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  • How to display image in grails GSP?

    - by Walter
    I'm still learning Grails and seem to have hit a stumbling block. Here are the 2 domain classes: class Photo { byte[] file static belongsTo = Profile } class Profile { String fullName Set photos static hasMany = [photos:Photo] } The relevant controller snippet: class PhotoController { ..... def viewImage = { def photo = Photo.get( params.id ) byte[] image = photo.file response.outputStream << image } ...... } Finally the GSP snippet: <img class="Photo" src="${createLink(controller:'photo', action:'viewImage', id:'profileInstance.photos.get(1).id')}" /> Now how do I access the photo so that it will be shown on the GSP? I'm pretty sure that profileInstance.photos.get(1).id is not correct. Thanks!!

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  • how to group by over anonymous type with vb.net linq to object

    - by smoothdeveloper
    I'm trying to write a linq to object query in vb.net, here is the c# version of what I'm trying to achieve (I'm running this in linqpad): void Main() { var items = GetArray( new {a="a",b="a",c=1} , new {a="a",b="a",c=2} , new {a="a",b="b",c=1} ); ( from i in items group i by new {i.a, i.b} into g let p = new{ k = g, v = g.Sum((i)=>i.c)} where p.v > 1 select p ).Dump(); } // because vb.net doesn't support anonymous type array initializer, it will ease the translation T[] GetArray<T>(params T[] values){ return values; } I'm having hard time with either the group by syntax which is not the same (vb require 'identifier = expression' at some places, as well as with the summing functor with 'expression required' ) Thanks so much for your help!

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  • Javascript Print Script Not Working in IE

    - by TY
    Greets! I'm a noob struggling to learn html and javascript - getting there slowly. I'm trying to print a DIV served up by SimpleModal. The page is at: www.planetsarsfield.com This "Print" function is in the recipe box at the bottom. Everything works great in FF, but it doesn't work at all in IE8. I must be doing something fundamentally wrong but I can't spot it. Any ideas? Cheers, TY ++++++++++++++++++++++++++++++++++++++++++++++++ <script type="text/javascript"> function PrintElem(elem) { Popup($(elem).html()); } function Popup(data) { var mywindow = window.open('', 'basic-modal-content', 'height=400,width=600'); mywindow.document.write('<html><head><title>on the grill... latest recipe</title>'); mywindow.document.write('<link href="PATH/print.css" rel="stylesheet" type="text/css" />') mywindow.document.write('</head><body >'); mywindow.document.write(data); mywindow.document.write('</body></html>'); mywindow.document.close(); mywindow.print(); return true; } </script>

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  • will_paginate undefined method error - Ruby on Rails

    - by bgadoci
    I just installed the gem for will_paginate and it says that it was installed successfully. I followed all the instructions listed with the plugin and I am getting an 'undefined method `paginate' for' error. Can't find much in the way of Google search and haven't been able to fix it myself (obviously). Here is the code: PostsController def index @tag_counts = Tag.count(:group => :tag_name, :order => 'updated_at DESC', :limit => 10) @posts = Post.paginate :page => params[:page], :per_page => 50 respond_to do |format| format.html # index.html.erb format.xml { render :xml => @posts } format.json { render :json => @posts } format.atom end end /model/post.rb class Post < ActiveRecord::Base validates_presence_of :body, :title has_many :comments, :dependent => :destroy has_many :tags, :dependent => :destroy cattr_reader :per_page @@per_page = 10 end /posts/views/index.html.erb <%= will_paginate @posts %>

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  • rails use counts in diferent views

