I'm trying to use the jquery file upload plugin in my rails app to upload images, documents, and pdfs. I changed the accepted file types to accept pdfs etc. However, when I click 'Start upload', I get the following error (only with .pdf, .docx, and .doc):
Error emptly file upload result
If I try to upload a .txt, .png, .jpg, or .gif, it works fine. I tried increasing the max file size and also creating a .pdf file with 1 word and still got the same error. I've been searching online, I've mostly seen people suggest using the gd-extension for php, but I have a rails application so is there a rails alternative for gd-extension?
Thanks
Fixed! For anyone with the same issue this is what I did:
This fix is for Paperclip fyi.
So in the model where you have 'has_attached_file', you need to pass an additional attribute here: :whiny => false, so it should look something like:
has_attached_file :asset,
:styles => { :thumb => "100x100>" },
:whiny => false,
:storage => :s3,
:s3_credentials => "config/s3.yml",
:path => ":id/:style/:filename"
":whiny" is set to true by default, and it essentially raises an error if Paperclip cannot process a thumbnail of the uploaded file, and since pdf, doc, etc.. doesn't have a thumbnail the emptyResult error was being raised.
Sources:
Paperclip::NotIdentifiedByImageMagickError when file is not a valid attachment content type
https://github.com/thoughtbot/paperclip/blob/master/lib/paperclip.rb
Related
I have a audit table and audit_report field.Field type is text .I saved pdf files into folder and saved name to database.I tried to display the pdf on view page. but the box with image sign only getting. I could display jpeg and png files nicely.How to display PDF on view page of yii2 framework.
This would work,
return Yii::$app->response->sendFile($completePath, $filename, ['inline'=>true]);
Input the function with third param as array of value 'inline'=>true to open the file within the browser window.
See the documentation here sendFile()
You could add a button that opens the file in a new tab, but make it link to an action in your controller that returns the file instead of the direct path to the file:
In your view:
<?= Html::a('PDF', [
'controller/pdf',
'id' => $model->id,
], [
'class' => 'btn btn-primary',
'target' => '_blank',
]); ?>
In your controller:
public function actionPdf($id) {
$model = ModelClass::findOne($id);
// This will need to be the path relative to the root of your app.
$filePath = '/your/file/path';
// Might need to change '#app' for another alias
$completePath = Yii::getAlias('#app'.$filePath.'/'.$model->fileName);
return Yii::$app->response->sendFile($completePath, $model->fileName);
}
Aliases - Key Concepts - The Definitive Guide to Yii 2.0
Although the question has been answered there is one thing that needs to be addressed if you have the file content/stream instead of the file path, like for instance you are using Dropbox API and you receive a stream from the API and want to display that file instead of forcing the browser to download.
For this case you can use the sendContentAsFile when attempting to display the PDF file in the browser you will need to specify the mimeType option too along with the "inline"=>true because the default mimeType value is set to application/octet-stream which is used to download a file and to display inline in browser you need to change it to application/pdf.
return Yii::$app->response->sendContentAsFile(
$fileContent,
$filename,
['inline' => true, 'mimeType' => 'application/pdf']
);
I have an uploader (internal use only) that will upload an HTML document to a binary column of a table in my client-facing website. The client facing site has an index that allows the user to view the page as a normal website (using send_data h_t.html_code, :type => "html", :disposition => "inline"). I also want to give the user the ability to download a PDF of the page. For that I'm using wicked_pdf.
The entire problem seems to stem from the fact that the data is stored in the database. As strange as it sounds, it is vital to business operations that I get formatting exact. The issue is I can't see any image, and the stylesheets/style tags don't have any effect.
What I've tried-
Gsub-
def show
html = HtmlTranscript.find(params[:id])
html_code = html.html_code.gsub('<img src="/images/bwTranscriptLogo.gif" alt="Logo">','<%= wicked_pdf_image_tag "bwTranscriptLogo.gif" %>')
html_code = html_code.gsub('<link rel="StyleSheet" href="" type="text/css">','<%= wicked_pdf_stylesheet_link_tag "transcripts.css" %>')
transcript = WickedPdf.new.pdf_from_string(html_code)
respond_to do |format|
format.html do
send_data transcript, :type => "pdf", :disposition => "attachment"
end
##### i never could get this part figured out, so if you have a fix for this...
# format.pdf do
# render :pdf => "transcript_for_#{#html.created_at}", :template => "html_transcripts/show.html.erb", :layout => false
# end
end
end
Using a template-
#Controller (above, modified)
html = HtmlTranscript.find(params[:id])
#html_code = html.html_code.gsub('<img src="/images/bwTranscriptLogo.gif" alt="Logo">','<%= wicked_pdf_image_tag "bwTranscriptLogo.gif" %>')
#html_code = #html_code.gsub('<link rel="StyleSheet" href="" type="text/css">','<%= wicked_pdf_stylesheet_link_tag "transcripts.css" %>')
transcript = WickedPdf.new.pdf_from_string(render_to_string(:template => "html_transcripts/show.html.erb", :layout => false))
#view
<!-- tried with stylesheet & image link tags, with wicked_pdf stylesheet & image link tags, with html style & img tags, etc -->
<%= raw(#html_code) %>
And both will generate a transcript- but neither will have style OR image.
