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  • django: how to use many-to-many relationships in values()?

    - by john
    i need to group results by a field that requires a few joins from the original model: // response_filter_args is created dynamically responses = Response.objects.filter(**response_filter_args) \ .values('customer__tags__tag') \ # django doesn't like this .annotate(average_score=Avg('rating__score')) Response - customer - tags (many-to-many field pointing to Tag) - tag (the tag as a string) Models are: class Response(models.Model): customer = models.ForeignKey(Customer) ... class Customer(models.Model): tags = models.ManyToManyField(Tag) ... class Tag(models.Model): tag = models.CharField(max_length=255) ... i'm trying to calculate average ratings. to make it work i need to tell django to group by 'tag', but it refuses to. it gives an error: Invalid field name: 'customer__tags__tag' anyone know how i can get it to group by tag? i've tried all the combinations of underscores in customer_tags_tag that i can think of, but nothing works.

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  • Can't push to git hub

    - by John
    I just completed chapter one of the Ruby on Rails Tutorial by Hartl. Posted about one minor hitch previously. Now I started chapter two. I swear I did everything by the book, but now when I try: git push -u origin master I get the following messages after entering my passphrase: ERROR: repository not found fatal: could not read from remote repository Please make sure you have the correct access rights and that the repository exists. When I down loaded heroku tools I think it installed a second version of ruby on my machine. In any case I now have two version listed under All Programs. Could this have screwed thing up? The two versions are Ruby 1.9.2-p290 and 1.9.3-p327. Also when I open the command prompt using 1.9.2 there is a wierd thing at the top before I do anything: 'C:\Program' is not recognized as an internal or external command, operable program or batch file. This is then followed by the normal prompt on the next line. I'm wondering if the use of my public keys have some how gotten screwed up. Any help would be appreciated.

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  • combining two png files in android

    - by John
    I have two png image files that I would like my android app to combine problematically into one png image file and am wondering if it is possible to do so? if so, what I would like to do is just overlay them on each other to create one file. the idea behind this is that I have a handful of png files, some with a portion of the image on the left with the rest transparent and the others with an image on the right and the rest transparent. and based on user input it will combine the two to make one file to display. (and i cant just display the two images side by side, they need to be one file) is this possible and how so?

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  • localhost remove HTML extension

    - by Cusa John
    I've been trying to clean up my urls with htaccess but I can't seen to get it to work on my localhost. My website url: localhost/index.html This is the default htaccess file that's in my www folder. #------------------------------------------------------------------------------ # To allow execution of cgi scripts in this directory uncomment next two lines. #------------------------------------------------------------------------------ AddType application/x-httpd-php .html .htm .php AddHandler cgi-script .pl .cgi Options +ExecCGI +FollowSymLinks

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  • Joining two mysql_fetch_arrays

    - by John Harbert
    I am trying to piece two queries together. Below is the code Im using. However the table is splitting up the data. How can I remedy this? Or what better solutions are there? while($row = mysql_fetch_array($result)) { echo "<tr id='centered' >"; echo "<td class='leftalign'>" . $row['Quarter_Name'] . "</td>"; echo "<td>" . $row['Quarterly_yield'] . "</td>"; echo "<td>" . $row['Quarterly_yield'] . "</td>"; echo "<td>" . $row['Quarterly_yield'] . "</td>"; } while($row = mysql_fetch_array($result8)) { echo "<td>" . $row['Quarterly_yield'] . "</td>"; }

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  • [MSVC++] Breakpoints on a variable changing value?

    - by John
    I'm chasing a bug where a member value of an object seems to magically change, without any methods being called which modify it. No doubt something obvious but proving hard to track down. I know I can put conditional break-points in methods based on the variable value, but is it in any way possible to actually put a breakpoint on a variable itself? e.g a breakpoint which fires when x==4? I know I can put watches on, what about breakpoints?

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  • How to use __LINE__ in a string

    - by John
    Just using it as a method parameter is fine but what about an easy way to use it in strings? For instance say I have this: 11 void myTest() 12 { 13 if(!testCondition) 14 logError("testcondition failed"); 15 } And I want the output to be: "myTest line 14: testcondition failed" How can I write logError? Does it have to be some monstrosity of a macro?

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  • How does this code block works?

