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  • how do I migrate Datamapper on appengine

    - by Roy
    I've changed my model from class Place include DataMapper::Resource has n, :trails property :id, Serial property :name, String, :length => 140 property :tag, String, :required => true timestamps :at end to class Place include DataMapper::Resource has n, :trails property :id, Serial property :name, String, :length => 140 property :tag, String, :required => true property :trail_count, Integer, :default => 0 timestamps :at end I just added "property :trail_count, Integer, :default = 0" and i want to migrate the existing appengine table to have the extra field "trail_count" i've read that DataMapper.auto_upgrade! should do it. but i get an error "undefined method `auto_upgrade!' for DataMapper:Module" can you please help How do i migrate the DM models?

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  • Changing Image In a Button After Being Clicked?

    - by BuZzZzJaY
    Creating a game in Android using multiple Buttons to display an image from the drawable folder. I want to change the button to a different image after the button has been clicked on. Here is the button code: <Button android:id="@+id/b36" android:background="@drawable/black" android:layout_width="45px" android:layout_height="45px" /> I can't find anything about how to change the actual image of the button. You can change the color of the button by using the following code in the java file: b36.setBackgroundColor(0xAA00AA00);

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  • IN statement performance in PostgreSQL (and in general)

    - by Vasil
    I know this has probably been asked before, but I can't find it with SO's search. Lets say i've TABLE1 and TABLE2, who should I expect the performance of a query such as this: SELECT * FROM TABLE1 WHERE id IN SUBQUERY_ON_TABLE2; as the number of rows in TABLE1 and TABLE2 grow and id is a primary key on TABLE1. Yes, I know using IN is such a n00b mistake, but TABLE2 has a generic relation (django generic relation) to multiple other tables so I can't think of another way to filter the data. At what (aproximate) ammount of rows in TABLE1 and TABLE2 should I expect to notice performance issues because of this? Will performance degrade linearly, exponentially etc. depending on the number of rows?

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  • adding other parameter to function

    - by Ronnie Chester Lynwood
    hello. i got a function that listing downloads in a table with foreach. it's also lists searched term, search type. public function fetchDownloads($displaySite=true) { $downloads = array(); $sqlWhere = ""; if(isset($this->q)) { if(strlen($this->q) <= $this->recents_length && !empty($this->q)) { $insertRecent = $this->processDataHook("insertRecent",$this->q); if($insertRecent) { if(!@mysql_query("INSERT INTO wcddl_recents (query) VALUES ('".$this->qSQL."')")) { @mysql_query("UPDATE wcddl_recents SET searches = searches+1 WHERE query = '".$this->qSQL."'"); } } } if($this->search_type == "narrow") { $sqlWhere = " WHERE title LIKE '%".mysql_real_escape_string(str_replace(" ","%",$this->q))."%'"; } elseif($this->search_type == "wide") { $qExp = explode(" ",$this->q); $sqlWhere = array(); foreach($qExp as $fq) $sqlWhere[] = "title LIKE '%".mysql_real_escape_string($fq)."%'"; $sqlWhere = implode(" OR ",$sqlWhere); $sqlWhere = " WHERE (".$sqlWhere.")"; } } if(isset($this->type)) { if(!empty($sqlWhere)) { $sqlWhere .= " AND type = '".$this->typeSQL."'"; } else { $sqlWhere = " WHERE type = '".$this->typeSQL."'"; } } $sqlWhere = $this->processDataHook("fetchDownloadsSQLWhere",$sqlWhere); $this->maxPages = mysql_query("SELECT COUNT(*) FROM wcddl_downloads".$sqlWhere.""); $this->maxPages = mysql_result($this->maxPages,0); $this->numRows = $this->maxPages; $this->maxPages = ceil($this->maxPages/$this->limit); $sqlMain = "SELECT id,sid,title,type,url,dat,views,rating FROM wcddl_downloads".$sqlWhere." ORDER BY ".(isset($this->sqlOrder) ? mysql_real_escape_string($this->sqlOrder) : "id DESC")." LIMIT ".$this->pg.",".$this->limit.""; $sqlMain = $this->processDataHook("whileFetchDownloadsSQL",$sqlMain); $sqlMain = mysql_query($sqlMain); $this->processHook("whileFetchDownloads"); while($row = mysql_fetch_assoc($sqlMain)) { if($displaySite) { $downloadSite = mysql_query("SELECT name as sname, url as surl, rating as srating FROM wcddl_sites WHERE id = '".$row['sid']."'"); $downloadSite = mysql_fetch_assoc($downloadSite); $row = array_merge($row,$downloadSite); } $downloads_current = $this->mapit($row,array("stripslashes","strip_tags")); $downloads_current = $this->processDataHook("fetchDownloadsRow",$downloads_current); $downloads[] = $downloads_current; } $this->pageList = $this->getPages($this->page,$this->maxPages); $this->processHook("endFetchDownloads"); return $downloads; } I want to add if $_REQUEST['site'] is set, order downloads by sname that catching from wcddl_sites.

