= Sunspot Autocomplete

Sunspot Autocomplete is a Rails plugin that lets you use Solr and Sunspot for handy autocompletion of your html text inputs.

=== Features:

* Autocomplete: Typing "clo" will yield results that start with "clo", like "cloudy with a chance of meatballs".
* Autosuggest: Typing "clo" will yield results that contain (or start with) "clo", like "cloudy with a chance of meatballs" and "Jumping like Clowns".
* Both features are case insenitive.
* A CSS based view. You can override some style rules to force your look and feel.

== Prerequisites

You should have solr, sunspot and sunspot_rails ON and running.

http://outoftime.github.com/sunspot

== Installation

gem "sunspot_autocomplete", ">= 0.0.3", :git => "git@github.com:xponrails/sunspot_autocomplete.git"

Copy the gem's assets to your assets directory.

== Usage

In your solr schema.xml, add the following field types inside the <types> tag:

  <fieldType name="autocomplete" class="solr.TextField" positionIncrementGap="100">
    <analyzer type="index">
      <tokenizer class="solr.KeywordTokenizerFactory"/>
      <filter class="solr.LowerCaseFilterFactory"/>
      <filter class="solr.EdgeNGramFilterFactory" minGramSize="1" maxGramSize="25" />
    </analyzer>
    <analyzer type="query">
      <tokenizer class="solr.KeywordTokenizerFactory"/>
      <filter class="solr.LowerCaseFilterFactory"/>
    </analyzer>
  </fieldType>
  <fieldType name="autosuggest" class="solr.TextField" positionIncrementGap="100">
    <analyzer type="index">
      <tokenizer class="solr.LetterTokenizerFactory"/>
      <filter class="solr.LowerCaseFilterFactory"/>
      <filter class="solr.EdgeNGramFilterFactory" minGramSize="1" maxGramSize="25" />
    </analyzer>
    <analyzer type="query">
      <tokenizer class="solr.LetterTokenizerFactory"/>
      <filter class="solr.LowerCaseFilterFactory"/>
    </analyzer>
  </fieldType>

Also in your solr schema.xml, add the following fields inside thw <fields> tag.

  <dynamicField name="*_ac" type="autocomplete" indexed="true"  stored="true"/>
  <dynamicField name="*_as" type="autosuggest" indexed="true"  stored="true"/>

To be able to autocomplete/autosuggest a model's attribute, call 'autocomplete'/'autosuggest' on it in its 'searchable' block. the field_name used (post_title and post_author in the following example) must be unique across all your autocomplete fields of the application.

  class Post < ActiveRecord::Base
    searchable do
      autocomplete :post_title, :using => :title
      autosuggest :post_author, :using => :author
    end
  end

In your application.js, Add the following lines.

    //= require solr-autocomplete/ajax-solr/core/Core
    //= require solr-autocomplete/ajax-solr/core/AbstractManager
    //= require solr-autocomplete/ajax-solr/managers/Manager.jquery
    //= require solr-autocomplete/ajax-solr/core/Parameter
    //= require solr-autocomplete/ajax-solr/core/ParameterStore
    //= require solr-autocomplete/jquery-autocomplete/jquery.autocomplete

Also, add the following line in your application.css to use the basic style included. Alternatively, you can override those style rules to force your design's look and feel.

   *= require solr-autocomplete/jquery.autocomplete

In your view, to create a text field with autocomplete:

  <%= autocomplete_text_field "post", "title", "http://127.0.0.1:8983/solr/", "post_title"%>

And to create a text field with autosuggest:

  <%= autosuggest_text_field "post", "author", "http://127.0.0.1:8983/solr/", "post_author"%>

You can view documentation for more advanced features of the helpers.