Rails - Sep 2009 - A basic collections/hash question

Hi,

I give up trying. I need to ask this basic question about collections
and hashes.

I''m trying to do a batch update of records using XML:

<?xml version="1.0" encoding="UTF-8"?>
<subscribers>
<subscriber>
  <imei>111</imei>
  <imsi>111</imsi>
  <msidsm>111</msidsm>
  <name>Six</name>
</subscriber>
<subscriber>
  <imei>777</imei>
  <imsi>777</imsi>
  <msidsm>777</msidsm>
  <name>Seven</name>
</subscriber>
</subscribers>

I have this in the routes:

map.resources :subscribers, :collection => {:import => :post}

When I post the XML I get:

Processing SubscribersController#import (for 127.0.0.1 at 2009-09-09
12:18:22) [POST]
  Parameters: {"action"=>"import",
"subscribers"=>{"subscriber"=>[{"name"=>"Six",
"msidsm"=>"111",
"imsi"=>"111", "imei"=>"111"},
{"name"=>"Seven", "msidsm"=>"777",
"imsi"=>"777", "imei"=>"777"}]},
"controller"=>"subscribers"}

--------------------------------

How can I easily create subscriber records for those I send in the XML?
I''ve managed to extract the data but it fails when only one subscriber
element is included in the XML.

What would be the best way to do this?

Thanks.
-- 
Posted via http://www.ruby-forum.com/.

params[:subscribers].each do |subscriber_hash|
   my_record = SubscriberModel.new(subscriber_hash)
   my_record.save
end if params[:subscribers]

Assuming that SubscriberModel is an activerecord model that maps to a
table with similar layout as the hash.

Otherwise, define your own class with an initializer method like so
and do whatever you want with it.

class SubscriberModel
  attr_accessor :name, :msidsm, :imsi, :imei
  def initialize(init_hash={})
    @name = init_hash["name"]
    @msidsm = init_hash["msidsm"]
    @imsi = init_hash["imsi"]
    @imei = init_hash["imei"]
  end
end

----------------------

Alternatively, I could be way off base.  Let me know if it works for
you. :p


On Sep 9, 2:23 pm, comopasta Gr
<rails-mailing-l...-ARtvInVfO7ksV2N9l4h3zg@public.gmane.org>
wrote:
> Hi,
>
> I give up trying. I need to ask this basic question about collections
> and hashes.
>
> I''m trying to do a batch update of records using XML:
>
> <?xml version="1.0" encoding="UTF-8"?>
> <subscribers>
> <subscriber>
>   <imei>111</imei>
>   <imsi>111</imsi>
>   <msidsm>111</msidsm>
>   <name>Six</name>
> </subscriber>
> <subscriber>
>   <imei>777</imei>
>   <imsi>777</imsi>
>   <msidsm>777</msidsm>
>   <name>Seven</name>
> </subscriber>
> </subscribers>
>
> I have this in the routes:
>
> map.resources :subscribers, :collection => {:import => :post}
>
> When I post the XML I get:
>
> Processing SubscribersController#import (for 127.0.0.1 at 2009-09-09
> 12:18:22) [POST]
>   Parameters: {"action"=>"import",
>
"subscribers"=>{"subscriber"=>[{"name"=>"Six",
"msidsm"=>"111",
> "imsi"=>"111",
"imei"=>"111"}, {"name"=>"Seven",
"msidsm"=>"777",
> "imsi"=>"777",
"imei"=>"777"}]},
"controller"=>"subscribers"}
>
> --------------------------------
>
> How can I easily create subscriber records for those I send in the XML?
> I''ve managed to extract the data but it fails when only one
subscriber
> element is included in the XML.
>
> What would be the best way to do this?
>
> Thanks.
> --
> Posted viahttp://www.ruby-forum.com/.

Hi Mukund, thanks for the suggestions!

I did try
> params[:subscribers].each do |subscriber_hash|
     puts subscriber_hash
>    my_record = Subscriber.new(subscriber_hash)
>    my_record.save
> end if params[:subscribers]
The result is that subscriber_hash results in

subscriber
nameSixmsidsm555imsi555imei555
nameSevenmsidsm444imsi444imei444

Ok so far I guess. But then Subscriber.new(subscriber_hash) fails as 
seen below:

Processing SubscribersController#import (for 127.0.0.1 at 2009-09-09 
15:36:05) [POST]
  Parameters: {"action"=>"import", 
"subscribers"=>{"subscriber"=>[{"name"=>"Six",
"msidsm"=>"555",
"imsi"=>"555", "imei"=>"555"},
{"name"=>"Seven", "msidsm"=>"444",
"imsi"=>"444", "imei"=>"444"}]},
"controller"=>"subscribers"}
...
...
NoMethodError (undefined method `stringify_keys!'' for 
#<Array:0xb6041008>):
  app/controllers/subscribers_controller.rb:49:in `new''
  app/controllers/subscribers_controller.rb:49:in `import''
  app/controllers/subscribers_controller.rb:47:in `each''
  app/controllers/subscribers_controller.rb:47:in `import''
  /usr/lib/ruby/1.8/webrick/httpserver.rb:104:in `service''
  /usr/lib/ruby/1.8/webrick/httpserver.rb:65:in `run''
  /usr/lib/ruby/1.8/webrick/server.rb:173:in `start_thread''
  /usr/lib/ruby/1.8/webrick/server.rb:162:in `start''
  /usr/lib/ruby/1.8/webrick/server.rb:162:in `start_thread''
  /usr/lib/ruby/1.8/webrick/server.rb:95:in `start''
  /usr/lib/ruby/1.8/webrick/server.rb:92:in `each''
  /usr/lib/ruby/1.8/webrick/server.rb:92:in `start''
  /usr/lib/ruby/1.8/webrick/server.rb:23:in `start''
  /usr/lib/ruby/1.8/webrick/server.rb:82:in `start''

Cheers.


-- 
Posted via http://www.ruby-forum.com/.

Hi,

I managed to get over this problem.

The code I''m using now is:

data = params[:subcribers][:subscriber]
(data.is_a?(Array) ? data : [data]).each do |d|
   my_record = Report.create(d)
end

This works fine wether I have only one subscriber or many in the XML
Next will be doing a batch update. But that should be a different story 
since my problem was doing the iteration with the data.

I found the hints from here:
http://railsforum.com/viewtopic.php?id=10888

Regards.
-- 
Posted via http://www.ruby-forum.com/.