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• Referencing surrogate key

  - by Arman

  I have a table that has an autoincrement surrogate key. I want to use it as a foreign key of my other table. The thing is, I cant figure out how I can reference it to that table, because it is nearly impossible to determine what I have to reference(the actual value of the surrogate key). Please be noted that what I am trying to do is adding a tuple/record through my program(outside the dbms). The process is: Add a new record in Table1 and generate an autoincrement key. Update Add a new record in Table2 and reference its foreign key to the primary key of Table1. Update My question is : HOW do I store the foreign key if I didnt know what is it?

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• Is there something similar to 'rake routes' in django?

  - by The MYYN

  In rails, on can show the active routes with rake (http://guides.rubyonrails.org/routing.html): $ rake routes users GET /users {:controller=>"users", :action=>"index"} formatted_users GET /users.:format {:controller=>"users", :action=>"index"} POST /users {:controller=>"users", :action=>"create"} POST /users.:format {:controller=>"users", :action=>"create"} Is there a similar tool/command for django showing the e.g. the URL pattern, the name of the pattern (if any) and the associated function in the views?

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• should I use Navigator or View State ?

  - by Audrey

  Hi I want to create an application has this sort of function: http://looklet.com/create In this application when you click the button (or some tilelist) on the right the model on the left update accordingly. I wonder how they achieve this. Originally i think it's some sort of image-only pop-up window but then pop-up window seems to update the entire view. Then I think it might be only change view state, but then I still confused how it can be done using view state. Flex expert please give me some hint !

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• Authlogic Help! Registering a new user when currently logged-in as a user not working.

  - by looloobs

  Hi Just as a disclaimer I am new to rails and programming in general so apologize for misunderstanding something obvious. I have Authlogic with activation up and running. So for my site I would like my users who are logged in to be able to register other users. The new user would pick their login and password through the activation email, but the existing user needs to put them in by email, position and a couple other attributes. I want that to be done by the existing user. The problem I am running into, if I am logged in and then try and create a new user it just tries to update the existing user and doesn't create a new one. I am not sure if there is some way to fix this by having another session start??? If that is even right/possible I wouldn't know how to go about implementing it. I realize without knowing fully about my application it may be difficult to answer this, but does this even sound like the right way to go about this? Am I missing something here? Users Controller: class UsersController < ApplicationController before_filter :require_no_user, :only => [:new, :create] before_filter :require_user, :only => [:show, :edit, :update] def new @user = User.new end def create @user = User.new if @user.signup!(params) @user.deliver_activation_instructions! flash[:notice] = "Your account has been created. Please check your e-mail for your account activation instructions!" redirect_to profile_url else render :action => :new end end def show @user = @current_user end def edit @user = @current_user end def update @user = @current_user # makes our views "cleaner" and more consistent if @user.update_attributes(params[:user]) flash[:notice] = "Account updated!" redirect_to profile_url else render :action => :edit end end end My User_Session Controller: class UserSessionsController < ApplicationController before_filter :require_no_user, :only => [:new, :create] before_filter :require_user, :only => :destroy def new @user_session = UserSession.new end def create @user_session = UserSession.new(params[:user_session]) if @user_session.save flash[:notice] = "Login successful!" if @user_session.user.position == 'Battalion Commander' : redirect_to battalion_path(@user_session.user.battalion_id) else end else render :action => :new end end def destroy current_user_session.destroy flash[:notice] = "Logout successful!" redirect_back_or_default new_user_session_url end end

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• AIR SQLite IN expression not working

  - by goseta

  Hi, I'm having a problem with an expression in my sql statement in SQLite for Adobe AIR basically I have this sql = "UPDATE uniforms SET status=@status WHERE customerId IN(19,20)"; updateStmt.parameters["@status"] = args[1]; updateStmt.execute(); if I run the above code it works, updating the status when the id are 19 and 20 but if I pass the ids list as a parameter like this sql = "UPDATE uniforms SET status=@status WHERE customerId IN(@ids)"; updateStmt.parameters["@status"] = args[1]; updateStmt.parameters["@ids"] = "19,20"; updateStmt.execute(); it gives me and error, saying could not convert text value to numeric value, which make sense because I'm passing and string but the IN expression should convert it accordingly, like it does when I pass directly the list values, why is not working the other way, thanks for any help!