Creating an initializer-
module WickedPdfHelper
def wicked_pdf_stylesheet_link_tag(*sources)
sources.collect { |source|
"<style type='text/css'>#{Rails.application.assets.find_asset("#{source}.css")}</style>"
}.join("\n").gsub(/url\(['"](.+)['"]\)(.+)/,%[url("#{wicked_pdf_image_location("\\1")}")\\2]).html_safe
end
def wicked_pdf_image_tag(img, options={})
image_tag wicked_pdf_image_location(img), options
end
def wicked_pdf_image_location(img)
"file://#{Rails.root.join('app', 'assets', 'images', img)}"
end
def wicked_pdf_javascript_src_tag(source)
"<script type='text/javascript'>#{Rails.application.assets.find_asset("#{source}.js").body}</script>"
end
def wicked_pdf_javascript_include_tag(*sources)
sources.collect{ |source| wicked_pdf_javascript_src_tag(source) }.join("\n").html_safe
end
end
did absolutely nothing, and I have no idea what to try next.
As a side note, the code to view the HTML version of the transcript is as follows:
def transcript_data
h_t = HtmlTranscript.find(params[:id])
send_data h_t.html_code, :type => "html", :disposition => "inline"
end
It requires no view, as the html data is stored in the database, but I get image, style, etc. Everything works with the HTML version- just not the PDF.
I'm on ruby 1.8.7 with rails 3.0.20.
Solved-
As it turns out, there was more than one issue at hand.
1- Installation of wkhtmltopdf for Ubuntu via $apt-get install does not quite do the trick for what I wanted...
see http://rubykitchen.in/blog/2013/03/17/pdf-generation-with-rails
(there may have also been an issue with having not previously run sudo apt-get install openssl build-essential xorg libssl-dev libxrender-dev, as when I did, it installed a number of components I did not previously have.)
2- The HTML files I had uploaded contained image & style code that was breaking the formatting. I fixed it with this...
def rm_by_line(which = 0, line1 = 0, line2 = 0)
h_t = HtmlTranscript.find(which)
line_by_line = h_t.html_code.split('
')
for i in line1..line2
line_by_line[i] = ''
end
line_by_line = line_by_line.join('
').strip
return line_by_line
end
Then, all I had to do was pass which lines I wanted to remove.
(I had to split the parens with a carriage return because '\n' didn't function properly when calling 'raw' on the returned string.)
3- wicked_pdf_stylesheet_link_tag and wicked_pdf_image_tag were undefined. I had to inline the style formatting I wanted into a layout I created (turns out wicked_pdf_stylesheet_link_tag used asset pipeline wich my ruby/rails did not implement, which also means I had to get rid of the javascript helpers) and created a helper for wicked_pdf_image_tag, making a switch in the layout for which image tag (image_tag or wicked_pdf_image_tag) to be used.
4- I needed both a .html.erb & a .pdf.erb for my templates, so I made both.
5- Got rid of WickedPdf.new.pdf_from_string in favor of linking to either html or pdf by using :format => 'html' or :format => 'pdf' in the link_to tag.
I have this in my Rails controller:
def download_clip
send_file "public/output.mp4", :type=>"video/mp4", :filename => "output.mp4", :disposition => 'attachment'
end
and in my HTML code I have this:
Now could somebody tell me why Firefox's download window will NOT pou up, but chrome downloads the file fine? Instead firefox opens a new window and starts playing the file. I WANT THE DOWNLOAD BOX to POPUP. I have spend too much time on it
You are using a relative url, which may not map correctly depending on the page it is used.
Try changing your link to:
<%= link_to "some text", :controller => :your_controller_name, :action => :download_clip %>
If this doesn't help, check if the Content-Diposition response header is being set as 'attachment'. If it is, then the problem is likely with your own Firefox environment and not with the server. Resetting Firefox to defaults should fix that...
Add
headers['Content-Disposition'] = "attachment;"
in your download_clip action..
