My site allows users to upload csv files for processing. It all works
fine, but on the response I'd like to report something like "Your file
abc.csv processed OK".
Unfortunately I cannot seem to find the actual original file name in
the params, even though Firebug tells me it's part of the post.
Any tips?
Thanks....
Try using debug on the results of your form.
http://guides.rubyonrails.org/debugging_rails_applications.html#debug
As Jarrod mentions in the comments above. Use params[:file].original_filename
Funny thing is, my form has two file upload tags (file1 and file2). One comes in as a ActionController::UploadedTempfile and the other ActionController::UploadedStringIO.
This may be a rails bug but it doesn't matter to me as both have the original_filename method.
Related
I'm playing around with the Twitter api, and have gotten back super long JSON response. I saved the response as a string in a seperate file, and I want to have Chrome display that string as JSON, so I can collapse/ expand the nested parts in JSON view.
I feel like there should be an easier way to do this rather than temporarily changing my api controller in Rails...any suggestions? This is for a Rails 4 app using Backbone.js in the front end.
Ah, stupid mistake on my part -- I was using one of the referred to chrome extensions, JSONView, and asked this question after being surprised that it wasn't working.
The reason it wasn't working was because contents of the file were not actually in JSON format, they were in a ruby hash.
I was able to fix it by replacing this:
File.open('exampleResponse', 'w') do |file|
file.write(Twitter::SearchResults.new(request).attrs)
end
with this:
File.open('exampleResponse', 'w') do |file|
file.write(Twitter::SearchResults.new(request).attrs.to_json)
end
There are many chrome extensions to view formatted json. I use JsonView and it works fine, but I imagine there are dozens if not hundreds to choose from.
I'm following a tutorial: http://tutorials.jumpstartlab.com/projects/merchant.html, where we call product images like this:
<%= image_tag "products/#{product.image_url}" %>
That should work, but I get this 404 error, and this shows up in the console:
GET http://localhost:3000/images/products/%20purple_grapes.jpg
What is that %20 in there. When I hard code the image name, it works. Rails is looking in the right place for the image, which is /assets/images/products/ but the file name should be purple_grapes.jpg, not %20purple_grapes.jpg
This problem is driving me batty. I've done this kind of code before calling images and not had this problem. Any idea why this isn't working? I read through The Assets Pipline and according to it this code is correct.
Thank you!
You probably just entered a space before your file name in the text field.
To avoid this, you can add a validator to your field or force strip on it to avoid leading/ending whitespace.
I am trying to download an image and displaying it in a view in rails.
The reason why I want to download it is because the url contains some api-keys which I am not very fond of giving away.
The solution I have tried thus far is the following:
#Model.rb file
def getUrlMethod
someUrlToAPNGfile = "whatever.png"
file = Tempfile.new(['imageprependname', '.png'], :encoding => "ascii-8bit")
file.write(open(data).read)
return "#{Rails.application.config.action_mailer.default_url_options[:host]}#{file.path}"
end
#This seems to be downloading the image just fine. However the url that is returned does not point to a legal place
Under development I get this URL for the picture: localhost:3000/var/folders/18/94qgts592sq_yq45fnthpzxh0000gn/T/imageprependname20130827-97433-10esqxh.png
That image link does not point anywhere useful.
My theories to what might be wrong is:
The tempfile is deleted before the user can request it
The url points to the wrong place
The url is not a legal route in the routes file
A am currently not aware of any way to fix either of these. Any help?
By the way: I do not need to store the picture after I have displayed it, as it will be changing constantly from the source.
I can think of two options:
First, embed the image directly in the HTML documents, see
http://www.techerator.com/2011/12/how-to-embed-images-directly-into-your-html/
http://webcodertools.com/imagetobase64converter
Second, in the HTML documents, write the image tag as usual:
<img src="/remote_images/show/whatever.png" alt="whatever" />
Then you create a RemoteImages controller to process the requests for images. In the action show, the images will be downloaded and returned with send_data.
You don't have to manage temporary files with both of these options.
You can save the file anywhere in the public folder of the rails application. The right path would be something like this #{Rails.root}/public/myimages/<image_name>.png and then you can refer to it with a URL like this http://localhost:3000/myimages/<image_name>.png. Hope this will help.
My program is dealing with emails which arrive as files (something.eml). In some circumstances I need to amend an attachment and then resave the file. I've been using the instructions here as a basis for my code, but there's no suggestion for trying to do exactly what I'd like. The code I have below successfully removes the original attachment and then tries to add in a new one.
#email.without_attachments!
#email.add_file(amended_version)
Unfortunately it goes wrong in two places. Firstly it seems to remove all mime parts, not just attachments. Any text/plain sections are also ditched. Secondly, if I test by reloading my amended .eml file, the attachment is no longer recognised, despite being in the file.
I've included a gist which includes the original and amended files from my current method.
Is there a better way to do this? Perhaps a way of replacing the attachment directly rather than get rid of it and adding again?
I don't know enough about mail formatting to know why this works, but it does.
I extracted just the line I was interested in from the without_attachments! method and it now seems to work fine. The non-attachment parts of the message are kept intact and the message re-reads fine. Code now reads....
#email.parts.delete_if { |p| p.attachment? }
#email.add_file(amended_version)
I think this is an easy question. I am using this useful Flash Document Reader called FlexPaper. I have it embedded in one of my Show pages. But when I click the a link on their tool bar to show the document in a new browser, it points to the following link:
http://example.com/intels/FlexPaperViewer.swf?ZoomTime=0.5&FitPageOnLoad=false&PrintEnabled=false&SwfFile=%2FPaper.swf
which doesn't work, I get the following error:
ActiveRecord::RecordNotFound in IntelsController#show
Couldn't find Intel with ID=FlexPaperViewer
but if I remove the "intels" from the path so the url looks like:
http://example.com/FlexPaperViewer.swf?ZoomTime=0.5&FitPageOnLoad=false&PrintEnabled=false&SwfFile=%2FPaper.swf
It works fine.
My question is what is the best way to handle this? Can you write a route that rewrites a url that starts with intels/FlexPaperViewer.swf and remove the intels prefix? What would that look like?
Is there a better option?
Juat a thought, how about placing the FlexPaperViewer.swf inside public/intels folder?
So the directory structure will be
<project-directory>/public/intels/FlexPaperViewer.swf
Doing this will make the link correct. It seems to be easier to do it this way.
Hopefully it helps.
EDIT
Another alternative will be to see how the link was generated, maybe there is a parameter that you can set when you embed the FlexPaper.
I am not aware of any route modification that can do what you want. Maybe someone else can help on this.