more scaffolding

app/controllers/districts_controller.rb

@@ -0,0 +1,74 @@
+class DistrictsController < ApplicationController
+  before_action :set_district, only: [:show, :edit, :update, :destroy]
+
+  # GET /districts
+  # GET /districts.json
+  def index
+    @districts = District.all
+  end
+
+  # GET /districts/1
+  # GET /districts/1.json
+  def show
+  end
+
+  # GET /districts/new
+  def new
+    @district = District.new
+  end
+
+  # GET /districts/1/edit
+  def edit
+  end
+
+  # POST /districts
+  # POST /districts.json
+  def create
+    @district = District.new(district_params)
+
+    respond_to do |format|
+      if @district.save
+        format.html { redirect_to @district, notice: 'District was successfully created.' }
+        format.json { render :show, status: :created, location: @district }
+      else
+        format.html { render :new }
+        format.json { render json: @district.errors, status: :unprocessable_entity }
+      end
+    end
+  end
+
+  # PATCH/PUT /districts/1
+  # PATCH/PUT /districts/1.json
+  def update
+    respond_to do |format|
+      if @district.update(district_params)
+        format.html { redirect_to @district, notice: 'District was successfully updated.' }
+        format.json { render :show, status: :ok, location: @district }
+      else
+        format.html { render :edit }
+        format.json { render json: @district.errors, status: :unprocessable_entity }
+      end
+    end
+  end
+
+  # DELETE /districts/1
+  # DELETE /districts/1.json
+  def destroy
+    @district.destroy
+    respond_to do |format|
+      format.html { redirect_to districts_url, notice: 'District was successfully destroyed.' }
+      format.json { head :no_content }
+    end
+  end
+
+  private
+    # Use callbacks to share common setup or constraints between actions.
+    def set_district
+      @district = District.find(params[:id])
+    end
+
+    # Never trust parameters from the scary internet, only allow the white list through.
+    def district_params
+      params.require(:district).permit(:name, :state_id)
+    end
+end