Rails strong parameters for nested attributes

                  module Api
  module V1
    class PostsController < ApplicationController
      def create
        post = current_user.posts.build(post_params)

        if post.save
          render json: post, serializer: PostSerializer, status: :created
        else
          render json: { errors: post.errors }, status: :unprocessable_entity
        end
      end

      def update
        post = current_user.posts.find(params[:id])

        if post.update(post_params)
          render json: post, serializer: PostSerializer
        else
          render json: { errors: post.errors }, status: :unprocessable_entity
        end
      end

      private

      def post_params
        params.require(:post).permit(
          :title,
          :body,
          :status,
          :cover_image_blob_id,
          tags: [],
          images_attributes: [:id, :blob_id, :caption, :_destroy],
          meta_attributes: [:description, :keywords, :og_image]
        )
      end
    end
  end
end