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• Using git pull to track a remote branch without merging

  - by J Barlow

  I am using git to track content which is changed by some people and shared "read-only" with others. The "readers" may from time to time need to make a change, but mostly they will not. I want to allow for the git "writers" to rebase pushed branches** if need be, and ensure that the "readers" never accidentally get a merge. That's normally easy enough. git pull origin +master There's one case that seems to cause problems. If a reader makes a local change, the command above will merge. I want pull to be fully automatic if the reader has not made local changes, while if they have made local changes, it should stop and ask for input. I want to track any upstream changes while being careful about merging downstream changes. In a way, I don't really want to pull. I want to track the master branch exactly. ** (I know this is not a best practice, but it seems necessary in our case: we have one main branch that contains most of the work and some topic branches for specific customers with minor changes that need to be isolated. It seems easiest to frequently rebase to keep the topics up to date.)

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• Remove CKEdit Instance

  - by Laramie

  I have an issue creating multiple instances of CKEdit with different toolbars wherein the second instance created is replacing the toolbar of the first. Unfortunately I can only reproduce it in a huge page containing update panels, which I suspect is the issue. That said, the issue at this point is I can't seem to destroy instances of CKEdit per the documentation. Consider the following: <input name="txt1" type="text" id="txt1" /><br /> <a href="javascript:void(0);" onclick="create()">Create</a><br /> <a href="javascript:void(0);" onclick="destroy()">Destroy</a> <script type= "text/javascript" > <!-- function create() { var hEd = CKEDITOR.instances['txt1']; if (hEd) { CKEDITOR.remove(hEd); } hEd = CKEDITOR.replace('txt1'); } function destroy(){ var hEd = CKEDITOR.instances['txt1']; if (hEd) { CKEDITOR.remove(hEd); } } --> </script> When destroy() runs, CKEDITOR.remove(hEd); is being called. Multiple clicks to create() produce multiple instances of CKEditor on screen, but their instances no longer appear in CKEDITOR.instances. Am I missing something?

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• Calculate car filled up times

  - by Ivan

  Here is the question: The driving distance between Perth and Adelaide is 1996 miles. On the average, the fuel consumption of a 2.0 litre 4 cylinder car is 8 litres per 100 kilometres. The fuel tank capacity of such a car is 60 litres. Design and implement a JAVA program that prompts for the fuel consumption and fuel tank capacity of the aforementioned car. The program then displays the minimum number of times the car’s fuel tank has to be filled up to drive from Perth to Adelaide. Note that 62 miles is equal to 100 kilometres. What data will you use to test that your algorithm works correctly? Here is what I've done so far: import java.util.Scanner;// public class Ex4{ public static void main( String args[] ){ Scanner input = new Scanner( System.in ); double distance, consumption, capacity, time; distance = Math.sqrt(1996/62*100); consumption = Math.sqrt(8/100); capacity = 60; time = Math.sqrt(distance*consumption/capacity); System.out.println("The car's fuel tank need to be filled up:" + time + "times"); } } I can compile it but the problem is that the result is always 0.0, can anyone help me what's wrong with it ?

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• HTML button to NOT submit form

  - by arik-so

  Hello, I have a form. Outside that form, I have a button. A simple button, like this: <button>My Button</button> Nevertheless, when I click it, it submits the form. Here's the code: <form id="myform"> <input /> </form> <button>My Button</button> All this button should do is some JavaScript. But even when it looks just like in the code above, it submits the form. When I change the tag button to span, it works perfectly. But unfortunately, it needs to be a button. Is there any way to block that button from submitting the form? Like e. g. <button onclick="document.getElementById('myform').doNotSubmit();">My Button</button> Thanks in advance!

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• How to submit the form using JQuery UI?

