Meilisearch-Rails

Meilisearch Rails

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⚡ The Meilisearch integration for Ruby on Rails 💎

**Meilisearch Rails** is the Meilisearch integration for Ruby on Rails developers. **Meilisearch** is an open-source search engine. [Discover what Meilisearch is!](https://github.com/meilisearch/meilisearch) ## Table of Contents - [📖 Documentation](#-documentation) - [🤖 Compatibility with Meilisearch](#-compatibility-with-meilisearch) - [🚀 Getting Started](#-getting-started) - [⚙️ Settings](#️-settings) - [🔍 Custom search](#-custom-search) - [🪛 Options](#-options) - [Meilisearch configuration & environment](#meilisearch-configuration--environment) - [Index configuration](#index-configuration) - [Custom attribute definition](#custom-attribute-definition) - [Custom primary key](#custom-primary-key) - [Conditional indexing](#conditional-indexing) - [Share a single index](#share-a-single-index) - [Queues & background jobs](#queues--background-jobs) - [Relations](#relations) - [Sanitize attributes](#sanitize-attributes) - [UTF-8 encoding](#utf-8-encoding) - [Manual operations](#manual-operations) - [Indexing & deletion](#indexing--deletion) - [Access the underlying index object](#access-the-underlying-index-object) - [Development & testing](#development--testing) - [⚙️ Development workflow & contributing](#️-development-workflow--contributing) - [👏 Credits](#--credits) ## 📖 Documentation The whole usage of this gem is detailed in this README. To learn more about Meilisearch, check out our [Documentation](https://docs.meilisearch.com/learn/tutorials/getting_started.html) or our [API References](https://docs.meilisearch.com/reference/api/). ## 🤖 Compatibility with Meilisearch This package only guarantees the compatibility with the [version v0.27.0 of Meilisearch](https://github.com/meilisearch/meilisearch/releases/tag/v0.27.0). ## 🔧 Installation This package requires Ruby version 2.6.0 or later and Rails 5.2 or later. With `gem` in command line: ```bash gem install meilisearch-rails ``` In your `Gemfile` with [bundler](https://bundler.io/): ```ruby source 'https://rubygems.org' gem 'meilisearch-rails' ``` ### Run Meilisearch There are many easy ways to [download and run a Meilisearch instance](https://docs.meilisearch.com/reference/features/installation.html#download-and-launch). For example, if you use Docker: ```bash docker pull getmeili/meilisearch:latest # Fetch the latest version of Meilisearch image from Docker Hub docker run -it --rm -p 7700:7700 getmeili/meilisearch:latest meilisearch --master-key=masterKey ``` NB: you can also download Meilisearch from **Homebrew** or **APT**. ## 🚀 Getting Started #### Configuration Create a new file `config/initializers/meilisearch.rb` to setup your `MEILISEARCH_HOST` and `MEILISEARCH_API_KEY` ```ruby MeiliSearch::Rails.configuration = { meilisearch_host: 'YourMeilisearchHost', # example: http://localhost:7700 meilisearch_api_key: 'YourMeilisearchAPIKey', } ``` The gem is compatible with [ActiveRecord](https://github.com/rails/rails/tree/master/activerecord), [Mongoid](https://github.com/mongoid/mongoid) and [Sequel](https://github.com/jeremyevans/sequel). #### Add documents The following code will create a `Book` index and add search capabilities to your `Book` model. ```ruby class Book < ActiveRecord::Base include MeiliSearch::Rails meilisearch do attribute :title, :author # only the attributes 'title', and 'author' will be sent to Meilisearch # all attributes will be sent to Meilisearch if block is left empty end end ``` ⚠️ Note that even if you want to use all the default options, you must declare an empty `meilisearch` block in your model. #### Basic Backend Search We **strongly recommend the use of front-end search** through our [JavaScript API Client](https://github.com/meilisearch/meilisearch-js/) or [Instant Meilisearch plugin](https://github.com/meilisearch/instant-meilisearch) Search returns ORM-compliant objects reloaded from your database. ```ruby # Meilisearch is typo-tolerant: hits = Book.search('harry pottre') hits.each do |hit| puts hit.title puts hit.author end ``` #### Backend Pagination This gem supports: - [kaminari](https://github.com/amatsuda/kaminari) - [pagy](https://github.com/ddnexus/pagy) - [will_paginate](https://github.com/mislav/will_paginate). Specify the `:pagination_backend` in the configuration file: ```ruby MeiliSearch::Rails.configuration = { meilisearch_host: 'YourMeilisearchHost', meilisearch_api_key: 'YourMeilisearchAPIKey', pagination_backend: :kaminari #:will_paginate } ``` Then, as soon as you use the `search` method, the returning results will be paginated: ```ruby # controller @hits = Book.search('harry potter') # views <% @hits.each do |hit| %> <%= hit.title %> <%= hit.author %> <% end %> <%= paginate @hits %> # if using kaminari <%= will_paginate @hits %> # if using will_paginate ``` The **number of hits per page defaults to 20**, you can customize it by adding the `hits_per_page` parameter to your search: ```ruby Book.search('harry potter', hits_per_page: 10) ``` #### Extra Configuration Requests made to Meilisearch may timeout and retry. To adapt the behavior to your needs, you can change the parameters during configuration: ```ruby MeiliSearch::Rails.configuration = { meilisearch_host: 'YourMeilisearchHost', meilisearch_api_key: 'YourMeilisearchAPIKey', timeout: 2, max_retries: 1, } ``` ## ⚙️ Settings You can configure the index settings by adding them inside the `meilisearch` block as shown below: ```ruby class Book < ApplicationRecord include MeiliSearch::Rails meilisearch do searchable_attributes [:title, :author, :publisher, :description] filterable_attributes [:genre] sortable_attributes [:title] ranking_rules [ 'proximity', 'typo', 'words', 'attribute', 'sort', 'exactness', 'publication_year:desc' ] synonyms nyc: ['new york'] # The following parameters are applied when calling the search() method: attributes_to_highlight ['*'] attributes_to_crop [:description] crop_length 10 end end ``` Check the dedicated section of the documentation, for more information on the [settings](https://docs.meilisearch.com/reference/features/settings.html). ## 🔍 Custom search All the supported options are described in the [search parameters](https://docs.meilisearch.com/reference/features/search_parameters.html) section of the documentation. ```ruby Book.search('Harry', attributes_to_highlight: ['*']) ``` 👉 Don't forget that `attributes_to_highlight`, `attributes_to_crop`, and `crop_length` can be set up in the `meilisearch` block of your model. ## 🔍 Sorted search As an example of how to use the sort option, here is how you could achieve returning all books sorted by title in ascending order: ```ruby Book.search('*', sort: ['title:asc']) ``` 👉 Don't forget to set up the `sortable_attributes` option in the `meilisearch` block of your model. ## 🪛 Options ### Meilisearch configuration & environment #### Custom index_uid By default, the **index_uid** will be the class name, e.g. `Book`. You can customize the index_uid by using the `index_uid:` option. ```ruby class Book < ActiveRecord::Base include MeiliSearch::Rails meilisearch index_uid: 'MyCustomUID' end ``` #### Index UID according to the environment You can suffix the index UID with the current Rails environment using one of the following options: By defining directly in your model: ```ruby class Book < ActiveRecord::Base include MeiliSearch::Rails meilisearch per_environment: true end ``` Or setting it globally: ```ruby MeiliSearch::Rails.configuration = { meilisearch_host: 'YourMeilisearchHost', meilisearch_api_key: 'YourMeilisearchAPIKey', per_environment: true } ``` Both options will make your index name look like this `"Book_#{Rails.env}"`. ### Index configuration #### Custom attribute definition You can add a custom attribute by using the `add_attribute` option or by using a block. ⚠️ When using custom attributes, the gem is not able to detect changes on them. Your record will be pushed to the API even if the custom attribute didn't change. To prevent this behavior, you can create a `will_save_change_to_#{attr_name}?` method. ```ruby class Author < ApplicationRecord include MeiliSearch::Rails meilisearch do attribute :first_name, :last_name attribute :full_name do "#{first_name} #{last_name}" end add_attribute :full_name_reversed end def full_name_reversed "#{last_name} #{first_name}" end def will_save_change_to_full_name? will_save_change_to_first_name? || will_save_change_to_last_name? end def will_save_change_to_full_name_reversed? will_save_change_to_first_name? || will_save_change_to_last_name? end end ``` #### Custom primary key By default, the primary key is based on your record's id. You can change this behavior by specifying the `primary_key:` option. Note that the primary key must have a **unique value**. ```ruby class Book < ActiveRecord::Base include MeiliSearch::Rails meilisearch primary_key: 'ISBN' end ``` #### Conditional indexing You can control if a record must be indexed by using the `if:` or `unless:` options.
