error – Page 13 – What I Broke – Programming and Web Development

OpenSSL::PKey::RSAError Neither PUB key nor PRIV key:: nested asn1 error – Adaptive Payments Gem

Hey everyone,

I’ve been mucking around with PayPal for a while and decided to try out the adaptive_payments gem by Tommy Chheng. Unfortunately I ran into the following error:

OpenSSL::PKey::RSAError

Neither PUB key nor PRIV key:: nested asn1 error

It turns out that I’d simply skipped an important part of the readme file. The api_cert_file in the paypal_adaptive.yaml file should point to a file containing BOTH your paypal_cert_pem.txt and whatever your private key happens to be. This took an embarrassingly long time for me to figure out, so hopefully this will help some of you!

UPDATE
It turns out I still had this wrong, I was using the wrong certs. After sorting out a few more errors that I ran into after the one mentioned above I finally started getting a response from Paypal, unfortunately it was another error message:

Authentication failed. API credentials are incorrect

It turns out I was using the wrong certs. If you’ve run into the same problem you’ll need to go to Profile > Request API Credentials > Option 2 (Request API credentials to create your own API username and password.). Then download the cert and point to this.

UPDATE
Hey everyone, just another update to this. If you happened to be following the railscast on PayPal before attempting to use the gem, you may not get the option to download the certs mentioned above. To get around this, simply remove your existing certificates (Profile > API Access > Option 2 > Remove > Remove). You should now see the ‘Request API Certificate Option’.

Sorry about the confusing post, but there’s a *slight* chance it might be able to help someone else who runs into the same problem.
Cheers

Cannot Generate Tempfile – Ruby on Rails

Ran into the following problem, still not too sure what caused it but this seems to have fixed it:

Error

cannot generate tempfile `/home/chris/cartsite/tmp/cache/assets/sprockets%2Fd585a06e2ee6203ccb04c8b84150d14d20120804-8682-7q77nb-9'

Just run the following:

$ rake tmp:clear

Let me know if you come across the cause, I’d be interested to know.

has_secure_password error – Ruby on Rails

Ran into the following error while using has_secure_password:

/usr/lib/ruby/gems/1.8/gems/bundler-1.0.21/lib/bundler/rubygems_integration.rb:143:in `gem': bcrypt-ruby is not part of the bundle. Add it to Gemfile. (Gem::LoadError)

Thankfully the error is pretty self explanatory, you simply have to add the gem bcrypt-ruby:

chris@chris-VirtualBox:~/cartsite$ gedit Gemfile

#Add gem to Gemfile
...
gem 'bcrypt-ruby'
...

#Run bundle install
chris@chris-VirtualBox:~/cartsite$ bundle install
Using rake (0.9.2.2) 
Using i18n (0.6.0) 
Using multi_json (1.3.6) 
...
Using uglifier (1.2.4) 
Your bundle is complete! Use `bundle show [gemname]` to see where a bundled gem is installed.

Then you should be right to go, let me know if there are any issues.

sqlite3.h is missing – Ruby on Rails

Just an error I ran into while running bundle install on a new ubuntu virtual:

Gem::Installer::ExtensionBuildError: ERROR: Failed to build gem native extension.

/usr/bin/ruby1.8 extconf.rb 
checking for sqlite3.h... no
sqlite3.h is missing. Try 'port install sqlite3 +universal'
or 'yum install sqlite-devel' and check your shared library search path (the
location where your sqlite3 shared library is located).
*** extconf.rb failed ***
Could not create Makefile due to some reason, probably lack of
necessary libraries and/or headers.  Check the mkmf.log file for more
details.  You may need configuration options.

Provided configuration options:
	--with-opt-dir
	--without-opt-dir
	--with-opt-include
	--without-opt-include=${opt-dir}/include
	--with-opt-lib
	--without-opt-lib=${opt-dir}/lib
	--with-make-prog
	--without-make-prog
	--srcdir=.
	--curdir
	--ruby=/usr/bin/ruby1.8
	--with-sqlite3-dir
	--without-sqlite3-dir
	--with-sqlite3-include
	--without-sqlite3-include=${sqlite3-dir}/include
	--with-sqlite3-lib
	--without-sqlite3-lib=${sqlite3-dir}/lib
	--enable-local
	--disable-local

