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  • Build error with variables and url_for in Flask

    - by Rob
    Have found one or two people on the interwebs with similar problems, but haven't seen a solution posted anywhere. I'm getting a build error from the code/template below, but can't figure out where the issue is or why it's occurring. It appears that the template isn't recognizing the function, but don't know why this would be occurring. Any help would be greatly appreciated - have been pounding my against the keyboard for two nights now. Function: @app.route('/viewproj/<proj>', methods=['GET','POST']) def viewproj(proj): ... Template Excerpt: {% for project in projects %} <li> <a href="{{ url_for('viewproj', proj=project.project_name) }}"> {{project.project_name}}</a></li> {% else %} No projects {% endfor %} Error log: https://gist.github.com/1684250 EDIT: Also wanted to include that it's not recognizing the variable "proj" when building the URL, so it's just appending the value as a parameter. Here's an example: //myproject/viewproj?projname=what+up Last few lines: [Wed Jan 25 09:47:34 2012] [error] [client 199.58.143.128] File "/srv/www/myproject.com/myproject/templates/layout.html", line 103, in top-level template code, referer: xx://myproject.com/ [Wed Jan 25 09:47:34 2012] [error] [client 199.58.143.128] {% block body %}{% endblock %}, referer: xx://myproject.com/ [Wed Jan 25 09:47:34 2012] [error] [client 199.58.143.128] File "/srv/www/myproject.com/myproject/templates/main.html", line 34, in block "body", referer: xx://myproject.com/ [Wed Jan 25 09:47:34 2012] [error] [client 199.58.143.128] , referer: xx://myproject.com/ [Wed Jan 25 09:47:34 2012] [error] [client 199.58.143.128] File "/usr/lib/python2.7/dist-packages/flask/helpers.py", line 195, in url_for, referer: xx://myproject.com/ [Wed Jan 25 09:47:34 2012] [error] [client 199.58.143.128] return ctx.url_adapter.build(endpoint, values, force_external=external), referer: xx://myproject.com/ [Wed Jan 25 09:47:34 2012] [error] [client 199.58.143.128] File "/usr/lib/pymodules/python2.7/werkzeug/routing.py", line 1409, in build, referer: xx://myproject.com/ [Wed Jan 25 09:47:34 2012] [error] [client 199.58.143.128] raise BuildError(endpoint, values, method), referer: xx://myproject.com/ [Wed Jan 25 09:47:34 2012] [error] [client 199.58.143.128] BuildError: ('viewproj', {'proj': '12th'}, None), referer: xx://myproject.com/

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  • Mootools - how to destroy a class instance

    - by Rob
    What I'm trying to do is create a class that I can quickly attach to links, that will fetch and display a thumbnail preview of the document being linked to. Now, I am focusing on ease of use and portability here, I want to simply add a mouseover event to links like this: <a href="some-document.pdf" onmouseover="new TestClass(this)">Testing</a> I realize there are other ways I can go about this that would solve my issue here, and I may end up having to do that, but right now my goal is to implement this as above. I don't want to manually add a mouseout event to each link, and I don't want code anywhere other than within the class (and the mouseover event creating the class instance). The code: TestClass = new Class({ initialize: function(anchor) { this.anchor = $(anchor); if(!this.anchor) return; if(!window.zzz) window.zzz = 0; this.id = ++window.zzz; this.anchor.addEvent('mouseout', function() { // i need to get a reference to this function this.hide(); }.bind(this)); this.show(); }, show: function() { // TODO: cool web 2.0 stuff here! }, hide: function() { alert(this.id); //this.removeEvent('mouseout', ?); // need reference to the function to remove /*** this works, but what if there are unrelated mouseout events? and the class instance still exists! ***/ //this.anchor.removeEvents('mouseout'); //delete(this); // does not work ! //this = null; // invalid assignment! //this = undefined; // invalid assignment! } }); What currently happens with the above code: 1st time out: alerts 1 2nd time out: alerts 1, 2 3rd time out: alerts 1, 2, 3 etc Desired behavior: 1st time out: alerts 1 2nd time out: alerts 2 3rd time out: alerts 3 etc The problem is, each time I mouse over the link, I'm creating a new class instance and appending a new mouseout event for that instance. The class instance also remains in memory indefinitely. On mouseout I need to remove the mouseout event and destroy the class instance, so on subsequent mouseovers we are starting fresh.

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  • Has there been a Firefox update recently?

