Ruby on Rails – 基于查询在数据库中搜索

我有一个简单的表单，我在其中设置了一个我想浏览的查询，例如panasonic viera 。 这是我在数据库中搜索术语的方式：

Product.where("name ilike ?", "%#{params[:q]}%").order('price') 

该查询看起来像％panasonic viera％ ，但我需要以这种方式搜索查询： ％panasonic％viera％ – 我需要找到所有产品，标题中的字段是panasonic或viera ……但是如何制作这个查询？

Answer 1

一种解决方案是将查询分解为单个术语，并构建一组由OR连接的数据库查询。

 terms = params[:q].split query = terms.map { |term| "name like '%#{term}%'" }.join(" OR ") Product.where(query).order('price') 

Answer 2

如果你正在使用PostgreSQL，你可以使用pg_search gem。 它支持全文搜索，带有选项any_word ：

 Setting this attribute to true will perform a search which will return all models containing any word in the search terms. 

来自pg_search示例：

 class Number < ActiveRecord::Base include PgSearch pg_search_scope :search_any_word, :against => :text, :using => { :tsearch => {:any_word => true} } pg_search_scope :search_all_words, :against => :text end one = Number.create! :text => 'one' two = Number.create! :text => 'two' three = Number.create! :text => 'three' Number.search_any_word('one two three') # => [one, two, three] Number.search_all_words('one two three') # => [] 

Answer 3

通过ARel怎么样

 def self.search(query) words = query.split(/\s+/) table = self.arel_table predicates = [] words.each do |word| predicates << table[:name].matches("%#{word}%") end if predicates.size > 1 first = predicates.shift conditions = Arel::Nodes::Grouping.new(predicates.inject(first) {|memo, expr| Arel::Nodes::Or.new(memo, expr)}) else conditions = predicates.first end where(conditions).to_a end 

Answer 4

这不行？

  WHERE name LIKE "panasonic" OR name LIKE "viera"