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• Override Django inlineformset_factory has_changed() to always return True

  - by John

  Hi, I am using the django inlineformset_factory function. a = get_object_or_404(ModelA, pk=id) FormSet = inlineformset_factory(ModelA, ModelB) if request.method == 'POST': metaform = FormSet (instance=a, data=request.POST) if metaform.is_valid(): f = metaform.save(commit=False) for instance in f: instance.updated_by = request.user instance.save() else: metaform = FormSet(instance=a) return render_to_response('nodes/form.html', {'form':metaform}) What is happening is that if I change any of the data then everything works ok and all the data gets updated. However if I don't change any of the data then the data is not updated. i.e. only entries which are changed go through the for loop to be saved. I guess this makes sense as there is no point saving data if it has not changed. However I need to go through and save every object in the form regardless of whether it has any changes on not. So my question is how do I override this so that it goes through and saves every record whether it has any changes or not? Hope this makes sense Thanks

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• Turn database result into array

  - by Industrial

  Hi everyone, I have just made the update/add/delete part for the "Closure table" way of organizing query hierarchical data that are shown on page 70 in this slideshare: http://www.slideshare.net/billkarwin/sql-antipatterns-strike-back My database looks like this: Table Categories: ID Name 1 Top value 2 Sub value1 Table CategoryTree: child parent 1 1 2 2 2 1 However, I have a bit of an issue getting the full tree back as an multidimensional array from a single query. Here's what I would like to get back: array ( 'topvalue' = array ( 'Subvalue', 'Subvalue2', 'Subvalue3' = array ('Subvalue 1', 'Subvalue 2', 'Subvalue 3' ) ); ); Update: Found this link, but I still have a hard time to convert it into an array: http://karwin.blogspot.com/2010/03/rendering-trees-with-closure-tables.html

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• asp.net submit form to new window

  - by Joo Park

  how do you open a new window and post form values to the new window in asp.net?

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• Codeigniter: simple form function

  - by Kevin Brown

  I'm stuck writing a simple form...I feel dumb. Here's my controller: function welcome_message(){ //Update welcome message $id = $this->session->userdata('id'); $profile['welcome_message'] = $this->input->post('welcome_message'); $this->db->update('be_user_profiles',$profile, array('user_id' => $id)); } And the html: <?php print form_open('home/welcome_message')?> <input type="checkbox" value="0" checked="false">Don't show me this again</input> <p> <input class="button submit" type="submit" class="close-box" value="Close" /> </p> <?php print form_close()?> Edit I simply need it to submit to a private function and return to the home page (page submitted from).

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• Know if a Visual Studio Website project is recompiling itself in the background?

  - by jdk

  A number of team members update a central ASP.NET dev site (Website project, not a Web application type). Some kinds of changes cause a recompile/rebuild in it. The large website takes a while to recompile and we've noticed it will still seemingly serve out dynamic pages before everything is internally updated. During the site's "gestation" period, our mileage varies while hitting it. Sometimes we get a correct page, sometimes an compilation error page that will eventually be served up without a compilation error, and at other times an unexpected hybrid. Is it possible to query an ASP.NET website application to see if it's currently compiling or rebuilding itself? If so I would write a status page that the team could reference when they're getting weird behaviour, so they would know to wait. Update: Our team often edit files manually on the dev server. For production we'd make pre-compiled pushes. The dev environment is a little more malleable and ever-changing so I'm looking for a solution to reducing the "confusion" there.

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• Problem overridding virtual function

  - by William

  Okay, I'm writing a game that has a vector of a pairent class (enemy) that s going to be filled with children classes (goomba, koopa, boss1) and I need to make it so when I call update it calls the childclasses respective update. I have managed to create a example of my problem. #include <stdio.h> class A{ public: virtual void print(){printf("Hello from A");} }; class B : public A{ public: void print(){printf("Hello from B");} }; int main(){ A ab = B(); ab.print(); while(true){} } Output wanted: "Hello from B" Output got: "Hello from A" How do I get it to call B's print function?

