Routes not working correctly

I am new to ruby and working through a tutorial, however one of my links is not working and not sure what is happening.

My navigation link to create a new post is not taking me to the correct page, when I click the link to the "posts_path" the page does not change.

I can create a new posts by typing in the /posts/new in the address bar, but when I click the "New Post" link on the nav bar the page does not update (although the url displays /posts). Any idea how to fix this?

config/routes.rb

Rails.application.routes.draw do
get 'sessions/new'
root 'static_pages#home'
get  '/search', to: 'static_pages#search'
get  '/login', to: 'sessions#new'
get  '/posts', to: 'posts#new'
post  '/login', to: 'sessions#create'
delete  '/logout', to: 'sessions#destroy'
get  '/signup', to: 'users#new'
get 'users/new'
get 'static_pages/home'
get 'posts/new'
get 'sessions/new'
resources :users
resources :account_activations, only: [:edit]
resources :password_resets, only: [:new, :create, :edit, :update]
resources :posts, only: [:new, :create, :destroy]
end

app/views/layouts/_header.html.erb

<header class="navbar navbar-fixed-top navbar-inverse">
<div class="container">
  <% link_to "sample app", root_path, id: "logo" %>
    <nav>
      <ul class="nav navbar-nav navbar-right">
        <li><%= link_to "Home", root_path %></li>
        <li><%= link_to "Search", search_path %></li>
          <% if logged_in? %>
            <li><%= link_to "Users", users_path %></li>
            <li><%= link_to "Posts", posts_path %></li>
            <li class="dropdown">
             <a href='#' class="dropdown-toggle" data-toggle="dropdown">Account <b class="caret"></b></a>
             <ul class="dropdown-menu">
              <li><%= link_to "Profile", current_user %></li>
              <li><%= link_to "Settings", edit_user_path(current_user) %></li>
              <li class="divider"></li>
              <li><%= link_to "Logout", logout_path, method: "delete" %></li>
             </ul>
           </li>
           <% else %>
             <li><%= link_to "Log in", login_path %></li>
           <% end %>
          </ul>
       </nav>
  </div>

posts_controller.rb

class PostsController < ApplicationController
    before_action :logged_in_user, only: [:create, :destroy]
    before_action :correct_user, only: :destroy

    def create
            @post = current_user.posts.build(post_params)
            if @post.save
                    flash[:success] = "Post created!"
                    redirect_to root_url
            else
                    @feed_items = []
                    render 'static_pages/home'
            end
    end

    def destroy
            @post.destroy
            flash[:success] = "Post Deleted"
            redirect_to request.referrer || root_url
    end
    def new
       @post = current_user.posts.build if logged_in?
    end

    private

    def post_params
            params.require(:post).permit(:description, :picture)
    end

    def correct_user
            @post = current_user.posts.find_by(id:params[:id])
            redirect_to root_url if @post.nil?
    end
end