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• How to replace a Widget with another using Qt ?

  - by Natim

  Hi, I have an QHBoxLayout with a QTreeWidget on the left, a separator on the middle and a widget on the right. When I click on the QTreeWidget, I want to change the widget on the right to modify the QTreeWidgetItem I tried to do this with this code : def new_rendez_vous(self): self.ui.horizontalLayout_4.removeWidget(self.ui.editionFormWidget) del self.ui.editionFormWidget self.ui.editionFormWidget = RendezVousManagerDialog(self.parent) self.ui.editionFormWidget.show() self.ui.horizontalLayout_4.addWidget(self.ui.editionFormWidget) self.connect(self.ui.editionFormWidget, QtCore.SIGNAL('saved'), self.scheduleTreeWidget.updateData) def edit(self, category, rendez_vous): self.ui.horizontalLayout_4.removeWidget(self.ui.editionFormWidget) del self.ui.editionFormWidget self.ui.editionFormWidget = RendezVousManagerDialog(self.parent, category, rendez_vous) self.ui.editionFormWidget.show() self.ui.horizontalLayout_4.addWidget(self.ui.editionFormWidget) self.connect(self.ui.editionFormWidget, QtCore.SIGNAL('saved'), self.scheduleTreeWidget.updateData) def edit_category(self, category): self.ui.horizontalLayout_4.removeWidget(self.ui.editionFormWidget) del self.ui.editionFormWidget self.ui.editionFormWidget = CategoryManagerDialog(self.parent, category) self.ui.editionFormWidget.show() self.ui.horizontalLayout_4.addWidget(self.ui.editionFormWidget) self.connect(self.ui.editionFormWidget, QtCore.SIGNAL('saved'), self.scheduleTreeWidget.updateData) But it doesn't work and all the widgets are stacked up on each other : . Do you know how I can remove the old widget and next display the new one ?

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• Expand in linq not loading inner data collections from service.

  - by Kit

  I am seeing odd behavior with service queries! I am using MVVM pattern for a silverlight 3 app on 3.5 framework and Dataservices 1.5. The following code eager loads correctly the parent object and the child heirarchy perfectly IF and ONLY IF I am preloading the data. But I would like to fetch a different set of the parent object (and its child heirarchy) on different button clicks. What I am seeing is that on button click, only the parent object is retrieved, and the child heirarchy contains nothing. Any suggestions? Any ideas how to tackle this? Thanks all. The method: DataServiceQuery serviceQuery = (DataServiceQuery)(from m1 in dbEntities.gis_Region.Expand("gis_RegionValue/gis_Measure") where m1.RegionGuid == new Guid(regionGuid) select m1); serviceQuery.BeginExecute(GetRegionDetailAsyncResult, serviceQuery); The wired Async Result: DataServiceQuery query = (DataServiceQuery)result.AsyncState; gis_Region region = query.EndExecute(result).First();

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• QuestionOrAnswer model?

  - by Mark

  My site has Listings. Users can ask Questions about listings, and the author of the listing can respond with an Answer. However, the Answer might need clarification, so I've made them recursive (you can "answer" an answer). So how do I set up the database? The way I have it now looks like this (in Django-style models): class QuestionOrAnswer(Model): user = ForeignKey(User, related_name='questions') listing = ForeignKey(Listing, related_name='questions') parent = models.ForeignKey('self', null=True, blank=True, related_name='children') message = TextField() But what bugs me is that listing is now an attribute of the answers as well (it doesn't need to be). What happens if the database gets mangled and an answer belongs to a different listing than its parent question? That just doesn't make any sense. We can separate it with polymorphism: QuestionOrAnswer user message created updated Question(QuestionOrAnswer) shipment Answer(QuestionOrAnswer) parent = ForeignKey(QuestionOrAnswer) And that ought to work, but now ever question and answer is split into 2 tables. Is it worth this overhead for clearly defined models?

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• MooTools - Programmatically fired events not working with event delegation

  - by Anurag

  Would really appreciate if anyone can help me figure out why I am unable to fire events programmatically when using event delegation in MooTools (from the Element.Delegation class). There is a parent <div> that has a change listener on some child <input> elements. When the change event is triggered by user actions, the handler on the parent div gets triggered, but when I fire it programmatically with fireEvent on any child input, nothing happens. The basic setup is: html <div id="listener"> <input type="text" id="color" class="color" /> ????????????????????????????????????????????????????????????????</div>??????????? js $("listener").addEvent("change:relay(.color)", function() { alert("changed!!"); }); $("color").fireEvent("change"); // nothing happens The event handler on the parent div does not get called. Any help is appreciated. Cheers!

