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JSON Web Tokens

What are JSON Web Tokens?

• Open-source industry standart (RFC-7519).
• Usable for Authorization or secure exchange of information bretween parties.
• Verify that the sender is who it/he/she claims to be.
• Signed by the issuer, using a secret or keypair (HMAC algorithm, RSA or ECDSA).

JWT Structure

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Redux

Redux is based on FLUX application architecture (by Facebook)

Building Blocks of Redux are:-

• Action Javascript objects that represents what just happend. We could also call them Events e.g. userAdded, userUpdated, userRemoved

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Mutable and Immutable Data Types

Textbook Definition

A mutable object is an object whose state can be changed or modified over time. A immutable object is an object whose state cannot be modified after it is created.

In Javascript String and Numbers are immutable and Objects and arrays ars mutable.

let a = 7
a += 1

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Endpoint to search keyword in the database.

async function getSearchedData (search:string){
  try {
    const searchData = return await this.connection
                                     .getRepository(UserEntity)
                                     .createQueryBuilder("user")
                                     .leftJoinAndSelect("user.roles", "roles")
                                     .where(
 "user.full_name LIKE :search OR user.username LIKE :search OR user.email LIKE :search",

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Typeorm Querying data with realtions.

Using Repository

const data = this.userRepository.find({
                    relations: ['photos']
                  })

Using QueryBuilder