What sort of things OUTSIDE of the Rails codebase can affect asset precompilation?
My colleague is experiencing asset precompilation issues, while it works fine for me. We're running the same code. We have Gemfile and Gemfile.lock in version control, so those are identical, and application.rb is the same for both of us (so, for example, config.assets.enabled = true is set for both of us.)
Here are the two relevant files. The issue we're experiencing is below.
app/views/layouts/application.html.erb:
...
<%= stylesheet_link_tag "application", :media => "all" %>
...
app/assets/stylesheets/application.css:
/*
* This is a manifest file that'll automatically include all the stylesheets available in this directory
* and any sub-directories. You're free to add application-wide styles to this file and they'll appear at
* the top of the compiled file, but it's generally better to create a new file per style scope.
*= require_self
*= require booking_availability_table
*= require bootstrap_and_overrides
*= require browse_coaches
*= require landing_pages
*= require layout
*= require lightbox
*/
note: Some of these files are .css, some are .css.less, and some are .css.scss.
The issue:
When loading the homepage, he gets the error
TypeError in Static_pages#home
can't convert nil into String
(in /path/to/app/assets/stylesheets/layout.css.scss)
Extracted source (around line #20)
20: <%= stylesheet_link_tag "application", :media => "all" %>
From experimental deleting, we see that it's only the .css.scss files that are causing the problem. Deleting the lines in application.css corresponding to SASS files stops the error from occurring and lets the page load. However, if we do so:
The home page then has tons of links to /stylesheets/___.css, which result in 404's, instead of the correct /assets/____.css as it does for me.
What we tried:
I tried stepping through loading the homepage on both our machines with debugger. Our code execution diverged here:
.rvm/gems/ruby-1.9.2-p290/gems/actionpack-3.2.1/lib/sprockets/helpers/rails_helper.rb:
def stylesheet_link_tag(*sources)
...
sources.collect do |source|
if debug && asset = asset_paths.asset_for(source, 'css')
asset.to_a.map { |dep|
super(dep.pathname.to_s, { :href => path_to_asset(dep, :ext => 'css', :body => true, :protocol => :request, :digest => digest) }.merge!(options))
}
else
super(source.to_s, { :href => path_to_asset(source, :ext => 'css', :body => body, :protocol => :request, :digest => digest) }.merge!(options))
end
end.join("\n").html_safe
Specifically, the statement asset_paths.asset_for(source, 'css') raises an error for my colleague, but not for me.
We also tried uninstalling and reinstalling rails and rvm.
Oh, feels stupid... we fixed it. rm -rf'ing the entire directory and re-cloning it fixed it. I guess there was an extra file in there floating around or something.
To implement Gravatar in my Rails3 application, I'm using the gravatar_image_tag gem in a helper, but I'm having issues when mixing 2 config options:
If the user doesn't have a gravatar attached to his email a default image is rendered; but I want it to reference an external file (e.g., http://www.iconfinder.com/ajax/download/png/?id=43350&s=128 instead of :identicon or others)
I also want the image to be resized on the fly to, let's say 50px.
Independently, both options work as expected, but when I put them together:
def gravatar_for(user, options = { :default => 'http://www.iconfinder.com/ajax/download/png/?id=43350&s=128', :size => 50 })
gravatar_image_tag(user.email.downcase, :alt => user.full_name,
:class => 'gravatar',
:gravatar => options)
end
the size option is not applied, and the gravatar gets rendered in it's full size (128px in this case).
What am I doing wrong, or how can I achieve this combination?
Gravatar will not resize your default image for you. I assume that it just 302s to the ulr gave as a default if it does not find an gravatar for the email you gave it. It looks like the 's' parameter in the iconfinder url is for the size you are trying to grab but that icon does not have a size of 50px available only 128, 256, and 512
Example:
http://www.iconfinder.com/ajax/download/png/?id=43350&s=256
If you wanted a 50px and 80px versions of the icon I would save it to your applications public/image directory as default_gravatar_50.png and default_gravatar_80.png respectively and change your method like so.
end
def gravatar_for(user, options = {})
options = { :size => 50 }.merge(options)
options[:default] = image_tag("default_gravatar_#{options[:size]}.png
gravatar_image_tag(user.email.downcase,
:alt => user.full_name,
:class => 'gravatar',
:gravatar => options)
end
Or if you find an icon on icon finder that is the size(s) you like change the setting of the default option like so.
options[:default] = "http://www.iconfinder.com/ajax/download/png/?id=43350&s=#{options[:size]}"
Iconfinder here. You don't want to link to the download script. Instead just grab the URL to the image it self so you wan't get a lot of header information.