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• Database Modelling - Conceptually different entities with near identical fields

  - by Andrew Shepherd

  Suppose you have two sets of conceptual entities: MarketPriceDataSet which has multiple ForwardPriceEntries PoolPriceForecastDataSet which has multiple PoolPriceForecastEntry Both different child objects have near identical fields: ForwardPriceEntry has StartDate EndDate SimulationItemId ForwardPrice MarketPriceDataSetId (foreign key to parent table) PoolPriceForecastEntry has StartDate EndDate SimulationItemId ForecastPoolPrice PoolPriceForecastDataSetId (foreign key to parent table) If I modelled them as separate tables, the only difference would be the foreign key, and the name of the price field. There has been a debate as to whether the two near identical tables should be merged into one. Options I've thought of to model this is: Just keep them as two independent, separate tables Have both sets in the one table with an additional "type" field, and a parent_id equalling a foreign key to either parent table. This would sacrifice referential integrity checks. Have both sets in the one table with an additional "type" field, and create a complicated sequence of joining tables to maintain referential integrity. What do you think I should do, and why?

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• Best way to bind node collection to itemscontrol in Silverilght

  - by mrtrombone

  I have a Silverlight project where the main objects are just a bunch of nodes that are joined to each other. A parent node can have many children. I want to be able to bind the nodes to an itemscontrol or similar and so was wondering how to best structure the parent child relationship. Is it OK to create a flat top level list of all nodes (List allNodes) and add each node to that, binding the list to the itemscontrol, then on top of that add each node to it's parent's 'childnodes' list to establish the structure - or am I doing some kind of ugly doubling up? Just hoping there is some kind of best practice or pattern I can latch on to Thanks

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• print hierarchy data(adjacency list model) in a list(ul/ol/li)

  - by adi

  I have adjacency list model like on the page http://dev.mysql.com/tech-resources/articles/hierarchical-data.html i have make a full table containing all data ordered by level using this SELECT t1.name AS lev1, t2.name as lev2, t3.name as lev3, t4.name as lev4 FROM category AS t1 LEFT JOIN category AS t2 ON t2.parent = t1.category_id LEFT JOIN category AS t3 ON t3.parent = t2.category_id LEFT JOIN category AS t4 ON t4.parent = t3.category_id WHERE t1.name = 'ELECTRONICS'; ORDER by ..... I want to make an unordered list using php from the table Anyone can help me...

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• How to use group by for grouping varchar data.

  - by Shantanu Gupta

  I have a table that contains some data given below pk_map_id preferences ImmediateParent Department_Id -------------------- -------------------- -------------------- -------------------- 20 14 5 1 21 15 5 1 22 16 6 1 23 9 4 2 24 4 3 2 25 24 20 2 26 25 20 2 27 23 13 2 I want to group my records on behalf of department then immediate parent then preferences each seperated by ',' i.e. department Immediate Parent preferences 1 5,6 14,15,16 2 4,3,20,13 9,4,24,25,23 and this table also Immediate parent preferences 5 14,15 6 16 4 9 3 4 20 24,25 13 13 In actual scenario all these are my ids which are to be replaced by their string fields. I am using sql server 2k5

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• How to build unlimited level of menu through PHP and mysql

  - by Starx

  Well, to build my menu my menu I use a db similar structure like this To assign another submenu for existing submenu I simply assign its parent's id as its value of parent field. parent 0 means top menu now there is not problem while creating submenu inside another submenu now this is way I fetch the submenu for the top menu <ul class="topmenu"> <? $list = $obj -> childmenu($parentid); //this list contains the array of submenu under $parendid foreach($list as $menu) { extract($menu); echo '<li><a href="#">'.$name.'</a></li>'; } ?> </ul> What I want to do is. I want to check if a new menu has other child menu and I want to keep on checking until it searches every child menu that is available and I want to display its child menu inside its particular list item like this Home ........

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• Using Maven shade plugin in a multi module project

  - by Manoj

  I have a scenario where-in I need to create an uber jar of a multi module maven project including all modules and their dependencies. I tried using maven shade plugin. but it seems to work only when I use it at the module level. If I add the plugin entry in parent pom then the build breaks (it tries to shade the parent pom) [INFO] Replacing original artifact with shaded artifact. [INFO] Replacing null with C:\Projects\foo.bar\target\foobar-0.0.1-SNAPSHOT-shaded.pom [INFO] ------------------------------------------------------------------------ [ERROR] BUILD ERROR [INFO] ------------------------------------------------------------------------ [INFO] Error creating shaded jar: null It does seem to make sense since the <packaging> for the parent maven project is pom. But there should be some way to create an uber jar for a multi module project... Any ideas people???

