budget/app/controllers/incomes_controller.rb

class IncomesController < ApplicationController
  before_action :set_income, only: %i[show edit update destroy]

  # GET /incomes or /incomes.json
  def index
    @incomes = Income.all
  end

  # GET /incomes/1 or /incomes/1.json
  def show
  end

  # GET /incomes/new
  def new
    @income = Income.new
  end

  # GET /incomes/1/edit
  def edit
  end

  # POST /incomes or /incomes.json
  def create
    @income = Income.new(income_params)

    respond_to do |format|
      if @income.save
        format.html { redirect_to income_url(@income), notice: "Income was successfully created." }
        format.json { render :show, status: :created, location: @income }
      else
        format.html { render :new, status: :unprocessable_entity }
        format.json { render json: @income.errors, status: :unprocessable_entity }
      end
    end
  end

  # PATCH/PUT /incomes/1 or /incomes/1.json
  def update
    respond_to do |format|
      if @income.update(income_params)
        format.html { redirect_to income_url(@income), notice: "Income was successfully updated." }
        format.json { render :show, status: :ok, location: @income }
      else
        format.html { render :edit, status: :unprocessable_entity }
        format.json { render json: @income.errors, status: :unprocessable_entity }
      end
    end
  end

  # DELETE /incomes/1 or /incomes/1.json
  def destroy
    @income.destroy

    respond_to do |format|
      format.html { redirect_to incomes_url, notice: "Income was successfully destroyed." }
      format.json { head :no_content }
    end
  end

  private

  # Use callbacks to share common setup or constraints between actions.
  def set_income
    @income = Income.find(params[:id])
  end

  # Only allow a list of trusted parameters through.
  def income_params
    params.require(:income).permit(:description, :included, :amount, :member_id)
  end
end