cascade-delete-mixin

IMPORTANT! Mixin object structure is changed. If you use "relationsConfig" key, please use 1.3.1 version

npm install --save loopback-cascade-delete-mixin@1.3.1 

or change object structure! (see below)

This module is designed for the Strongloop Loopback framework. It provides cascade delete with a simple configuration on your models.

install

  npm install --save loopback-cascade-delete-mixin

Node.js v. > 6

mixinsources

Add the mixins property to your server/model-config.json like the following:

{
  "_meta": {
    "sources": [
      "loopback/common/models",
      "loopback/server/models",
      "../common/models",
      "./models"
    ],
    "mixins": [
      "loopback/common/mixins",
      "../node_modules/loopback-cascade-delete-mixin",
      "../common/mixins"
    ]
  }
}

config

To use with your Models add the mixins attribute to the definition object of your model config.

  {
    "name": "Product",
    "properties": {
      "name": {
        "type": "string",
      }
    },
    "relations": {
        "properties": {
          "type": "hasMany",
          "model": "Property",
          "foreignKey": ""
        },
        "description": {
           "type": "hasMany",
           "model": "Property",
           "foreignKey": ""
         }
     },
    "mixins": {
      "CascadeDelete": {
        "relations": 
        ["properties",
        {"name": "description", "deepDelete": false}],
        "deepDelete": true,
      }
    }
  }

options

option	type	description	required
relations	[String] or [Object]	relations which you want to delete together with current model, see object keys below	true
deepDelete	[Boolean]	enable or disable the deep delete function. If activated, the CascadeDelete will be executed on the deleted related models as well (if they have the CascadeDelete mixin specified). If not used, disable it for performance matters	false

relations object

key	type	description	required
name	[String]	relation name	true
deepDelete	[Boolean]	enable or disable the deep delete function for current relation. If activated, the CascadeDelete will be executed on the deleted related models as well (if they have the CascadeDelete mixin specified). If not used, disable it for performance matters	false
foreignKey	[String]	custom foreign key	false

tests

Run the tests:

  npm test

Run with debugging output on:

  DEBUG='loopback:mixins:cascade-delete' npm test