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  • How to take advantage of subprocess within Django? - Django

    - by RadiantHex
    Hi folks, I'm currently using os.popen() but have been recommended to use subprocess.popen() instead. Any ideas on how I can integrate this? It would be cool and fun to have a Python shell accessible on a Django app. But I reckon that it might be a bit complex to implement. I guess I would have to retrieve the subprocess, as a new request comes in. Any ideas?

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  • Amazon EC2 Ami recommendations for free tier?

    - by Console
    Amazon web services recently introduced a free tier, where you basically get free stuff to try out AWS and run tiny sites and projects. Basically it's free as long as you remain below a certain limit of bandwidth, disk storage etc. Since going over the limits can quickly become quite expensive (for a hobbyist) I would like some recommendations or suggestions about which AMI's I can run on the free tier, for the purpose of trying out Ruby on Rails and/or Django.

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  • We are moving to two servers from one server due to performance issues. How do we monitor the value of this change?

    - by MikeN
    We are moving to two servers from one server due to performance issues. We are moving our MySQL DB to its own dedicated server and will keep the original machine as the front end machine running nginx/apache (Django backend.) How do we monitor the value of this change? It is possible our whole site could actually get slower since the MySQL queries will be going out over a secure remote connection instead of locally?

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  • Configuring varnish and django (apache/modwsgi)

    - by Hedde
    I am trying to work out why my application keeps hitting the database while I have setup varnish infront of apache. I think I am missing some vital configuration, any tips are welcome This is my curl result: HTTP/1.1 200 OK Server: Apache/2.2.16 (Debian) Content-Language: en-us Vary: Accept,Accept-Encoding,Accept-Language,Cookie Cache-Control: s-maxage=60, no-transform, max-age=60 Content-Type: application/json; charset=utf-8 Date: Sat, 15 Sep 2012 08:19:17 GMT Connection: keep-alive My varnishlog: 13 BackendClose - apache 13 BackendOpen b apache 127.0.0.1 47665 127.0.0.1 8000 13 TxRequest b GET 13 TxURL b /api/v1/events/?format=json 13 TxProtocol b HTTP/1.1 13 TxHeader b User-Agent: curl/7.19.7 (universal-apple-darwin10.0) libcurl/7.19.7 OpenSSL/0.9.8r zlib/1.2.3 13 TxHeader b Host: foobar.com 13 TxHeader b Accept: */* 13 TxHeader b X-Forwarded-For: 92.64.200.145 13 TxHeader b X-Varnish: 979305817 13 TxHeader b Accept-Encoding: gzip 13 RxProtocol b HTTP/1.1 13 RxStatus b 200 13 RxResponse b OK 13 RxHeader b Date: Sat, 15 Sep 2012 08:21:28 GMT 13 RxHeader b Server: Apache/2.2.16 (Debian) 13 RxHeader b Content-Language: en-us 13 RxHeader b Content-Encoding: gzip 13 RxHeader b Vary: Accept,Accept-Encoding,Accept-Language,Cookie 13 RxHeader b Cache-Control: s-maxage=60, no-transform, max-age=60 13 RxHeader b Content-Length: 6399 13 RxHeader b Content-Type: application/json; charset=utf-8 13 Fetch_Body b 4(length) cls 0 mklen 1 13 Length b 6399 13 BackendReuse b apache 11 SessionOpen c 92.64.200.145 53236 :80 11 ReqStart c 92.64.200.145 53236 979305817 11 RxRequest c HEAD 11 RxURL c /api/v1/events/?format=json 11 RxProtocol c HTTP/1.1 11 RxHeader c User-Agent: curl/7.19.7 (universal-apple-darwin10.0) libcurl/7.19.7 OpenSSL/0.9.8r zlib/1.2.3 11 RxHeader c Host: foobar.com 11 RxHeader c Accept: */* 11 VCL_call c recv lookup 11 VCL_call c hash 11 Hash c /api/v1/events/?format=json 11 Hash c foobar.com 11 VCL_return c hash 11 VCL_call c miss fetch 11 Backend c 13 apache apache 11 TTL c 979305817 RFC 60 -1 -1 1347697289 0 1347697288 0 60 11 VCL_call c fetch deliver 11 ObjProtocol c HTTP/1.1 11 ObjResponse c OK 11 ObjHeader c Date: Sat, 15 Sep 2012 08:21:28 GMT 11 ObjHeader c Server: Apache/2.2.16 (Debian) 11 ObjHeader c Content-Language: en-us 11 ObjHeader c Content-Encoding: gzip 11 ObjHeader c Vary: Accept,Accept-Encoding,Accept-Language,Cookie 11 ObjHeader c Cache-Control: s-maxage=60, no-transform, max-age=60 11 ObjHeader c Content-Type: application/json; charset=utf-8 11 Gzip c u F - 6399 69865 80 80 51128 11 VCL_call c deliver deliver 11 TxProtocol c HTTP/1.1 11 TxStatus c 200 11 TxResponse c OK 11 TxHeader c Server: Apache/2.2.16 (Debian) 11 TxHeader c Content-Language: en-us 11 TxHeader c Vary: Accept,Accept-Encoding,Accept-Language,Cookie 11 TxHeader c Cache-Control: s-maxage=60, no-transform, max-age=60 11 TxHeader c Content-Type: application/json; charset=utf-8 11 TxHeader c Date: Sat, 15 Sep 2012 08:21:29 GMT 11 TxHeader c Connection: keep-alive 11 Length c 0 11 ReqEnd c 979305817 1347697288.292612076 1347697289.456128597 0.000086784 1.163468122 0.000048399

