now you can actually create tags

app/controllers/tags_controller.rb

@@ -0,0 +1,48 @@
+class TagsController < ApplicationController
+  allow_unauthenticated_access only: %i[ index show ]
+  before_action :set_tag, only: %i[ show edit update destroy ]
+  def index
+    @tags = Tag.all
+  end
+
+  def show
+  end
+
+  def new
+    @tag = Tag.new
+  end
+
+  def create
+    @tag = Tag.new(tag_params)
+    if @tag.save
+      redirect_to @tag
+    else
+      render :new, status: :unprocessable_entity
+    end
+  end
+
+  def edit
+  end
+
+  def update
+    if @tag.update(tag_params)
+      redirect_to @tag
+    else
+      render :edit, status: :unprocessable_entity
+    end
+  end
+
+  def destroy
+    @tag.destroy
+    redirect_to tags_path
+  end
+
+  private
+    def set_tag
+      @tag = Tag.find(params[:id])
+    end
+
+    def tag_params
+      params.expect(tag: [ :name ])
+    end
+end

app/views/layouts/application.html.erb

@@ -34,6 +34,7 @@
       <%= link_to "Login", new_session_path unless authenticated? %>
       <%= link_to "Clips", clips_path %>
       <%= link_to "Categories", categories_path %>
+      <%= link_to "Tags", tags_path %>
     </nav>
     <main>
       <%= yield %>

app/views/tags/_form.html.erb

@@ -0,0 +1,10 @@
+<%= form_with model: tag do |form| %>
+  <div>
+    <%= form.label :name %>
+    <%= form.text_field :name %>
+  </div>
+
+  <div>
+    <%= form.submit %>
+  </div>
+<% end %>

app/views/tags/edit.html.erb

@@ -0,0 +1,4 @@
+<h1>Edit tag</h1>
+
+<%= render "form", tag: @tag %>
+<%= link_to "Cancel", @tag %>

app/views/tags/index.html.erb

@@ -0,0 +1,9 @@
+<h1>Tags</h1>
+
+<%= link_to "New tag", new_tag_path if authenticated? %>
+
+<ul id="tags">
+  <% @tags.each do |tag| %>
+    <li><%= link_to tag.name, tag %></li>
+  <% end %>
+</ul>

app/views/tags/new.html.erb

@@ -0,0 +1,4 @@
+<h1>New tag</h1>
+
+<%= render "form", tag: @tag %>
+<%= link_to "Cancel", tags_path %>

app/views/tags/show.html.erb

@@ -0,0 +1,9 @@
+<% cache @tag do %>
+  <h1><%= @tag.name %></h1>
+<% end %>
+
+<%= link_to "Back", tags_path%>
+<% if authenticated? %>
+  <%= link_to "Edit", edit_tag_path(@tag) %>
+  <%= button_to "Delete", @tag, method: :delete, data: { turbo_confirm: "Are you sure?" } %>
+<% end %>