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  • Rails: common approach for handling exceptions in restful actions on objects that have been destroye

    - by Greg
    It is very common in Rails for an objects_controller controller to have RESTful edit and destroy actions like so: def edit @object = Object.find(params[:id]) end def destroy @object = Object.find(params[:id]) @object.destroy redirect_to :back end With an associated view that provides edit and destroy links like so: <%= link_to "Edit the Object", edit_object_path(object) %> <%= link_to "Delete", object, :confirm => 'Are you sure?', :method => :delete %> And it is easy to blow this up. If I open two browser windows, A and B, destroy an object with the "Delete" link in browser A and then press the "Edit" link in browser B, the find() in the edit action throws an exception. Obviously there are several ways to deal with this in the edit action: catch the exception and recover gracefully use @object = find(:first, "conditions... etc. and test the @object before going further But seeing as this is such a common pattern, I would love to know how other folks deal with this situation.

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  • Dynamic generated file upload control<using javascript> doesn't post?

    - by udaya
    Hai I am having a form which contains a filetype like this on submit i am calling a script function addRowToTable() { var tbl = document.getElementById('uploadTab'); var lastrow = tbl.rows.length; var iteration = lastrow; var row = tbl.insertRow(lastrow); var cell2 = row.insertCell(0); var e2 = document.createElement('input'); e2.type = 'file'; e2.name = 'ufile[]'; e2.id = 'ufile[]'; e2.size='50'; cell2.appendChild(e2); } This script generates The tr on a button click... In my view generatedsource tool i get the "" like this <tr><td><input size="50" id="ufile[]" name="ufile[]" type="file"></td></tr> when i submit the form i dont get the file name for the generated file type in my view page But i get the file name foe the one that is default What may be the problem?

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  • Best way to manage a header navigation menu from within a template?

    - by Stefan Kendall
    I'm looking to put navigation in my GSP template, and I would like to set the active class on the navigation elements for each respective page. What's the best way to do this? I have several .gsp views merging with a single template that looks like this: <div id="bd" role="main"> <div role="navigation" class="yui-g"> <ul id="nav"><a href="index.gsp"><li class="active">Home</li></a><a href = "products.gsp"><li>Products</li></a><a href = "contacts.gsp"><li>Contact</li></a></ul> </div> <g:layoutBody/> </div>

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  • div on top of div with Google Maps API

    - by JHM_67
    How do I float a div "menu" on top of my Google Maps API "map" div. And maybe possibly add a transparency of 50% on the menu div. Can this be done? #map {width: 835px; height 540px; float: left;} #menu {width: 145px; float: right; padding-top: 10px;} <div id="map"></div> <div id="menu"></div>

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  • Why does MySQL autoincrement increase on failed inserts?

    - by Sorcy
    A co-worker just made me aware of a very strange MySQL behavior. Assuming you have a table with an auto_increment field and another field that is set to unique (e.g. a username-field). When trying to insert a row with a username thats already in the table the insert fails, as expected. Yet the auto_increment value is increased as can be seen when you insert a valid new entry after several failed attempts. For example, when our last entry looks like this... ID: 10 Username: myname ...and we try five new entries with the same username value on our next insert we will have created a new row like so: ID: 16 Username: mynewname While this is not a big problem in itself it seems like a very silly attack vector to kill a table by flooding it with failed insert requests, as the MySQL Reference Manual states: "The behavior of the auto-increment mechanism is not defined if [...] the value becomes bigger than the maximum integer that can be stored in the specified integer type." Is this expected behavior?