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• variable being weirdly deleted

  - by calccrypto

  im having a weird problem with one variable: its not being recognized but its still printing. i would post my code, but it is massive. the basic idea is: # pseudocode def function(stuff): <do stuff> # These are the only 2 conditions if tag == 3: pka = <a string> if tag == 4: pka = <a string> print pka # (1) print pka # (2) <do stuff not modifying pka> print pka # (3) if pka == 'RSA': <do stuff> elif pka == 'DSA': <do stuff> my code will error at (2). however, it will print out (1), (2), and (3), all of which are the same. is there any general explanation of why this is happening? if my code is really needed, i will post it, but otherwise, i would rather not due to its size update: now the code will error at the if statement after (3), saying UnboundLocalError: local variable 'pka' referenced before assignment even though (1),(2),(3) just printed

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• How is this inupt tag linking to another page?

  - by Matt

  Response.Write("<div><input type='submit' name='submit' value='Update Cart' /></div>") Response.Write("<div><input type='submit' name='submit' value='Shop More' /></div>") Response.Write("<div><input type='submit' name='submit' value='Checkout' /></div>") that is some example code from my teacher, but he hasn't answered my email in a couple days so I need some help. When you click the Update Cart button it just updates the cart page it's on, but when you click the Shop More button it links to Shop.aspx a different page, and the Checkout links to another page as well. I can't figure out how it is linking just from that code, anybody have any insights?

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• Silverlight 4 Multithread

  - by DavyMac23

  I'm trying to update my Silverlight 4 UI approx every 1/2 second with new data. I've hooked into a WCF service using net.tcp binding and issuing callbacks from the server. To make sure I get the data from the service as quickly as possible I've started up my proxy on a backround worker inside of my Silverlight App. My question is, how do I get the results from the callback and update the ObservableCollection that is bound to a datagird? I've tried a number of different ways and keep getting the dreaded cross-thread error.

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• frequent updates of a Tomcat application

  - by Erel Segal Halevi

  I have an application that runs on a Tomcat 7 server on a Windows machine. In its current stage, I have to frequently update and fix it. Whenever I need to update the application, I do all this: Build a new war file; Go to the Windows server, stop the Tomcat service; download the file, put it under webapps; Remove the old application folder under webapps; Remove the old application folder under work/Catalina/localhost (otherwise it keeps the old version cached). Restart the Tomcat service. I am sure there is a way to do all this automatically. What is it?

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• Rails: How do I run a before_save only if certain conditions are met?

  - by Shpigford

  I have a before_save method that I call that renames an uploaded image. before_save :randomize_file_name def randomize_file_name extension = File.extname(screen_file_name).downcase key = ActiveSupport::SecureRandom.hex(8) self.screen.instance_write(:file_name, "#{key}#{extension}") end That method is part of my Item model. That works great when I create a new item or need to update the image associated with an item...but the problem is that if I need to update an item but NOT the image, the randomize_file_name method still gets run and renames the file in the database (though not the file itself, obviously). So, I'm thinking I need to figure out a way to only run randomize_file_name if a file is included in the form submission...but I'm not sure how to pull that off.

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• Constant Push of SQL Server data to MySQL

  - by Brad

  Is there a way I can have a constant update of my SQL Server data going to a MySQL database?

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• JqueryUI serialize data not working on first record

  - by peace

  I am using jqueryUI v1.8. I have created a modal dialog form to edit records of a table. When the edit link on the record is clicked the record data is displayed on the form and the user edits the record. When the user submits this form the data is serialized and posted via ajax to update the database. This works well with all records except the first one. Nothing is posted to server for update only for the first record. alert(serializeddata); is empty. Similarly, The first form element in every record chosen for editing does not show the actual value the first time. Once you cancel editing and close the dialog and reopen you can see the fields accurate data. How do I resolve this?

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• Updating .class file in a jar throws exception

  - by CheesePls

  I'm trying to port a wikimedia plugin to run on OpenVMS and needed to alter a class. I'm trying to update the .class file in the jar using jar uf jar-file .class-file, however when I do this I get the following: java.util.zip.ZipException: duplicate entry: META-INF/LICENSE.txt at java.util.zip.ZipOutputStream.putNextEntry(ZipOutputStream.java:175) at java.util.jar.JarOutputStream.putNextEntry(JarOutputStream.java:90) at sun.tools.jar.Main.update(Main.java:507) at sun.tools.jar.Main.run(Main.java:184) It turns out there are 2 LICENSE.txt files in the jar and I can't seem to get rid of them. Any ideas on how to just get the new .class file into the jar or how to get rid of the duplicate file?

