ruby-on-rails - Rails hash to array to hash 如何？

Question

在我的 Controller 中我有:

def index
    @title = 'asdsadas'
    @kategoris = Tag.where("name like ?", "%#{params[:q]}%")
    @kate = @kategoris.map(&:attributes).map{|d| d.map{|d| d.map{|d| d.dup.force_encoding("UTF-8") if d.respond_to?(:force_encoding) } } }
    respond_to do |format|
    format.html
    format.json { render :json => @kate }
    end
end

问题是它变成了一个数组:

[[["cached_slug","vinna-biljetter"],["created_at",null],["h1","inn biljetter - Delta i tävl

它应该是一个散列:

[{"cached_slug":"vinna-biljetter","created_at":"2011-04-28T10:33:05Z","h1":"inn biljetter - 

Answer 1

试试这个:

@kate = []
@kategoris.each do |kat|
  h = {}
  kat.attributes.each{|k,v| h[k] = v.respond_to?(:force_encoding) ? v.dup.force_encoding("UTF-8") : v }
  @kate << h
end

或

 @kate = @kategoris.map{|k| k.attributes.inject({}){|h,(k,v)| h[k] = v.respond_to?(:force_encoding) ? v.dup.force_encoding("UTF-8") : v;h}}

@kate 现在是一个哈希数组。