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  • Rails 3 get raw post data and write it to tmp file

    - by Andrew
    I'm working on implementing Ajax-Upload for uploading photos in my Rails 3 app. The documentation says: For IE6-8, Opera, older versions of other browsers you get the file as you normally do with regular form-base uploads. For browsers which upload file with progress bar, you will need to get the raw post data and write it to the file. So, how can I receive the raw post data in my controller and write it to a tmp file so my controller can then process it? (In my case the controller is doing some image manipulation and saving to S3.) Some additional info: As I'm configured right now the post is passing these parameters: Parameters: {"authenticity_token"=>"...", "qqfile"=>"IMG_0064.jpg"} ... and the CREATE action looks like this: def create @attachment = Attachment.new @attachment.user = current_user @attachment.file = params[:qqfile] if @attachment.save! respond_to do |format| format.js { render :text => '{"success":true}' } end end end ... but I get this error: ActiveRecord::RecordInvalid (Validation failed: File file name must be set.): app/controllers/attachments_controller.rb:7:in `create'

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  • Multiple filters on a data

    - by sridhary
    I want have have multiple filters on the data. like first i want to filter by date field and then by type field and then by some other field .... as many times as possible. i must pass on the field and value in the url and it must apply the filter and pass the data to the next filter.

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  • How to import data in SQL Compact Edition?

    - by Peter
    I don't seem to find a tool for it, nor an odbc driver. Thanks UPDATE : I'm aware of the sql scripting possibilities. But than again : how to script a sql 2k table? (not just ddl, but data also?) Of course you can write this all by yourself, but importing data into CE cannot be such a hassle, or can it ? UPDATE2 : I don't seem to be able to choose the right dialect for inserting

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  • Alternatives to fread and fwrite for use with structured data

    - by forest58
    The book Beginning Linux Programming (3rd ed) says "Note that fread and fwrite are not recommended for use with structured data. Part of the problem is that files written with fwrite are potentially nonportable between different machines." What does that mean exactly? What calls should I use if I want to write a portable structured data reader or writer? Direct system calls?

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  • PostgreSQL data comparsion tool

    - by user179056
    Hello, I am looking for a tool/command which can compare data between two PostgreSQL databases. The reason to do this is to have some external verification that the SQL script responsible for data migration from one PostgreSQL database to the other have been written correctly. Any pointers would be appreciated regards Sameer

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  • Fast way to code forms in C# which is bind to SQL data

    - by adopilot
    I am coming from MS-ACESS world and their programing habits, There was nice utility to make form from table, You can simply hit right click on table and make form for it. Now I looking for something similar for Visual Studio and WinForms. I am trying to develop simple application for which I need to have more then 30 forms for handling data, till now I designed database tables, keys and sprocs in SQL2008 and before I start coding forms for handling data, I asking You for main guidelines how to save my time while coding forms.

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  • FileReference.load() not populating FileReference.data.

    - by cookiecaper
    I am trying to use the load method of FileReference object to load the data and use it to display a thumbnail of the selected image. However, after calling fr.load(), fr.data remains null. I'm using Flex Builder 3.0.2 on Windows 7 with Flex SDK 3.4 and Flash Player 10 Debug. If I evaluate fr.load() in Eclipse's watch variables list, I get an error reading "No such variable: load." Anyone know why this is happening?

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  • Server not receiving data from client

    - by Ronald
    I have a small server application I wrote in Java running on my web server. The client application I wrote can connect to the server and it receives data, but the server does not receive any data sent by the client. Any idea what the problem could be? The two communicate fine on my local machine.

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  • Confusion Matrix of Bayesian Network

    - by iva123
    Hi, I'm trying to understand bayesian network. I have a data file which has 10 attributes, I want to acquire the confusion table of this data table ,I thought I need to calculate tp,fp, fn, tn of all fields. Is it true ? if it's then what i need to do for bayesian network. Really need some guidance, I'm lost.

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  • Data Synchronization between Enterprise DataStore and External WebSite DataStore

    - by Yoann. B
    Hi, I've an enterprise database store used by some rich applications and a website with it own database store. Enterprise application work with local data and some of these data (like orders,prices ...) have to be "synchronized" to the web site datastore. On the other side, internet customers are able to edit their profile which have to be "synchronized" to the enterprise datastore too. Basically i need this architecture : WebSite = WebSite Database <= || Internet || <= Enterprise Database <= Rich Applications

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  • Issue in Adding data into database using hibernate

    - by sarah
    Hi , I am getting the following exception "org.hibernate.HibernateException: The database returned no natively generated identity value "while adding data into database i am using the following code.Please let me know what is wrong Sesion session=HibernateUtil.getSession(); Transaction tx = session.beginTransaction(); session.save(user); logger.info("Successfully data insert in database"); tx.commit(); isSaved=true; Thankx

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  • with JQUERY, How to pass a dynamic series of data to the server

    - by nobosh
    What is the recommended way in JQUERY to send a dynamic set of data to the server, the set contains items like: ID: 13 Copy: hello world....hello world....hello world....hello world.... ID: 122 Copy: Ding dong ...Ding dong ...Ding dong ...Ding dong ...Ding dong ... ID: 11233 Copy: mre moremore ajkdkjdksjkjdskjdskjdskjds This could range from 1, to 10 items. What's the best way to structure that data to post to the server with JQUERY? Thanks

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  • How to write a large number of nested records in JSON with Python

    - by jamesmcm
    I want to produce a JSON file, containing some initial parameters and then records of data like this: { "measurement" : 15000, "imi" : 0.5, "times" : 30, "recalibrate" : false, { "colorlist" : [234, 431, 134] "speclist" : [0.34, 0.42, 0.45, 0.34, 0.78] } { "colorlist" : [214, 451, 114] "speclist" : [0.44, 0.32, 0.45, 0.37, 0.53] } ... } How can this be achieved using the Python json module? The data records cannot be added by hand as there are very many.

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  • Export unicode data from mysql

    - by Nayn
    Hi Folks, I have some data in one of my mysql table stored as utf8. The data is some japanese text. I need to export it to excel. Could you tell how to do it? Exporting by SELECT ... INTO OUTFILE returns some plain text file. I'm not sure how to read it back in excel so that japanese character would show properly Thanks Nayn

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  • How to sort a QuantumGrid on data from a different column

    - by norgepaul
    Is there a way to sort Devexpress QuantumGrid rows on data from a different column other than the one whose header has been clicked? For example, when the header of column A is clicked the rows of the grid are sorted on the data from column B. Visually it should still appear that it is column A that has been sorted as the sort glyphys will be shown in column A's header.

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