old_contents: from flask import render_template, redirect, url_for
  from flask_classy import FlaskView, route
  from flask_user import login_required
  from ..models import PostModel
  from ..forms import PostForm
  
  
  class Post(FlaskView):
      """ Here will handle post creations, delete and update."""
  
      def get(self, entity_id):
          post = PostModel()
          post = post.get(entity_id)
          return render_template("post/post.html", post=post)
  
      @login_required
      @route("/new/", methods=["GET", "POST"])
      def new(self):
          form = PostForm()
          if form.validate_on_submit():
              post = PostModel(**form.data)
              post.put()
              return redirect(url_for("Post:get", entity_id=post.id))
          return render_template("post/post_form.html", form=form,
                                 url="Post:new")
  
      @login_required
      @route("/edit/<entity_id>", methods=["GET", "POST"])
      def edit(self, entity_id):
          post = PostModel()
          entity = post.get(entity_id)
          form = PostForm(**entity)
          if form.validate_on_submit():
              post.update(entity_id, form.data)
              return redirect(url_for("Post:get", entity_id=entity_id))
          return render_template("post/post_form.html", form=form,
                                 url="Post:edit", entity_id=entity_id)
  
new_contents: from flask import render_template, redirect, url_for
  from flask_classy import FlaskView, route
  from flask_user import login_required, current_user
  from ..models import PostModel
  from ..forms import PostForm
  
  
  class Post(FlaskView):
      """ Here will handle post creations, delete and update."""
  
      def get(self, entity_id):
          post = PostModel()
          post = post.get(entity_id)
          return render_template("post/post.html", post=post)
  
      @login_required
      @route("/new/", methods=["GET", "POST"])
      def new(self):
          form = PostForm()
          if form.validate_on_submit():
              post = PostModel(user=current_user.username, **form.data)
              post.put()
              current_user.add_post(post.id)
              return redirect(url_for("Post:get", entity_id=post.id))
          return render_template("post/post_form.html", form=form,
                                 url="Post:new")
  
      @login_required
      @route("/edit/<entity_id>", methods=["GET", "POST"])
      def edit(self, entity_id):
          post = PostModel()
          entity = post.get(entity_id)
          form = PostForm(**entity)
          if form.validate_on_submit():
              post.update(entity_id, form.data)
              return redirect(url_for("Post:get", entity_id=entity_id))
          return render_template("post/post_form.html", form=form,
                                 url="Post:edit", entity_id=entity_id)
  
subject: Update post view to save username references and save a post id in user entity