added support for phrases in quotes

app/models/searchable.rb

···
     scope :matching_terms, ->(terms) {
       where(
         (["(posts.text ~* ?)"] * (terms.length)).join(" AND "),
-        *(terms.map { |x| "\\y#{x}\\y" })
+        *(terms.map { |x| "\\y" + x.gsub(/\s+/, "\\s+") + "\\y" })
       )
     }
 

app/query_parser.rb

···
 class QueryParser
-  def parse_terms(query)
-    query = query.strip.gsub('%', "\\%")
-    query.split(/ +/)
+  attr_reader :terms
+
+  def initialize(query)
+    @terms = []
+    query = query.strip
+
+    while match = query.match(/".+?"/)
+      range = match.begin(0)...match.end(0)
+      phrase = query[range][1..-2].strip
+      query[range] = ' '
+      @terms << phrase
+    end
+
+    @terms += query.split(/ +/)
   end
 end

app/server.rb

···
       return json_error('MissingParameter', 'Missing "collection" parameter')
     end
 
-    terms = QueryParser.new.parse_terms(params[:query])
+    terms = QueryParser.new(params[:query]).terms
 
     collection = case params[:collection]
     when 'likes'   then user.likes