13 files changed, 187 insertions, 0 deletions
diff --git a/app/controllers/categories_controller.rb b/app/controllers/categories_controller.rb
new file mode 100644
index 0000000..5fc872b
--- /dev/null
+++ b/app/controllers/categories_controller.rb
@@ -0,0 +1,77 @@
+class CategoriesController < ApplicationController
+  before_action :set_category, only: %i[ show edit update destroy ]
+  before_action :require_admin, only: %i[ new create update destroy ]
+
+  # GET /categories or /categories.json
+  def index
+    @categories = Category.all
+  end
+
+  # GET /categories/1 or /categories/1.json
+  def show
+  end
+
+  # GET /categories/new
+  def new
+    @category = Category.new
+  end
+
+  # GET /categories/1/edit
+  def edit
+  end
+
+  # POST /categories or /categories.json
+  def create
+    @category = Category.new(category_params)
+
+    respond_to do |format|
+      if @category.save
+        format.html { redirect_to @category, notice: "Category was successfully created." }
+        format.json { render :show, status: :created, location: @category }
+      else
+        format.html { render :new, status: :unprocessable_entity }
+        format.json { render json: @category.errors, status: :unprocessable_entity }
+      end
+    end
+  end
+
+  # PATCH/PUT /categories/1 or /categories/1.json
+  def update
+    respond_to do |format|
+      if @category.update(category_params)
+        format.html { redirect_to @category, notice: "Category was successfully updated." }
+        format.json { render :show, status: :ok, location: @category }
+      else
+        format.html { render :edit, status: :unprocessable_entity }
+        format.json { render json: @category.errors, status: :unprocessable_entity }
+      end
+    end
+  end
+
+  # DELETE /categories/1 or /categories/1.json
+  def destroy
+    @category.destroy!
+
+    respond_to do |format|
+      format.html { redirect_to categories_path, status: :see_other, notice: "Category was successfully destroyed." }
+      format.json { head :no_content }
+    end
+  end
+
+  private
+    # Use callbacks to share common setup or constraints between actions.
+    def set_category
+      @category = Category.find(params.expect(:id))
+    end
+
+    # Only allow a list of trusted parameters through.
+    def category_params
+      params.expect(category: [ :name, :colour, :badge_foreground_colour ])
+    end
+
+    def require_admin
+      unless Current.session.user&.is_admin
+        redirect_to root_path, notice: "You must be an admin to perform this action."
+      end
+    end
+end
diff --git a/app/helpers/categories_helper.rb b/app/helpers/categories_helper.rb
new file mode 100644
index 0000000..e06f315
--- /dev/null
+++ b/app/helpers/categories_helper.rb
@@ -0,0 +1,2 @@
+module CategoriesHelper
+end
diff --git a/app/models/category.rb b/app/models/category.rb
new file mode 100644
index 0000000..296e7d6
--- /dev/null
+++ b/app/models/category.rb
@@ -0,0 +1,3 @@
+class Category < ApplicationRecord
+  validates :name, presence: true, uniqueness: true
+end
diff --git a/app/models/resource_type.rb b/app/models/resource_type.rb
index 066a734..414e71e 100644
--- a/app/models/resource_type.rb
+++ b/app/models/resource_type.rb
@@ -1,3 +1,4 @@
 class ResourceType < ApplicationRecord
   has_many :pdfresources
+  validates :name, presence: true, uniqueness: true
 end
diff --git a/app/views/categories/_category.html.erb b/app/views/categories/_category.html.erb
new file mode 100644
index 0000000..3c51d8f
--- /dev/null
+++ b/app/views/categories/_category.html.erb
@@ -0,0 +1,17 @@
+<div id="<%= dom_id category %>">
+  <p class="my-5">
+    <strong class="block font-medium mb-1">Name:</strong>
+    <%= category.name %>
+  </p>
+
+  <p class="my-5">
+    <strong class="block font-medium mb-1">Colour:</strong>
+    <%= category.colour %>
+  </p>
+
+  <p class="my-5">
+    <strong class="block font-medium mb-1">Badge foreground colour:</strong>
+    <%= category.badge_foreground_colour %>
+  </p>
+
+</div>
diff --git a/app/views/categories/_category.json.jbuilder b/app/views/categories/_category.json.jbuilder
new file mode 100644
index 0000000..c0950c8
--- /dev/null
+++ b/app/views/categories/_category.json.jbuilder
@@ -0,0 +1,2 @@
+json.extract! category, :id, :name, :colour, :badge_foreground_colour, :created_at, :updated_at
+json.url category_url(category, format: :json)
diff --git a/app/views/categories/_form.html.erb b/app/views/categories/_form.html.erb
new file mode 100644
index 0000000..fec6c3b
--- /dev/null
+++ b/app/views/categories/_form.html.erb
@@ -0,0 +1,32 @@
+<%= form_with(model: category, class: "contents") do |form| %>
+  <% if category.errors.any? %>
