ruby on rails - ActiveRecord::RecordNotFound in CommentsController#create, Couldn't find Post with 'id'= -

after clicking on create comment, got error this

coment controller:

` used friendlyid instead of post id.

error:

activerecord::recordnotfound in commentscontroller#create couldn't find post 'id'=

class commentscontroller < applicationcontroller

def create     @post = post.find(params[:post_id])     @comment = @post.comments.create(params[:comment].permit(:name, :body))     redirect_to post_path(@post) end       comments form: _comments.html.erb      `<%= form_for([@post,@post.comments.build]) |f| %>        <p>         <%= f.label :name %>         <%= f.text_field :name %>        </p>        <p>         <%= f.label :body %><br>         <%= f.text_area :body %>        </p>        <p>         <%= f.submit %>        </p>     <% end %>`  posts controller:  post_controller.rb      `class postscontroller < applicationcontroller       before_action :set_post, only: [:show, :edit, :update, :destroy]        def index         @posts = post.all.order("created_at desc")       end        def show       end        def new         @post = post.new       end        def edit       end        def create         @post = post.new(post_params)          respond_to |format|           if @post.save             format.html { redirect_to @post, notice: 'post created.' }             format.json { render :show, status: :created, location: @post }           else             format.html { render :new }             format.json { render json: @post.errors, status: :unprocessable_entity }           end         end       end        def update         respond_to |format|           if @post.update(post_params)             format.html { redirect_to @post, notice: 'post updated.' }             format.json { render :show, status: :ok, location: @post }           else             format.html { render :edit }             format.json { render json: @post.errors, status: :unprocessable_entity }           end         end       end        def destroy         @post.destroy         respond_to |format|           format.html { redirect_to posts_url, notice: 'post destroyed.' }           format.json { head :no_content }         end       end        private         def set_post           @post = post.friendly.find(params[:id])         end          def post_params           params.require(:post).permit(:title, :description, :image)         end     end     `     model: post.rb      class post < applicationrecord     has_many :comments     extend friendlyid     friendly_id :title, use: :slugged      has_attached_file :image, styles: { medium: "900x380#", thumb: "300x165>" }     validates_attachment_content_type :image, content_type: /\aimage\/.*\z/ end