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• Avoid warning 'Unreferenced Formal Parameter'

  - by bdhar

  I have a super class like this: class Parent { public: virtual void Function(int param); }; void Parent::Function(int param) { std::cout << param << std::endl; } ..and a sub-class like this: class Child : public Parent { public: void Function(int param); }; void Child::Function(int param) { ;//Do nothing } When I compile the sub-class .cpp file, I get this error warning C4100: 'param' : unreferenced formal parameter As a practise, we used to treat warnings as errors. How to avoid the above warning? Thanks.

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• No method 'get' on backbone model save

  - by user888734

  I'm using backbone for a reasonably complicated form. I have a number of nested models, and have been computing other variables in the parent model like so: // INSIDE PARENT MODEL computedValue: function () { var value = this.get('childModel').get('childModelProperty'); return value; } This seems to work fine for keeping my UI in sync, but as soon as I call .save() on the parent model, I get: Uncaught TypeError: Object #<Object> has no method 'get' It seems that the child model kind of temporarily stops responding. Am I doing something inherently wrong? EDIT: The stack trace is: Uncaught TypeError: Object #<Object> has no method 'get' publish.js:90 Backbone.Model.extend.neutralDivisionComputer publish.js:90 Backbone.Model.extend.setNeutralComputed publish.js:39 Backbone.Events.trigger backbone.js:163 _.extend.change backbone.js:473 _.extend.set backbone.js:314 _.extend.save.options.success backbone.js:385 f.Callbacks.o jquery.min.js:2 f.Callbacks.p.fireWith jquery.min.js:2 w jquery.min.js:4 f.support.ajax.f.ajaxTransport.send.d

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• set and get variables throughout moive - actionscript 3

  - by ed209

  I need to set various variables depending on what a user clicks. Those variables then need to be accessed by other movieclips. The problem is that at the time of clicking, those "other movieclips" don't exist on the timeline yet. What I have done is assign the variable to the parent movieclip, although I guess I could just as easily set them to the root. Then I would grab that value when the relevant clip is initiated. // set - works MovieClip(parent).aMovieClip.someVariable = myVal; // get? - doesn't work getVar = MovieClip(parent).aMovieClip.someVariable; the above doesn't work - what is the correct way to get that value whenever I need it. I guess it's a case of getting and setting global variables

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• C++ class initialisation containing class variable initialization

  - by Phil Hannent

  I noticed some code of a colleague today that initialized class variables in the initialization. However it was causing a warning, he says because of the order they are in. My question is why is it better to do variable initialization where it currently is and not within the curly brackets? DiagramScene::DiagramScene( int slideNo, QRectF screenRect, MainWindow* parent ) : QGraphicsScene( screenRect, parent ), myParent( parent ), slideUndoImageCurrentIndex(-1), nextGroupID(0), m_undoInProgress(false), m_deleteItemOnNextUndo(0) line(0), path(0) { /* Setup default brush for background */ scDetail->bgBrush.setStyle(Qt::SolidPattern); scDetail->bgBrush.setColor(Qt::white); setBackgroundBrush(scDetail->bgBrush); }

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• jQuery .closest returns undefined

