[Solved] You are implementing a Flask REST API endpoint to fetch a movie by its ID. If the movie does not exist, you want to return a 404 status with a JSON error message.... | Rest API

Rest API - HTTP Status Codes

You are implementing a Flask REST API endpoint to fetch a movie by its ID. If the movie does not exist, you want to return a 404 status with a JSON error message. Which of the following code snippets correctly achieves this?

from flask import Flask, jsonify, abort
app = Flask(__name__)

@app.route('/movies/')
def get_movie(id):
    movies = {1: 'Inception', 2: 'Interstellar'}
    # Which code correctly returns 404 with JSON if movie missing?

Aif id not in movies: abort(404) return jsonify({'movie': movies[id]})

Bif id not in movies: return jsonify({'error': 'Movie not found'}), 404 return jsonify({'movie': movies[id]})

Cif id not in movies: return 'Movie not found', 404 return jsonify({'movie': movies[id]})

Dif id not in movies: return jsonify({'message': 'Movie missing'}) return jsonify({'movie': movies[id]})

Step-by-Step Solution

Solution:

Step 1: Return JSON with 404
if id not in movies: return jsonify({'error': 'Movie not found'}), 404 return jsonify({'movie': movies[id]}) returns a JSON object with error message and sets status 404 explicitly.
Step 2: Compare other options
if id not in movies: abort(404) return jsonify({'movie': movies[id]}) aborts with 404 but returns default HTML, not JSON.
if id not in movies: return 'Movie not found', 404 return jsonify({'movie': movies[id]}) returns plain text, not JSON.
if id not in movies: return jsonify({'message': 'Movie missing'}) return jsonify({'movie': movies[id]}) returns JSON but no 404 status.
Final Answer:
if id not in movies: return jsonify({'error': 'Movie not found'}), 404 return jsonify({'movie': movies[id]}) correctly returns JSON and 404 status.
Quick Check:
Return JSON + 404 status for missing resource. [OK]

Quick Trick: Use jsonify with status code for JSON 404 responses [OK]

Common Mistakes:

MISTAKES

Using abort(404) without JSON response
Returning plain text instead of JSON
Not setting 404 status code when resource missing

Master "HTTP Status Codes" in Rest API

9 interactive learning modes - each teaches the same concept differently

Learn Why Deep Visual Try Challenge Project Recall Time

More Rest API Quizzes

Which of the following code snippets correctly achieves this?

Step 1: Return JSON with 404

Step 2: Compare other options

Final Answer:

Quick Check:

Want More Practice?