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• Django dislaying upload file content

  - by dana

  hello, i have an application that loads different documents to the server, and allows users to read documents' content. i am uploading the documents to the server, and then i try to read the courses by id, like: def view_course(request,id): u = Courses.objects.get(pk=id) etc But i don't find anywhere : how can i actually read the content of a /.doc/.pdf/.txt and display it on a web page? thanks in advance!

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• Default value for file path in function gives SyntaxError. Work around?

  - by LtPinback

  for this, import os.path def f(data_file_path=os.path.join(os.getcwd(),'temp'),type): ... return data I get this, SyntaxError: non-default argument follows default argument Is there a way to make this work or do I have to define a variable such as, rawdata_path = os.path.join(os.getcwd(),'temp') and then plug that into the function?

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• Grails: Services VS Groovy classes

  - by Olexandr

  Documentation says: The Grails team discourages the embedding of core application logic inside controllers, as it does not promote re-use and a clean separation of concerns. I have one API controller and a few Groovy classes in src/groovy folder. Those classes just implements my application logic so actions in API controller works in this way: //index page def index = { render new IndexApi().index(params) as JSON } I'm curious - is there any reason to move my application logic from plain groovy classes into services ?

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• In Rails Can we pass a parameters to a new Action

  - by fenec

  i would like to write a message using an instince variable in the new invition action like this. redirect_to new_invitation_path("invite your friend") Controller invitations: def new(message) @message = message @from_user_id = facebook_session.user.to_s end Apparently it is not possible how can i find a way around this?

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• Please explain this python behavior

  - by StackUnderflow

  class SomeClass(object): def __init__(self, key_text_pairs = None): ..... for key, text in key_text_pairs: ...... ...... x = SomeClass([1, 2, 3]) The value of key_text_pairs inside the init is None even if I pass a list as in the above statement. Why is it so?? I want to write a generic init which can take all iterator objects... Thanks

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• Send an XML message to Amazon SQS

  - by bartligthart

  I am a newbie to Amazon SQS and ruby on rails. And i am working on a project that some XML messages must be send to SQS. How do i do that? Now i have this in the controller after the .save def create @thing = Thing.new(params[:thing]) respond_to do |format| if @thing.save message = @thing.to_xml and in the model inputqueue.send_message(message) Is this the way i can send an XML file to SQS or??

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• Type hinting in Python

  - by pingvinus

  I'm studying Python after a lot of PHP experience and it would be handy to have type-hinting in Python. Looks like eclipse + pydev doesn't support this. Any suggestions? For example, I want my IDE to show function docstrings and types, when I use it, like: def f(x: int) -> int: r"""Adds 3 to x""" return x + 3 f( #and now IDE shows everything about types

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• Django - calling full_clean() inside of clean() equivalent?

  - by orokusaki

  For transaction purposes, I need all field validations to run before clean() is done. Is this possible? My thinking is this: @transaction.commit_on_success def clean(self): # Some fun stuff here. self.full_clean() # I know this isn't correct, but it illustrates my point. but obviously that's not correct, because it would be recursive. Is there a way to make sure that everything that full_clean() does is done inside clean()?

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• Is this a valid quine?

  - by fsm

  def start(fileName): fileReader = open(fileName) for row in fileReader: print row, if __name__ == "__main__": import sys if len(sys.argv) <= 1: print "usage quine /path/to/file" sys.exit(-1) fileName = sys.argv[0] start(fileName) python quine.py foo

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• How to convert attribute name to string?

  - by Acidburn2k

  Lets say we have some basic AR model. class User < ActiveRecord::Base attr_accessible :firstname, :lastname, :email end ... some_helper_method(attrib) ... def Now I would like to pass someuser.firstname to helper and I would like to get both the value and the attribute name, for example: some_helper_method(someuser.firstname) > "firstname: Joe" some_helper_method(someuser.lastname) > "lastname: Doe"

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• Using functions in models to dynamically fill fields on object creation in Django

  - by danspants

  Within Django, can a function local to a model be called on object creation to dynamically fill a field? class someModel(models.Model): id = models.FloatField(primary_key=True, default=generate_id()) def generate_id(self): newId=time.time() return newId So far I haven't had any luck with getting it to work or with locating documentation that covers it.