    - by Justin John
    I can't understand how the following code works. $start = 1; while($start<10){ if ($start&1) { echo "ODD ".$start." <br/> "; } else { echo "EVEN ".$start." <br/> "; } $start++; } The $start&1 will return ODD and EVEN seperately. Output ODD 1 EVEN 2 ODD 3 EVEN 4 ODD 5 EVEN 6 ODD 7 EVEN 8 ODD 9 If we give $start&2 instead of $start&1, it returns with another order. How &1 &2 etc... works here?

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  • CSS - How to align 2 fields into 1 row?

    - by user1809157
    I'm newbie in css. My jsfiddle here http://jsfiddle.net/PAHdH/ <div> <label>Name: </label><p>John</p> <label>Age: </label><p>35</p> <label>Level: </label><p>60</p> <label>Score: </label><p>5000</p> </div> label{ display: inline-block; float: left; clear: left; width: 150px; text-align: left; color:black; } p {margin-bottom:2px; padding:0;} ? I would like to change to Name: John Age: 35 Level: 60 Score: 5000 It should be like a table with 4 columns.

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  • iframe reaches bottom of page

    - by John
    Is there a way to make the height of the <iframe> reach exactly the bottom of the page? It is hard to judge by using height:xx%, and it might be dependent on browser. The code is below: <!DOCTYPE html> <html> <body style="margin:0"> <p style="margin:10px"> hello </p> <iframe src="http://www.weather.com" style="width:100%; height:95%"></iframe> </body> </html>

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  • A global login (many sites)

    - by John
    We are a growing network but we figured we want to keep that the User only would need one account in order to access the network different sites. (Similar to Stackoverflow's login, If you login in to another "site" you use your account credentials and than your account is created). We want our own login system (Username, password) and not OpenId, as we'd probably have that in the future, but the main focus right now is the global login. How can I do this? Do a Curl request and send back a cookie? Have a "database" just for the login procedure and on first login also create a new "User" in the site specified database? Suggestions?.

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  • What's the proper size of Default png's for iPad?

    - by David John
    I am confused by conflicting information. Most commonly I see these being the sizes quoted for the various Default images: Launch image Portrait Default-Portrait.png 768 x 1004 Launch image Portrait [email protected] 1536 x 2008 Launch image Landscape [email protected] 2048 x 1496 Launch image Landscape Default-Landscape.png 1024 x 748 Seemed like slightly unusual sizes, but I went along with it and dragged the images into the Launch images section in XCode. XCode however promptly puts little yellow triangles over these images and tell me that the sizes should be: 768x1024, 1536x2048, 1024x768 and 2048x1536 Oh and one last important bit. Do I really need to have all these images for submission to the app store? It's really not clear which images are required and which are just recommended. Mine is a Universal app btw if that makes any difference.

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  • If you knew then what you know now, what language(s) will you start learning first?

    - by John
    I will probably start with C and then Lisp. Although I started programming in C, I did not program in it as much as I want. It's fun working with the low level stuff. Learning C helped me a lot when I started working. I've only started learning Lisp now and I found it amazing that the concepts it supported from the very start are still very relevant today. Well I think it's better late than never.

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  • Using traversal by pointer to check whether a string is repeated

    - by Bob John
    bool repeat_char(char *s, int n); //R: s is a C-string of at least n non-NUL characters and n > 0 //E: returns true if the first n characters are fully repeated throughout the string s, false // otherwise. I'm having trouble implementing this function using traversal by pointer. I was thinking that I could extract the first n characters from s, then use that in a comparison with s, but I'm not sure how I could do that. If I'm traversing through s one character at a time, how can I check that it matches a block of text, such as the first n characters of s? Thanks!

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  • switch vs. if...else if...else

    - by John Hartsock
    Guys I have a couple of questions: Is there a preformance difference in Javascript between a switch statement and an if...else if....else? If so why? Is the behavior of switch and if...else if...else different across browsers? (FireFox, IE, Chrome, Opera, Safari) The reason for asking this question is it seems that I get better preformance on a switch statement with approx 100 cases in Firefox. But in IE it get better preformance with 100 if...else if...else.

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  • Convert list of dicts to string

    - by John
    I'm very new to Python, so forgive me if this is easier than it seems to me. I'm being presented with a list of dicts as follows: [{'directMember': 'true', 'memberType': 'User', 'memberId': '[email protected]'}, {'directMember': 'true', 'memberType': 'User', 'memberId': '[email protected]'}, {'directMember': 'true', 'memberType': 'User', 'memberId': '[email protected]'}] I would like to generate a simple string of memberIds, such as [email protected], [email protected], [email protected] but every method of converting a list to a string that I have tried fails because dicts are involved. Any advice?

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