    - by Oluf Nielsen
    Hello i guess this is going to be pretty noob question.. But.. I have an scaffold called list, which has_many :wishes. And with that information in my model, I can in my list view use this code <%=h @list.wishes.count % well now I have made an controller called statusboard.. And in that' I have 3 functions.. Or how to say it.. but it is Index, loggedin, loggedout.. And .. In loggedin and in the file #app/views/statusboard/loggedin.html.erb i want to display this.. Howdy {Username}, you have made {count lists} lists, and {count wishes} wishes here is that i figured i should write in my file.. Howdy {Username}, you have made <%=h @user.list.count % lists, and <%=h @user.wishes.count % wishes my list model is like this = class List < ActiveRecord::Base   attr_accessible :user_id, :name, :description   belongs_to :users   has_many :wishes end and my wish model is like this = class Wish < ActiveRecord::Base   attr_accessible :list_id, :name, :price, :link, :rating, :comment   belongs_to :list end and last my user model is like this = class User < ActiveRecord::Base   # Include default devise modules. Others available are:   # :token_authenticatable, :lockable and :timeoutable   devise :database_authenticatable, :registerable,# :confirmable,              :recoverable, :rememberable, :trackable, :validatable   # Setup accessible (or protected) attributes for your model   attr_accessible :email, :password, :password_confirmation   has_many :lists end i hope someone can help me :-)! / Oluf Nielsen

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  • PHP: How to dynamically add to http_build_query?

    - by oni-kun
    I have a scraping object basically. I want to be able to add POST variables to it like $obj->addvar('Name', 'Value'); What I have now is this: function addvar($var, $val) { $postvars[] = Array($var=>$val); } function initiate() { $this->q = $postvars; } if(!empty($this->post)) { $this->params = http_build_query($q); } I haven't tested because it's too incomplete, But would my addvar() function work? How on earth do I append a key+value to the array so http_build_query would accept it? IE (this is what I want): $obj->addvar('username', 'abc'); $obj->addvar('password', 'foobar'); $obj->send(); //..

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  • CUDA compare arrays

    - by user315511
    Hello. Trying to make an app that will compare 1-to-multiple bitmaps. there is one reference bitmap and multiple other bitmaps. Result from each compare should be new bitmap with diffs. Maybe comparing bitmaps rather as textures than arrays? My biggest problem is making kernel accept more than one input pointer, and how to compare the data.. extern "C" __global__ void compare(float *odata, float *idata, int width, int height) works and following does not (i call the function with enough params) extern "C" __global__ void compare(float *odata, float *idata, float *idata2, int width, int height)

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  • Add KO "data-bind" attribute on $(document).ready

    - by M.Babcock
    Preface I've rarely ever been a JS developer and this is my first attempt at doing something with Knockout.js. The question to follow likely illustrates both points. Backgound I have a fairly complex MVC3 application that I'm trying to get to work with KO (v2.0.0.0). My MVC app is designed to generically control which fields appear in the view (and how they are added to the view). It makes use of partial views to decide what to draw in the view based on the user's permissions (If the user is in group A then show control A, if the user in group B then show control B or possibly if the user is in group A don't include the control at all). Also, my model is very flat so I'm not sure the built-in ability to apply my ViewModel to a specific portion of the view will help. My solution to this problem is to provide an action in my controller that responds with an object in JSON format with that contains the JQuery selector and the content to assign to the "data-bind" attribute and bind the ViewModel to the View in the $(document).ready event using the values provided. Failed Proof-of-concept My first attempt at proving that this works doesn't actually seem to work, and by "doesn't work" I mean it just doesn't bind the values at all (as can be seen in this jsfiddle). I've tried it with the applyBindings inside of the ready event and not, but it doesn't seem to make any bit of difference. Question What am I doing wrong? Or is this just not something that can work with KO (though I've seen at least one example online doing the same thing and it supposedly works)? Like I said in the preface, I've only ever pretended to be a JS developer (though I've generally gotten it to work in the past) so I'm at a loss where to start trying to figure out what I'm doing wrong. Hopefully this isn't a real noob question.

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  • redirect to a route alias on a form validation error

    - by Kevin Monk
    If I'm on a route alias such as /register and I have a form error and I render :new, is it possible for the path to be /register still? At the moment it is rendering /new I could do a redirect_to register_path but then I would lose the params? It's making the following test fail: Scenario: Try registering with a bad staff number Given I am on the registration page When I fill in "email" with "[email protected]" And I fill in "First Name" with "Kevin" And I fill in "last name" with "Monk" And I fill in "Employee Number" with "something barking123" And I press "Register" Then I should be on the registration page And I should see "Your employee ID number looks incorrect."

