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• Automatic database schema generation and migration with Perl

  - by pistacchio

  In Ror or Django or web2py you can "describe" a database (as a set of classes that remaps to tables) and the framework (having being provided with a connection string to the desired database) generates the tables, fields, relations and in the case of RoR and web2py it also keeps it up-to-date (eg, removing a class drops the table, adding a property to the class triggers an "alter table add" etc). Is there any Perl module that does the same? Eg, it takes the YAML/XML/JSON description of a database as input and modifies/generates the database schema accordingly?

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• best way to escape and create a slug

  - by Mac Taylor

  hey guys im somehow confused in using proper functions to escape and create a slug i used this : $slug_title = mysql_real_escape_string()($mtitle); but someone told me not to use it and use urlencode() which one is better for slugs and security as i can see in SO , it inserts - between words : http://stackoverflow.com/questions/941270/validating-a-slug-in-django thanx in advanced

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• djaongo or zope ?

  - by subhransu

  i want to create a website n i am confused which web framework to use plz recommend me which framework is better ,django or zope .i am using Python .

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• Help with SSh Tunnel [closed]

  - by Andrew Johnson

  I am running a Django instance locally and doing some Facebook development. So, I set up a port on a remote machine to forward to my local machine, so that Facebook can hit the web server, and have the requests forwarded to my local machine. Unfortunately, I'm getting the following error in my browser when I try and access the page: http://dev.thegreathive.com/ Any idea what I'm doing wrong? I think the problem is on my local machine, since if I kill the SSH tunnel, the error message changes.

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• DatabaseError: current transaction is aborted, commands ignored until end of transaction block

  - by jack

  I got a lot of "DatabaseError: current transaction is aborted, commands ignored until end of transaction block" errors after changed from python-psycopg to python-psycopg2 as Django project's database engine. The code remains the same, just dont know where those errors are from.

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• Repoze.bfg or Grok

  - by fridder

  Hello, I am about to take the head long plunge into Zope land and am wondering which framework would fit my needs better. I have some experience toying around with django and the primary reason I am switching to a zope-based framework is ZPT and also needing to occasionally do things with Plone. Both seem to be well run projects I am mainly wondering which would have the better learning overlap with Plone? Thanks in advance!

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• installing Python application with Python under windows

  - by mack369

  My application uses many Python libraries (Django, Twisted, xmlrpc). I cannot expect that the end user has the Python installed with all needed libraries. I've created a fancy installer for my application using Inno Setup, but I don't think that it is a good solution to execute 5 other setup programs from my installer. It would be annoying to the user to click "Next" button 15 times. Is there any way to do that quietly?

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• How to add a Facebook Event with new Graph API

  - by kkubasik

  I am trying to create an event using Facebooks api. (From a django app) Has anyone created an event with the new graph api?

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• Convert or strip out "illegal" Unicode characters

  - by Oli

  I've got a database in MSSQL that I'm porting to SQLite/Django. I'm using pymssql to connect to the database and save a text field to the local SQLite database. However for some characters, it explodes. I get complaints like this: UnicodeDecodeError: 'ascii' codec can't decode byte 0x97 in position 1916: ordinal not in range(128) Is there some way I can convert the chars to proper unicode versions? Or strip them out?

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• google-app-engine: json module

  - by fmsf

  Hey i'm using JSON with appengine. I'm using json for comunication, so in the python side i have import json the error i'm getting is this: <class 'django.core.exceptions.ViewDoesNotExist'>: Could not import views.ganttapp. Error was: No module named json In my stand alone this works great, is there any problem with json on the app engine? or should I use another module? I dunno if you can open this but here it goes: http://ganttapp.appspot.com/newgantt you can find the error here

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• JSON serialization of Google App Engine models

  - by user111677

  I've been search for quite a while with no success. My project isn't using Django, is there a simple way to serialize App Engine models (google.appengine.ext.db.Model) into JSON or do I need to write my own serializer? My model class is fairly simple. For instance: class Photo(db.Model): filename = db.StringProperty() title = db.StringProperty() description = db.StringProperty(multiline=True) date_taken = db.DateTimeProperty() date_uploaded = db.DateTimeProperty(auto_now_add=True) album = db.ReferenceProperty(Album, collection_name='photo') Thanks in advance.

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• GAE datastore backup

  - by Joel

  Hey all, I've seen there is a datastore backup utility by "Aral Balkan" ( http://code.google.com/intl/iw-IL/appengine/articles/gae_backup_and_restore.html ). However, this utility is only applicable for Django framework and not webapp. Is there any utility out there for webapp as well? Thanks Joel

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• Facebook Like-button problem

  - by David

  Hi there, I'm using this code to implement the like button <fb:like layout="button_count" show_faces="false" width="450"></fb:like> But when I try to click it the counter is increased for about 1 second and then it goes back to zero again. I can't see on my facebook profile that i've liked something either. Someone have a solution for this? I'm using the newest JavaScript SDk in an Google App engine/ Django environment.

