This Neo4j-based example app displays movie and person data in a manner similar to IMDB.
It is designed to serve as a template for further development projects.
There are two versions of the backend - a Python/Flask backend at /flask-api, and a JavaScript/Express backend at /api.
The web frontend can be found at /web.
Feel encouraged to fork and update this repo!
MoviePersonGenre
(:Person)-[:ACTED_IN {role:"some role"}]->(:Movie)(:Person)-[:DIRECTED]->(:Movie)(:Person)-[:WRITER_OF]->(:Movie)(:Person)-[:PRODUCED]->(:Movie)(:MOVIE)-[:HAS_GENRE]->(:Genre)
Go to https://sandbox.neo4j.com/?usecase=recommendations&ref=movie-app-tutorial, pick "Recommendations", and press play to start the database.
Make sure to edit the file flask-api/.env or api/.env and update the MOVIE_DATABASE_USERNAME,
MOVIE_DATABASE_PASSWORD, and MOVIE_DATABASE_URL of your chosen backend to connect to your instance.
First, configure your api/.env file to point to your database.
Then, from the root directory of this project:
cd apinvm usenpm installnode app.jsstarts the API- Take a look at the docs at http://localhost:3000/docs
First, configure your flask-api/.env file to point to your database.
Then, from the root directory of this project:
cd flask-api
python3 -m venv venv
source venv/bin/activate
pip3 install -r requirements.txt
export FLASK_APP=app.py
flask run
- Take a look at the docs at http://localhost:5000/docs
From the root directory of this project, set up and start the frontend with:
cd webnvm usenpm install- update
web/.envfile
If you are using the Node API set REACT_APP_API_BASE_URL to http://localhost:3000/api/v0
If you are using the Flask api then set it to http://localhost:5000/api/v0
npm startstarts the app on http://localhost:3000/
voilà! IMDB, eat your heart out ;-)
Based on my similarity to other users, user Omar Huffman might be interested in movies rated highly by users with similar ratings as himself.
MATCH (me:User {name:"Omar Huffman"})-[my:RATED]->(m:Movie)
MATCH (other:User)-[their:RATED]->(m)
WHERE me <> other
AND abs(my.rating - their.rating) < 2
WITH other,m
MATCH (other)-[otherRating:RATED]->(movie:Movie)
WHERE movie <> m
WITH avg(otherRating.rating) AS avgRating, movie
RETURN movie
ORDER BY avgRating desc
LIMIT 25
The Express API is located in the /api folder.
The API itself is created using the Express web framework for Node.js. The API endpoints are documented using Swagger.
To add a new API endpoint there are 3 steps:
- Create a new route method in
/api/routesdirectory - Describe the method with swagger specification inside a JSDoc comment to make it visible in swagger
- Add the new route method to the list of route methods in
/api/app.js.
The Flask API is located in the /flask-api folder.
The application code is in the app.py file.
The API itself is created using the Flask-RESTful library. The API endpoints are documented using Swagger.
To add a new API endpoint there are 3 steps:
- Create a new Flask-RESTful resource class
- Create an endpoint method including the swagger docs decorator.
- Add the new resource to the API at the bottom of the file.
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