To fix it, simply run the following:

sudo apt-get install libsqlite3-dev

Could not find a JavaScript Runtime – Ruby on Rails

Ran into the following issue today starting a new app on a virtual Ubuntu box:

Could not find a JavaScript runtime

Thankfully there’s a quick fix, simply install nodejs:


chris@chris-VirtualBox:~/Desktop$ sudo apt-get install nodejs


Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following packages were automatically installed and are no longer required:
  postgresql-client-8.4 postgresql-8.4
Use 'apt-get autoremove' to remove them.
The following extra packages will be installed:
  libc-ares2 libev4 libv8-3.1.8.22
The following NEW packages will be installed:
  libc-ares2 libev4 libv8-3.1.8.22 nodejs
0 upgraded, 4 newly installed, 0 to remove and 77 not upgraded.
Need to get 1,938 kB of archives.
After this operation, 6,066 kB of additional disk space will be used.
Do you want to continue [Y/n]? y
Get:1 http://au.archive.ubuntu.com/ubuntu/ oneiric/universe libv8-3.1.8.22 i386 3.1.8.22-1ubuntu2 [1,386 kB]
Get:2 http://au.archive.ubuntu.com/ubuntu/ oneiric/main libc-ares2 i386 1.7.4-1 [37.3 kB]        
Get:3 http://au.archive.ubuntu.com/ubuntu/ oneiric/universe libev4 i386 1:4.04-1 [29.5 kB]       
Get:4 http://au.archive.ubuntu.com/ubuntu/ oneiric/universe nodejs i386 0.4.9-1ubuntu3 [486 kB]  
Fetched 1,938 kB in 18s (106 kB/s)                                                               
Selecting previously deselected package libv8-3.1.8.22.
(Reading database ... 158699 files and directories currently installed.)
Unpacking libv8-3.1.8.22 (from .../libv8-3.1.8.22_3.1.8.22-1ubuntu2_i386.deb) ...
Selecting previously deselected package libc-ares2.
Unpacking libc-ares2 (from .../libc-ares2_1.7.4-1_i386.deb) ...
Selecting previously deselected package libev4.
Unpacking libev4 (from .../libev4_1%3a4.04-1_i386.deb) ...
Selecting previously deselected package nodejs.
Unpacking nodejs (from .../nodejs_0.4.9-1ubuntu3_i386.deb) ...
Processing triggers for doc-base ...
Processing 1 added doc-base file...
Registering documents with scrollkeeper...
Processing triggers for man-db ...
Setting up libv8-3.1.8.22 (3.1.8.22-1ubuntu2) ...
Setting up libc-ares2 (1.7.4-1) ...
Setting up libev4 (1:4.04-1) ...
Setting up nodejs (0.4.9-1ubuntu3) ...
update-alternatives: using /usr/bin/node to provide /usr/bin/js (js) in auto mode.
Processing triggers for libc-bin ...
ldconfig deferred processing now taking place
chris@chris-VirtualBox:~/Desktop$

Let me know if you have any issues.

undefined method `render_with_scope’ (Devise) – Ruby on Rails

I ran into the following error while trying to implement ReCaptcha with devise:

undefined method `render_with_scope' for #

The offending code:

class Users::RegistrationsController < Devise::RegistrationsController
  def create

    #Verify captcha
    if verify_recaptcha
      super
    else
      build_resource
      clean_up_passwords(resource)
      flash.now[:alert] = "There was an error with the recaptcha code below. Please re-enter the code."
      render_with_scope :new
    end
  end
end

This error was caused by the fact that I’d followed an out of date tutorial. Devise no longer uses render_with_scope. Thankfully the solution was pretty straight forward, simply switch render_with_scope with render:

class Users::RegistrationsController < Devise::RegistrationsController
  def create

    #Verify captcha
    if verify_recaptcha
      super
    else
      build_resource
      clean_up_passwords(resource)
      flash.now[:alert] = "There was an error with the recaptcha code below. Please re-enter the code."
      render :new
    end
  end
end

There’s a brief explanation available at the following link: http://groups.google.com/group/plataformatec-devise/browse_thread/thread/596381554ba1fb04

POST http://192.168.1.3:3000 406 (Not Acceptable) – AJAX with Ruby on Rails

Just a quick post on an error I ran into today when trying to create an AJAX image upload with Ruby on Rails. When submitting an AJAX form I received the following error:

POST http://192.168.1.3:3000/uploads 406 (Not Acceptable)