    - by Rob Nicholson
    Trying again to ask a PROGRAMMING question because of the over-zealous closing off of what is equally a programming question before allowing the poster to clarify. The latest version of Firefox (v3.6.3) is breaking websites, mine included. I make heavy use of the Infragistic NetAdvantage controls. These, because of their heavy JavaScript reliance and occasional lack of quality control, tend to suffer through browser updates sometimes requiring a hotfix. So the question is... has there been a Firefox release recently that has either introduced a bug, tightening up of some standard, bug fix which might have broken a previous workaround (often the case) etc? I'm guessing around JavaScript but that's a guess hence the reason for asking a group of programmers...

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  • touchesBegan / Ended incorrectly identifying second, third, etc. touch

    - by Rob
    I have an issue where touchesBegan and touchesEnded are incorrectly identifying my second, third, etc touch if I continue to hold down my first touch. If I lift my finger up off the first touch, then it will recognize the next touch just fine. It's only when I hold my first touch down continuously and then try and touch a different area with a different finger at the same time. It will then incorrectly register that second touch as being from the first touch again. Any insights into how I can fix this? - (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event { UITouch* touch = [touches anyObject]; NSString* filename = [listOfStuff objectAtIndex:[touch view].tag]; // do something with the filename now } - (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event { ITouch* touch = [touches anyObject]; NSString* buttonPressed = [listOfStuff objectAtIndex:[touch view].tag]; // do something with this info now }

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  • Fulltext search on many tables

    - by Rob
    I have three tables, all of which have a column with a fulltext index. The user will enter search terms into a single text box, and then all three tables will be searched. This is better explained with an example: documents doc_id name FULLTEXT table2 id doc_id a_field FULLTEXT table3 id doc_id another_field FULLTEXT (I realise this looks stupid but that's because I've removed all the other fields and tables to simplify it). So basically I want to do a fulltext search on name, a_field and another_field, and then show the results as a list of documents, preferably with what caused that document to be found, e.g. if another_field matched, I would display what another_field is. I began working on a system whereby three fulltext search queries are performed and the results inserted into a table with a structure like: search_results table_name row_id score (This could later be made to cache results for a few days with e.g. a hash of the search terms). This idea has two problems. The first is that the same document can be in the search results up to three times with different scores. Instead of that, if the search term is matched in two tables, it should have one result, but a higher score. The second is that parsing the results is difficult. I want to display a list of documents, but I don't immediately know the doc_id without a join of some kind; however the table to join to is dependant on the table_name column, and I'm not sure how to accomplish that. Wanting to search multiple related tables like this must be a common thing, so I guess what I'm asking is am I approaching this in the right way? Can someone tell me the best way of doing it please.

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  • How to disable multiple touches on a ScrollView and UIImage

    - by Rob
    I have a scrollview that I am loading images into that the user can touch and play a sound. However, the program is getting confused when I press one image with one finger and then another one with a different finger. It thinks you are pushing the same button again and therefore plays the sound again (so you have two of the same sounds playing at the same time even though you may have pressed a different sound button). I tried setting exclusiveTouch for each UIImage but that didn't seem to work in this case for some reason. What am I missing or is there a better way to do this? Here is some code: for creating buttons.... - (void) createButtons { CGRect myFrame = [self.outletScrollView bounds]; CGFloat gapX, gapY, x, y; int columns = 3; int myIndex = 0; int viewWidth = myFrame.size.width; int buttonsCount = [g_AppsList count]; float actualRows = (float) buttonsCount / columns; int rows = buttonsCount / columns; int buttonWidth = 100; int buttonHeight = 100; if (actualRows > rows) rows++; //set scrollview content size to hold all the glitter icons library gapX = (viewWidth - columns * buttonWidth) / (columns + 1); gapY = gapX; y = gapY; int contentHeight = (rows * (buttonHeight + gapY)) + gapY; [outletScrollView setContentSize: CGSizeMake(viewWidth, contentHeight)]; UIImage* myImage; NSString* buttonName; //center all buttons to view int i = 1, j = 1; for (i; i <= rows; i++) { //calculate gap between buttons gapX = (viewWidth - (buttonWidth * columns)) / (columns + 1); if (i == rows) { //this is the last row, recalculate gap and pitch gapX = (viewWidth - (buttonWidth * buttonsCount)) / (buttonsCount + 1); columns = buttonsCount; }//end else x = gapX; j = 1; for (j; j <= columns; j++) { //get shape name buttonName = [g_AppsList objectAtIndex: myIndex]; buttonName = [NSString stringWithFormat: @"%@.png", buttonName]; myImage = [UIImage imageNamed: buttonName]; TapDetectingImageView* imageView = [[TapDetectingImageView alloc] initWithImage: myImage]; [imageView setFrame: CGRectMake(x, y, buttonWidth, buttonHeight)]; [imageView setTag: myIndex]; [imageView setContentMode:UIViewContentModeScaleToFill]; [imageView setUserInteractionEnabled: YES]; [imageView setMultipleTouchEnabled: NO]; [imageView setExclusiveTouch: YES]; [imageView setDelegate: self]; //add button to current view [outletScrollView addSubview: imageView]; [imageView release]; x = x + buttonWidth + gapX; //increase button index myIndex++; }//end for j //increase y y = y + buttonHeight + gapY; //decrease buttons count buttonsCount = buttonsCount - columns; }//end for i } and for playing the sounds... - (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event { //stop playing theAudio.stop; // cancel any pending handleSingleTap messages [NSObject cancelPreviousPerformRequestsWithTarget:self selector:@selector(handleSingleTap) object:nil]; UITouch* touch = [[event allTouches] anyObject]; NSString* filename = [g_AppsList objectAtIndex: [touch view].tag]; NSString *path = [[NSBundle mainBundle] pathForResource: filename ofType:@"m4a"]; theAudio=[[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL fileURLWithPath:path] error:NULL]; theAudio.delegate = self; [theAudio prepareToPlay]; [theAudio setNumberOfLoops:-1]; [theAudio setVolume: g_Volume]; [theAudio play]; } - (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event { BOOL allTouchesEnded = ([touches count] == [[event touchesForView:self] count]); if (allTouchesEnded) { //stop playing theAudio.stop; }//end if //stop playing theAudio.stop; }

