Pages

Projet final

 

express-locallibrary-tutorial

Tutorial "Local Library" website written in Node/Express.

 

🎉code → https://github.com/dupontdenis/library.git


http://localhost:3000/catalog

http://localhost:3000/catalog/books


http://localhost:3000/catalog/author/create


API examples


🍕Projet API pizza

📚Projet API Books

🧑🏽‍🏫Projet API Teacher

Virtual en action !


 

How to : virtual

Mongoose tout en un !

 


→ mongoose how to !

Mongoose !


📕Cours 

→ https://dupontmongodb.blogspot.com/


🛟Tout en 1 

→ Mongoose par l'exemple !


Installation Mongodb ⚒️

 mongodb →

installation mongodb

🥷Code

https://github.com/dupontdenis/testMongo.git


💸Code avec mongoose

https://github.com/dupontdenis/TESTMONGOOSE.git


Test

https://github.com/dupontdenis/TESTCORSMONGO.git 



Let's start 

Mongoose !

Let's start with mongoose !

Example : 

  1. // Include virtuals when converting documents to objects/JSON
  2. pizzaSchema.set("toObject", { virtuals: true });
  3. pizzaSchema.set("toJSON", { virtuals: true });

  4. // Virtual populate: connect Pizza -> Topping via Topping.pizzas (inverse relation)
  5. pizzaSchema.virtual("toppings", {
  6.   ref: "Topping",
  7.   localField: "_id",
  8.   foreignField: "pizzas",
  9.   justOne: false,
  10. });

  11. // Virtual total price (cents) includes toppings when `toppings` is populated
  12. pizzaSchema.virtual("totalPriceCents").get(function () {
  13.   // Compute total price from populated `toppings` only (no base pizza price)
  14.   if (
  15.     !this.toppings ||
  16.     !Array.isArray(this.toppings) ||
  17.     this.toppings.length === 0
  18.   )
  19.     return 0;
  20.   return this.toppings.reduce((acc, t) => acc + (t.priceCents || 0), 0);
  21. });

  22. pizzaSchema.virtual("totalPriceEur").get(function () {
  23.   return (this.totalPriceCents || 0) / 100;
  24. });

  25. export const Pizza = mongoose.model("Pizza", pizzaSchema);

Relation : many to one