  - by Vafello

  I have a form in html with a default submit button. After the form is submitted, a php file is run (with action = homelocation). I decided to use JQuery UI dialog to display the form. I have 2 default buttons there - one to save and one to close the dialog. Can anyone tell me how to assign the form submit button action to the JQuery dialog button(i.e. replace the submit button from the form with the one in the dialog)? Here's my code: <div id="userdialog" title="Add"> <form id="add" action="engine.php" method="POST"> <input type="hidden" name="action" value="homelocation" id="action"> <button type="submit">Save this location</button> </form></div> Dialog: $('#userdialog').dialog({ width: 260, position: [250,100], buttons: { "Save": function() { HERE GOES THE REQUIRED FUNCTION $(this).dialog('close'); }, "Don't Save": function() { $(this).dialog("close"); } } });

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• Good hash function for a 2d index

  - by rlbond

  I have a struct called Point. Point is pretty simple: struct Point { Row row; Column column; // some other code for addition and subtraction of points is there too } Row and Column are basically glorified ints, but I got sick of accidentally transposing the input arguments to functions and gave them each a wrapper class. Right now I use a set of points, but repeated lookups are really slowing things down. I want to switch to an unordered_set. So, I want to have an unordered_set of Points. Typically this set might contain, for example, every point on a 80x24 terminal = 1920 points. I need a good hash function. I just came up with the following: struct PointHash : public std::unary_function<Point, std::size_t> { result_type operator()(const argument_type& val) const { return val.row.value() * 1000 + val.col.value(); } }; However, I'm not sure that this is really a good hash function. I wanted something fast, since I need to do many lookups very quickly. Is there a better hash function I can use, or is this OK?

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• Flex (Lex, not actionscript or w/e) Error

  - by incrediman

  I'm totally new to flex. I'm getting a build error when using flex. That is, I've generated a .c file using flex, and, when running it, am getting this error: 1>lextest.obj : error LNK2001: unresolved external symbol "int __cdecl isatty(int)" (?isatty@@YAHH@Z) 1>C:\...\lextest.exe : fatal error LNK1120: 1 unresolved externals here is the lex file I'm using (grabbed from here): /*** Definition section ***/ %{ /* C code to be copied verbatim */ #include <stdio.h> %} /* This tells flex to read only one input file */ %option noyywrap %% /*** Rules section ***/ /* [0-9]+ matches a string of one or more digits */ [0-9]+ { /* yytext is a string containing the matched text. */ printf("Saw an integer: %s\n", yytext); } . { /* Ignore all other characters. */ } %% /*** C Code section ***/ int main(void) { /* Call the lexer, then quit. */ yylex(); return 0; } As well, why do I have to put a 'main' function in the lex syntax code? What I'd like is to be able to call yylex(); from another c file.

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• KendoUI Mobile switch and datasource

  - by OnaBai

  I'm trying to have a list of items displayed using a listview, something like: <div data-role="view" data-model="my_model"> <ul data-role="listview" data-bind="source: ds" data-template="list-tmpl"></ul> </div> Where I have a view using a model called my_model and a listview where the source is bound to ds. My model is something like: var my_model = kendo.observable({ ds: new kendo.data.DataSource({ transport: { read: readData, update: updateData, create: updateData, remove: updateData }, pageSize: 10, schema: { model: { id: "id", fields: { id: { type: "number" }, name: { type: "string" }, active: { type: "boolean" } } } } }) }); Each item includes an id, a name (that is a string) and a boolean named active. The template used to render each element is: <script id="list-tmpl" type="text/kendo-tmpl"> <span>#= name # : #= active #</span> <input data-role="switch" data-bind="checked: active"/> </script> Where I display the name and (for debugging) the value of active. In addition, I render a switch bound to active. You should see something like: The problems observed are: If you click on a switch you will see that the value of active next to the name changes its value (as expected) but if then, you pick another switch, the value (neither next to name nor in the DataSource) is not updated (despite the value of the switch is correctly updated). The update handler in the DataSource is never invoked (not even for the first chosen switch and despite the DataSource for that first toggled switch is updated). You can check it in JSFiddle: http://jsfiddle.net/OnaBai/K7wEC/ How do I make that the DataSource gets updated and update handler invoked?

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• Is there a programming toolkit for converting "any file type" to a TIFF image?