As soon as you use those constraints, `add_documents` and `delete_documents` calls will be performed in order to keep the index synced with the DB. To prevent this behavior, you can create a `will_save_change_to_#{attr_name}?` method. ```ruby class Book < ActiveRecord::Base include MeiliSearch::Rails meilisearch if: :published?, unless: :premium? def published? # [...] end def premium? # [...] end def will_save_change_to_published? # return true only if you know that the 'published' state changed end end ``` ##### Target multiple indexes You can index a record in several indexes using the `add_index` option: ```ruby class Book < ActiveRecord::Base include MeiliSearch::Rails PUBLIC_INDEX_UID = 'Books' SECURED_INDEX_UID = 'PrivateBooks' # store all books in index 'SECURED_INDEX_UID' meilisearch index_uid: SECURED_INDEX_UID do searchable_attributes [:title, :author] # store all 'public' (released and not premium) books in index 'PUBLIC_INDEX_UID' add_index PUBLIC_INDEX_UID, if: :public? do searchable_attributes [:title, :author] end end private def public? released? && !premium? end end ``` #### Share a single index You may want to share an index between several models. You'll need to ensure you don't have any conflict with the `primary_key` of the models involved. ```ruby class Cat < ActiveRecord::Base include MeiliSearch::Rails meilisearch index_uid: 'Animals', primary_key: :ms_id private def ms_id "cat_#{primary_key}" # ensure the cats & dogs primary_keys are not conflicting end end class Dog < ActiveRecord::Base include MeiliSearch::Rails meilisearch index_uid: 'Animals', primary_key: :ms_id private def ms_id "dog_#{primary_key}" # ensure the cats & dogs primary_keys are not conflicting end end ``` #### Queues & background jobs You can configure the auto-indexing & auto-removal process to use a queue to perform those operations in background. ActiveJob queues are used by default but you can define your own queuing mechanism: ```ruby class Book < ActiveRecord::Base include MeiliSearch::Rails meilisearch enqueue: true # ActiveJob will be triggered using a `meilisearch` queue end ``` 🤔 If you are performing updates and deletions in the background, a record deletion can be committed to your database prior to the job actually executing. Thus if you were to load the record to remove it from the database then your `ActiveRecord#find` will fail with a `RecordNotFound`. In this case you can bypass loading the record from **ActiveRecord** and just communicate with the index directly. With **ActiveJob**: ```ruby class Book < ActiveRecord::Base include MeiliSearch::Rails meilisearch enqueue: :trigger_job do attribute :title, :author, :description end def self.trigger_job(record, remove) MyActiveJob.perform_later(record.id, remove) end end class MyActiveJob < ApplicationJob def perform(id, remove) if remove # The record has likely already been removed from your database so we cannot # use ActiveRecord#find to load it. # We access the underlying Meilisearch index object. Book.index.delete_document(id) else # The record should be present. Book.find(id).index! end end end ``` With [**Sidekiq**](https://github.com/mperham/sidekiq): ```ruby class Book < ActiveRecord::Base include MeiliSearch::Rails meilisearch enqueue: :trigger_sidekiq_job do attribute :title, :author, :description end def self.trigger_sidekiq_job(record, remove) MySidekiqJob.perform_async(record.id, remove) end end class MySidekiqJob def perform(id, remove) if remove # The record has likely already been removed from your database so we cannot # use ActiveRecord#find to load it. # We access the underlying Meilisearch index object. Book.index.delete_document(id) else # The record should be present. Book.find(id).index! end end end ``` With [**DelayedJob**](https://github.com/collectiveidea/delayed_job): ```ruby class Book < ActiveRecord::Base include MeiliSearch::Rails meilisearch enqueue: :trigger_delayed_job do attribute :title, :author, :description end def self.trigger_delayed_job(record, remove) if remove record.delay.remove_from_index! else record.delay.index! end end end ``` #### Relations Extend a change to a related record. **With ActiveRecord**, you'll need to use `touch` and `after_touch`. ```ruby class Author < ActiveRecord::Base include MeiliSearch::Rails has_many :books # If your association uses belongs_to # - use `touch: true` # - do not define an `after_save` hook after_save { books.each(&:touch) } end class Book < ActiveRecord::Base include MeiliSearch::Rails belongs_to :author after_touch :index! meilisearch do attribute :title, :description, :publisher attribute :author do author.name end end end ``` With **Sequel**, you can use the `touch` plugin to propagate changes. ```ruby # app/models/author.rb class Author < Sequel::Model include MeiliSearch::Rails one_to_many :books plugin :timestamps # Can't use the associations since it won't trigger the after_save plugin :touch # Define the associations that need to be touched here # Less performant, but allows for the after_save hook to be triggered def touch_associations apps.map(&:touch) end def touch super touch_associations end end # app/models/book.rb class Book < Sequel::Model include MeiliSearch::Rails many_to_one :author after_touch :index! plugin :timestamps plugin :touch meilisearch do attribute :title, :description, :publisher attribute :author do author.name end end end ``` #### Sanitize attributes You can strip all HTML tags from your attributes with the `sanitize` option. ```ruby class Book < ActiveRecord::Base include MeiliSearch::Rails meilisearch sanitize: true end ``` #### UTF-8 encoding You can force the UTF-8 encoding of all your attributes using the `force_utf8_encoding` option. ```ruby class Book < ActiveRecord::Base include MeiliSearch::Rails meilisearch force_utf8_encoding: true end ``` ### Manual operations #### Indexing & deletion You can manually index a record by using the `index!` instance method and remove it by using the `remove_from_index!` instance method. ```ruby book = Book.create!(title: 'The Little Prince', author: 'Antoine de Saint-Exupéry') book.index! book.remove_from_index! book.destroy! ``` To reindex all your records, use the `reindex!` class method: ```ruby Book.reindex! # You can also index a subset of your records Book.where('updated_at > ?', 10.minutes.ago).reindex! ``` To delete all your records, use the `clear_index!` class method: ```ruby Book.clear_index! ``` #### Access the underlying index object To access the index object and use the [Ruby SDK](https://github.com/meilisearch/meilisearch-ruby) methods for an index, call the `index` class method: ```ruby index = Book.index # index.get_settings, index.number_of_documents ``` ### Development & testing #### Exceptions You can disable exceptions that could be raised while trying to reach Meilisearch's API by using the `raise_on_failure` option: ```ruby class Book < ActiveRecord::Base include MeiliSearch::Rails # Only raise exceptions in development environment. meilisearch raise_on_failure: Rails.env.development? end ``` #### Testing ##### Synchronous testing You can force indexing and removing to be synchronous by setting the following option: ```ruby class Book < ActiveRecord::Base include MeiliSearch::Rails meilisearch synchronous: true end ``` 🚨 This is only recommended for testing purposes, the gem will call the `wait_for_task` method that will stop your code execution until the asynchronous task has been processed by MeilSearch. ##### Disable auto-indexing & auto-removal You can disable auto-indexing and auto-removing setting the following options: ```ruby class Book < ActiveRecord::Base include MeiliSearch::Rails meilisearch auto_index: false, auto_remove: false end ``` You can temporarily disable auto-indexing using the without_auto_index scope: ```ruby Book.without_auto_index do # Inside this block, auto indexing task will not run. 1.upto(10000) { Book.create! attributes } end ``` ## ⚙️ Development workflow & contributing Any new contribution is more than welcome in this project! If you want to know more about the development workflow or want to contribute, please visit our [contributing guidelines](/CONTRIBUTING.md) for detailed instructions! ## 👏 Credits The provided features and the code base is inspired by [algoliasearch-rails](https://github.com/algolia/algoliasearch-rails/).

**Meilisearch** provides and maintains many **SDKs and Integration tools** like this one. We want to provide everyone with an **amazing search experience for any kind of project**. If you want to contribute, make suggestions, or just know what's going on right now, visit us in the [integration-guides](https://github.com/meilisearch/integration-guides) repository.