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• How to set up my belongs_to and has_many reference

  - by dagda1

  Hi, I have an ExpenseType object that I have created with the following migration: class CreateExpenseTypes < ActiveRecord::Migration def self.up create_table :expense_types do |t| t.column :name, :string, :null => false t.timestamps end end I can see the table name is the pluralised expense_types. My question is, how do I reference this type in a belongs_to relationship? Is it: belongs_to :expensetype or is it belongs_to :expense_type I do not seem able to set it up correctly. Cheers

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• python unittest howto

  - by zubin71

  I`d like to know how I could unit-test the following module. def download_distribution(url, tempdir): """ Method which downloads the distribution from PyPI """ print "Attempting to download from %s" % (url,) try: url_handler = urllib2.urlopen(url) distribution_contents = url_handler.read() url_handler.close() filename = get_file_name(url) file_handler = open(os.path.join(tempdir, filename), "w") file_handler.write(distribution_contents) file_handler.close() return True except ValueError, IOError: return False

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• Can't find method in the activity

  - by Synesso

  I'm starting with Scala + Android. I'm trying to wire a button action to a button without the activity implementing View.OnClickListener. The button click fails at runtime because the method cannot be found. The document I'm working through says that I need only declare a public void method taking a View on the action, and use that method name in the layout. What have I done wrong? MainActivity.scala package net.badgerhunt.hwa import android.app.Activity import android.os.Bundle import android.widget.Button import android.view.View import java.util.Date class MainActivity extends Activity { override def onCreate(savedInstanceState: Bundle) = { super.onCreate(savedInstanceState) setContentView(R.layout.main) } def calculate(button: View): Unit = println("calculating with %s ...".format(button)) } res/layout/main.xml <?xml version="1.0" encoding="utf-8"?> <Button xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/button" android:text="" android:onClick="calculate" android:layout_width="fill_parent" android:layout_height="fill_parent"/> the failure onclick D/AndroidRuntime( 362): Shutting down VM W/dalvikvm( 362): threadid=3: thread exiting with uncaught exception (group=0x4001b188) E/AndroidRuntime( 362): Uncaught handler: thread main exiting due to uncaught exception E/AndroidRuntime( 362): java.lang.IllegalStateException: Could not find a method calculate(View) in the activity E/AndroidRuntime( 362): at android.view.View$1.onClick(View.java:2020) E/AndroidRuntime( 362): at android.view.View.performClick(View.java:2364) E/AndroidRuntime( 362): at android.view.View.onTouchEvent(View.java:4179) E/AndroidRuntime( 362): at android.widget.TextView.onTouchEvent(TextView.java:6540) E/AndroidRuntime( 362): at android.view.View.dispatchTouchEvent(View.java:3709) E/AndroidRuntime( 362): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:884) E/AndroidRuntime( 362): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:884) E/AndroidRuntime( 362): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:884) E/AndroidRuntime( 362): at com.android.internal.policy.impl.PhoneWindow$DecorView.superDispatchTouchEvent(PhoneWindow.java:1659) E/AndroidRuntime( 362): at com.android.internal.policy.impl.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1107) E/AndroidRuntime( 362): at android.app.Activity.dispatchTouchEvent(Activity.java:2061) E/AndroidRuntime( 362): at com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchTouchEvent(PhoneWindow.java:1643) E/AndroidRuntime( 362): at android.view.ViewRoot.handleMessage(ViewRoot.java:1691) E/AndroidRuntime( 362): at android.os.Handler.dispatchMessage(Handler.java:99) E/AndroidRuntime( 362): at android.os.Looper.loop(Looper.java:123) E/AndroidRuntime( 362): at android.app.ActivityThread.main(ActivityThread.java:4363) E/AndroidRuntime( 362): at java.lang.reflect.Method.invokeNative(Native Method) E/AndroidRuntime( 362): at java.lang.reflect.Method.invoke(Method.java:521) E/AndroidRuntime( 362): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860) E/AndroidRuntime( 362): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618) E/AndroidRuntime( 362): at dalvik.system.NativeStart.main(Native Method) E/AndroidRuntime( 362): Caused by: java.lang.NoSuchMethodException: calculate E/AndroidRuntime( 362): at java.lang.ClassCache.findMethodByName(ClassCache.java:308) E/AndroidRuntime( 362): at java.lang.Class.getMethod(Class.java:1014) E/AndroidRuntime( 362): at android.view.View$1.onClick(View.java:2017) E/AndroidRuntime( 362): ... 20 more