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  • C#, Linq, Dynamic Query: Code to filter a Dynamic query outside of the Repository

    - by Dr. Zim
    If you do something like this in your Repository: IQueryable<CarClass> GetCars(string condition, params object[] values) { return db.Cars.Where(condition, values); } And you set the condition and values outside of the repository: string condition = "CarMake == @Make"; object[] values = new string[] { Make = "Ford" }; var result = myRepo.GetCars( condition, values); How would you be able to sort the result outside of the repository with Dynamic Query? return View( "myView", result.OrderBy("Price")); Somehow I am losing the DynamicQuery nature when the data exits from the repository. And yes, I haven't worked out how to return the CarClass type where you would normally do a Select new Carclass { fieldName = m.fieldName, ... }

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  • Updating multiple related tables in SQLite

    - by PerryJ
    Just some background, sorry so long winded. I'm using the System.Data.SQLite ADO.net adapter to create a local sqlite database and this will be the only process hitting the database, so I don't need to worry about concurrency. I'm building the database from various sources and don't want to build this all in memory using datasets or dataadapters or anything like that. I want to do this using SQL (DdCommands). I'm not very good with SQL and complete noob in sqlite. I'm basically using sqlite as a local database / save file structure. The database has a lot of related tables and the data has nothing to do with People or Regions or Districts, but to use a simple analogy, imagine: Region table with auto increment RegionID, RegionName column and various optional columns. District table with auto increment DistrictID, DistrictName, RegionId, and various optional columns Person table with auto increment PersonID, PersonName, DistrictID, and various optional columns So I get some data representing RegionName, DistrictName,PersonName, and other Person related data. The Region, District and/or Person may or may not be created at this point. Once again, not being the greatest with this, my thoughts would be something like: Check to see if Region exists and if so get the RegionID else create it and get RegionID Check to see if District exists and if so get the DistrictID else create it adding in RegionID from above and get DistrictID Check to see if Person exists and if so get the PersonID else create it adding in DistrictID from above and get PersonID Update Person with rest of data. In MS SQL Server I would create a stored procedure to handle all this. Only way I can see to do this with sqlite is a lot of commands. So I'm sure I'm not getting this. I've spent hours looking around on various sites but just don't feel like I'm going down the right road. Any suggestions would be greatly appreciated.

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  • Raphael js library: problems with animateAlong in IE7

    - by Andrei
    Hi there, I'm having trouble making a simple shape move along a path in IE7 (the only version of IE I tried, actually). The following code works fine in chrome and firefox, but not IE. I couldn't find an obvious reason, has anybody seen something similar? canvas.path(rPath.path).attr("stroke", "blue"); var circle = canvas.circle(rPath.startX, rPath.startY, 5); circle.animateAlong(rPath.path, 3000, true); My rPath variable has the path and the starting point coordinates. Microsoft script debugger points to this line as the one where the code breaks: os.left != (t = x - left + "px") && (os.left = t); (line 2131 inside the uncompressed raphael.js script file, inside Element[proto].setBox = function (params, cx, cy) {...}) Any ideas? Any experience (good or bad) with raphael's animateAlong in IE7? TIA, Andrei

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  • Creating a specialised view filtering form in Rails

    - by Schroedinger
    G'day guys, I have a current set of data, and I generate multiple analyses of this data (each analysis into its own active record item called a pricing_interval) using a helper function at the moment. Currently to analyse the set of data, you need a start time(using datetime_select) an integer (using text_field) and a name (using text_field) I would like on submission of the form to be redirected to the index page of my pricing_interval, as the values will be re-generated. Manually generating a range proves that my helper methods work. How would I build a form that on submit would send parameters to a function in the form of (date,integer,name) so that it could immediately begin work whilst redirecting the user to server/pricing_intervals Anything at all would help, I've spent hours over the past few days trying to get the rails form syntax working properly to no avail, a really straightforward guide to what I would implement to get this working would be amazingly appreciated. I've looked through the form guides, as I'm not creating an object, but merely parsing params, there's got to be an easy way to do this, right?