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  • How to create a WHM/cPanel account, without creating a new sub-domain?

    - by Cyclops
    I have a basic VPS (full root access), with WHM/cPanel, and am learning the ropes. I'm trying to create a new account for an existing domain (mysite.com), and so far WHM won't let me - it either wants a sub-domain or fake domain, but won't allow two accounts for one domain. In the beginning, there was only the root account, and it wouldn't let me login to cPanel - a quick chat with tech support, and I am informed that I need to create a second account, which I did. So now I have an account, call it ns1me, for domain mysite.com. Now I want to create a django account. I go through the same process, but WHM won't allow me to use mysite.com as the domain for django. The docs recommend a sub-domain, so I fill the box in with django.mysite.com. I then realize that has actually created a sub-domain - going to django.mysite.com shows me its home directory, along with helpful information about what version of Apache, Python, and other mods its running (thanks, Apache). I really don't want a sub-domain, so that's out. Another chat with tech support, and they recommend a fake domain name, as it won't create anything. Sure enough, using a domain of djangomysite.com works, and WHM allows me to create a django account. But of course, I can't send email to [email protected] (where I could to [email protected]). What I want, is to be able to create a second account, associated with mysite.com (so I can run cPanel logged in as django, send email to [email protected], etc) - without creating a whole new sub-domain, or fake domain.

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  • GeoDjango: Exceptions for basic geographic queries

    - by omat
    I am having problems with geographic queries with GeoDjango running on SpatiaLite on my development environment. from django.contrib.gis.db import models class Test(models.Model): poly = models.PolygonField() point = models.PointField() geom = models.GeometryField() objects = models.GeoManager() Testing via shell: >>> from geotest.models import Test >>> from django.contrib.gis.geos import GEOSGeometry >>> >>> point = GEOSGeometry("POINT(0 0)") >>> point <Point object at 0x105743490> >>> poly = GEOSGeometry("POLYGON((0 0, 0 1, 1 1, 1 0, 0 0))") >>> poly <Polygon object at 0x105743370> >>> With these definitions, lets try some basic geographic queries. First contains: >>> Test.objects.filter(point__within=poly) Assertion failed: (0), function appendGeometryTaggedText, file WKTWriter.cpp, line 228. Abort trap And the django shell dies. And with within: >>> Test.objects.filter(poly__contains=point) GEOS_ERROR: Geometry must be a Point or LineString Traceback (most recent call last): ... GEOSException: Error encountered checking Coordinate Sequence returned from GEOS C function "GEOSGeom_getCoordSeq_r". >>> Other combinations also cause a variety of exceptions. I must be missing something obvious as these are very basic. Any ideas?

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  • Python: Does one of these examples waste more memory?

