karmi · August 29, 2015 14:01 · May 18, 2014 · May 18, 2014 · May 17, 2014 · May 17, 2014
diff --git a/README.markdown b/README.markdown
@@ -0,0 +1,36 @@
+# Store file uploads in the database
+
+This gem allows to store [`carrierwave`](https://github.com/carrierwaveuploader/carrierwave)
+uploads in the database, eg. on platforms with ephemeral filesystems like Heroku.
+
+## Installation
+
+```ruby
+# In: Gemfile
+gem 'carrierwave-blob', git: "https://gist.github.com/f1dc8c75d67b92b23a55.git"
+```
+
+## Usage
+
+1. Setup your uploader to use the _blob_ storage:
+
+```ruby
+# In: app/uploaders/picture_uploader.rb
+storage CarrierWave::Storage::Blob
+```
+
+2. Generate a migration for your model:
+
+```ruby
+rails generate carrier_wave_blob_migration Idea
+```
+
+3. Execute the migrations:
+
+```ruby
+rake db:migrate
+```
+
+-----
+
+Created during [RailsGirls Prague](http://railsgirls.cz)
diff --git a/carrierwave-blob-generator.rb b/carrierwave-blob-generator.rb
@@ -0,0 +1,20 @@
+class CarrierWaveBlobMigrationGenerator < Rails::Generators::NamedBase
+  desc    "Creates a migration to update column type to text"
+  argument :fieldname, default: 'picture'
+
+  check_class_collision
+
+  def create_migration_file
+    migration_nr = ActiveRecord::Migration.next_migration_number(Time.now.to_i)
+    create_file "db/migrate/#{migration_nr}_update_#{name.downcase}_#{fieldname.downcase}_column.rb",
+    <<-CONTENT.gsub(/^\s{6}/, '')
+      class Update#{name.capitalize}#{fieldname.capitalize}Column < ActiveRecord::Migration
+        def change
+          change_column :#{name.tableize}, :#{fieldname}, :text, limit: nil
+        end
+      end
+
+    CONTENT
+    say "Don't forget to run `rake db:migrate`!", :yellow
+  end
+end
diff --git a/carrierwave-blob.rb b/carrierwave-blob.rb
@@ -10,7 +10,7 @@ def initialize(content)
         end
 
         def url(options={})
-          @content    
+          @content
         end
 
         def to_s
@@ -32,3 +32,9 @@ def retrieve!(identifier=nil)
 
   end
 end
+
+class CarrierWaveBlobRailtie < Rails::Railtie
+  generators do
+    require 'carrierwave-blob-generator'
+  end
+end
diff --git a/carrierwave-blob.rb b/carrierwave-blob.rb
@@ -22,11 +22,11 @@ def store!(file)
         # require "pry"; binding.pry
         type = uploader.file.content_type
         blob = Base64.encode64(self.uploader.file.read)
-        uploader.model.update_columns picture: "data:#{type};base64,#{blob}"
+        uploader.model.update_columns self.uploader.mounted_as => "data:#{type};base64,#{blob}"
       end
 
       def retrieve!(identifier=nil)
-        Content.new uploader.model.read_attribute(:picture)
+        Content.new uploader.model.read_attribute(self.uploader.mounted_as)
       end
     end
 

diff --git a/carrierwave-blob.gemspec b/carrierwave-blob.gemspec
@@ -1 +1,18 @@
-TEST
+# -*- encoding: utf-8 -*-
+
+Gem::Specification.new do |s|
+  s.name        = "carrierwave-blob"
+  s.version     = "0.0.1"
+  s.platform    = Gem::Platform::RUBY
+  s.summary       = "BLOB support for Carrierwave"
+  s.authors       = [ 'Karel Minarik', 'Vojtech Hyza' ]
+  s.email         = [ '[email protected]', '[email protected]' ]
+
+  s.files         = `git ls-files`.split("\n")
+  s.test_files    = `git ls-files -- {test,spec,features}/*`.split("\n")
+  s.executables   = `git ls-files -- bin/*`.split("\n").map{ |f| File.basename(f) }
+
+  s.require_paths = ["."]
+
+  s.add_dependency "carrierwave"
+end
diff --git a/carrierwave-blob.rb b/carrierwave-blob.rb
@@ -0,0 +1,34 @@
+# encoding: utf-8
+
+module CarrierWave
+  module Storage
+
+    class Blob < Abstract
+      class Content
+        def initialize(content)
+          @content = content
+        end
+
+        def url(options={})
+          @content    
+        end
+
+        def to_s
+          @content
+        end
+      end
+
+      def store!(file)
+        # require "pry"; binding.pry
+        type = uploader.file.content_type
+        blob = Base64.encode64(self.uploader.file.read)
+        uploader.model.update_columns picture: "data:#{type};base64,#{blob}"
+      end
+
+      def retrieve!(identifier=nil)
+        Content.new uploader.model.read_attribute(:picture)
+      end
+    end
+
+  end
+end
diff --git a/carrierwave-blob.gemspec b/carrierwave-blob.gemspec
@@ -0,0 +1 @@
+TEST