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  • How to host your own http-like server using ServiceHost or its analog capable to host WCF services?

    - by Ole Jak
    I use ServiceHost for hosting WCF cervices. I want to host near to my WCF services my own tcp programm (like WCF service but with out WCF) for direct sockets operations (like lien to some sort of broadcasting TCP stream) I want to use ServiceHost for somehow simplyfiing proces of creating my TCP sender\listener, to somehow control namespaces (so I would be able to let my clients to send TCP streams directly into my service using some nice URLs like www.example.com:34123/myserver/stream?id=1 or www.example.com:34123/myserver/stream?id=222 and so that I will not be bothered with Idea of 1 client for 1 socket at one time moment, BTW I realy want to keep my WCF services on the same port as my own server or what it is...) Can any body please help me with this?

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  • LINQ-to-XML to DataGridView: Cannot edit fields -- How to fix?

    - by Pretzel
    I am currently doing LINQ-to-XML and populating a DataGridView with my query just fine. The trouble I am running into is that once loaded into the DataGridView, the values appear to be Un-editable (ReadOnly). Here's my code: var barcodes = (from src in xmldoc.Descendants("Container") where src.Descendants().Count() > 0 select new { Id = (string)src.Element("Id"), Barcode = (string)src.Element("Barcode"), Quantity = float.Parse((string)src.Element("Quantity").Attribute("value")) }).Distinct(); dataGridView1.DataSource = barcodes.ToList(); I read somewhere that the "DataGridView will be in ReadOnly mode when you use Anonymous types." But I couldn't find an explanation why or exactly what to do about it. Any ideas?

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  • Matching process , issue with query

    - by Blerta Blerta
    i have this code which helps me match two different tables.. now, each of this tables, has a epos_id and a rbpos_id ! I have another table which has pairs of rbpos_id and epos_id, something like: id | epos_id | rbpos_id 1 a3566 465jd 2 hkiyb rbposi When i join this other table, i need to check this condition, i mean, the matching should be done, only and if, the epos_id and rbpos_id of the join i'm doing, have the same id,i mean, belong to the same row.. Here is my current query... Thanks! SELECT retailer.date, retailer.time, retailer.location, retailer.user_id,imovo.mobile_number ". "FROM retailer LEFT JOIN imovo ". " ON addtime(retailer.time, '0:0:50')>imovo.time AND retailer.time <imovo.time AND retailer.date=imovo.date

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  • Convert executed SQL result to a list of Model object

    - by huynq9
    I'm wondering that is it possible to convert the executed query result to a list of models. I'm using Ruby with ActiveRecord and need to execute custom SQL query to join two or many tables. The code looks like below: connection = ActiveRecord::Base.connection sql = "select T1.f1, T2.f2 from T1 left join T2 on T1.id = T2.id" @result = connection.execute(sql) In Ruby code, I defined a models to manage the executed SQL result: class Model property :f1, :f2 end Is there any way to convert @result to list of Model object? so I can deal with each item in the list as following @result.each do |item| puts item.f1 puts item.f2 end

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  • problem with pagestate when two links in aspx page

    - by TT.LTT
    I have two links in my aspx page. one link "A" when i click it ...it is downloading some document when i click it other link "B" when I click it ....it redirects me to some other page. Both links triggers function from code behind. Both links works fine when i first come onto page but when i click A it shows me message to download it "open" "save" "cancel" problem is when i click cancel I remain on the same page but now no links work neither link A nor link B. I guess there is some problem with the state my page is in . How i can avoid this? Code so far: <asp:Linkbutton ID="linkbutton1" runat="server" Text="A" onClick="Codebehindmethod" /> <asp:Linkbutton ID="linkbutto2" runat="server" Text="B" onClick="Codebehindmethod1" >

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  • How can I serialize the values of checked checkboxes in an iFrame into a hidden form field on clicki

    - by Frank Bailey
    I have an iFrame like so: <iframe width="100%" frameborder="0" height="470" allowtransparency="true" name="productframe" id="productframe" style="border-bottom:1px solid #eee"></iframe> The iframe contains several line items drawn from a sql server db, and I can check any of the checkboxes I want to perform a task with - in this case delete them. I have a button in the parent document that says "Delete selected", and I'd like to be able to click this button and populate a hidden field in my parent page with the values of the selected checkboxes in the child iframe. My checkboxes look like this: <input id="Checkbox1" type="checkbox" value="47" title="Select this row" name="selectItem"/> I have an instance of jquery on my parent page so I can make use of jquery selectors, I just have no clue as to the syntax needed to do this. Thanks in advance to anyone who can help me on this.

