bearbeiten", edit_friend_path(friend), class: "btn-show" %>
+            <%= button_to "Löschen", friend, method: :delete, class: "btn-destroy", data: { turbo_confirm: "Sind Sie sich sicher?" } %>
+          </div>
+        </div>
+      <% end %>
+    <% else %>
+      <p class="text-center my-10">Bisher kein Freund eingegeben.</p>
+    <% end %>
+  </div>
+</div>

app/views/friends/new.html.erb

@@ -0,0 +1,7 @@
+<% content_for :title, "Neuer Freund" %>
+
+<div class="md:w-2/3 w-full">
+  <h1 class="font-bold text-4xl">Neuer Freund</h1>
+  <%= render "form", friend: @friend %>
+  <%= link_to "Back to friends", friends_path, class: "btn-empty" %>
+</div>

app/views/friends/show.html.erb

@@ -0,0 +1,17 @@
+<% content_for :title, "Freund anzeigen" %>
+
+<div class="md:w-2/3 w-full">
+  <% if notice.present? %>
+    <p class="py-2 px-3 bg-green-50 mb-5 text-green-500 font-medium rounded-md inline-block" id="notice"><%= notice %></p>
+  <% end %>
+
+  <h1 class="font-bold text-4xl">Freund anzeigen</h1>
+
+  <%= render @friend %>
+
+  <%= link_to "Bearbeiten", edit_friend_path(@friend), class: "btn-show" %>
+  <%= link_to "Liste anzeigen", friends_path, class: "btn-show" %>
+  <%= button_to "Löschen", @friend, method: :delete, form_class: "sm:inline-block mt-2 sm:mt-0 sm:ml-2",
+                class: "btn-destroy",
+                data: { turbo_confirm: "Are you sure?" } %>
+</div>

config/routes.rb

@@ -9,5 +9,7 @@ Rails.application.routes.draw do
 
   get "pages/:page" => "welcome#pages", as: :pages
 
+  resources :friends
+
   root "welcome#index"
 end

db/migrate/20251119093322_create_friends.rb

@@ -0,0 +1,12 @@
+class CreateFriends < ActiveRecord::Migration[8.0]
+  def change
+    create_table :friends do |t|
+      t.string :firstname, null: false
+      t.string :lastname, null: false
+      t.string :email, null: false
+      t.string :telefon, null: false
+      t.integer :level, default: 5
+      t.timestamps
+    end
+  end
+end

db/schema.rb

@@ -10,5 +10,14 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema[8.0].define(version: 0) do
+ActiveRecord::Schema[8.0].define(version: 2025_11_19_093322) do
+  create_table "friends", force: :cascade do |t|
+    t.string "firstname", null: false
+    t.string "lastname", null: false
+    t.string "email", null: false
+    t.string "telefon", null: false
+    t.integer "level", default: 5
+    t.datetime "created_at", null: false
+    t.datetime "updated_at", null: false
+  end
 end