  - by Ryan

  Hello, I've written several variations of a program. The purpose of the program is to convert "any file type" to a TIFF image represenation of that file, as if it were being printed using a printer. I'm currently using a third party printer driver that I send files to, and it outputs a TIFF image. This is nice, but it requires me to use Office Interop files, and interact with each individual processing application in order to print the files. I had previously tried a toolkit, called Apose .NET, which did not rely on Office Interop, and did not require any printer driver. It did the conversion all on its own and would create a TIFF image. The problem with Aspose .NET was that it did not support a wide variety of input file types. Most notably, it can't do Visio files. My project calls for the ability to create a TIFF image for virtually "any file type". (excluding exes, music files, and stuff) I know that finding something that handles literally any file type is probably not a very feasible task, so I figure if it can at least handle all the Office file types, Adobe types, and other major standard file types, then I can write a custom extension parsing module that uses those processing applications to do the printing of any file type that can be viewed using those applications. So, does anyone know of a toolkit that can do this? Preferably one that does not rely on Office or a printer driver. It does not have to be free, or open source. Or, if you know of an amazing printer driver that does this, I'm open to that too. Thanks in advance, Ryan

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• going reverse in a for loop?

  - by sil3nt

  Hello there, Basically i got this for loop and i want the number inputed (eg. 123) to be printed out in reverse, so "321". so far it works fine and prints out the correct order when the for loop is for(i = 0; i<len ; i++) but i get an error when i try to print it in reverse?. Whats going wrong? #include <stdio.h> #include <string.h> void cnvrter(char *number); int main(){ char number[80]; printf("enter a number "); gets(number); cnvrter(number); return 0; } void cnvrter(char *number){ char tmp[80]; int i = 0,len = 0; int cnvrtd_digit = 0; len = strlen(number); printf("\nsize of input %d\n",len); for(i = len; i>len ; i--){ if ( ( number[i] >= '0' ) && ( number[i]<='9' ) ){ tmp[0] = number[i]; sscanf(tmp,"%d",&cnvrtd_digit); } printf("%d\n",cnvrtd_digit); } }

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• Convert Lambda from C# to VB.NET

  - by Iosu

  How would I translate this C# lambda expression into VB.NET ? query.ExecuteAsync(op => op.Results.ForEach(Employees.Add)); using System; using System.Net; using System.Windows; using System.Windows.Controls; using System.Windows.Documents; using System.Windows.Ink; using System.Windows.Input; using System.Windows.Media; using System.Windows.Media.Animation; using System.Windows.Shapes; using System.Collections.ObjectModel; using IdeaBlade.Core; using IdeaBlade.EntityModel; namespace SimpleSteps { public class MainPageViewModel { public MainPageViewModel() { Employees = new ObservableCollection(); var mgr = new NorthwindIBEntities(); var query = mgr.Employees; query.ExecuteAsync(op = op.Results.ForEach(Employees.Add)); } public ObservableCollection<Employee> Employees { get; private set; } } }

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• Time complexity with bit cost

  - by Keyser

  I think I might have completely misunderstood bit cost analysis. I'm trying to wrap my head around the concept of studying an algorithm's time complexity with respect to bit cost (instead of unit cost) and it seems to be impossible to find anything on the subject. Is this considered to be so trivial that no one ever needs to have it explained to them? Well I do. (Also, there doesn't even seem to be anything on wikipedia which is very unusual). Here's what I have so far: The bit cost of multiplication and division of two numbers with n bits is O(n^2) (in general?) So, for example: int number = 2; for(int i = 0; i < n; i++ ){ number = i*i; } has a time complexity with respect to bit cost of O(n^3), because it does n multiplications (right?) But in a regular scenario we want the time complexity with respect to the input. So, how does that scenario work? The number of bits in i could be considered a constant. Which would make the time complexity the same as with unit cost except with a bigger constant (and both would be linear). Also, I'm guessing addition and subtraction can be done in constant time, O(1). Couldn't find any info on it but it seems reasonable since it's one assembler operation.

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• zend_captcha always fails isValid()

  - by Grant Collins

  Hi, I've got an issue with Zend_Captcha always returning false when the page is submitted and the captcha's isValid() method is being called. It's driving my nuts because this as far as I am concerned should work. I start by declaring this at the top of the action function of the controller $captcha = new Zend_Captcha_Image('captcha', array( 'captcha' => array( 'name' => 'graduatesignupcaptcha', 'wordlen' => 6, 'font' => $this->config->captcha->font, 'imgDir' => $baseUrl.'/images/captcha/', 'imgUrl' => $this->config->webserver->name.'/images/captcha/', ) ) ); $captcha->setHeight(80) ->setTimeout(300); I do usual form validation and that all works, however it is when I come to validate that the value entered into form for the captcha it always returns false. //next we check the captcha text to ensure that the form is a person not a script $captchaText = $form->getElement('captchainput')->getValue(); $captchaId = $form->getElement('captchaid')->getValue(); //$captchaSession = new Zend_Session_Namespace('Zend_Form_Captcha_'.$captchaId); $captchaArray = array( 'id' => $captchaId, 'input' => $captchaText ); if(!$captcha->isValid($captchaArray)){ $log->log(implode(",",$captcha->getErrors()), Zend_Log::DEBUG); $form->getElement('captchainput')->setErrors(array('messages' => 'Bad security code')); $formFailed = true; } I've check to ensure that the id that I am getting and storing as a hidden element in my form match the image that is being generated but no matter what I do this always fails. Am I missing something simple here?? Or is there a better way of dealing with this?? Thanks,