  - by Andy Holmes

  I've got the code below which works fine, however the jquery to add the items doesnt find the data-parent-room value and just returns undefined. This is the only thing not working :( HTML: <div id="inventoryRooms"> <!--BOX SHART--> <div class="widget box formHolder" data-parent-room="1"> <!--ROOM NAME--> <form class="widget-header rooms"> <input type="text" placeholder="Type Room name" name="roomName[]" class="form-input add-room-input input-width-xxlarge"> <input type="hidden" class="roomId" name="roomId[]"> <input type="hidden" class="inventoryId" name="inventoryId[]" value="<?=$_GET['inventory_id']?>"> <div class="toolbar no-padding"> <div class="btn-group"> <span class="btn saveRoom"><i class="icon-ok"></i> Save Room</span> </div> </div> </form> <!--/END--> <!--GENERIC ROW TITLES--> <div class="widget-header header-margin hide"> <div class="row row-title"> <div class="col-md-3"><h5>ITEM</h5></div> <div class="col-md-3"><h5>DESCRIPTION</h5></div> <div class="col-md-3"><h5>CONDITION</h5></div> <div class="col-md-2"><h5>PHOTOGRAPH</h5></div> <div class="col-md-1 align-center"><h5><i class="icon-cog"> </i></h5></div> </div> </div> <!--/END--> <!--ADD ITEM--> <div class="items"> </div> <!--/END--> <div class="toolbar-small"> <div class="btn-group"> <span class="btn addItem"><i class="icon-plus"></i> Add Item</span> <span data-toggle="dropdown" class="btn dropdown-toggle"><i class="icon-gear"></i> Options<span class="button-space"></span><i class="icon-angle-down"></i></span> <ul class="dropdown-menu pull-right"> <li><a href="#"><i class="icon-trash"></i> Delete Room</a></li> </ul> </div> </div> </div> </div> jQuery: $(document).on('click','.addItem', function(){ $('<!--ROW START-->\ <form class="widget-content item">\ <div class="row">\ <div class="col-md-3"><input type="text" class="form-control" name="itemName[]"></div>\ <div class="col-md-3"><textarea class="auto form-control" name="itemDescription[]" cols="20" rows="1" style="word-wrap: break-word; resize: vertical;"></textarea></div>\ <div class="col-md-3"><textarea class="auto form-control" name="itemCondition[]" cols="20" rows="1" style="word-wrap: break-word; resize: vertical;"></textarea></div>\ <input type="hidden" class="itemId" name="itemId[]" value="">\ <input type="hidden" name="itemInventoryId[]" value="<?=$_GET["inventory_id"]?>">\ <input type="hidden" name="itemParent[]" value="'+$(this).closest().attr('data-parent-room')+'">\ <div class="col-md-2">\ <div class="fileinput-holder input-group">\ <input id="fileupload" type="file" name="files[]" data-url="uploads/">\ </div>\ </div>\ <div class="col-md-1 align-center"><i class="save icon-ok large"> </i>&nbsp;&nbsp;&nbsp;<i class="delete icon-trash large"> </i></div>\ </div>\ </form>\ <!--/ROW END-->').fadeIn(500).appendTo($(this).parents().siblings('.items')); $(this).parent().parent().siblings('.widget-header, .header-margin, .hide').removeClass('hide').fadeIn(); }); Like i say, it all works fine apart from that damn data-parent-room value. Any help is appreciated! using jQuery 1.10.1

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• Linq Query ignore empty parameters

  - by Cj Anderson

  How do I get Linq to ignore any parameters that are empty? So Lastname, Firstname, etc? If I have data in all parameters it works fine. refinedresult = From x In theresult _ Where x.<thelastname>.Value.TestPhoneElement(LastName) Or _ x.<thefirstname>.Value.TestPhoneElement(FirstName) Or _ x.<id>.Value.TestPhoneElement(Id) Or _ x.<number>.Value.TestPhoneElement(Telephone) Or _ x.<location>.Value.TestPhoneElement(Location) Or _ x.<building>.Value.TestPhoneElement(building) Or _ x.<department>.Value.TestPhoneElement(Department) _ Select x Public Function TestPhoneElement(ByVal parent As String, ByVal value2compare As String) As Boolean 'find out if a value is null, if not then compare the passed value to see if it starts with Dim ret As Boolean = False If String.IsNullOrEmpty(parent) Then Return False End If If String.IsNullOrEmpty(value2compare) Then Return ret Else ret = parent.ToLower.StartsWith(value2compare.ToLower.Trim) End If Return ret End Function

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• How to remove an element from opener window viewsource using javascript

  - by spj

  Hi Step 1 I've two screens one is parent and the other one is child. On click of a button in the parent window the child popup will open. Step 2 On click of a button in child i'm displaying the html(viewsource) of parent window in a textbox(.net) and holding in a hidden variable hdnSource too. Step 3 I've 4 checkboxes in the child window. If the checkbox is not checked, then that part of html should be removed. eg: cbxPersonal, cbxProfessional if cbxProfessional is unchecked I should remove divProfessional from html which is in hdnSource and display in the textbox Can anyone help me to do the 3rd part of coding. Since the html is in the variable, I'm not able to find the div with document.getElementById

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• Inheritance in kohana

  - by Binaryrespawn

  Hi all, I have recently started to use Kohana and I know inheritance is in infancy stages at the moment. The work around is using a $_has_one annotation on the child class model. In may case i have "page" as the parent of "article". I have something like, protected $_has_one = array('mypage'=>array('model'=>'page', 'foreign_key'=>'id')); In my controller, I have an action which queries the database. In this query I am trying to access fields form the parent of "article" which is the "page". $n->articles=ORM::factory('article')->where('expires','=',0) ->where('articledate','<',date('y-m-d')) ->where('expirydate','>',date('y-m-d')) ->where('mypage->status','=','PUBLISHED') ->order_by('articledate','desc') ->find_all(); The status column resides in the page table and my query is generating an error to the effect of "cannot find status", clearly because it belongs to the parent. Any ideas ?

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• Can I grant explicit Javascript methods to a different-host iframe?