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• ctags doesn't undestand -e option (no exuberant tags option)

  - by Thr4wn

  When I type ctags -e it returns an error saying it doesn't know that command line option. I thought it should know about exuberant tags because etags works on cli. Also, I recieve the following error: ctags: unrecognized option --langdef=arc and I have the following in my ~/.ctags file: --langdef=arc --langmap=arc:.arc --regex-arc=/^\(def ([a-zA-Z1-9_*\/<>-]+)/\1/ --regex-arc=/^\(= ([a-zA-Z1-9_*\/<>-]+)/\1/ --regex-scheme=/^\(xdef ([a-zA-Z1-9_*\/<>-]+)/\1/

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• Rails class << self

  - by xpepermint

  Hey. I would like to understand what "class << self" stands for in the next example. module Utility class Options #:nodoc: class << self def parse(args) end end end end Thx!

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• Login and Redirect

  - by xRobot

  This is my login views: def login(request): redirect_to = request.REQUEST.get("next") if request.method == 'POST': formL = LoginForm(data=request.POST) if formL.is_valid(): if not redirect_to or '//' in redirect_to or ' ' in redirect_to: redirect_to = "/blogs/" from django.contrib.auth import login login(request, formL.get_user()) if request.session.test_cookie_worked(): request.session.delete_test_cookie() return HttpResponseRedirect(redirect_to) else: formL = LoginForm(request) request.session.set_test_cookie() return render_to_response('blogs.html', { 'formL': formL, }, context_instance=RequestContext(request)) login = never_cache(login) When I go, for example, to example.com/myblog/ then I have been redirect to example.com/accounts/login/?next=/myblog/ but when I insert user and psw for login then I have been redirect to /blogs/ and not /myblog/ Why ?

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• Adding extensions to a stdlib class in a ruby on rails project

  - by Frank

  Hey, where would I place additions to stdlib classes in a rails project? Let's say something like: class Date def foo 'foo' end end I thought about the initializer folder but it somehow felt wrong. Ideas?

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• Encode mail as quoted-printable before sending in Rails

  - by macek

  I saw this question and couldn't make use of it: http://stackoverflow.com/questions/1034135/ruby-email-encoding-and-quoted-printable-content My email is going out as unencoded text/html. Any help? class UserMailer < ActionMailer::Base def welcome_mail(user) recipients user.email from "[email protected]" subject "Thanks for registering" body :user => user end end

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• How to get the list of price offers on an item from Amazon with python-amazon-product-api item_looku

  - by miernik

  I am trying to write a function to get a list of offers (their prices) for an item based on the ASIN: def price_offers(asin): from amazonproduct import API, ResultPaginator, AWSError from config import AWS_KEY, SECRET_KEY api = API(AWS_KEY, SECRET_KEY, 'de') str_asin = str(asin) node = api.item_lookup(id=str_asin, ResponseGroup='Offers', Condition='All', MerchantId='All') for a in node: print a.Offer.OfferListing.Price.FormattedPrice I am reading http://docs.amazonwebservices.com/AWSECommerceService/latest/DG/index.html?ItemLookup.html and trying to make this work, but all the time it just says: Failure instance: Traceback: <type 'exceptions.AttributeError'>: no such child: {http://webservices.amazon.com/AWSECommerceService/2009-10-01}Offer

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• How Can I Populate Default Form Data with a ManyToMany Field?

