Mongoosastic(4.4.1) and elasticsearch(6.2.3)

04 Apr 2018 elasticsearch mongoosastic

Ref

https://github.com/mongoosastic/mongoosastic
https://www.elastic.co/blog/strings-are-dead-long-live-strings

How it works?

const mongoose = require('mongoose');
const mongoosastic = require('mongoosastic');

const { Schema } = mongoose;

const ProductSchema = new Schema({
  category: { type: Schema.Types.ObjectId, ref: 'Category' },
  name: String,
  price: Number,
  image: String,
});

ProductSchema.plugin(mongoosastic, {
  hosts: ['localhost:9200'],
});

module.exports = mongoose.model('Product', ProductSchema);

By using mongoosastic as plugin there shall be some function added to Product model (ex: Product.createMapping, Product.synchronize)

createMapping shall create a query with content map from mongo schema fields (ex: category, name) into elasticsarch fields

Ex: body: ‘{“product”:{“properties”:{“category”:{“type”:”string”},”name”:{“type”:”string”},”price”:{“type”:”long”},”image”:{“type”:”string”}}}

Issue

'[mapper_parsing_exception] No handler for type [string] declared on field [category]',

This is because on version 6.x.x of elasticsearch string is removed and replaced by text type

Fix: add customProperties when set mognosastic plugin

ProductSchema.plugin(mongoosastic, {
  hosts: ['localhost:9200'],
  customProperties: {
    category: {
      type: 'text',
    },
    name: {
      type: 'text',
    },
    price: {
      type: 'long',
    },
    image: {
      type: 'text',
    },
  },
});