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https://github.com/arve0/feathers-mongodb-fuzzy-search
Add fuzzy $search to mongodb service.find queries
https://github.com/arve0/feathers-mongodb-fuzzy-search
Last synced: 3 months ago
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Add fuzzy $search to mongodb service.find queries
- Host: GitHub
- URL: https://github.com/arve0/feathers-mongodb-fuzzy-search
- Owner: arve0
- Created: 2017-06-26T21:05:39.000Z (about 7 years ago)
- Default Branch: master
- Last Pushed: 2023-01-23T18:22:31.000Z (over 1 year ago)
- Last Synced: 2024-03-17T13:43:59.148Z (4 months ago)
- Language: JavaScript
- Homepage: https://www.npmjs.com/package/feathers-mongodb-fuzzy-search
- Size: 197 KB
- Stars: 40
- Watchers: 3
- Forks: 10
- Open Issues: 12
-
Metadata Files:
- Readme: README.md
Lists
- awesome-feathersjs - feathers-mongodb-fuzzy-search - Add fuzzy search to your mongodb service queries (Plugins / Database)
README
[](https://badge.fury.io/js/feathers-mongodb-fuzzy-search) [](https://travis-ci.org/arve0/feathers-mongodb-fuzzy-search)
# feathers-mongodb-fuzzy-search
Add `$search` to mongodb `service.find`, `update`, `patch` and `remove` queries. Full-text search on documents with [stemming](https://en.wikipedia.org/wiki/Stemming) as well as pattern matching on individual fields.
For full-text search, be sure to index your text fields, as this plugin uses [mongodb $text](https://docs.mongodb.com/manual/reference/operator/query/text/).
For field pattern matching, [mongodb $regex](https://docs.mongodb.com/manual/reference/operator/query/regex/) is used.
## Install
```
npm install feathers-mongodb-fuzzy-search
```
## Usage
```js
const service = require('feathers-mongodb')
const search = require('feathers-mongodb-fuzzy-search')
app.use('/messages', service({
Model: db.collection('messages'),
whitelist: ['$text', '$search'], // fields used by feathers-mongodb-fuzzy-search
}))
// add search hook
// may also use service.hooks to apply it on individual services only
app.hooks({
before: {
all: [
search(), // full text search on text indexes
search({ // regex search on given fields
fields: ['firstName', 'lastName']
})
]
}
})
// create a text index on title property, for full-text search
// you may add multiple fields to the text index
// see the mongodb documentation for more on $text
const messages = app.service('messages')
// If you're using MongoDB database adapter:
messages.Model.createIndex({ title: 'text' })
// or if you're using Mongoose database adapter:
// messages.Model.index({ title: 'text' })
// find documents with title containing 'cat'
// will find titles including 'cat', 'cats', etc. thanks to mongodb stemming
// note: you can only use await inside async functions
let catDocuments = await messages.find({ query: { $search: 'cat' } })
// find users with first name containing a 's' and last name containing 'art'
let userDocuments = await app.service('users').find({
query: {
firstName: { $search: 's' },
lastName: { $search: 'art' }
}
})
```
Complete example [here](./example.js).
## REST usage
Full text search for `qwerty` with mongodb $text:
```sh
curl http://localhost:3030/messages?$search=qwerty
```
Search for `qwerty` on field `firstName` with mongodb $regex:
```sh
curl http://localhost:3030/users?firstName[$search]=qwerty
```
## Notes
### Full-text search
As default `"` in `$search` is removed and `$search` is padded with `"`. E.g. `some " text` becomes `"some text"`. If you want to disable this behaviour and leverage the full MongoDB $text API, you can disable escaping like this:
```js
app.hooks({
before: {
find: search({ escape: false })
}
})
```
### RegExp field search
Remember to allow `$regex` in the service:
```js
app.use('/messages', service({
Model: db.collection('messages'),
whitelist: ['$regex'], // field used by feathers-mongodb-fuzzy-search
}))
```
If not, you will get the error `BadRequest: Invalid query parameter $regex` on requests.
The `options` object given to `search(options)` supports the following:
- `fields`: Array of field names to allow searching in.
- `excludedFields`: Array of field names that *can't* be searched. If given, any field not in array can be searched.
- `fieldsNotEscaped`: Array of fields to be excluded from RegExp escape. As default any field not given are escaped to avoid [RegExp denial of service attacks](https://www.owasp.org/index.php/Regular_expression_Denial_of_Service_-_ReDoS).
```js
app.service('users').hooks({
before: {
find: search({
// make all fields but 'fullName' are searchable
excludedFields: ['fullName'],
// do not escape RegExp special characters for the field 'firstName'
fieldsNotEscaped: ['firstName']
})
}
})
```
### MongoDB options
You can pass MongoDB options for `$text`, like `$language`, `$caseSensitive` and `$diacriticSensitive` with your query. E.g. If you'd like to disable [stemming](https://en.wikipedia.org/wiki/Stemming) add `$language: 'none'` to your query parameters:
```js
users.find({
query: {
$search: 'cats',
$language: 'none'
}
})
```
**NOTE:** Remeber to allow the fields in your service:
```js
app.use('/messages', service({
Model: db.collection('messages'),
// fields used by feathers-mongodb-fuzzy-search
whitelist: ['$text', '$search', '$caseSensitive', '$language', '$diacriticSensitive'],
}))
```
### Additional information
This package is tested with MongoDB version 3.2. You will probably run into problems using older versions of MongoDB, for example version 2.4 does not support `$text` search.
See [mongodb documentation](https://docs.mongodb.com/manual/reference/operator/query/text/#search-field) for more details about `$text`.
See [mongodb documentation](https://docs.mongodb.com/manual/reference/operator/query/regex) for more details about `$regex`.
## Development
```
npm test # runs mocha
```
## License
MIT © 2017 Arve Seljebu / Luc Claustres