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• android:digits Problem

  - by user244190

  I am using the following xml to limit input to digits only in an EditText widget. The android:digits attribute uses the below array resource. Everything works great except for the fact that I can't enter the number 4 even though its in the array. Any Ideas? <EditText android:id="@+id/mynumber" android:layout_width="wrap_content" android:layout_height="wrap_content" android:textSize="40dp" android:textStyle="bold" android:gravity="center_horizontal" android:layout_centerHorizontal="true" android:textColor="#aaffaa" android:numeric="integer" android:digits="@array/digits" android:background="#00000000" android:inputType="phone" android:focusable="true" android:singleLine="true" /> <string-array name="digits"> <item>0</item> <item>1</item> <item>2</item> <item>3</item> <item>4</item> <item>5</item> <item>6</item> <item>7</item> <item>8</item> <item>9</item> </string-array> Thanks

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• A problem with connected points and determining geometry figures based on points' location analysis

  - by StolePopov

  In school we have a really hard problem, and still no one from the students has solved it yet. Take a look at the picture below: http://d.imagehost.org/0422/mreza.gif That's a kind of a network of connected points, which doesn't end and each point has its own number representing it. Let say the numbers are like this: 1-23-456-78910-etc. etc.. (You can't see the number 5 or 8,9... on the picture but they are there and their position is obvious, the point in middle of 4 and 6 is 5 and so on). 1 is connected to 2 and 3, 2 is connected to 1,3,5 and 4 etc. The numbers 1-2-3 indicate they represent a triangle on the picture, but the numbers 1-4-6 do not because 4 is not directly connected with 6. Let's look at 2-3-4-5, that's a parallelogram (you know why), but 4-6-7-9 is NOT a parallelogram because the in this problem there's a rule which says all the sides must be equal for all the figures - triangles and parallelograms. Also there are hexagons, for ex. 4-5-7-9-13-12 is a hexagon - all sides must be equal here too. 12345 - that doesn't represent anything, so we ignore it. I think i explained the problem well. The actual problem which is given to us by using an input of numbers like above to determine if that's a triangle/parallelogram/hexagon(according to the described rules). For ex: 1 2 3 - triangle 11 13 24 26 -parallelogram 1 2 3 4 5 - nothing 11 23 13 25 - nothing 3 2 5 - triangle I was reading computational geometry in order to solve this, but i gave up quickly, nothing seems to help here. One friend told me this site so i decided to give it a try. If you have any ideas about how to solve this, please reply, you can use pseudo code or c++ whatever. Thank you very much.

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• ASP.NET validators alignment issue

  - by Mahesh

  Hi, I am developing contactus webpage which have a input field called Email. It is validated against a required field validator and regular expression validator with appropriate messages. Required: Enter Email Regular Expression: Invalid Email I am setting these two as given below: <asp:TextBox ID="txtEmail" runat="server"></asp:TextBox> <font color="#FF0000">*</font> <asp:RequiredFieldValidator ID="rfvemail" CssClass="error_text" ControlToValidate="txtEmail" runat="server" ErrorMessage="Enter email address."></asp:RequiredFieldValidator> <asp:RegularExpressionValidator ID="revemail" runat="server" ControlToValidate="txtEmail" ErrorMessage="Invalid Email" ValidationExpression="\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*"></asp:RegularExpressionValidator> My problem is both Enter Email and Invalid Email is occupying its own space. For Ex: If I leave email as empty space and press submit, Enter Email is displaying right next to it. If I enter invalid email(xxx), Enter Email is off but taking the space, Invalid Email message is displayed after these space taken by 'Enter Email' before. Is there any way to remove this space?? Mahesh

