I am using paperclip for uploading images in my rails application.
I have 2 models 'Image' and 'Book' where one book can have many Images and image belongs_to Book.
In my 'images' table, I have 4 columns:
id
book_id
data_file_path
data_file_name
column 'data_file_path' stores the path of the image and column 'data_file_name' stores the image name and extension
In my image.rb file, I have the following lines of code:
has_attached_file :data, :path => "http://www.test.org/book/book_images/:data_file_path/:book_id/:style/:basename.:extension",
:url => "http://www.test.org/book/book_images/:data_file_path/:book_id/:style/:basename.:extension"
Notice the ':data_file_path' in the code above.
In my view, when i do <%=image.data.url(:thumb)%> i get the following path:
http://www.test.org/book/book_images/data_file_path/9124/thumb/1897_EK91_201107.jpg
Instead of retrieving the data_file_path value from the d-base, it's displaying the variable name.
How to I get the data_file_path value in the url.
Thanks a lot for your precious help. I have struggling with that since a while now.
Ah, I finally figured it out. I needed to use Paperclip.interpolates.
I added the following in config/initializers/paperclip.rb file
Paperclip.interpolates :data_file_path do |attachment, style|
attachment.instance.data_file_path
end
Then just add 'data_file_path' to the path in image.rb:
has_attached_file :data, :path => "http://www.test.org/book/book_images/:data_file_path/:book_id/:style/:basename.:extension",
:url => "http://www.test.org/book/book_images/:data_file_path/:book_id/:style/:basename.:extension"
Hope this might be of help to somebody else :)
cheers
Related
Please i am facing this problem with my configuration on uploading images to my cloud storage(Cloudinary).
when i upload a single image in my rails app, it makes a duplicated of times 3 in my cloud storage.
I am Using ruby 2.3 & Rails 5.1 with paperclip-cloudinary ~> 1.3', '>= 1.3.2
I am pretty sure is the path that i set.
i dont know how to set the right path.
:path => ':class/:id/:style/:filename'
My Post Model
class Post < ApplicationRecord
acts_as_votable
belongs_to :user
has_many :comments
has_attached_file :image,
:storage => :cloudinary,
:path => ':class/:id/:style/:filename',
styles: { medium: "700x500#", small: "350x250>" }
validates_attachment_content_type :image, content_type: /\Aimage\/.*\z/
end
the problem was the :style in the path
:path => ':class/:id/:style/:filename'
to prevent making duplicate of the styles defined, remove the style option from the path
for it to be like this =>
:path => ':class/:id/:filename'
It's not a duplicate image. It's a three images of different dimensions that you are mentioning in styles.
1st one is your original image that you are actually uploading.
Second and third will be of medium: "700x500#", small: "350x250 respectively.
You can call other two's are thumbnails of the original image.
I have a model of ThreesixtyViewer which also has a nested resource of the ThreesixtyViewerImage model. An image attribute is being saved via the paperclip gem - but I am having issues updating the file path how it's needed.
The images for each ThreesixtyViewer needs to be saved together within one directory that is associated with the specific viewer. For example:
/public/system/threesixty_viewer_images/12/large/filename.jpg
In this example, the 12 in the path would be the id of the specific threesixtyviewer - but I cannot find any examples with that functionality. If the ThreesixtyViewer had an ID of 57, then the path would look like so:
/public/system/threesixty_viewer_images/57/large/filename.jpg
threesixty_viewer.rb
belongs_to :article
has_many :threesixty_viewer_images, dependent: :delete_all
accepts_nested_attributes_for :threesixty_viewer_images, allow_destroy: true
threesixty_viewer_image.rb
belongs_to :threesixty_viewer
has_attached_file :image, styles: { small: "500x500#", large: "1440x800>" },
path: ':rails_root/public/system/:class/:VIEWER_ID/:size/:filename',
url: '/system/:class/:VIEWER_ID/:size/:filename'
validates_attachment_content_type :image, content_type: /\Aimage\/.*\Z/
I know the :path and :url attributes need to beupdated for the has_attached_file within the threesixty_viewer_image.rb - but I am unsure as to how I can get the id for the threesixty_viewer... for now I added a :VIEWER_ID in it's place.
Any help would be greatly appreciated! Thanks in advance for anyone who can lend an eye!
You can add any of the models attributes to that path for this object. I believe you can even go so far as adding anything that the method will respond to, so you can even create path helpers for returning specific strings (such as month it was saved, year, etc).
In your case, ThreesixtyViewerImage is a child model, your table should include a column for the parent model. In your case, that attribute is probably :threesixty_viewer_id
Here is what I think you need for setting that path on threesixty_viewer_image.rb:
has_attached_file :image,
styles: { small: "500x500#", large: "1440x800>" },
path: ":rails_root/public/system/:class/:threesixty_viwer_id/:size/:filename",
url: "/system/:class/:threesixty_viewer_id/:size/:filename"
validates_attachment_content_type :image, content_type: /\Aimage\/.*\Z/
EDIT
Everything I said above is dead wrong. My apologies! What you need to use is a Paperclip::Interpolation. Here's a link
Here's what I did to make use:
Create a new file: config/initializers/paperclip_interpolators
Place something like this in that file:
Paperclip.interpolates :threesixty_viewer_id do |attachment, style|
attachment.instance.threesixty_viewer_id
end
Restart your application
Regenerate your paths/folders for the attachments. Here's a Link
Anytime you want another attribute in your path, just add another interpolator! Sorry again for misleading you before.