  - by Matchu

  I'm thinking about a system in which I allow users to create Javascript-empowered widgets for other users to embed in their dashboard on my website. I'd like to limit these widgets fairly strictly, so each would exist as an iframe kept on its own unique hostname: the widget with ID #47 would be accessible at w47.widgets.example.com, for example. It would be helpful, for permission-granting dialogs and the like, to allow the widget to call very specific methods explicitly granted by the parent window, without authorizing the iframe to do whatever it likes with the parent frame on the user's behalf. Is it possible for a parent document to explicitly allow certain method calls to a child document on a different host?

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• Child service not writing to event log

  - by Tommy Fisk

  I am having a very simple (but incredibly frustrating) issue with a parent service and the child service. Let's call the parent service "Service A" and the child "Service B". Both services reside on the same box. Using WCF Storm, when I send Service B a message, I see lots of entries in the event viewer for it. However, if I send a message to Service A, which calls Service B, I only see entries from Service A. So for some reason, the child logs are not written when the parent calls it, but if I call it myself, the logs do indeed show up, so I know it's not a problem with the logging or anything like that. Here is what I am using to write to the event log. // in some random static class private static EventLog el = new EventLog(); el.WriteEntry("In " + location + ", " + message); // params passed in Does anyone know why this is happening? And more importantly what I can do about it?

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• Drupal node reference

  - by Nikunj Kotecha

  I am using two content types - test_parent & test_child In test_child there are two fields, both of type datetime And in test_parent there are two fields, week_no & 7 node references I am using node_save to save a new node. After saving a node of parent type, and then saving the node of child type, i want to update the node it into the parent type. I have completed creation of both nodes from code, and also i am able to update nid in parent type from code. The problem is, the change in db is getting reflected in db but not on drupal node view. Even if i edit the node from drupal, it's showing -none- selected in node reference. Please help.

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• Assign values from same table

  - by Reddy S R

  I have a database table with parent child relationships between different rows. 1 parent can have any number of children. Children do not have children. I want to copy 'Message' from 'Parent Category' to child categories. CategoryID Name Value Message ParentID DeptId 1 Books 9 Specials 1 2 Music 7 1 3 Paperback 25 1 1 4 PDFs 26 1 2 5 CDs 35 2 1 If that was sample data, Paperback should have Specials as it's Message after the query is run. I have gotten the child rows (the query runs very slow, don't know why), but how do I get the data and assign it to appropriate child rows? --@DeptId = 1 select * from Categories where ParentID in( select CategoryID from Categories where DeptID = @DeptId ) I would like to see a solution that would not use cursors. Thanks

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• mysql database design: thread and reply of a reply?

  - by ajsie

  in my forum i have threads and replies. one thread has multiple replies. but then, a reply can be a reply of an reply (like google wave). because of that a reply has to have a column "reply_id" so it can point to the parent reply. but then, the "top-level" replies (the replies directly under the thread) will have no parent reply. so how can i fix this? how should the columns be in the reply table (and thread table). at the moment it looks like this: threads: id title body replies: id thread_id (all replies will belong to a thread) reply_id (here lies the problem. the top-level replies wont have a parent reply) body what could a smart design look like to enable reply a reply?

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• Padding List Items?

  - by Lee Olayvar

  I have a list where i basically need a hierarchy of items. Any children of an item would be padded slightly, as to easily distinguish their parent item. How could this be achieved? Note that i could, if needed, make each parent show no children, and then when the parent is clicked, a new list containing all of it's children is loaded. This however requires more clicking to display information than i would prefer. Also, the items themselves will contain graphics and whatnot (to show a drag'n'drop button, etc), so it would be best if it visually appeared as if the item itself had a margin, rather than the contents of the item being padded. Thanks to any replies!

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• Security Policy not working, as3

  - by VideoDnd

  How to I get my security policy working? My parent swf parses an XML doc and loads 2 children. It throws a 2148 security error, and only works in the Flash IDE. PARENT SWF flash.system.Security.loadPolicyFile("crossdomain.xml"); I've referenced my security file from my swf. I Also published my parent swf as 'network only' and put all the crossdomain.xml and everything else in the same folder. I need to click on the animations and have them place from a local computer at a kiosk. Any suggestions? POLICY FILE <?xml version=\"1.0\"?> <!DOCTYPE cross-domain-policy SYSTEM \"/xml/dtds/cross-domain-policy.dtd\"> <cross-domain-policy> <site-control permitted-cross-domain-policies=\"master-only\"/> <allow-access-from domain=\"*\" to-ports=\"*\" secure=\"false\" /> </cross-domain-policy>"

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