    - by orokusaki
    In a Django view function which uses manual transaction committing, I have: context = RequestContext(request, data) transaction.commit() return render_to_response('basic.html', data, context) # Returns a Django ``HttpResponse`` object which is similar to a dictionary. I think it is a better idea to do this: context = RequestContext(request, data) response = render_to_response('basic.html', data, context) transaction.commit() return response If the page isn't rendered correctly in the second version, the transaction is rolled back. This seems like the logical way of doing it albeit there won't likely be many exceptions at that point in the function when the application is in production. But... I fear that this might cost more and this will be replete through a number of functions since the application is heavy with custom transaction handling, so now is the time to figure out. If the HttpResponse instance is in memory already (at the point of render_to_response()), then what does another reference cost? When the function ends, doesn't the reference (response variable) go away so that when Django is done converting the HttpResponse into a string for output Python can immediately garbage collect it? Is there any reason I would want to use the first version (other than "It's 1 less line of code.")?

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  • Using IAM for user authentication

    - by mdavis6890
    I've read lots and lots of posts that touch on what I think should be a very common use case - but without finding exactly what I want, or a simple reason why it can't be done. I have some files on S3. I want to be able to grant certain users access to certain files, via a front end that I build. So far, I've made it work this way: I built the front end in Django, using it's built-in Users and Groups I have a model for Buckets, in which I mirror my S3 buckets. I have a m2m relationship from groups to buckets representing the S3 permissions. The user logs in and authenticates against Django's users. I grab from Django the list of buckets that the user is allowed to see I use boto to grab a list of links to files from those buckets and display to user. This works, but isn't ideal, and also just doesn't feel right. I've got to keep a mirror of the buckets, and I also have to maintain my own list of user/passwords and permissions, when AWS already has all that built in. What I really want is to simply create the users in IAM and use group permissions in IAM to control access to the S3 buckets. No duplication of data or function. My app would request a UN/PW from the user and use that to connect to IAM/S3 to pull the list of buckets and files, then display links to the user. Simple. How can I, or why can't I? Am I looking at this the wrong way? What's the "right" way to address this (I assume) very common use case?

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  • VTD-XML Parsing Performance (speed critical factor). Requesting Feedback/Comments

    - by andreas
    Hello, I am about to use VTD-XML (found at http://vtd-xml.sourceforge.net/) but I am interested in getting real-case usage feedback, by any one that has used the library and has any comments. At the URL (http://vtd-xml.sourceforge.net/) there are benchmarks but if someone has used VTD-XML and has comments FOR it I would like to hear them. Speed is a critical factor in the application and comments after real-case usage, by developers, is what i am looking for. Regards,

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  • Hooking into comment_text() to add surrounding tag

    - by Stefan Glase
    Trying to hook into the function comment_text() supplied by Wordpress API to wrap the output of every comment into a <div>...</div> container I am running into the following problem: Without my added filter the output of comment_text() looks like this: <p>Hello User!</p> <p>Thank you for your comment.</p> <p>Stefan</p> Thats fine but as I said I would like to have it wrapped into a <div class="comment-text">...</div>. As far as I know the correct way doing this would be in adding a filter to functions.php of my theme and so I did: function stefan_wrap_comment_text($content) { return "<div class=\"comment-text\">". $content ."</div>"; } add_filter('comment_text', 'stefan_wrap_comment_text'); As I can see from the output the given filter works but it has a negative sideeffect to the first paragraph of the content as you can see in the following example. The first paragraph should be <p>Hello User!</p> but looks like this: Hello User!. <div class="comment-text"> Hello User! <p>Thank you for your comment.</p> <p>Stefan</p> </div> Any ideas or hints what I am doing wrong?

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  • Should all public methods of an API be documented?

    - by cynicalman
    When writing "library" type classes, is it better practice to always write markup documentation (i.e. javadoc) in java or assume that the code can be "self-documenting"? For example, given the following method stub: /** * Copies all readable bytes from the provided input stream to the provided output * stream. The output stream will be flushed, but neither stream will be closed. * * @param inStream an InputStream from which to read bytes. * @param outStream an OutputStream to which to copy the read bytes. * @throws IOException if there are any errors reading or writing. */ public void copyStream(InputStream inStream, OutputStream outStream) throws IOException { // copy the stream } The javadoc seems to be self-evident, and noise that just needs to be updated if the funcion is changed at all. But the sentence about flushing and not closing the stream could be valuable. So, when writing a library, is it best to: a) always document b) document anything that isn't obvious c) never document (code should speak for itself!) I usually use b), myself (since the code can be self-documenting otherwise)...

