bezrukavyi / json-api-transform

Suitable tools for transform json api response

Json Api Transform

Suitable tools for transform json api response

Installation

npm install json-api-transform --save

Usage

In reducer.js

import { insert, clear, slice } from 'json-api-transform'

const reducer = (state = {}, { type, entityTypes, payload }) => {
  switch (type) {
    case 'FETCH_ANY_ENTITY_SUCCESS':
    case 'FETCH_ANY_ENTITIES_SUCCESS':
    case 'UPDATE_ANY_ENTITY_SUCCESS':
    case 'CREATE_ANY_ENTITY_SUCCESS': {
      return insert(state, payload.data)
    }
    case 'DESTROY_ANY_ENTITY_SUCCESS': {
    case 'DESTROY_ANY_ENTITIES_SUCCESS': {
      return slice(state, payload.data)
    }
    case 'CLEAR_ANY_ENTITIES': {
      return clear(state, entityTypes)
    }
    default:
      return state
  }
}

export default reducer

All functions are immutable

Insert to state

insert will return new state with response entities

Slice from state

slice will return new state without response entities

Clear state

clear will return new state without entities by special types

Custom transform function

import { transform } from 'json-api-transform'

const transformerFunction = (state, currentEntitiesArray, currentEntitiesTypeString) => {
  return state
}

myCustomTransform = (state, data) => transform(state, data, transformerFunction)

transformerFunction is function that takes 3 arguments:

1. state - default object
2. entities - array of normalized objects
3. type - type(string) of current entities

All data from response will be normalized by normalizr function. Example:

import { normalizr } from 'json-api-transform'

data = {
  "data":[
    {
      "id":"1",
      "type":"projects",
      "attributes":{
        "title":"Project 1",
      },
      "relationships":{
        "tasks":{
          "data":[
            {
              "id":"1",
              "type":"tasks"
            }
          ]
        }
      }
    }
  ],
  "included":[
    {
      "id":"1",
      "type":"tasks",
      "attributes":{
        "title":"Task 1.1",
        "project-id":1
      }
    }
  ]
}

normalizedData = normalizr(data)

Return next

{
  "entities":{
    "projects":{
      "byId":{
        "1":{ "id":"1", "type":"projects", "title":"Project 1", "tasks":["1"] }
      },
      "allIds":["1"]
    },
    "tasks":{
      "byId":{
        "1":{ "id":"1", "type":"tasks", "title":"Task 1.1", "projectId":1 }
      },
      "allIds":["1"]
    }
  }
}

License

The components is available as open source under the terms of the MIT License.