+    <div id="error_explanation" class="bg-red-50 text-red-500 px-3 py-2 font-medium rounded-lg mt-3">
+      <h2><%= pluralize(category.errors.count, "error") %> prohibited this category from being saved:</h2>
+
+      <ul>
+        <% category.errors.each do |error| %>
+          <li><%= error.full_message %></li>
+        <% end %>
+      </ul>
+    </div>
+  <% end %>
+
+  <div class="my-5">
+    <%= required_label_tag(form, :name) %>
+    <%= form.text_field :name, class: "block shadow rounded-md border border-gray-400 outline-none px-3 py-2 mt-2 w-full" %>
+  </div>
+
+  <div class="my-5">
+    <%= form.label :colour, class: "font-bold" %>
+    <%= form.text_field :colour, class: "block shadow rounded-md border border-gray-400 outline-none px-3 py-2 mt-2 w-full" %>
+  </div>
+
+  <div class="my-5">
+    <%= form.label :badge_foreground_colour, class: "font-bold" %>
+    <%= form.text_field :badge_foreground_colour, class: "block shadow rounded-md border border-gray-400 outline-none px-3 py-2 mt-2 w-full" %>
+  </div>
+
+  <div class="inline">
+    <%= form.submit class: "rounded-lg py-3 px-5 bg-blue-600 text-white inline-block font-medium cursor-pointer" %>
+  </div>
+<% end %>
diff --git a/app/views/categories/edit.html.erb b/app/views/categories/edit.html.erb
new file mode 100644
index 0000000..57da660
--- /dev/null
+++ b/app/views/categories/edit.html.erb
@@ -0,0 +1,8 @@
+<div class="mx-auto md:w-2/3 w-full">
+  <h1 class="font-bold text-4xl">Editing category</h1>
+
+  <%= render "form", category: @category %>
+
+  <%= link_to "Show this category", @category, class: "ml-2 rounded-lg py-3 px-5 bg-gray-100 inline-block font-medium" %>
+  <%= link_to "Back to categories", categories_path, class: "ml-2 rounded-lg py-3 px-5 bg-gray-100 inline-block font-medium" %>
+</div>
diff --git a/app/views/categories/index.html.erb b/app/views/categories/index.html.erb
new file mode 100644
index 0000000..68911e6
--- /dev/null
+++ b/app/views/categories/index.html.erb
@@ -0,0 +1,21 @@
+<div class="w-full">
+  <% if notice.present? %>
+    <p class="py-2 px-3 bg-green-50 mb-5 text-green-500 font-medium rounded-lg inline-block" id="notice"><%= notice %></p>
+  <% end %>
+
+  <% content_for :title, "Categories" %>
+
+  <div class="flex justify-between items-center">
+    <h1 class="font-bold text-4xl">Categories</h1>
+    <%= link_to "New category", new_category_path, class: "rounded-lg py-3 px-5 bg-blue-600 text-white block font-medium" %>
+  </div>
+
+  <div id="categories" class="min-w-full">
+    <% @categories.each do |category| %>
+      <%= render category %>
+      <p>
+        <%= link_to "Show this category", category, class: "ml-2 rounded-lg py-3 px-5 bg-gray-100 inline-block font-medium" %>
+      </p>
+    <% end %>
+  </div>
+</div>
diff --git a/app/views/categories/index.json.jbuilder b/app/views/categories/index.json.jbuilder
new file mode 100644
index 0000000..aa5baad
--- /dev/null
+++ b/app/views/categories/index.json.jbuilder
@@ -0,0 +1 @@
+json.array! @categories, partial: "categories/category", as: :category
diff --git a/app/views/categories/new.html.erb b/app/views/categories/new.html.erb
new file mode 100644
index 0000000..fae8770
--- /dev/null
+++ b/app/views/categories/new.html.erb
@@ -0,0 +1,7 @@
+<div class="mx-auto md:w-2/3 w-full">
+  <h1 class="font-bold text-4xl">New category</h1>
+
+  <%= render "form", category: @category %>
+
+  <%= link_to "Back to categories", categories_path, class: "ml-2 rounded-lg py-3 px-5 bg-gray-100 inline-block font-medium" %>
+</div>
diff --git a/app/views/categories/show.html.erb b/app/views/categories/show.html.erb
new file mode 100644
index 0000000..e38975f
--- /dev/null
+++ b/app/views/categories/show.html.erb
@@ -0,0 +1,15 @@
+<div class="mx-auto md:w-2/3 w-full flex">
+  <div class="mx-auto">
+    <% if notice.present? %>
+      <p class="py-2 px-3 bg-green-50 mb-5 text-green-500 font-medium rounded-lg inline-block" id="notice"><%= notice %></p>
+    <% end %>
+
+    <%= render @category %>
+
+    <%= link_to "Edit this category", edit_category_path(@category), class: "mt-2 rounded-lg py-3 px-5 bg-gray-100 inline-block font-medium" %>
+    <%= link_to "Back to categories", categories_path, class: "ml-2 rounded-lg py-3 px-5 bg-gray-100 inline-block font-medium" %>
+    <div class="inline-block ml-2">
+      <%= button_to "Destroy this category", @category, method: :delete, class: "mt-2 rounded-lg py-3 px-5 bg-gray-100 font-medium" %>
+    </div>
+  </div>
+</div>
diff --git a/app/views/categories/show.json.jbuilder b/app/views/categories/show.json.jbuilder
new file mode 100644
index 0000000..30e6b47
--- /dev/null
+++ b/app/views/categories/show.json.jbuilder
@@ -0,0 +1 @@
+json.partial! "categories/category", category: @category