#colin_hagan is on the right path - I would suggest you look into Paperclip Interpolations:
#app/models/threesixty_viewer_image.rb
class ThreesixtyViewerImage < ActiveRecord::Base
belongs_to :threesixty_viewer
has_attached_file :image,
path: ":rails_root/public/system/:class/:threesixty_viewer_id/:size/:filename",
url: "/system/:class/:threesixty_viewer_id/:size/:filename"
Paperclip.interpolates :threesixty_viewer_id do |attachment, style|
attachment.instance.threesixty_viewer_id
end
end
Notice the double quotes, rather than single.
Double quotes should be used for interpolation - single quotes are for literal strings (I think).
Another thing I found some time back is the paperclip_defaults option -- allowing you to specify styles etc for any attachments:
#config/application.rb
...
config.paperclip_defaults = {
styles: { small: "500x500#", large: "1440x800>" }
}
These can be overridden in your respective models - it's just handy for me, as it means you don't have to explicitly define styles each time you have an attachment.
I have a user model that is generated using Devise. I am extending this model using paperclip to enable file upload and also the processing of a file using a custom paperclip processor.
My paperclip field is declared in the user model as follows. PaperClipStorage is a hash that I create with the paperclip variables. Also, the being stored on AWS S3.
has_attached_file :rb_resume, PaperclipStorageHash.merge(:style => { :contents => 'resume_contents'}, :processors => [:resume_builder])
validates_attachment_content_type :rb_resume, :if => lambda { |x| x.rb_resume? }, :content_type => ['application/pdf', 'application/x-pdf', 'application/msword', 'application/x-doc']
The validates_attachment_content_type check is being done to make sure that it only processes pdf and MS word files.
My processor looks as follows
module Paperclip
class ResumeBuilder < Processor
def initialize(file,options = {}, attachment = nil)
#file = file
#attachment = attachment
puts "Attachment is not null " if !attachment.nil?
end
def make
rb = MyModule::MyClass.new(#file.path) ### Do something with the file
section_layout = rb.parse_html
#attachment.instance_write(:whiny, section_layout)
#file
end
end
end
In my user model I also have an after_save callback that is supposed to take the section_layout generated in the processors make method. Code is as follows
after_save :save_sections
def save_sections
section_layout = rb_resume.instance_read(:whiny)
# Do something with section_layout...
end
Now my problem is that the processor code is never being called, and I can't figure out why.
Because of that the section_layout variable is always nil.
Another point to note is that the same model also has two other has_attached_file attributes. None of the other two use a custom processor.
I've been struggling with this for last 3 hours. Any help would be greatly appreciate.
Thanks
Paul
Error in my has_attached_file declaration
has_attached_file :rb_resume, PaperclipStorageHash.merge(:style => { :contents => 'resume_contents'}, :processors => [:resume_builder])
should actually be
has_attached_file :rb_resume, PaperclipStorageHash.merge(:styles => { :contents => 'resume_contents'}, :processors => [:resume_builder])
Notice the plural styles as opposed to singular style
I have two model
User and UserAgent
User has one UserAgent & UserAgent belongs to User
And UserAgent using Paperclip to upload file to server
Using this
has_attached_file :agreement,
:path => "#{Rails.root}/public/upload/new_agreements/:id/:basename.:extension"
This working fine.It is creating folders needed to upload the file.
But i need to create the folder like this
:path => "#{Rails.root}/public/upload/new_agreements/User:id/:basename.:extension"
That means I need to upload the file according to the User.id but not UserAgent.Id
Is there any way? You can ask questions if u don't understand the question.
Try that. I haven't test it, but you can modify it:
class UserAgent < ActiveRecord::Base
has_attached_file :file,
:path => lambda{ |a| "#{Rails.root}/public/upload/new_agreements/#{a.instance.user.id}/:id/:basename.:extension" }
end
in Rails using the Polymorphic version of Paperclip, the default saving technique means that files with the same name overwrite each other. Including the :id in the path and URL doesn't work as it just overwrites the earlier file with the old :id.
I've tried interpolations using a time-stamp, but it just looks for the current time when being shown the image (plus as I have multiple thumbnails it takes longer than a second, therefore the images have different stamps).
Paperclip.interpolates :uniqueid do |attachment, style|
Time.now.to_i.to_s
end
Also tried using a hex number, but it iterates through for each thumb, thus breaking as there's a new hex value each time.
Paperclip.interpolates :uniqueid do |attachment, style|
ActiveSupport::SecureRandom.hex(3)
end
As it's the Polymorphic version, and thus has it's own model, I don't know how to access the values from the parent model (in this case "Post").
Variations on the code below all throw up "undefined method" errors.
Paperclip.interpolates :user_id do |attachment, style|
current_user.id
end
Sorry if it seems a newbie question, but it's well document for the traditional Paperclip, but nothing is out there for the Polymorphic fork.
How about including :class in the :path for has_attached_file ?
has_attached_file :attachment,
:path => ":rails_root/attachments/:class/:id/:attachment/:basename.:extension",
:url => "downloads/:id/:title.:extension"