Sample API using Phalcon

Implementation of an API application using the Phalcon Framework https://phalcon.io

• Clone the project
• In the project folder run docker-compose up -d --build
• Hit the IP address with postman

As part of the security of the API, JWT are used. JSON Web Tokens offer an easy way for a consumer of the API to send requests without the need to authenticate all the time. The expiry of each token depends on the setup of the API. An admin can easily keep the expiry very short, thus consumers will always have to log in first and then access a resource, or they can increase the "life" of each token, thus having less calls to the API.

• Lazy loading to save resources per request
• Stop execution as early as possible when an error occurs
• Execution
  • NotFound - 404 when the resource requested is not found
  • Authentication - After a /login checks the Authentication header
  • TokenUser - When a token is supplied, check if it corresponds to a user in the database
  • TokenVerification - When a token is supplied, check if it is correctly signed
  • TokenValidation - When a token is supplied, check if it is valid (issuedAt, notBefore, expires)

This implementation follows the JSON API standard. All responses are formatted according to the standard, which offers a uniformed way of presenting data, simple or compound documents, includes (related data), sparse fieldsets, sorting, patination and filtering.

The routes available are:

/companies/<number>?included=<individuals>,<products>

individuals/<number>?included=<companies>,<individual-types>

individual-types/<number>?included=<individuals>

products/<number>?included=<companies>,<product-types>

product-types/<number>?included=<products>

/companies?fields[<relationship>]=<field>,<field>&fields[<relationship>]=<field>,<field>

/companies?sort=<[-]id>,<[-]status>,<[-]username>,<[-]issuer>

individuals?sort=<[-]id',<[-]companyId>,<[-]typeId>,<[-]prefix>,<[-]first>,<[-]middle>,<[-]last>,<[-]suffix'>,

individual-types?sort=<[-]id>,<[-]name>

products?sort=<[-]id',<[-]typeId>,<[-]name>,<[-]quantity>,<[-]price>

product-types?sort=<[-]id>,<[-]name>

Top Elements

• jsonapi Contains the version of the API as a sub element
• data Data returned. Is not present if the errors is present
• errors Collection of errors that occurred in this request. Is not present if the data is present
• meta Contains timestamp and hash of the json_encode($data) or json_encode($errors)

After a GET the API will always return a collection of records, even if there is only one returned. If no data is found, an empty resultset will be returned.

Each endpoint returns records that follow this structure:

{
  "id": 1051,
  "type": "users",
  "attributes": {
    "status": 1,
    "username": "niden",
    "issuer": "https:\/\/niden.net",
    "tokenPassword": "11110000",
    "tokenId": "11001100"
  }
}

The record always has id and type present at the top level. id is the unique id of the record in the database. type is a string representation of what the object is. In the above example it is a users record. Additional data from each record are under the attributes node.

404

{
  "jsonapi": {
    "version": "1.0"
  },
  "errors": {
    "404 not found"
  },
  "meta": {
    "timestamp": "2018-06-08T15:04:34+00:00",
    "hash": "e6d4d57162ae0f220c8649ae50a2b79fd1cb2c60"
  }
}

Error

{
  "jsonapi": {
    "version": "1.0"
  },
  "errors": {
    "Description of the error no 1",
    "Description of the error no 2"
  },
  "meta": {
    "timestamp": "2018-06-08T15:04:34+00:00",
    "hash": "e6d4d57162ae0f220c8649ae50a2b79fd1cb2c60"
  }
}

{
  "jsonapi": {
    "version": "1.0"
  },
  "data": [
  ],
  "meta": {
    "timestamp": "2018-06-08T15:04:34+00:00",
    "hash": "e6d4d57162ae0f220c8649ae50a2b79fd1cb2c60"
  }
}

/products/1134?includes=companies,product-types

{
  "jsonapi": {
    "version": "1.0"
  },
  "data": [
    {
      "type": "products",
      "id": "1134",
      "attributes": {
        "typeId": 890,
        "name": "prd-a-5b64af7e70741",
        "description": "5b64af7e7074a",
        "quantity": 25,
        "price": "19.99"
      },
      "links": {
        "self": "http:\/\/api.phalcon.ld\/products\/1134"
      },
      "relationships": {
        "companies": {
          "links": {
            "self": "http:\/\/api.phalcon.ld\/products\/1134\/relationships\/companies",
            "related": "http:\/\/api.phalcon.ld\/products\/1134\/companies"
          },
          "data": [
            {
              "type": "companies",
              "id": "1430"
            },
            {
              "type": "companies",
              "id": "1431"
            }
          ]
        },
        "product-types": {
          "links": {
            "self": "http:\/\/api.phalcon.ld\/products\/1134\/relationships\/product-types",
            "related": "http:\/\/api.phalcon.ld\/products\/1134\/product-types"
          },
          "data": {
            "type": "product-types",
            "id": "890"
          }
        }
      }
    }
  ],
  "included": [
    {
      "type": "companies",
      "id": "1430",
      "attributes": {
        "name": "com-a5b64af7e6c846",
        "address": "5b64af7e6c84f",
        "city": "5b64af7e6c855",
        "phone": "5b64af7e6c85c"
      },
      "links": {
        "self": "http:\/\/api.phalcon.ld\/companies\/1430"
      }
    },
    {
      "type": "companies",
      "id": "1431",
      "attributes": {
        "name": "com-b5b64af7e6e3d3",
        "address": "5b64af7e6e3dc",
        "city": "5b64af7e6e3e2",
        "phone": "5b64af7e6e3e9"
      },
      "links": {
        "self": "http:\/\/api.phalcon.ld\/companies\/1431"
      }
    },
    {
      "type": "product-types",
      "id": "890",
      "attributes": {
        "name": "prt-a-5b64af7e6f638",
        "description": "5b64af7e6f641"
      },
      "links": {
        "self": "http:\/\/api.phalcon.ld\/product-types\/890"
      }
    }
  ],
  "meta": {
    "timestamp": "2018-08-03T19:39:42+00:00",
    "hash": "384c6b3772727b1a9532865d2ae2d51c095c0fd9"
  }
}

For more information regarding responses, please check JSON API

• Work on companies GET
• Work on included data
• Work on sorting
• Write examples of code to send to the client
• Create docs endpoint
• Work on relationships
• Work on pagination
• Work on filters
• Sorting on related resources
• Perhaps add a new claim to the token tied to the device? setClaim('deviceId', 'Web-Server'). This will allow the client application to invalidate access to a device that has already been logged in.

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