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• What's your experience developing on Google App Engine?

  - by MrDatabase

  Is GQL easy to learn for someone who knows SQL? How is Django/Python? Does App Engine really make scaling easy? Is there any built-in protection against "GQL Injections"? And so on... I'd love to hear the not-so-obvious ups and downs of using app engine. Cheers!

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• MySQL vs PostgreSQL for Web Applications

  - by cnu

  I am working on a web application using Python (Django) and would like to know whether MySQL or PostgreSQL would be better when deploying for production. In one podcast Joel said that he had some problems with MySQL and the data wasn't consistent. I would like to know whether someone had any such problems. Also when it comes to performance which can be easily tweaked?

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• Learn ASP.NET or Python for web development?

  - by user300371

  I am new to programming and only know html,css,PHP and would like to start learning another new language. I am focused on web development and would just like to get your opinion on ASP.net and python. Which language would serve me best in making sites as to general programming? ASP.NET or django python? I know Python is "easy to learn" and similar to PHP, but ASP.net is also a good language.

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• Website in right-to-left languages (Arabic, Hebrew)

  - by jack

  I currently developing a multi-language interface for a Django project. But when I started to work on Arabic and Hebrew languages, I noticed all pages messed up after dir="rtl" to html tag (according to instructions on http://www.w3.org/International/tutorials/bidi-xhtml/) Does that mean I need separate stylesheets for right-to-left languages?

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• CherryPy and RESTful web api

  - by hyperboreean

  What's the best approach of creating a RESTful web api in CherryPy? I've been looking around for a few days now and nothing seems great. For Django it seems that are lots of tools to do this, but not for CherryPy or I am not aware of them

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• AutoGen DB models for ASP .NET

  - by Tereno

  Hi there, I am wondering if there's anything out there for ASP .NET that is similar to Django or Ruby on Rails. Specifically, I'm looking for something that allows me to auto-generate the database models by specifying my classes in the controller and what not. Would I be able to achieve those functionality with IronPython or IronRuby? Thanks!

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• Is there a way to download the rendered view of a google motion-chart as a .png?

  - by Johannes Meier

  I am using Google motion-charts in a web-site developed in python/django. Is there a way to save the rendered view of a google motion-chart as an image (server-side)? For the more basic chart types - such as scatter diagrams - the command chart.download('scatter-random-marker-sizes.png') works fine, but I have not found an equivalent for motion charts.

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• Are there any examples/tutorials of using Spring 3.0 with Cassandra as a backend?

  - by zeroDivisible

  Hello, As I had written in title, I am trying to learn Spring 3.0 (I already know Django, Pylons and few simpler MVC frameworks) and try to use Cassandra as a backend for my web application. Are there any real world examples of doing this? Or maybe some tutorials? I know about the existence of documentation of both technologies, yet I am looking for something "faster" to read and get me rolling.

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• As an experiment I want to work a bit with AWS. How much might I expect to pay?

  - by dartdog

  I'm about to go to Pycon, and while I have my hosting at Webfaction one of the tutorials (JKM) asks for students to have AWS instances. I've been trying to figure out what some minimum charge examples might look like? I'll have a lamp server with Django and a requisite amount of storage but next to no traffic,,Any one have some guidance/advice? My Google searches and look here did not turn up much useful info?

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• What's an appropriate HTTP status code to return by a REST API service for a validation failure?

  - by michaeljoseph

  I'm currently returning 401 Unauthorized whenever I encounter a validation failure in my Django/Piston based REST API application. Having had a look at the HTTP Status Code Registry I'm not convinced that this is an appropriate code for a validation failure, what do y'all recommend? 400 Bad Request 401 Unauthorized 403 Forbidden 405 Method Not Allowed 406 Not Acceptable 412 Precondition Failed 417 Expectation Failed 422 Unprocessable Entity 424 Failed Dependency Update: "Validation failure" above means an application level data validation failure ie. incorrectly specified datetime, bogus email address etc.

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• Emulating a "OR" condition in Datastore.

  - by Jelle

  Hello again, I'm using the Google App Engine with Python (Django). How to emulate "SELECT * FROM bla WHERE touser = common.userstats("key") OR fromuser = common.userstats("key") ORDER BY date ASC"? I was thinking of something like this, but I can't get it in the order I want. recievedlist = models.P1.all() recievedlist.filter("touser =", common.userstats("key")) plus1list = recievedlist.fetch(50) sendlist = models.P1.all() sendlist.filter("fromuser =", common.userstats("key")) plus1list += sendlist.fetch(50) # order plus1list

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• How to decide on what hardware to deploy web application

  - by Yuval A

  Suppose you have a web application, no specific stack (Java/.NET/LAMP/Django/Rails, all good). How would you decide on which hardware to deploy it? What rules of thumb exist when determining how many machines you need? How would you formulate parameters such as concurrent users, simultaneous connections and DB read/write ratio to a decision on how much, and which, hardware you need? Any resources on this issue would be very helpful...

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