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• Practical Scheme Programming

  - by Ixmatus

  It's been a few months since I've touched Scheme and decided to implement a command line income partitioner using Scheme. My initial implementation used plain recursion over the continuation, but I figured a continuation would be more appropriate to this type of program. I would appreciate it if anyone (more skilled with Scheme than I) could take a look at this and suggest improvements. I'm that the multiple (display... lines is an ideal opportunity to use a macro as well (I just haven't gotten to macros yet). (define (ab-income) (call/cc (lambda (cc) (let ((out (display "Income: ")) (income (string->number (read-line)))) (cond ((<= income 600) (display (format "Please enter an amount greater than $600.00~n~n")) (cc (ab-income))) (else (let ((bills (* (/ 30 100) income)) (taxes (* (/ 20 100) income)) (savings (* (/ 10 100) income)) (checking (* (/ 40 100) income))) (display (format "~nDeduct for bills:---------------------- $~a~n" (real->decimal-string bills 2))) (display (format "Deduct for taxes:---------------------- $~a~n" (real->decimal-string taxes 2))) (display (format "Deduct for savings:-------------------- $~a~n" (real->decimal-string savings 2))) (display (format "Remainder for checking:---------------- $~a~n" (real->decimal-string checking 2)))))))))) Invoking (ab-income) asks for input and if anything below 600 is provided it (from my understanding) returns (ab-income) at the current-continuation. My first implementation (as I said earlier) used plain-jane recursion. It wasn't bad at all either but I figured every return call to (ab-income) if the value was below 600 kept expanding the function. (please correct me if that apprehension is incorrect!)

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• Drag and drop not working while using JQuery UI dialog

  - by user327854

  Hi Guys ! I m using jquery ui.core.js with version 1.7.2 and jquery-1.4.2.js . I got the issue saying "proto.plugins"(query ui.core.js for draggable module) is undefined ,hence i am not able to perform the drag option.My Code is given below. $("#linkfortag").click(function(){ var $dialog=$("<div id='testing'></div>").dialog({autoOpen:false}); $dialog.dialog("destroy"); $dialog.draggable(); alert("$dialog is" + $dialog.html()); $dialog.dialog('open'); $dialog.dialog({title:'Add Tag',resizable:true,closeOnEscape:true,modal:true,minWidth:250,buttons:{ 'Add Tag':function() { alert($(this).children().children().children(':input').attr('value')); var value=$("#addTag").attr('value'); var formobj=$(this).children(); validate_usertagform(value); } ,'Cancel': function() {$(this).dialog('close');}}}); $dialog.bind("dialogbeforeclose",function(event,ui){ alert("Dialog is gng to close"); alert("<<<<<<<<<<<<<<<<<UI IS>>>>>>>>>>>>>>>>>>>>>>" + ui); }); $dialog.bind("drag",function(event,ui){ alert("<<<<<<<<<<<<<<<<<drag is>>>>>>>>>>>>>" + event); }); $dialog.dialog( "option", "closeText", '' ); $dialog.dialog("option","draggable",true); }); Please help me on this........

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• My OpenCL kernel is slower on faster hardware.. But why?

  - by matdumsa

  Hi folks, As I was finishing coding my project for a multicore programming class I came up upon something really weird I wanted to discuss with you. We were asked to create any program that would show significant improvement in being programmed for a multi-core platform. I’ve decided to try and code something on the GPU to try out OpenCL. I’ve chosen the matrix convolution problem since I’m quite familiar with it (I’ve parallelized it before with open_mpi with great speedup for large images). So here it is, I select a large GIF file (2.5 MB) [2816X2112] and I run the sequential version (original code) and I get an average of 15.3 seconds. I then run the new OpenCL version I just wrote on my MBP integrated GeForce 9400M and I get timings of 1.26s in average.. So far so good, it’s a speedup of 12X!! But now I go in my energy saver panel to turn on the “Graphic Performance Mode” That mode turns off the GeForce 9400M and turns on the Geforce 9600M GT my system has. Apple says this card is twice as fast as the integrated one. Guess what, my timing using the kick-ass graphic card are 3.2 seconds in average… My 9600M GT seems to be more than two times slower than the 9400M.. For those of you that are OpenCL inclined, I copy all data to remote buffers before starting, so the actual computation doesn’t require roundtrip to main ram. Also, I let OpenCL determine the optimal local-worksize as I’ve read they’ve done a pretty good implementation at figuring that parameter out.. Anyone has a clue? edit: full source code with makefiles here http://www.mathieusavard.info/convolution.zip cd gimage make cd ../clconvolute make put a large input.gif in clconvolute and run it to see results

