// app/javascript/components/NewPost.js

  render() {
    return (
      <div>
        <h1>New Post</h1>
        <form>
            <input
              name="title"
              placeholder="title"
              type="text"
            />
            <input
              name="body"
              placeholder="body"
              type="text"
            />
          <button>Create Post</button>
        </form>
      </div>
    )
  }