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  • Find items with belongs_to associations in Rails?

    - by dannymcc
    Hi Everyone, I have a model called Kase each "Case" is assigned to a contact person via the following code: class Kase < ActiveRecord::Base validates_presence_of :jobno has_many :notes, :order => "created_at DESC" belongs_to :company # foreign key: company_id belongs_to :person # foreign key in join table belongs_to :surveyor, :class_name => "Company", :foreign_key => "appointedsurveyor_id" belongs_to :surveyorperson, :class_name => "Person", :foreign_key => "surveyorperson_id" I was wondering if it is possible to list on the contacts page all of the kases that that person is associated with. I assume I need to use the find command within the Person model? Maybe something like the following? def index @kases = Person.Kase.find(:person_id) or am I completely misunderstanding everything again? Thanks, Danny EDIT: If I use: @kases= @person.kases I can successfully do the following: <% if @person.kases.empty? %> No Cases Found <% end %> <% if @person.kases %> This person has a case assigned to them <% end %> but how do I output the "jobref" field from the kase table for each record found?

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  • jQuery.post() issues with passing data to jQuery UI

    - by solefald
    Hello, I am trying to get jQuery.post() to run my php script and then open a jQuery UI dialog with the data that php script returns. Its supposed to come back as a form with a table and a textarea in it. It works great with alert(data); and i get a pop-up with all my data. The problem starts if i turn off alert(). Now it opens 2 dialogs. One containing only the table, without textarea, and the second one absolutely empty. What am i doing wrong here? How come all my data shows up in the alert(), but not in dialog? What do i need to do to fix it? Oh, and do i need to also include $.ajax() before the $.post()? Thank you. $.post("/path/to/script.php", { id: this.id, value: value }, function(data){ // THIS WORKS //alert(data); // THIS DOES NOT WORK $(data).dialog({ autoOpen: true, width: 400, modal: true, position: 'center', resizable: false, draggable: true, title: 'Pending Changes' }); } );

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  • Right way of making muti-site and multi-lingual website on codeigniter

    - by DR.GEWA
    Hi there. Beforehand let me thank you all !! Really guys you help a lot. When I will finish my web site and will have much time on watching how userbase is growing I will come here again and again to answer to another people questions(if I can ) So here is the problem. I made a web-site on CodeIgniter. A social network engine. Something like phpfox, classmates_com or facebook. It's right now somehow not multilingual, So the UI strings are in the view files, and next step will be move them to the language files. I want the user to have ability to change the language. So I assume that in database user will have row "lang_local" which would be by default set to en, and then to any other language he will change . So what is eating my nervs and enery is following. I will make on this engine several demographic social networks,and I would like to manage theese web-sites in centralized manner with one backend . So whenever I would like to make a new web-network, I just add the domain settings install the script in new folder and add it in database sites I see it like this on every table in database like users,comments,messages,categories ,etc I will have a row site_id , and on each query add/update/delete I add a WHERE SITE_ID=XXX and in table sites(site_id,site_name,domain_name) will have all domains , so that in backend I can filter data by website. Is this a good way? What if i will need then to be multiserver, what about load balancing? Who can tell me what would be a right,PROFESSIONAL way? My maximum user limit for a database is something like for start 10.000 in one-two year 100.000users

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  • SQL Server: preventing dirty reads in a stored procedure

    - by pcampbell
    Consider a SQL Server database and its two stored procs: *1. A proc that performs 3 important things in a transaction: Create a customer, call a sproc to perform another insert, and conditionally insert a third record with the new identity. BEGIN TRAN INSERT INTO Customer(CustName) (@CustomerName) SELECT @NewID = SCOPE_IDENTITY() EXEC CreateNewCustomerAccount @NewID, @CustomerPhoneNumber IF @InvoiceTotal > 100000 INSERT INTO PreferredCust(InvoiceTotal, CustID) VALUES (@InvoiceTotal, @NewID) COMMIT TRAN *2. A stored proc which polls the Customer table for new entries that don't have a related PreferredCust entry. The client app performs the polling by calling this stored proc every 500ms. A problem has arisen where the polling stored procedure has found an entry in the Customer table, and returned it as part of its results. The problem was that it has picked up that record, I am assuming, as part of a dirty read. The record ended up having an entry in PreferredCust later, and ended up creating a problem downstream. Question How can you explicitly prevent dirty reads by that second stored proc? The environment is SQL Server 2005 with the default configuration out of the box. No other locking hits are given in either of these stored procedures.

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  • SQL Query: How to determine "Seen during N hour" if given two DateTime time stamps?