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• How to use jQuery .live() with ajax

  - by kylemac

  Currently I am using John Resig's LiveQuery plugin/function - http://ejohn.org/blog/jquery-livesearch/ - to allow users to sort through a long unordered-list of list-items. The code is as follows: $('input#q').liveUpdate('ul#teams').focus(); The issue arises when I use ajaxified tabs to sort the lists. Essentially I use ajax to pull in different lists and the liveUpdate() function doesn't have access to the new li's. I assume I would need to bind this using the .live() function - http://api.jquery.com/live/. But I am unclear how to bind this to an ajax event, I've only used the "click" event. How would I bind the new liveUpdate() to the newly loaded list-items? EDIT: The ajax tabs is run through the wordpress ajax api so the code is fairly complex, but simplified it is something like this: $('div.item-list-tabs').click( function(event) { var target = $(event.target).parent(); var data = {action, scope, pagination}; // Passes action to WP that loads my tab data $.post( ajaxurl, data, function(response) { $(target).fadeOut( 100, function() { $(this).html(response); $(this).fadeIn(100); }); }); return false; }); This is simplified for the sake of this conversation, but basically once the $.post loads the response in place .liveUpdate() doesn't have access to it. I believe the .live() function is the answer to this problem, I'm just unclear on how to implement it with the $.post()

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• Advice on coding Perl to work like PHP

  - by user272273

  I am first and foremost a perl coder, but like many, also code in PHP for client work, especially web apps. I am finding that I am duplicating a lot of my projects in the two languages, but using different paradigms (e.g. for handling cgi input and session data) or functions. What I would like to do is start to code my Perl in a way which is structured more like PHP, so that I a) am keeping one paradigm in my head b) can more quickly port over scripts from one to the other Specifically, I am asking if people could advise how you might do the following in perl? 1) Reproduce the functionality of $_SESSION, $_GET etc. e.g. by wrapping up the param() method of CGI.pm, a session library? 2) Templating library that is similar to PHP I am used to mixing my code and HTML in the PHP convention. e.g. i <h1>HTML Code here</h1> <? print "Hello World\b"; ?> Can anybody advise on which perl templating engine (and possibly configuration) will allow me to code similarly? 3) PHP function library Anybody know of a library for perl which reproduces a lot of the php inbuilt functions?

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• onsubmit() does not work.

  - by the Hampster

  Here is something that I find disturbing. I created a small form, and I'm using AJAX to validate for me. I have a javascript function authenticate() that works sometimes. <form method="post" action="" id="login_form" onsubmit="authenticate()";> // various inputs <input type="button" onclick="authenticate()" value="Log In"> </form> authenticate() works just fine when I click the button. However, if I press enter the form is submitted, and it fails. It also fails if I call onSubmit(). In my debugging, I alert the outgoing texts-- they are identical. However, the Prototype Ajax function calls it the onSuccess, but there is just no response from the server. (The server outputs either "Success" or "Failure"). Why the different behaviors for onClick() vs onSubmit()? The exact same function is called, but the results are different. Any help would be appreciated. --Dave

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• (solved) jQuery click and drag/scroll window: jagged movement

  - by Josh

  Edit: derp, using pageX/Y instead of clientX/Y -- apparently scrollBy expects input with that offset rather than the other. Jaggy movement gone. I am getting jagged movement when doing small scroll increments using the following bindings. Can anyone point me in the right direction for how to smooth this out? FYI, its intermittent. It seems like, if I click and hold for a second, then drag at a decent speed there are no problems. Edit: What the hell? I get this output on debug... obvious jog backwards and forwards. This will happen in succession and seems to have no correlation with the mouse, other than the mouse is moving. x 398 : 403 y 374 : 377 x 403 : 399 y 377 : 374 x 399 : 404 y 374 : 377 Josh sococo.client.panMap = function(e){ e.preventDefault(); var movex = sococo.client.currX - e.pageX ; var movey = sococo.client.currY - e.pageY; console.log( sococo.client.currX +" : " + e.pageX ); window.scrollBy(movex,movey); sococo.client.currY = e.pageY; sococo.client.currX = e.pageX; } $(document).mousedown( function(e){ e.preventDefault(); sococo.client.currX = e.pageX; sococo.client.currY = e.pageY; $(document).bind( "mousemove", sococo.client.panMap ); }); $(document).mouseup( function(e){ e.preventDefault(); $(document).unbind( "mousemove", sococo.client.panMap ); });