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  • Shorter Rails routes

    - by Puru puru rin..
    Hello, I have a thing blog application, and I would like to shorten my routes. Here there are: Blog::Application.routes.draw do resources :categories do resources :articles do resources :comments end end A rake routes command build the following lines: GET /categories/:category_id/articles/:article_id/comments(.:format) {:controller=>"comments", :action=>"index"} category_article_comments POST /categories/:category_id/articles/:article_id/comments(.:format) {:controller=>"comments", :action=>"create"} new_category_article_comment GET /categories/:category_id/articles/:article_id/comments/new(.:format) {:controller=>"comments", :action=>"new"} GET /categories/:category_id/articles/:article_id/comments/:id(.:format) {:controller=>"comments", :action=>"show"} PUT /categories/:category_id/articles/:article_id/comments/:id(.:format) {:controller=>"comments", :action=>"update"} category_article_comment DELETE /categories/:category_id/articles/:article_id/comments/:id(.:format) {:controller=>"comments", :action=>"destroy"} edit_category_article_comment GET /categories/:category_id/articles/:article_id/comments/:id/edit(.:format) {:controller=>"comments", :action=>"edit"} GET /categories/:category_id/articles(.:format) {:controller=>"articles", :action=>"index"} category_articles POST /categories/:category_id/articles(.:format) {:controller=>"articles", :action=>"create"} new_category_article GET /categories/:category_id/articles/new(.:format) {:controller=>"articles", :action=>"new"} GET /categories/:category_id/articles/:id(.:format) {:controller=>"articles", :action=>"show"} PUT /categories/:category_id/articles/:id(.:format) {:controller=>"articles", :action=>"update"} category_article DELETE /categories/:category_id/articles/:id(.:format) {:controller=>"articles", :action=>"destroy"} edit_category_article GET /categories/:category_id/articles/:id/edit(.:format) {:controller=>"articles", :action=>"edit"} GET /categories(.:format) {:controller=>"categories", :action=>"index"} categories POST /categories(.:format) {:controller=>"categories", :action=>"create"} new_category GET /categories/new(.:format) {:controller=>"categories", :action=>"new"} GET /categories/:id(.:format) {:controller=>"categories", :action=>"show"} PUT /categories/:id(.:format) {:controller=>"categories", :action=>"update"} category DELETE /categories/:id(.:format) {:controller=>"categories", :action=>"destroy"} edit_category GET /categories/:id/edit(.:format) {:controller=>"categories", :action=>"edit"} As can be seen, each resource is ordered in a tree. So I believe that, it's could be interesting to simplify my routes such as for example: /categories/ => / /categories/:id => /:id /categories/:category_id/articles/ => /:category_id/articles /categories/:category_id/articles/:id => /:category_id/:id /categories/:category_id/articles/:article_id/comments/ => /:category_id/:article_id/comments /categories/:category_id/articles/:article_id/comments/:id => /:category_id/:article_id/:id It's more DRY, is't it? :) Does Rails 3 provides a easy way to do so, with an HTTP verbs mapping to controller actions automatically? Thanks anyone.

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  • VS2010 method comment block pretty format.

    - by camelCase
    I have just installed the lastest RC of VS2010, which for me represents a shift from VS2008. A new comment formatting feature that I was looking forward to appears to be missing. About 6 months ago I read a Scott Gu blog post that mentioned a new VS2010 feature that would format /// style method comment blocks into more readable formatted regions inline with other code. The Scott Gu blog did not provide a screen shot but I was expecting the VS2010 editor to remove the XML tags from the /// method comment block and render just the essential text comment. Was this feature pulled during the Beta, or is there an option switch urking somewhere?

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  • Do you have any tips for commenting code?

    - by Rob Wells
    G'day, I've read both of Steve McConnell's excellent Code Complete books "Code Complete" and "Code Complete 2" and was wondering if people have any other suggestions for commenting code.co My commenting mantra could be summed up by the basic idea of expressing "what the code below cannot say". While enjoying this interesting blog post by Jeff about commenting I was still left wondering "When coding, when do you feel a comment is required?"