    - by efess
    Hello all. I'm writing a statistics application based off a SQLite database. There is a table which records when users Login and Logout (SessionStart, SessionEnd DateTimes). What i'm looking for is a query that can show what hours user have been logged in, in sort of a line graph way- so between the hours of 12:00 and 1:00AM there were 60 users logged in (at any point), between the hours of 1:00 and 2:00AM there were 54 users logged in, etc... And I want to be able to run a SUM of this, which is why I can't bring the records into .NET and iterate through them that way. I've come up with a rather primative approach, a subquery for each hour of the day, however this approach has proved to be slow and slow. I need to be able to calculate this for a couple hundred thousand records in a split second.. SELECT case when (strftime('%s',datetime(date(sessionstart), '+0 hours')) > strftime('%s',sessionstart) AND strftime('%s',datetime(date(sessionstart), '+0 hours')) < strftime('%s',sessionend)) OR (strftime('%s',datetime(date(sessionstart), '+1 hours')) > strftime('%s',sessionstart) AND strftime('%s',datetime(date(sessionstart), '+1 hours')) < strftime('%s',sessionend)) OR (strftime('%s',datetime(date(sessionstart), '+0 hours')) < strftime('%s',sessionstart) AND strftime('%s',datetime(date(sessionstart), '+1 hours')) > strftime('%s',sessionend)) then 1 else 0 end as hour_zero, ... hour_one, ... hour_two, ........ hour_twentythree FROM UserSession I'm wondering what better way to determine if two DateTimes have been seen durring a particular hour (best case scenario, how many times it has crossed an hour if it was logged in multiple days, but not necessary)? The only other idea I had is have a "hour" table specific to this, and just tally up the hours the user has been seen at runtime, but I feel like this is more of a hack than the previous SQL. Any help would be greatly appreciated!

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  • Is it possible to add JPA annotation to superclass instance variables?

    - by Kristofer Borgstrom
    Hi, I am creating entities that are the same for two different tables. In order do table mappings etc. different for the two entities but only have the rest of the code in one place - an abstract superclass. The best thing would be to be able to annotate generic stuff such as column names (since the will be identical) in the super class but that does not work because JPA annotations are not inherited by child classes. Here is an example: public abstract class MyAbstractEntity { @Column(name="PROPERTY") //This will not be inherited and is therefore useless here protected String property; public String getProperty() { return this.property; } //setters, hashCode, equals etc. methods } Which I would like to inherit and only specify the child-specific stuff, like annotations: @Entity @Table(name="MY_ENTITY_TABLE") public class MyEntity extends MyAbstractEntity { //This will not work since this field does not override the super class field, thus the setters and getters break. @Column(name="PROPERTY") protected String property; } Any ideas or will I have to create fields, getters and setters in the child classes? Thanks, Kris

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  • Help with MySQL Query using CASE statement

    - by hairdresser-101
    I am trying to group a number of customers together based on their "Head Office" or "Parent" location. THis works ok except for a flaw which I didn't forsee when I was developing my system... For customers that did not have a "Parent" (standalone business) I defaulted the parent_id to 0. Therefore, my data would look like this: id parent_id customer 1 0 CustName#1 2 4 CustName#2 - Melbourne 3 4 CustName#2 - Sydney 4 0 CustName#2 (Head Office) What I want to do is Group my results together so that I have one row for CustName#1 and one row for CustName#2 BUT my problem is that there is no parent record for parent_id=0 and these rows are being excluded when using an inner join. I've tried using a case statement but that is not working either (parents are still being ignored) Any help would be greatly appreciated. Here is my query (My CASE is basically trying to get the business_name from the customer table based on the parent_id EXCEPT when the parent_id = 0, THEN just use the customer_name that is listed in the job_summary table): SELECT js.month_of_year, (CASE js.parent_id WHEN 0 THEN js.customer_name ELSE c.business_name END) as customer, SUM(js.jobs), SUM(js.total_cost), sum(js.total_sell) FROM JOB_SUMMARY js INNER JOIN customer c on js.parent_id=c.id group by js.month_of_year, (CASE c.parent_id WHEN 0 THEN js.customer_name ELSE c.business_name END) ORDER BY `customer` ASC

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  • Access reading error when using class member variable

