ruby Uploading a file in Rails File Uploading Using Rails Uploading files and pictures into your Rails application Ruby on Rails image uploads with CarrierWave in Windows 7 window 8 8.1 or later window 9 commands in dos
Following steps are required to see pictures
Step 1: c:\>gem install carrierwave
Step 2: c:\>gem install mini_magick
or
Step 3: Add following link GemFile in your application
gem 'carrierwave'
gem 'mini_magick'
Step 4: c:\>rails g uploader FilesUploader
Then you will see following code uncomments according to your requirement :
class FilesUploader < CarrierWave::Uploader::Base
# Include RMagick or MiniMagick support:
#include CarrierWave::RMagick
include CarrierWave::MiniMagick
# Choose what kind of storage to use for this uploader:
storage :file
# storage :fog
# Override the directory where uploaded files will be stored.
# This is a sensible default for uploaders that are meant to be mounted:
def store_dir
"uploads/#{model.class.to_s.underscore}/#{mounted_as}/#{model.id}"
end
# Provide a default URL as a default if there hasn't been a file uploaded:
# def default_url
# # For Rails 3.1+ asset pipeline compatibility:
# # ActionController::Base.helpers.asset_path("fallback/" + [version_name, "default.png"].compact.join('_'))
#
# "/images/fallback/" + [version_name, "default.png"].compact.join('_')
# end
# Process files as they are uploaded:
# process :scale => [200, 300]
#
# def scale(width, height)
# # do something
# end
# Create different versions of your uploaded files:
version :thumb do
process :scale => [50, 50]
end
# Add a white list of extensions which are allowed to be uploaded.
# For images you might use something like this:
def extension_white_list
%w(jpg jpeg gif png)
end
# Override the filename of the uploaded files:
# Avoid using model.id or version_name here, see uploader/store.rb for details.
# def filename
# "something.jpg" if original_filename
# end
end
Step 5: add line in Model
class User < ActiveRecord::Base
mount_uploader :image, PictureUploaderUploader
end
Step 6: Change following code in your views
image to image_url
<%= @user.image %>
to
If you want to url
<%= @user.image_url %>
If you want to show Image
<%= image_tag(@user.image_url) %>
Step 7: Change the following code also
<%= f.text_field :image %>
to
<%= f.file_field :image %>
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