  - by b14ck

  Ok, I've been crawling google and Django documentation for over 2 hours now (as well as the IRC channel on freenode), and haven't been able to figure this one out. Basically, I have a model called Room, which is displayed below: class Room(models.Model): """ A `Partyline` room. Rooms on the `Partyline`s are like mini-chatrooms. Each room has a variable amount of `Caller`s, and usually a moderator of some sort. Each `Partyline` has many rooms, and it is common for `Caller`s to join multiple rooms over the duration of their call. """ LIVE = 0 PRIVATE = 1 ONE_ON_ONE = 2 UNCENSORED = 3 BULLETIN_BOARD = 4 CHILL = 5 PHONE_BOOTH = 6 TYPE_CHOICES = ( ('LR', 'Live Room'), ('PR', 'Private Room'), ('UR', 'Uncensored Room'), ) type = models.CharField('Room Type', max_length=2, choices=TYPE_CHOICES) number = models.IntegerField('Room Number') partyline = models.ForeignKey(Partyline) owner = models.ForeignKey(User, blank=True, null=True) bans = models.ManyToManyField(Caller, blank=True, null=True) def __unicode__(self): return "%s - %s %d" % (self.partyline.name, self.type, self.number) I've also got a forms.py which has the following ModelForm to represent my Room model: from django.forms import ModelForm from partyline_portal.rooms.models import Room class RoomForm(ModelForm): class Meta: model = Room I'm creating a view which allows administrators to edit a given Room object. Here's my view (so far): def edit_room(request, id=None): """ Edit various attributes of a specific `Room`. Room owners do not have access to this page. They cannot edit the attributes of the `Room`(s) that they control. """ room = get_object_or_404(Room, id=id) if not room.is_owner(request.user): return HttpResponseForbidden('Forbidden.') if is_user_type(request.user, ['admin']): form_type = RoomForm elif is_user_type(request.user, ['lm']): form_type = LineManagerEditRoomForm elif is_user_type(request.user, ['lo']): form_type = LineOwnerEditRoomForm if request.method == 'POST': form = form_type(request.POST, instance=room) if form.is_valid(): if 'owner' in form.cleaned_data: room.owner = form.cleaned_data['owner'] room.save() else: defaults = {'type': room.type, 'number': room.number, 'partyline': room.partyline.id} if room.owner: defaults['owner'] = room.owner.id if room.bans: defaults['bans'] = room.bans.all() ### this does not work properly! form = form_type(defaults, instance=room) variables = RequestContext(request, {'form': form, 'room': room}) return render_to_response('portal/rooms/edit.html', variables) Now, this view works fine when I view the page. It shows all of the form attributes, and all of the default values are filled in (when users do a GET)... EXCEPT for the default values for the ManyToMany field 'bans'. Basically, if an admins clicks on a Room object to edit, the page they go to will show all of the Rooms default values except for the 'bans'. No matter what I do, I can't find a way to get Django to display the currently 'banned users' for the Room object. Here is the line of code that needs to be changed (from the view): defaults = {'type': room.type, 'number': room.number, 'partyline': room.partyline.id} if room.owner: defaults['owner'] = room.owner.id if room.bans: defaults['bans'] = room.bans.all() ### this does not work properly! There must be some other syntax I have to use to specify the default value for the 'bans' field. I've really been pulling my hair out on this one, and would definitely appreciate some help. Thanks!

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• Rails logger messages test.log?

  - by Dave Paroulek

  Is it possible to configure rails to show logger.debug messages (from logger.debug statements inside controllers) to display inside test.log (or to the console) when running unit and functional tests? I added the following to test_helper.rb. I see messages from logger.debug statements directly inside tests but no messages from logger statements inside controller methods? def logger RAILS_DEFAULT_LOGGER end

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• main vs initialize in Ruby

  - by Dave

  Okay, so I've looked through a couple of my ruby books and done some googling to no avail. What is the difference between main and initialize in Ruby? I've seen code that uses class Blahblah def main some logic here end #more methods... end and then calls it using Blahblah.new. Isn't new reserved only for initialize? if not, then what's the difference between the two?