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  • Scaling an image in a scroller resizes the scroller when relative dimension are set to the scroller

    - by tit
    Hi, I would like to position relatively a scroller in my application like below. When I scale the image, I resize the scroller... <s:Scroller width="50%" height="50%" > <s:Group> <mx:Image id="img" source="media/paxRomana005_150dpi.jpg" /> </s:Group> </s:Scroller> If I set absolute dimension to the scroller like below, it does not resize (behaviour I want) <s:Scroller width="400" height="400" > <s:Group> <mx:Image id="img" source="media/paxRomana005_150dpi.jpg" /> </s:Group> </s:Scroller> .. but my intention is to position the scroller relatively to other components. Any explanations/solutions? Thanks

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  • did you know some good web site about 'iphone css layouts' ,and can you help me to improve my code..

    - by zjm1126
    i want to create a webpage on iphone , but i can't complete it in a simple way, this is my code: <!DOCTYPE html PUBLIC "-//WAPFORUM//DTD XHTML Mobile 1.0//EN" "http://www.wapforum.org/DTD/xhtml-mobile10.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" > <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <meta name="viewport" content="width=device-width,minimum-scale=1.0,maximum-scale=5.0,user-scalable=yes"> </head> <body onorientationchange="updateOrientation();" onload=updateOrientation()> <div id="a"> <input id='ab' type="button" value="button" /> </div> <div id=b style="display: none">sssadwq dwqdqw</div> <style type="text/css"> *{ margin:0; padding:0; } /* Reposition on orientation change */ body.landscape{ height: 268px; } body.landscape #a{ height:134px; line-height:134px; } body.landscape #b{ height:114px; width:470px; } body{ height: 416px; } #a{ line-height:208px; height:208px; text-align:center; } #b{ height:198px; width:310px; background:red; border:5px solid black; } </style> <script src="jquery-1.4.2.js" type="text/javascript"></script> <script type="text/javascript"> function updateOrientation() { var orientation = window.orientation; switch (orientation) { // If we're horizontal case 90: case -90: // Set orient to landscape $(document.body).addClass("landscape"); break; // If we're vertical default: // Set orient to portrait $(document.body).removeClass("landscape"); break; } } $('#ab').click(function(){ if($('#b').css('display')=='none')$('#b').css('display','block') else $('#b').css('display','none') }) </script> </body> </html> it use much more fixed number,this is not the best way ,i think the best way is to use the percentage more and more, can you do it fo me ,, thanks

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  • jquery autocomplete on button click get hidden value

    - by gabriel
    using jquery autocomplete, we get hidden value by calling .result function like this $("#suggest").result(function(event, data, formatted) { $('#hidden').val(data[1]); }); This is only useful when we selected the option from autosuggest list and press enter. What i need is that i enter the option by typing the complete word without selecting it and clicking on Ok button? but i am always getting empty. <input type="text" id="suggest" /> <input type="button" value="Ok" onclick="GetValue()" /> <input type="hidden" id="hidden"/> function GetValue() { //get hidden field value - getting empty var hid=document.getElementById('hidden').value; }

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  • ria entity remove bug

    - by Greg
    hello, I am trying out the ria services and I am experiencing this problem that seems very strange to me. I am creating a new entity of type "House" and add it to context without saving the context so the id of the new entity is 0, after i remove this entity and add another new entity of type "House" again and again without saving the context, here comes the weird part, now I have an entity of type "City" which holds entityset of all "Houses" in that city, so to put the newly created entity "House" into the city i do something like this - house.City = city, where house is type "House" and city is type "City", afte this step a check the context and suddenly there are 2 entities of type "House" with id 0, one of them is the one I have deleted at the beginning. Any idea what is causing this and how to fix it?? thank you Greg

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  • [Django] How to find out whether a model's column is a foreign key?