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  • How do I add the Disqus comment system to a Rails application in a similar fashion to Wordpress?

    - by Eric Lubow
    In Wordpress, the Disqus plugin allows you to choose to subscribe to a post via RSS or via email. Is there a pluign similar to the Wordpress plugin for Rails. Norman's Disqus plugin just uses the Disqus site to make it work. I was hoping to have things more stored locally. For an example of what I mean, take a look at this blog entry. I already know that since Rails (this application in particular) is using Authlogic (plus Facebook Connect), that Disqus cannot be too tightly coupled with the Authentication system. Has anyone ever done this or figured out a way to do this?

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  • Comment reply procedure using jquery and php?

    - by Prashant
    I have Commenting system in my app. For a single video entry anyone can post a comment and someone else can post reply to that comment and replies, cannot have thier further reples, similar to StackOverflow is doing (1 Answer, and thier 1 or more replies). I want the similar functionality what SO has, Let's I have the following HTML <div class="comment" id="comment-908"> First comment </div> <div class="reply"> <div id="reply-909> reply 1 </div> <div id="reply-910> reply 2 </div> <div id="reply-911> reply 3 </div> </div> <form id="reply-form"> <textarea id="replycomment" name="replycomment"></textarea> <input type="submit" name="submit-reply" value="add reply" /> </form> Now above HTML is a sample which I have created, When someone will click on "add reply" button then I am using jquery to post there reply. Now I want to know that there will be multiple comment and multiple add reply forms. So who clicks on which button and for which comment someone wants to post a reply, how will i know that? The above HTML is not in correct way, please suggest me the correct HTML flow which I can use and how to work with jquery? now I want to know when soe

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  • VSDoc alternative?

    - by jonathanconway
    VSDoc is an awesome way of commenting Javascript, and I particularly like the ability to make one Javascript file 'depend' on another. This paves the way for Javascript minifiers/combiners that take into account proper ordering of script includes. The only thing that might bother some is that it's VS-Doc. Are there any competing standards that are designed to be vendor-neutral? And how widely is the VSDoc standard used by non-Microsoft IDEs such as Eclipse, etc?

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  • Regex to strip phpdoc multiline comment

    - by Reveller
    I have this: /** * @file * API for loading and interacting with modules. * More explaination here. * * @author Reveller <me@localhost> * @version 19:05 28-12-2008 */ I'm looking for a regex to strip all but the @token data, so the result would be: @file API for loading and interacting with modules. More explaination here. @author Reveller <me@localhost> @version 19:05 28-12-2008 I now have this: $text = preg_replace('/\r?\n *\* */', ' ', $text); It does the job partially: it only removes the * in front of each line. Who could help me so it also strips /** and the final slash /? Any help would be greatly appreciated! P.S: If, for instance, the commentlbock would contain something like /** * @foo Here's some slashes for ya: / and \ */ Then obviously the slashes after @foo may not be stripped. The reult would have to be: @foo Here's some slashes for ya: / and \ I hope there's a regex guru out there :-)

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  • Python Django vs ASP.NET MVC

    - by eddyc05
    Hey guys ! i'm fairly new at web development scene and i was wondering if you guys can help me break up the pros and cons of using python django vs asp.net mvc besides the maturity level of its framework. I have intermediate experience with JAVA. As of right now, i'm leaning towards python but i just wanted to make sure i am making the right choice. I find myself limited with books available on asp.net web developments. I am aware that there is the storefront example on the official asp.net site. However, that tutorial was a little hard for me to follow. I've done a research around and was hoping python could be my next available choice. There are more tutorials available online for python anyways. What do you guys think??

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  • Stop doxygen (in some directories) for recursive input

    - by ncohen
    Hi everyone, I've used this tuto (http://www.duckrowing.com/2010/03/18/documenting-objective-c-with-doxygen-part-ii/) to create my documentation... I would like to run doxygen in some directories and not in others! The problem is that I don't want to reorganize all the directories! Is it possible to put a file in the directories I don't want doxygen to run into? Thanks in advance!

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