Tire configuration for partial word matching.

tire-search.rb

tire.search(tire_params, load: true) do
  query do
    # Assumes +term+ is the text you're searching for
    string term, default_field: 'title', default_operator: 'AND'
    match :title, term, type: 'phrase_prefix', max_expansions: 10
  end
end

tire-settings.rb

tire.settings analysis: {
  analyzer: {
    full_title: {
      filter: %w(standard lowercase asciifolding),
      type: 'custom',
      tokenizer: 'standard'
    },
    partial_title: {
      filter: %w(standard lowercase asciifolding title_ngram),
      type: 'custom',
      tokenizer: 'standard'
    }
  },
  filter: {
    title_ngram: {
      side: 'front',
      max_gram: 20,
      min_gram: 2,
      type: 'edgeNGram',
      token_chars: %w(letter digit whitespace)
    }
  }
} do
  tire.mapping do
    indexes :title, type: 'string', index_analyzer: 'partial_title', 
            search_analyzer: 'full_title'
  end
end