Links, mainly...

app/controllers/link_categories_controller.rb

@@ -0,0 +1,58 @@
+class LinkCategoriesController < ApplicationController
+  before_action :set_link_category, only: %i[ show edit update destroy ]
+
+  # GET /link_categories
+  def index
+    @link_categories = LinkCategory.all
+  end
+
+  # GET /link_categories/1
+  def show
+  end
+
+  # GET /link_categories/new
+  def new
+    @link_category = LinkCategory.new
+  end
+
+  # GET /link_categories/1/edit
+  def edit
+  end
+
+  # POST /link_categories
+  def create
+    @link_category = LinkCategory.new(link_category_params)
+
+    if @link_category.save
+      redirect_to @link_category, notice: "Link category was successfully created."
+    else
+      render :new, status: :unprocessable_entity
+    end
+  end
+
+  # PATCH/PUT /link_categories/1
+  def update
+    if @link_category.update(link_category_params)
+      redirect_to @link_category, notice: "Link category was successfully updated.", status: :see_other
+    else
+      render :edit, status: :unprocessable_entity
+    end
+  end
+
+  # DELETE /link_categories/1
+  def destroy
+    @link_category.destroy!
+    redirect_to link_categories_url, notice: "Link category was successfully destroyed.", status: :see_other
+  end
+
+  private
+    # Use callbacks to share common setup or constraints between actions.
+    def set_link_category
+      @link_category = LinkCategory.find(params[:id])
+    end
+
+    # Only allow a list of trusted parameters through.
+    def link_category_params
+      params.require(:link_category).permit(:name, :description, :rich_text)
+    end
+end