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• CharField values disappearing after save (readonly field)

  - by jamida

  I'm implementing simple "grade book" application where the teacher would be able to update the grades w/o being allowed to change the students' names (at least not on the update grade page). To do this I'm using one of the read-only tricks, the simplest one. The problem is that after the SUBMIT the view is re-displayed with 'blank' values for the students. I'd like the students' names to re-appear. Below is the simplest example that exhibits this problem. (This is poor DB design, I know, I've extracted just the relevant parts of the code to showcase the problem. In the real example, student is in its own table but the problem still exists there.) models.py class Grade1(models.Model): student = models.CharField(max_length=50, unique=True) finalGrade = models.CharField(max_length=3) class Grade1OForm(ModelForm): student = forms.CharField(max_length=50, required=False) def __init__(self, *args, **kwargs): super(Grade1OForm,self).__init__(*args, **kwargs) instance = getattr(self, 'instance', None) if instance and instance.id: self.fields['student'].widget.attrs['readonly'] = True self.fields['student'].widget.attrs['disabled'] = 'disabled' def clean_student(self): instance = getattr(self,'instance',None) if instance: return instance.student else: return self.cleaned_data.get('student',None) class Meta: model=Grade1 views.py from django.forms.models import modelformset_factory def modifyAllGrades1(request): gradeFormSetFactory = modelformset_factory(Grade1, form=Grade1OForm, extra=0) studentQueryset = Grade1.objects.all() if request.method=='POST': myGradeFormSet = gradeFormSetFactory(request.POST, queryset=studentQueryset) if myGradeFormSet.is_valid(): myGradeFormSet.save() info = "successfully modified" else: myGradeFormSet = gradeFormSetFactory(queryset=studentQueryset) return render_to_response('grades/modifyAllGrades.html',locals()) template <p>{{ info }}</p> <form method="POST" action=""> <table> {{ myGradeFormSet.management_form }} {% for myform in myGradeFormSet.forms %} {# myform.as_table #} <tr> {% for field in myform %} <td> {{ field }} {{ field.errors }} </td> {% endfor %} </tr> {% endfor %} </table> <input type="submit" value="Submit"> </form>

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• Asynchronous callback - gwt

  - by sprasad12

  Hi, I am using gwt and postgres for my project. On the front end i have few widgets whose data i am trying to save on to tables at the back-end when i click on "save project" button(this also takes the name for the created project). In the asynchronous callback part i am setting more than one table. But it is not sending the data properly. I am getting the following error: org.postgresql.util.PSQLException: ERROR: insert or update on table "entitytype" violates foreign key constraint "entitytype_pname_fkey" Detail: Key (pname)=(Project Name) is not present in table "project". But when i do the select statement on project table i can see that the project name is present. Here is how the callback part looks like: oksave.addClickHandler(new ClickHandler(){ @Override public void onClick(ClickEvent event) { if(erasync == null) erasync = GWT.create(EntityRelationService.class); AsyncCallback<Void> callback = new AsyncCallback<Void>(){ @Override public void onFailure(Throwable caught) { } @Override public void onSuccess(Void result){ } }; erasync.setProjects(projectname, callback); for(int i = 0; i < boundaryPanel.getWidgetCount(); i++){ top = new Integer(boundaryPanel.getWidget(i).getAbsoluteTop()).toString(); left = new Integer(boundaryPanel.getWidget(i).getAbsoluteLeft()).toString(); if(widgetTitle.startsWith("ATTR")){ type = "regular"; erasync.setEntityAttribute(name1, name, type, top, left, projectname, callback); } else{ erasync.setEntityType(name, top, left, projectname, callback); } } } Question: Is it wrong to set more than one in the asynchronous callback where all the other tables are dependent on a particular table? when i say setProjects in the above code isn't it first completed and then moved on to the next one? Please any input will be greatly appreciated. Thank you.

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