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  • How to set up an insert to a grails created file with next sequence number?

    - by Jack BeNimble
    I'm using a JMS queue to read from and insert data into a postgres table created by grails. The problem is obtaining the next sequence value. I thought I had found the solution with the following statement (by putting "DEFAULT" where the ID should go), but it's no longer working. I must have changed something, because I needed to recreate the table. What's the best way to get around this problem? ps = c.prepareStatement("INSERT INTO xml_test (id, version, xml_text) VALUES (DEFAULT, 0, ?)"); UPDATE: In response to the suggested solution, I did the following: Added this to the the domain: class XmlTest { String xmlText static constraints = { id generator:'sequence', params:[name:'xmltest_sequence'] } } And changed the insert statement to the following: ps = c.prepareStatement("INSERT INTO xml_test (id, version, xml_text) VALUES (nextval('xmltest_sequence'), 0, ?)"); However, when I run the statement, I get the following error: [java] 1 org.postgresql.util.PSQLException: ERROR: relation "xmltest_sequence" does not exist Any thoughts?

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  • Javascript: Collision detection

    - by jack moore
    Hello, could someone please help me to understand how collision detection works in JS? I can't use jQuery or gameQuery - already using prototype - so, I'm looking for something very simple. Not asking for complete solution, just point me to the right direction. Let's say there's: <div id="ball"></div> and <div id="someobject0"></div> Now the ball is moving (any direction). "Someobject"(0-X) is already pre-defined and there's 20-60 of them randomly positioned like this: #someobject {position: absolute; top: RNDpx; left: RNDpx;} I can create an array with "someobject(X)" positions and test collision while the "ball" is moving... Something like: for(var c=0; c<objposArray.length; c++){ ........ and code to check ball's current position vs all objects one by one.... } But I guess this would be a "noob" solution and it looks pretty slow. Is there anything better?

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  • RPX API Call auth_info is returning "missing parameter" error

    - by James Lawruk
    I cannot get the RPX auth_info API call to work. It keeps returning the error: "Missing parameter: apiKey" I am using the C# RPX Helper Class provided on their Wiki:RPX Helper Class Below is my code in my Page_Load method. The RPX service works by sending a POST to a Url that I specify. My code gets the token from the post data shown below. Then I call the AuthInfo API method. string token = Request.Params["token"]; string apiKey = "xxxxxxxxxxxxxxx"; //my API key Rpx rpx = new Rpx(apiKey, "http://rpxnow.com"); XmlElement xmlElement = rpx.AuthInfo(token); Everything looks good. The token is populated. Within their code, the "apiKey" value pair is added to the post data written to the Request stream. Has anyone had luck with this? Any ideas why this is not working? Thanks.

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  • How to embed multiple tags in Rails routes, like Stackoverflow.

    - by Craig
    When one selects a Tag on stackoverflow, it is added to the end of the Url. Add a second Tag and it is add to the end of the Url after the first Tag, with a '+' delimiter. For example, http://stackoverflow.com/questions/tagged/ruby-on-rails+best-practices. How is this implemented? Is this a routing enhancement or some logic contained in the TagsController? Finally, how does one 'extract' these Tags for filtering (assuming that they are not in the params[] array)?