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• How to Tweet from multiple acounts with twitter Gem in Rails?

  - by Jmlevick

  I have an application wich has Oauth access using Twitter as provider. I also have the ability to ask the logged user permisson to Read and Write in his/her account and once a user authorized the app, I can send tweets as the user with something like: u = User.find(id) u.twitter.update("Some-Status-Here") in the rails console... What I want to do is to Tweet as all the users in one command, but if I try something like: u = User.all u.twitter.update("Some-Status-Here") I get this error: undefined method `twitter' for #<Array:0x00000002e2f188> How can I tweet as all the users in one command? What am I doing wrong? I feel it is a very basic thing I'm missing... Can someone help me? Thank You.

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• Python OpenGL Can't Redraw Scene

  - by RobbR

  I'm getting started with OpenGL and shaders using GLUT and PyOpenGL. I can draw a basic scene but for some reason I can't get it to update. E.g. any changes I make during idle(), display(), or reshape() are not reflected. Here are the methods: def display(self): glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT ) glMatrixMode(GL_MODELVIEW) glLoadIdentity() glUseProgram(self.shader_program) self.m_vbo.bind() glEnableClientState( GL_VERTEX_ARRAY ) glVertexPointerf(self.m_vbo) glDrawArrays(GL_TRIANGLES, 0, len(self.m_vbo)) glutSwapBuffers() glutReportErrors() def idle(self): test_change += .1 self.m_vbo = vbo.VBO( array([ [ test_change, 1, 0 ], # triangle [ -1,-1, 0 ], [ 1,-1, 0 ], [ 2,-1, 0 ], # square [ 4,-1, 0 ], [ 4, 1, 0 ], [ 2,-1, 0 ], [ 4, 1, 0 ], [ 2, 1, 0 ], ],'f') ) glutPostRedisplay() def begin(self): glutInit() glutInitWindowSize(400, 400) glutCreateWindow("Simple OpenGL") glutInitDisplayMode(GLUT_SINGLE | GLUT_RGB) glutDisplayFunc(self.display) glutReshapeFunc(self.reshape) glutMouseFunc(self.mouse) glutMotionFunc(self.motion) glutIdleFunc(self.idle) self.define_shaders() glutMainLoop() I'd like to implement a time step in idle() but even basic changes to the vertices or tranlastions and rotations on the MODELVIEW matrix don't display. It just puts up the initial state and does not update. Am I missing something?

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• send data to server without ajax

  - by PramodD

  Hi I want to send data to server in post method. I know it is simple question but I didn't get well document for this. I had method which sends data to server but it is using ajax. I want to send data without ajax how to do that? Here is my code. $.ajax({ type: "POST", contentType:"application/x-www-form-urlencoded; charset=UTF-8", url: clientDetailURL, data: finalclientDetailParam }).done(function( msg1 ) { var clientDetailResponse = msg1; console.log("Client detail response is:"+clientDetailResponse); });

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• JSON from jQuery to PHP

  - by enfix

  I need to pass a JSON object from $.post() jQuery function to PHP page. I tried this plugin jquery-json, but don't work: //include jquery.js and jquery.json.js $(document).ready(function(){ var data = new Object(); data.hello = "Hello"; data.world = "World"; var datajson = $.toJSON(data); $.post('file.php', {data: datajson}, function(res){ alert(res); }); }); And file.php has this simple line: <? var_dump(son_decode($_REQUEST['data'], true)); ?> What's the problem ?

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• Rails 3 remote resubmit form with dynamic fields

  - by montrealmike

  I have a form which has remote => true. When i submit it the first time everything works well. If there are any errors i want to add new fields to this form. I did this with update.js.erb. The problem is that when i resubmit this form, the result js file is rendered as html (ie i see the js file text on the screen). This is the same update.js.erb file that was rendered as js the first time... Any idea what i'm missing?

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• Changing Clickonce source folder

  - by henginy

  We copy our production build in a separate folder using post-build events, and replace the app.config file with our production app.config. However Clickonce reads the files in bin\Release folder. I have also tried copying all files from our custom build location to bin\Release folder in the post-build event, but app.config is still overridden (I guess clickonce re-builds the project into bin\Release). Is it possible to tell Clickonce to read from our custom folder? Or, if that's not the right way to go, how do you handle this kind of situation?

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