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• scala actor message definition

  - by BenZen

  Do i need to define class for message i want to retrieve on a scala actor? i trying to get this up where am i wrong def act() { loop { react { case Meet = foundMeet = true ; goHome case Feromone(qty) if (foundMeet == true) = sender ! Feromone(qty+1); goHome }}}

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• User Mailer Failing

  - by Trevor Nederlof

  I have setup a process in my User model to send a bunch of @users to a mailing script, user_mailer.rb I am using the http://postageapp.com app to send out emails. The users are getting to the User_mailer but I am getting an error from there. Can anyone please point me in the right direction. User Model: class User < ActiveRecord::Base acts_as_authentic def self.mail_out weekday = Date.today.strftime('%A').downcase @users = find(:all, :conditions => {"#{weekday}sub".to_sym => 't'}) UserMailer.deliver_mail_out(@users) end end User_mailer.rb class UserMailer < ActionMailer::Base def mail_out(users) @recipients = { } users.each do |user| @recipients[user.email] = { :zipcode => user.zipcode } end from "[email protected]" subject "Check out the trailer of the day!" body :user => user end end mail_out.html.erb {{zipcode}}, Please check out the trailer of the day at http://www.dailytrailer.net Thank you! -- The DailyTrailer.net Team User db schema create_table "users", :force => true do |t| t.string "email" t.date "birthday" t.string "gender" t.string "zipcode" t.datetime "created_at" t.datetime "updated_at" t.string "crypted_password" t.string "password_salt" t.string "persistence_token" t.string "mondaysub", :default => "f", :null => false t.string "tuesdaysub", :default => "f", :null => false t.string "wednesdaysub", :default => "f", :null => false t.string "thursdaysub", :default => "f", :null => false t.string "fridaysub", :default => "f", :null => false t.string "saturdaysub", :default => "f", :null => false t.string "sundaysub", :default => "f", :null => false end Error: /var/lib/gems/1.8/gems/rails-2.3.5/lib/commands/runner.rb:48: undefined method `name' for #<User:0xb6e8ae48> (NoMethodError) from /home/tnederlof/Dropbox/Ruby/daily_trailer/app/models/user_mailer.rb:5:in `mail_out' from /home/tnederlof/Dropbox/Ruby/daily_trailer/app/models/user_mailer.rb:4:in `each' from /home/tnederlof/Dropbox/Ruby/daily_trailer/app/models/user_mailer.rb:4:in `mail_out' from /home/tnederlof/.gem/ruby/1.8/gems/actionmailer-2.3.5/lib/action_mailer/base.rb:459:in `__send__' from /home/tnederlof/.gem/ruby/1.8/gems/actionmailer-2.3.5/lib/action_mailer/base.rb:459:in `create!' from /home/tnederlof/.gem/ruby/1.8/gems/actionmailer-2.3.5/lib/action_mailer/base.rb:452:in `initialize' from /home/tnederlof/.gem/ruby/1.8/gems/actionmailer-2.3.5/lib/action_mailer/base.rb:395:in `new' from /home/tnederlof/.gem/ruby/1.8/gems/actionmailer-2.3.5/lib/action_mailer/base.rb:395:in `method_missing' from /home/tnederlof/Dropbox/Ruby/daily_trailer/app/models/user.rb:13:in `mail_out' from (eval):1 from /usr/lib/ruby/1.8/rubygems/custom_require.rb:31:in `eval' from /var/lib/gems/1.8/gems/rails-2.3.5/lib/commands/runner.rb:48 from /usr/lib/ruby/1.8/rubygems/custom_require.rb:31:in `gem_original_require' from /usr/lib/ruby/1.8/rubygems/custom_require.rb:31:in `require' from script/runner:3

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