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  • iPhone sdk Cocoa Touch - Pass touches down from parent UIView to child UIScrollview

    - by Joe
    I have a UIView inside my xib in IB and inside that is a UIScrollview that is a small 80x80 square and dynamically loaded with 8 or so 80 x 80 thumbnail images. The UIScrollview is not clipping the images so that they extend out either side so you can swipe left and right to scroll a chosen image into the the centre, paging is on so they snap ti each image. I have researched and found this is the best and possibly only way to do this. The UIScrollview sits in a 'container' UIView for one reason, it is there to receive the touches/swipes and pass them down to it's child the UIScrollview as otherwise all touches would have to start in the small 80x80 UIScrollview area and I wan them to be anywhere along the row of images. I have seen some sample code somewhere for doing this but just can not implement it. Treat me as a noob, starting from beginning to end, how should the UIView and UIScrollview be set up in IB to allow any touches to be passed, and what code should I put into where? The UIView is set up as scroll_container and the child UIScrollview is char_scroll At the moment I have got it all working except for the touches being passed from the parent to the child, and at the moment the touches have to always start inside the UIScrollview (tiny 80x80 box in centre) when I want to be able to swipe left or right in the long 480X80 horizontal parent UIView and have this still scroll the child UIScrollview. Hope you can help and understand what I mean!

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  • Why does jruby complain about valid java_opts

    - by brad
    I have set my java min/max heap size to be the same as outlined in the Sun Docs for precise heap sizing using the following: -Xms768m -Xmx768m This works fine when I start tomcat, but if I run jruby from the command line it complains saying: Error occurred during initialization of VM Incompatible minimum and maximum heap sizes specified I read in the jruby docs about some -J-X params but it seems silly that I would need to explicitly override my normal jvm settings. The problem arises when I do a deploy. I try running jruby -S rake db:migrate on my server and it complains. Is it true that I need to explicitly override my JVM settings when running jruby? It seems as though ANY Xms/Xmx values cause jruby to complain. Update So it seems that some settings do in fact work. For instance all of these work: Xmx256m Xms256m Xmx512m Xms256m Xmx512m Xms500m But these don't: Xmx512m Xms512m Xmx512m Xms501m Xmx768m Xms512m

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  • Changing a form's action attribute in IE?

    - by Jonatan Littke
    Hey. I'm trying to set a hash value in a form's action, to keep it when the form is submitted. Firefox allows me to update the hash and redirects accordingly, but IE doesn't. I initially thought this was related to IE not allowing hash values in the action attribute at all, but it seems I can't dynamically set the action at all in IE - with a hash or not? Is that right? I'm using the following jQuery: $("#options-form").attr('action', '#' + hash); To update: <form id="options-form" action="" method="get"> (On a sidenote, this wasn't needed in Firefox, because FF appears to preserve the current hash if it was only the GET params that changed.)

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  • how does ` cat << EOF` work in bash?

    - by hasen j
    I needed to write a script to enter multi-line input to a program (psql) After a big of googling, I found the following syntax works: cat << EOF | psql ---params BEGIN; `pg_dump ----something` update table .... statement ...; END; EOF This correctly concatenates all these strings and passes the result as an input to psql. but I have no idea how/why it works, can some one please explain? I'm referring mainly to cat << EOF, I know > outputs to a file, >> appends to a file, < reads input from file. What does << exactly do? And is there a man page for it?

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  • NullPointerException with CallableStatement.getResultSet()

    - by Raj
    Hello, I have a stored proc in SQL Server 2005, which looks like the following (simplified) CREATE PROCEDURE FOO @PARAMS AS BEGIN -- STEP 1: POPULATE tmp_table DECLARE @tmp_table TABLE (...) INSERT INTO @tmp_table SELECT * FROM BAR -- STEP 2: USE @tmp_table FOR FINAL SELECT SELECT abc, pqr FROM BAZ JOIN @tmp_table ON some_criteria END When I run this proc from SQL Server Management Studio, things work fine. However, when I call the same proc from a Java program, using something like: cs = connection.prepareCall("exec proc ?,"); cs.setParam(...); rs = cs.getResultSet(); // BOOM - Null! while(rs.next()) {...} // NPE! I fail to understand why the first result set returned is NULL. Can someone explain this to me? As a workaround, if I check cs.getMoreResults() and if true, try another getResultSet() - THIS time it returns the proper result set. Any pointers please? (I'm using JTDS drivers, if it matters) Thanks, Raj