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  • WCF communication using Channel Factory.

    - by Rob Ferno
    How do I get 2 WCF services to communicate with each other using a Channel Factory in C#? Can someone point me in the right direction. Saw a few examples but was confused how the communication really happens and what code needs to be written to support this.

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  • What's the easiest way to parse numbers in clojure?

    - by Rob Lachlan
    I've been using java to parse numbers, e.g. (. Integer parseInt numberString) Is there a more clojuriffic way that would handle both integers and floats, and return clojure numbers? I'm not especially worried about performance here, I just want to process a bunch of white space delimited numbers in a file and do something with them, in the most straightforward way possible. So a file might have lines like: 5 10 0.0002 4 12 0.003 And I'd like to be able to transform the lines into vectors of numbers.

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  • When and how should independent hierarchies be used in clojure?

    - by Rob Lachlan
    Clojure's system for creating an ad hoc hierarchy of keywords is familiar to most people who have spent a bit of time with the language. For example, most demos and presentations of the language include examples such as (derive ::child ::parent) and they go on to show how this can be used for multi-method dispatch. In all of the slides and presentations that I've seen, they use the global hierarchy. But it is possible to put keyword relationships in independent hierarchies, by using (derive h ::child ::parent), where h is created by (make-hierarchy). Some questions, therefore: Are there any guidelines on when this is useful or necessary? Are there any functions for manipulating hierarchies? Merging is particularly useful, so I do this: (defn merge-h [& hierarchies] (apply merge-with (cons #(merge-with clojure.set/union %1 %2) hierarchies)) But I was wondering if such functions already exist somewhere. EDIT: Changed "custom" hierarchy to "independent" hierarchy, since that term better describes this animal. Also, I've done some research and included my own answer below. Further comments are welcome.

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  • LINQ - array property contains element from another array

    - by Rob
    I have a object (product), with a property of type 'array' e.g. product.tags = {"tag1","tag2","tag9"} I have an array of input tags to filter on. ... but this is not quite working: List<string> filterTags = new List<string>() { "tag1", "tag3" }; var matches = from p in products where p.Tags.Contains(filterTags) select p; Any recommendations? Thanks.

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  • How can I get Firefox to update background-color on a:hover *before* a javascript routine is run?

