ruby on rails - Create nested records on put/post with accepts_nested_attributes_for -

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i have 2 models,

landscape:

class landscape < activerecord::base   has_many :images, :as => :imageable   accepts_nested_attributes_for :images, :allow_destroy => true     attr_accessible :id, :name, :city, :state, :zip, :gps, :images, :images_attributes, :address1    def autosave_associated_records_for_images      logger.info "in autosave"     images.each |image|       if new_image = image.find(image.id)         new_image.save!       else         self.images.build(image)       end     end   end end

image: 

class image < activerecord::base   belongs_to :imageable, :polymorphic => true end

i'm sending post , put requests iphone update/create landscape record json. here's example post request create new landscape record , new associated image record

{   "landscape":{     "id":0,     "name":"new landscape",     "city":"the city",     "state":"la",     "zip":"71457",     "images_attributes":[       {         "id":0,         "image_data":"image data image data image data",         "is_thumbnail":1       }      ],     "address1":"1800 fancy road"   }

}

when server receives this, spits out

activerecord::recordnotfound (couldn't find image id=0 landscape id=0):

so seems kind of circular reference issue, it's not clear how go fixing it. of interest autosave_associated_records_for_images doesn't ever seem called (also there no documentation function, had @ rails source).

i've read every post on accepts_nested_attributes_for no luck.

update

i have records creating now, can't rails pass image data image model. let me illustrate:

started post "/landscapes" 127.0.0.1 @ 2011-07-22 19:43:23 -0500   processing landscapescontroller#create json   parameters: {"landscape"=>{"name"=>"asdf", "id"=>0, "address1"=>"asdf", "city"=>"asdf", "images_attributes"=>[{"id"=>0, "image_data"=>"im bunch of image data image data image data", "is_thumbnail"=>1}]}}   sql (0.1ms)  begin   sql (1.6ms)  describe `landscapes`   arel (0.2ms)  insert `landscapes` (`address1`, `city`, `gps`, `name`, `state`, `zip`, `updated_at`, `created_at`) values (null, null, null, null, null, null, '2011-07-23 00:43:23', '2011-07-23 00:43:23')   sql (1.0ms)  describe `images`   arel (0.1ms)  insert `images` (`image_caption`, `image_data`, `is_thumbnail`, `created_at`, `updated_at`, `imageable_id`, `imageable_type`) values (null, null, null, '2011-07-23 00:43:23', '2011-07-23 00:43:23', 46, 'landscape')   sql (0.2ms)  commit completed 201 created in 37ms (views: 2.2ms | activerecord: 14.5ms)

that's happens when don't define autosave_asociated_records_for_images. however, if define so:

def autosave_associated_records_for_images   logger.info "in autosave"   logger.info images.to_s end

i see following output:

started post "/landscapes" 127.0.0.1 @ 2011-07-22 19:50:57 -0500   processing landscapescontroller#create json   parameters: {"landscape"=>{"name"=>"asdf", "id"=>0, "address1"=>"asdf", "city"=>"asdf", "images_attributes"=>[{"id"=>0, "image_data"=>"im bunch of image data image data image data", "is_thumbnail"=>1}]}}   sql (0.1ms)  begin   sql (1.6ms)  describe `landscapes`   arel (0.2ms)  insert `landscapes` (`address1`, `city`, `gps`, `name`, `state`, `zip`, `updated_at`, `created_at`) values (null, null, null, null, null, null, '2011-07-23 00:50:57', '2011-07-23 00:50:57') in autosave [#<image id: nil, image_caption: nil, image_data: nil, is_thumbnail: nil, created_at: nil, updated_at: nil, imageable_id: nil, imageable_type: "landscape">]   sql (0.2ms)  commit completed 201 created in 32ms (views: 2.2ms | activerecord: 2.1ms)

this strange! it's creating relationship properly, it's not populating database data i'm sending. ideas?

i never got either of solutions here work. did instead manually in controller looping through params.


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