module Api
  module V1
    class IngredientMeasuresController < ApplicationController

    def index
      render json: IngredientMeasure.all
    end

    def create
      ingredient_measure = IngredientMeasure.new(params[:ingredient_id, :measure_id])
      if ingredient_measure.save
        render json: ingredient_measure
      else
        render json: {status: 500, err: 'Ingredient measure could not be created'}
      end
    end
    private

    def ingredient_measure_params
      params.require(:ingredient_measure).permit(:ingredient_id, :measure_id)
     end
   end
 end
end

{
    "measure_id" : 3,
    "ingredient_id":3
}

create_table "ingredient_measures", force: :cascade do |t|
t.datetime "created_at", null: false
t.datetime "updated_at", null: false
t.bigint "ingredient_id"
t.bigint "measure_id"
t.index ["ingredient_id"], name: "index_ingredient_measures_on_ingredient_id"
t.index ["measure_id"], name: "index_ingredient_measures_on_measure_id"
end

ingredient_measure = IngredientMeasure.new(ingredient_measure_params)

{
  "ingredient_measure": {
    "measure_id" : 3,
    "ingredient_id" : 3
  }
}

params.require(:ingredient_measure).permit(:ingredient_id, :measure_id)

IngredientMeasure.new(ingredient_measure_params)