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  • Question about MySQLdb, OS X 10.5, and authentication

    - by timpone
    I'm a noob at Python and have been having problems with MySQLdb and OS X Leopard 10.5. I have a php app that is doing db access just fine with pdo but also want to access with Python. When I use the same credentials with MySQLdb as php, I get the following error: File "build/bdist.macosx-10.5-i386/egg/MySQLdb/connections.py", line 188, in __init__ _mysql_exceptions.OperationalError: (1045, "Access denied for user 'arc_db'@'localhost' (using password: YES)") The authentication piece works fine on my ubuntu server (installed via apt-get) implying that it is something specific to my OS X MySQLdb install. Looking at some postings, I thought it would be my local build of MySQLdb which seems to be problematic with OS X. But I am able to import fine: Python 2.5.1 (r251:54863, Feb 6 2009, 19:02:12) [GCC 4.0.1 (Apple Inc. build 5465)] on darwin Type "help", "copyright", "credits" or "license" for more information. >>> import MySQLdb >>> Also, wanting to create a positive, I am able to access and return results from a database tilted test_something (which presumably bypasses the MySQL's authtentication - not sure exactly how though). Trying to figure out a little more what is going on, I turn on logging for mysql and get the following (added my own comments): 100609 19:09:45 3 Connect Access denied for user 'arc_db'@'localhost' (using password: YES) //not worked 100609 19:10:02 4 Connect arc_db@localhost on arc_development //did work I'm not really sure what the 3 or 4 means but presumably a sucess or failue. So, I guess what would be the next step? Am I doing some obvious stupid python mistake (very likely)? Is there a better way for me to prove that this should / can be working? Is there any way to determine what MySQLdb is sending exactly in its authentication message to MySQL? thanks

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  • Javascript Error with DataTable jQuery plugin

    - by stevoyoung
    I am getting a JS error and what to know what it means and how to solve it. (JS noob here) Error: "tId is not defined" Line of JS with error: "if (s[i].sInstance = tId) { " More Information I am using the Data Table (http://datatables.net) jQuery plugin. I have a two tables with a class of "dataTable" loaded on a page (inside of jQuery UI tabs). The tables render as expected but I get the error above in Firebug. Attached is my Data Table config file... $(document).ready(function() { //Take from: http://datatables.net/forums/comments.php?DiscussionID=1507 // before creating a table, make sure it is not already created. // And if it is, then remove old version before new one is created var currTable = $(".dataTable"); if (currTable) { // contains the dataTables master records var s = $(document).dataTableSettings; if (s != 'undefined') { var len = s.length; for (var i=0; i < len; i++) { // if already exists, remove from the array if (s[i].sInstance = tId) { s.splice(i,1); } } } } oTable = $('.dataTable').dataTable({ "bJQueryUI": true, "sPaginationType": "full_numbers", "bFilter": false }); }); What does the error mean and how do I resolve it?

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  • Comma Seperated Values and LIKE php/mysql Troubles

    - by Jay
    The Set up This is more or less a follow up question to something I had previously posted regarding comma separated values (explode,implode). Here's the scenario which has been stomping me the last few days as I'm a noob--sorry for the lengthy post. I'm passing a variable via the url (index.php?id=variable), I then check the database to find the rows containing that variable using SELECT * FROM table WHERE column LIKE '%$variable%' I'm using the wildcards because the results are a comma separated value with the variable appearing multiple times in the database. So if we were assigning-- say schools to popular tv shows..my database is set up so that the user can assign more than one school to the tv show. IE. South Park-- fsu, nyu ,mit Archer -- harvard, nyu Index.php?id=nyu would display Sourth Park & Archer. The Problem Because I am using Like '%variable%' If I have the following: South Park--uark Archer--ua index.php?=ua Instead of just Archer showing, Southpark would also show. Which makes sense due to the wildcards...but can anyone think of a way to do this achieving the results I want?..Is there any way achieve more precise results using a comma separated value?..I'm completely stomped and will appreciate any help.

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