    - by Rob
    I'm having a Firefox-specific issue with a script I wrote to create 3d layouts. The correct behavior is that the script pulls the background-color from an element and then uses that color to draw on the canvas. When a user mouses over a link and the background-color changes to the :hover rule, the color being drawn changes on the canvas changes as well. When the user mouses out, the color should revert back to non-hover color. This works as expected in Webkit browsers and Opera, but it seems like Firefox doesn't update the background-color in CSS immediately after a mouseout event occurs, so the current background-color doesn't get drawn if a mouseout occurs and it isn't followed up by another event that calls the draw() routine. It works just fine in Opera, Chrome, and Safari. How can I get Firefox to cooperate? I'm including the code that I believe is most relevant to my problem. Any advice on how I fix this problem and get a consistent effect would be very helpful. function drawFace(coord, mid, popColor,gs,x1,x2,side) { /*Gradients in our case run either up/down or left right. We have two algorithms depending on whether or not it's a sideways facing piece. Rather than parse the "rgb(r,g,b)" string(popColor) retrieved from elsewhere, it is simply offset with the gs variable to give the illusion that it starts at a darker color.*/ var canvas = document.getElementById('depth'); //This is for excanvas.js var G_vmlCanvasManager; if (G_vmlCanvasManager != undefined) { // ie IE G_vmlCanvasManager.initElement(canvas); } //Init canvas if (canvas.getContext) { var ctx = canvas.getContext('2d'); if (side) var lineargradient=ctx.createLinearGradient(coord[x1][0]+gs,mid[1],mid[0],mid[1]); else var lineargradient=ctx.createLinearGradient(coord[0][0],coord[2][1]+gs,coord[0][0],mid[1]); lineargradient.addColorStop(0,popColor); lineargradient.addColorStop(1,'black'); ctx.fillStyle=lineargradient; ctx.beginPath(); //Draw from one corner to the midpoint, then to the other corner, //and apply a stroke and a fill. ctx.moveTo(coord[x1][0],coord[x1][1]); ctx.lineTo(mid[0],mid[1]); ctx.lineTo(coord[x2][0],coord[x2][1]); ctx.stroke(); ctx.fill(); } } function draw(e) { var arr = new Array() var i = 0; var mid = new Array(2); $(".pop").each(function() { mid[0]=Math.round($(document).width()/2); mid[1]=Math.round($(document).height()/2); arr[arr.length++]=new getElemProperties(this,mid); i++; }); arr.sort(sortByDistance); clearCanvas(); for (a=0;a<i;a++) { /*In the following conditional statements, we're testing to see which direction faces should be drawn, based on a 1-point perspective drawn from the midpoint. In the first statement, we're testing to see if the lower-left hand corner coord[3] is higher on the screen than the midpoint. If so, we set it's gradient starting position to start at a point in space 60pixels higher(-60) than the actual side, and we also declare which corners make up our face, in this case the lower two corners, coord[3], and coord[2].*/ if (arr[a].bottomFace) drawFace(arr[a].coord,mid,arr[a].popColor,-60,3,2); if (arr[a].topFace) drawFace(arr[a].coord,mid,arr[a].popColor,60,0,1); if (arr[a].leftFace) drawFace(arr[a].coord,mid,arr[a].popColor,60,0,3,true); if (arr[a].rightFace) drawFace(arr[a].coord,mid,arr[a].popColor,-60,1,2,true); } } $("a.pop").bind("mouseenter mouseleave focusin focusout",draw); If you need to see the effect in action, or if you want the full javascript code, you can check it out here: http://www.robnixondesigns.com/strangematter/

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  • Trapping errors in TClientDataSet.CommandText

    - by Rob McDonell
    I have a TClientDataSet connected to a TDataSetProvider, which in turn is connected to a TAdsTable. I set the SQL command and then open the ClientDataset something like this: try CDS.CommandText := 'SELECT * FROM tablename WHERE fieldname = 1'; CDS.Open except // trap exception here - this never gets executed! end; If the SQL statement in CommandText fails, however (syntax error or whatever) I get an exception within the Advantage code, but it never gets caught in my own exception handling code. Is there any way for me to trap this error and report it nicely to the user. Alternatively is there a way to verify the syntax of an SQL query before executing it? I'm using Delphi Pro 2009, and Advantage Local Server 9.

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  • Can I make clojure macro that will allow me to get a list of all functions created by the macro?

    - by Rob Lachlan
    I would like to have a macro which I'll call def-foo. Def-foo will create a function, and then will add this function to a set. So I could call (def-foo bar ...) (def-foo baz ...) And then there would be some set, e.g. all-foos, which I could call: all-foos => #{bar, baz} Essentially, I'm just trying to avoid repeating myself. I could of course define the functions in the normal way, (defn bar ...) and then write the set manually. A better alternative, and simpler than the macro idea, would be to do: (def foos #{(defn bar ...) (defn baz ...)} ) But I'm still curious as to whether there is a good way for the macro idea to work.

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  • Do you have any tips for comments code to keep them in step with the code?

