ruby - Only Last Parameter being passed into Object -

my app supposed create image object each image selected in input field of form. it–the create action– iterates on :picture param , each entry, supposed create new image object. however, seems create image object last image selected in input box. why not functioning properly?

controller

class admin::imagescontroller < applicationcontroller     respond_to :html, :json     #before_filter :split_hash, :only => [ :create, :update ]     def index         @album = album.find(params[:album_id])         @images = @album.images.all     end     def new         @album = album.find(params[:album_id])         @image = @album.images.new     end     def create         params[:image][:picture].each |image|             @album = album.find(params[:album_id])             @params = {}             @params['picture'] = image             @image = @album.images.build(@params)        end         if @image.save             flash[:notice] = "successfully added image!"             redirect_to [:admin, @album, :images]         else             render "new"             flash[:notice] = "did not add image :("         end     end     def show         @album = album.find(params[:album_id])         @image = @album.images.find(params[:id])     end     def edit         @album = album.find(params[:album_id])         @image = @album.images.find(params[:id])     end     def update         @album = album.find(params[:album_id])         @image = @album.images.find(params[:id])         if @image.update_attributes(params[:image])             flash[:notice] = "successfully updated image"             redirect_to [:admin, @album, :images]         else             render "edit"         end     end     def destroy         @album = album.find(params[:album_id])         @image = @album.images.find(params[:id])         @image.destroy         @albumid = @album.id         @id = @image.id         fileutils.remove_dir("#{rails.root}/public/uploads/image/picture/#{@albumid}/#{@id}", :force => true)         redirect_to admin_album_images_path(@album)     end   #     def split_hash   #         @album = album.find(params[:album_id])         # @image = @album.images   #     array_of_pictures = params[:image][:picture]   #     array_of_pictures.each |pic|   #         size = array_of_pictures.size.to_i   #         size.times {@image.build(params[:image], :picture => pic)}   #         @image.save         # end   #     end end 

view form

<%= form_for([:admin, :album, @image], :html => {:multipart => true}) |f| %>         <%= f.hidden_field :album_id, :value => @album.id %>         <%= f.file_field :picture, :multiple => true %>         <%= f.submit "submit" %> <%end%> 

request params on submit

{"image"=>{"picture"=>[#<actiondispatch::http::uploadedfile:0x10c986d88 @tempfile=#<file:/var/folders/bx/6z1z5yks56j40v15n43tjh1c0000gn/t/rackmultipart20130404-53101-3c2whv-0>,  @headers="content-disposition: form-data; name=\"image[picture][]\"; filename=\"background-pic.jpg\"\r\ncontent-type: image/jpeg\r\n",  @content_type="image/jpeg",  @original_filename="background-pic.jpg">,  #<actiondispatch::http::uploadedfile:0x10c986d60 @tempfile=#<file:/var/folders/bx/6z1z5yks56j40v15n43tjh1c0000gn/t/rackmultipart20130404-53101-bvdysw-0>,  @headers="content-disposition: form-data; name=\"image[picture][]\"; filename=\"bible-banner.png\"\r\ncontent-type: image/png\r\n",  @content_type="image/png",  @original_filename="bible-banner.png">],  "album_id"=>"10"},  "authenticity_token"=>"dr8gmczoqo4dqkgkm4on2ums8iorq68vokjw0e4vvly=",  "commit"=>"submit",  "utf8"=>"✓",  "album_id"=>"10"} 

i appreciate can share!

@album.images.build create object, not save database. when exit each loop, @image last image built (which last image in params).

using @album.images.create save image database persisted expect; however, logic after each block won't valid anymore, since you'll verifying last image saved. should check if each image saved inside of each block, , somehow record ones unsuccessful if want do.