    - by codethief
    I'm dynamically storing information in the database depending on the request: // table, id and column are provided by the request table_obj = getattr(models, table) record = table_obj.objects.get(pk=id) setattr(record, column, request.POST['value']) The problem is that request.POST['value'] sometimes contains a foreign record's primary key (i.e. an integer) whereas Django expects the column's value to be an object of type ForeignModel: Cannot assign "u'122'": "ModelA.b" must be a "ModelB" instance. Now, is there an elegant way to dynamically check whether b is a column containing foreign keys and what model these keys are linked to? (So that I can load the foreign record by it's primary key and assign it to ModelA?) Or doesn't Django provide information like this to the programmer so I really have to get my hands dirty and use isinstance() on the foreign-key column?

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  • How can I run a Virtual Machine in Windows 8 Developer Preview?

    - by Marc Gravell
    Since having issues installing Ubuntu side-by-side with Windows 8, I thought I'd try running Ubuntu in a VM instead. However, VMWare player has no love for Windows 8 yet (invalid VM86 or something similar), and AFAIK the promised hypervisor options are not currently available for playing with. So: Are there any VM hosts that do work in Windows 8 Developer Preview at this point? (specifically for running Ubuntu) Alternatively, does Wubi work on Windows 8? It seems not; from Wubi: An error occurred: 'WindowsBackend' object has no attribute 'iso_path'

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  • jquery form validation

    - by kalpaitch
    I am using jquery for a quick and easy form validation My forms use the input's default value as a label and I have a little onfocus and onblur javascript function to show and hide this when the user starts to type: <input name='fnameREG' type='text' id='fnameREG' value='first name' size='70' onfocus='clearInput(this)' onblur='clearInput(this)' /> <input name='lnameREG' type='text' id='lnameREG' value='last name' size='70' onfocus='clearInput(this)' onblur='clearInput(this)' /> My issue with the validation is that when the submit button is clicked the pluggin thinks that all the fields are set because they have a default value. I looked but I couldn't find a supplied method to get round this. Thanks!

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  • Class not overwriting with addClass

    - by scatteredbomb
    I'm using jQuery's addClass to add a class to an tab so when clicked it'll change the class so it's obvious the tab is highlighted. My HTML <div id="mainNav"> <ul> <li id="LinktheBand" onclick="nav('theBand')">The Band</li> <li id="linkTheMusic" onclick="nav('theMusic')">The Music</li> My CSS #mainNav li { float:left; margin-right:5px; color:white; font-family:Tahoma; font-weight:bold; padding: 10px 8px 0px 8px; background:url('../images/transparent-65.png'); height:40px; height: 25px !important; border:1px solid #000; } #mainNav li:hover { float:left; margin-right:5px; color:white; font-family:Tahoma; font-weight:bold; padding: 10px 8px 0px 8px; background: #660000; height:40px; height: 25px !important; border:1px solid #660000; } .mainNavSelected { float:left; margin-right:5px; color:white; font-family:Tahoma; font-weight:bold; padding: 10px 8px 0px 8px; background: #660000; height:40px; height: 25px !important; border:1px solid #660000; } My Javascript function nav(a) { $('#'+a).show(); $('#Link'+a).addClass('mainNavSelected'); } This works properly, I check firebug and can see the class="mainNavSelected" is added, but the list element doesn't take any properties of the new class. Firebug lists all the class items for mainNavSelected, but has them all crossed out. What am i missing to replace the class of this element?

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  • How might I escape Unicode characters in a JSON string using JavaScript?

    - by user293006
    JSON String: { "id":31896, "name":"Zickey attitude - McKinley, La Rosi\u00e8re, 21 ao\u00fbt 2006", ... } this causes an unterminated string in JavaScript. My attempt at a solution is: data.replace(/(\S)\1(\1)+/g, ''); or data.replace(/\\u([0-9A-Z])/, ''); any ideas/solution? Example: http://api.jamendo.com/get2/id+name+url+stream+album_name+album_url+album_id+artist_id+artist_name/track/jsonpretty/track_album+album_artist/?n=13&order=ratingmonth_desc&tag_idstr=jazz last node is the problem, fyi. (/\\u([0-9A-Z])/, '\1');

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