    - by Rob Wells
    G'day, I've read both of Steve McConnell's excellent Code Complete books "Code Complete" and "Code Complete 2" and was wondering if people have any other suggestions for commenting code. My commenting mantra could be summed up by the basic idea of expressing "what the code below cannot say". While enjoying this interesting blog post by Jeff about commenting I was still left wondering "When coding, when do you feel a comment is required?" Edit: Oops. Seems to be a duplicate of this question http://stackoverflow.com/questions/121945/how-do-you-like-your-comments so sorry for the noise. Thanks to my, seemingly, SO shadow for pointing it out - wouldn't have thought I was that interesting. Now off to read the original post and see if it is relevant. Edit: I meant to emphasise the best appraoch to ensure that your comments will stay in step with the code. Maybe expressing an intent rather than the mechansim for instance.

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  • Add attribute to embed tag using jquery

    - by Rob
    I have the following embed tag: <embed type="application/x-shockwave-flash" width="640" height="505" src="url_to_video" allowscriptaccess="always" allowfullscreen="true"></embed> I have about five of theses on a page, and I'd like to add the attribute wmode="opaque" to all of them. However, I tried to do it like this and it didnt' work: $j("embed").attr('wmode','opaque'); Is there another way I can dynamically set the attribute wmode="opaque" ? Thanks!

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  • iPhone Advanced table view cells example

    - by Rob
    I have been going through and re-creating Apple's "Advanced Table View Cells" example to better understand everything. I have done everything, but somehow missed one detail and I can't figure it out. If you launch their example (http://developer.apple.com/iphone/library/samplecode/AdvancedTableViewCells/Introduction/Intro.html) and open up the RootViewController.xib file, they have a "tableView" outlet on the inspector that is linked to File's Owner. For whatever reason, I can't get that to show up on my version. My code is almost verbatim of Apple's, so what am I missing? Did I not declare that somewhere or doesn't that get taken from the RootViewController.m file?

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  • Is it possible to restore a previous GL framebuffer?

    - by Rob
    Hi there, I'm working on an iPhone app that lets the user draw using GL. I used the GLPaint sample code project as a firm foundation, but now I want to add the ability for the user to load one of their previous drawings and continue working on it. I know how to get the framebuffer contents and save it as a UIImage. Is there a way for me to take the UIImage and tell GL to draw that? Any help is much appreciated.

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  • Get foreign key in external content type to show up in list view

    - by Rob
    I have come across blogs about how to setup an external content type (e.g. http://www.dotnetmafia.com/blogs/dotnettipoftheday/archive/2010/02/02/it-s-easy-to-configure-an-external-list-with-business-connectivity-services-bcs-in-sharepoint-foundation-2010.aspx) but I have not seen any examples of what to do when your external SQL DB has foreign keys. For example. I have a database that has orders and customers. An order has one and only one customer and a customer can have many orders. How can I setup external content types in such a way that when in the list view of these external content types, I can jump between and possible lookup values to that other type?

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  • Groovlet + Tomcat: "unable to resolve class" when importing libraries

    - by Rob Hruska
    I'm having some trouble running a groovy servlet (groovlet) in tomcat that imports a library class. When I don't import anything the groovlet works correctly, but if I do import something that I expect to be on the classpath (I can import the same class successfully in a regular servlet), I see the following error: groovy.util.ScriptException: Could not parse scriptName: /MyGroovlet.groovy java.lang.RuntimeException: groovy.util.ScriptException: Could not parse scriptName: /MyGroovlet.groovy at groovy.servlet.GroovyServlet$1.call(GroovyServlet.java:123) ... Caused by: org.codehaus.groovy.control.MultipleCompilationErrorsException: startup failed, /MyGroovlet.groovy: 1: unable to resolve class com.mycompany.mypackage.MyLibraryClass @ line 1, column 1. The jar containing MyLibraryClass is in shared/lib, which is loaded by tomcat by the following in catalina.properties: shared.loader=...,${catalina.base}/shared/lib/*.jar,... My groovlets are mapped as described in the user guide in my application's web.xml: <servlet> <servlet-name>GroovyServlet</servlet-name> <servlet-class>groovy.servlet.GroovyServlet</servlet-class> </servlet> <servlet-mapping> <servlet-name>GroovyServlet</servlet-name> <url-pattern>*.groovy</url-pattern> </servlet-mapping> And here's the code for the groovlet, MyGroovlet.groovy: import com.mycompany.mypackage.MyLibraryClass MyLibraryClass.someStaticMethod() My groovlet is deployed to WEB-INF/groovy/MyGroovlet.groovy, per the GroovyServlet API. When I visit http://localhost:8080/myapplication/MyGroovlet.groovy, the error described previously is written to my application logs. Is there some way that I need to explicitly declare the runtime classpath for GroovyServlet? I've tried moving the library jar to several places, including WEB-INF/lib and moving the actual MyLibraryClass.class file to WEB-INF/classes, but with no luck.

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