It turns out that there is a fairly simple (and admittedly obvious) solution. Ensure that your controller has an appropriate response for JavaScript files:

i.e.
Form:

{:multipart => true}, :remote => 'true') do |f| %>
  
    
       prohibited this image from being saved:
      
        
          
            
        
      
    
  
  
    
      
    
  
  
     'button' %>
  
   @upload.product_id %>

Form JavaScript:

/* Wait for document to load */
$(document).ready(function() {
    create_ajax_form('new_upload');
})

/* Create an ajax form */
function create_ajax_form(form_id){

   //Handle ajax submission
   $j('#' + form_id).submit(function(){

       //Send for data
       $j.post($j(this).attr("action"), $j(this).serialize(), null, "script");

       //Return false
       return false;
   });
}

Controller Action:

#Create an upload
  def create

    #Create vars
    @upload = Upload.new(params[:upload])

    #Create responses
    respond_to do |format|
      if @upload.save

        #Retrieve product
        @product = Product.find_by_id(@upload.product_id)

        #Create success responses
        format.html { redirect_to @product, :notice => 'Image Added Successfully!'}
        format.js
      else

        #Create error responses
        format.html { render :action => 'new'}
        format.js
      end
    end
  end

JavaScript Response:

alert('test');

undefined method `merge’ for 5:Fixnum – Hidden Field

Just a quick post on an error I ran into today while using hidden fields:

undefined method `merge' for 5:Fixnum

27:   
28:      'button' %>
29:   
30:   
31: 
32:

Thankfully this is an easy fix, simply amend your code as follows:


     'button' %>

    @upload.product_id %>

And that’s all there is to it, let me know if there are any issues.

Not Recognised by the ‘identify’ command – Paperclip

Just a quick post on another problem I ran into while setting up PaperClip. When attempting to submit a form WITHOUT an image I received the following error message:

 
Assets asset /tmp/stream20120218-22611-dgnkr-0.exe is not recognized by the 'identify' command.

Apparently the most common cause of this issue is one of two things:

#1: You don’t have RMagick installed
The easiest fix for this is to simply install the rmagick gem. Simply add rmagick to your Gemfile and run bundle install. Restart your server and you should be ready to go.

#2: Your command_path isn’t set correctly
Run the following command from your console:

chris@chris-VirtualBox:~/site$ which identify
/usr/bin/identify

Then add the path that is returned to your environment settings:

Paperclip.options[:command_path] = "/usr/bin"

#3: If all else fails

If none of the above seem to be causing your issue, try adding the following to your model:

 def asset?
    !(asset_content_type =~ /^image.*/).nil?
  end

This will simply prevent the file being processed if it’s not an image, avoiding the issue all together. Hopefully this’ll help someone out, let me know if you come across any other solutions.

UPDATE:
Apparently a more recent cause of this issue is an update to the cocaine gem, rolling back to version 0.3.2 appears to resolve the issue. Thanks to Ahmed and Fabrice for bringing it to my attention:
https://github.com/thoughtbot/paperclip/issues/1038
http://stackoverflow.com/a/12760881/522859

PaperClip Issues – Ruby on Rails

I finally decided to replace all my existing code to handle images with Paperclip. I was following the screencast by Emerson Lackey, #134 Paperclip, however I ran into a couple of issues. Thankfully they were all very easily fixed, and probably wouldn’t have occurred at all if I’d simply watched the whole screencast instead of trying to rush on ahead.

Issue #1:
The first issue I encountered was that my asset fields weren’t appearing on the page:

I spent way too much time trying to work this one out, especially considering how obvious the solution is – the screencast is simply missing an “=” after the initial “<%" in "<% f.fields_for". Simply amend it as follows:

Issue #2:
The second one is actually encountered and addressed by Emerson himself. Unfortunately I started trying to find a solution before seeing his, so just in case someone else does a Google search I’ll include the issue here:

undefined method `symbolize_keys!' for "/system/assets/1/original/mack_truck.jpg?1329550205":String

The problem here is simply that the parenthesis are in the wrong place, simply amend your code as follows:

Anyway, hopefully this helps someone else out – let me know if there are any issues.

Update: Don’t name your model assets!
Unfortunately I followed the tutorials naming example and called my model Asset. While this may have been fine in earlier version of rails it causes quirky conflicts with the asset pipeline. I strongly encourage you to use a different name i.e. Uploads