I have a rails site where I allow a user to upload an mp3 file to
create a podcast. Once uploaded (using paperclip) I use mp3info to
read the metadata and then populate the model information if it has
been specified. I decided to redo this in hobo.
I think I am having trouble with the order of callbacks or something.
The model code I have is pasted below. It is currently strewn with
various "attempts" of me trying to debug, etc. with puts, so please
don't laugh too much. I also copied/pasted it so it's entirely
possible I have a typo, but I don't think so. My problem is that the
after_audio_post_process callback gets called, but for some reason it
doesn't appear to be "saving" the information to the db. Is this
called after the model is saved? If so, do I need to call something in
assign_episode_info to save my model after I have updated the title,
description, etc.? I tried to put a self.save in at the bottom and
that didn't work (I got an error on that), so I'm assuming I have to
do something else.
I got it to save once last night, but have no idea what I changed to
get it that way since my vision was blurring from exhaustion. Am I
calling something in the wrong order, etc? Also, if there is somewhere
that I can look to find out what order these things are called in I'm
willing to read a bit on my own.
Thanks for any help. I'm on RC2 if it's important.
Joey
class Episode < ActiveRecord::Base
hobo_model # Don't put anything above this
require 'rubygems'
require 'mp3info'
fields do
title :string, :name => true
artist :string
description :text
tagstring :string
timestamps
end
has_many :episode_categories, :through
=> :episode_cat_joins, :accessible => true
has_many :episode_cat_joins, :dependent => :destroy
has_many :tags, :through => :tag_joins, :accessible => true
has_many :tag_joins, :dependent => :destroy
children :episode_categories
has_attached_file :audio,
:url => "/system/
audio/:class/:attachment/:id_:normalized_audio_file_name",
:path => ":rails_root/public/system/
audio/:class/:attachment/:id_:normalized_audio_file_name"
validates_attachment_presence :audio,
:message => "must be specified before continuing."
validates_attachment_content_type :audio, :content_type =>
[ 'application/mp3', 'application/x-mp3', 'audio/mpeg', 'audio/
mp3','audio/x-m4a','audio/x-mp3' ],
:message => "is the only valid file type for an episode
attachment."
validates_attachment_size :audio, :less_than => 15.megabytes,
:message => "file must be less than 15 Megabytes."
Paperclip.interpolates :normalized_audio_file_name do |attachment,
style|
attachment.instance.normalized_audio_file_name
end
def normalized_audio_file_name
"#{self.id}-#{self.audio_file_name.gsub( /[^a-zA-Z0-9_\.]/,
'_')}"
end
after_audio_post_process :assign_episode_info
def assign_episode_info
#self.size = self.mp3_file_size
Mp3Info.open(audio.to_file.path) do |audio_info|
self.title = if (audio_info.tag.title.nil? ||
audio_info.tag.title.blank?)
"Untitled Episode"
else
audio_info.tag.title
end
puts "************" + self.title
self.artist = if (!audio_info.tag.artist.nil? && !
audio_info.tag.artist.blank?)
audio_info.tag.artist
end
puts "************" + self.artist
self.description = if (!audio_info.tag.comments.nil? && !
audio_info.tag.comments.blank?)
audio_info.tag.comments.gsub!("?","")
puts "*********** Nothing was nil or blank
for description"
else
"Sermons from the Willette church of
Christ"
puts "************something was blank"
end
#puts "************" + self.description
end
end
# --- Permissions --- #
def create_permitted?
acting_user.administrator?
end
def update_permitted?
acting_user.administrator?
end
def destroy_permitted?
acting_user.administrator?
end
def view_permitted?(field)
true
end
end
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