Implementing Update and Delete operations for movies

Update Operation

Display the Update Form:**

• Purpose: Provide a form pre-filled with the current movie details.
• HTML Template (edit_movie.html):

  <!-- Jinja extends -->
      <h1>Edit Movie</h1>
      <form action="/movies/{{ movie._id }}/update" method="post">
        <label for="title">Title:</label>
        <input type="text" id="title" name="title" value="{{ movie.title }}" required><br>
  
        <label for="year">Year:</label>
        <input type="number" id="year" name="year" value="{{ movie.year }}" required><br>
  
        <label for="genre">Genre:</label>
        <input type="text" id="genre" name="genre" value="{{ movie.genre }}" required><br>
  
        <label for="director">Director:</label>
        <input type="text" id="director" name="director" value="{{ movie.director }}"><br>
  
        <button type="submit">Update Movie</button>
      </form>
    <!-- Jinja close -->
  

Handle Update Form Submission in Flask:**

• Route to Display Update Form:

  @app.route('/movies/<movie_id>/edit')
  def edit_movie(movie_id):
      movie = mongo.db.movies.find_one({'_id': ObjectId(movie_id)})
      return render_template('edit_movie.html', movie=movie)
  

• Route to Handle Update Submission:

  @app.route('/movies/<movie_id>/update', methods=['POST'])
  def update_movie(movie_id):
      title = request.form['title']
      year = request.form['year']
      genre = request.form['genre']
      director = request.form.get('director')
  
      mongo.db.movies.update_one(
          {'_id': ObjectId(movie_id)},
          {'$set': {
              'title': title,
              'year': year,
              'genre': genre,
              'director': director
          }}
      )
      return redirect('/')
  

Delete Operation

Delete Button in Movie Details Page

• HTML Template Snippet:

  <form action="/movies/{{ movie._id }}/delete" method="post" onsubmit="return confirm('Are you sure you want to delete this movie?');">
    <button type="submit">Delete Movie</button>
  </form>
  

Handle Delete Request in Flask

• Route to Handle Deletion:

  @app.route('/movies/<movie_id>/delete', methods=['POST'])
  def delete_movie(movie_id):
      mongo.db.movies.delete_one({'_id': ObjectId(movie_id)})
      return redirect('/movies')