    - by bsg
    Hi, I have a class with private member variables declared in a header file. In my constructor, I pass in some filenames and create other objects using those names. This works fine. When I try to add another member variable, however, and initialize it in the constructor, I get an access reading violation. I sent the code to someone else and it works fine on his computer. Any idea what could be wrong? Here is the offending code: The .h file: class QUERYMANAGER { INDEXCACHE *cache; URLTABLE *table; SNIPPET *snip; int* iquery[MAX_QUERY_LENGTH]; int* metapointers[MAX_QUERY_LENGTH]; int blockpointers[MAX_QUERY_LENGTH]; int docpositions[MAX_QUERY_LENGTH]; int numberdocs[MAX_QUERY_LENGTH]; int frequencies[MAX_QUERY_LENGTH]; int docarrays[MAX_QUERY_LENGTH][256]; int qsize; public: QUERYMANAGER(); QUERYMANAGER(char *indexfname, char *btfname, char *urltablefname, char *snippetfname, char *snippetbtfname); ~QUERYMANAGER(); This is the .cpp file: #include "querymanagernew.h" #include "snippet.h" using namespace std; QUERYMANAGER::QUERYMANAGER(char *indexfname, char *btfname, char *urltablefname, char *snippetfname, char *snippetbtfname){ cache = new INDEXCACHE(indexfname, btfname); table = new URLTABLE(urltablefname); snip = new SNIPPET(snippetfname, snippetbtfname); //this is where the error occurs qsize = 0; } I am totally at a loss as to what is causing this - any ideas? Thanks, bsg

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  • Referencing object's identity before submitting changes in LINQ

    - by Axarydax
    Hi, is there a way of knowing ID of identity column of record inserted via InsertOnSubmit beforehand, e.g. before calling datasource's SubmitChanges? Imagine I'm populating some kind of hierarchy in the database, but I wouldn't want to submit changes on each recursive call of each child node (e.g. if I had Directories table and Files table and am recreating my filesystem structure in the database). I'd like to do it that way, so I create a Directory object, set its name and attributes, then InsertOnSubmit it into DataContext.Directories collection, then reference Directory.ID in its child Files. Currently I need to call InsertOnSubmit to insert the 'directory' into the database and the database mapping fills its ID column. But this creates a lot of transactions and accesses to database and I imagine that if I did this inserting in a batch, the performance would be better. What I'd like to do is to somehow use Directory.ID before commiting changes, create all my File and Directory objects in advance and then do a big submit that puts all stuff into database. I'm also open to solving this problem via a stored procedure, I assume the performance would be even better if all operations would be done directly in the database.

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  • Dynamically adding radio buttons using JQUERY and then hooking up the jquery change event to the gen

    - by Barry
    i am adding collection of radio buttons to my page using jquery below $(document).ready(function() { $("#Search").click(function() { var keyword = $('#keyWord').val(); var EntityType = $("#lstEntityTypes :selected").text(); var postData = { type: EntityType, keyWord: keyword }; // alert(postData.VehicleType); $.post('/EntityLink/GetJsonEntitySearchResults', postData, function(GRdata) { var grid = '<table><tr><td>ID</td><td>Name</td><td></td>'; for (var i = 0; i < GRdata.length; i++) { grid += '<tr><td>'; grid += GRdata[i].ID; grid += '</td><td>'; grid += GRdata[i].EntityName; grid += '</td><td>'; grid += '<input type="radio" name="EntitiesRadio" value="' + GRdata[i].ID + '" />'; grid += '</td></tr>'; } grid += '</table>'; alert(grid); $("#EntitySearchResults").html(grid); $("EntitiesRadio").change(function() { alert($("EntitiesRadio :checked").val()); $("EntityID").val($("EntitiesRadio :checked").val()); alert($("EntityID").val()); $("EntityName").val($("#lstEntityTypes :selected").text()); }); }); }); // }); so when page loads there is not EntitiesRadio name range, so i tried to register the entitiesRadio change function inside the same search click method but it isnt registering. how do i get the change event to fire to update my hidden inputs

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  • mysql dynamic cursor

    - by machaa
    Here is the procedure I wrote- Cursors c1 & c2. c2 is inside c1, I tried declaring c2 below c1 (outside the c1 cursor) but then I is NOT taking the updated value :( Any suggestions to make it working would be helpful, Thanks create table t1(i int); create table t2(i int, j int); insert into t1(i) values(1), (2), (3), (4), (5); insert into t2(i, j) values(1, 6), (2, 7), (3, 8), (4, 9), (5, 10); delimiter $ CREATE PROCEDURE p1() BEGIN DECLARE I INT; DECLARE J INT; DECLARE done INT DEFAULT 0; DECLARE c1 CURSOR FOR SELECT i FROM t1; DECLARE CONTINUE HANDLER FOR NOT FOUND SET done = 1; OPEN c1; REPEAT FETCH c1 INTO I; IF NOT done THEN select I; DECLARE c2 CURSOR FOR SELECT j FROM t2 WHERE i = I; OPEN c2; REPEAT FETCH c2 into J; IF NOT done THEN SELECT J; END IF; UNTIL done END REPEAT; CLOSE c2; set done = 0; END IF; UNTIL done END REPEAT; CLOSE c1; END$ delimiter ;

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  • PHP File Upload using url parameters

    - by Arthur
    Is there a way to upload a file to server using php and the filename in a parameter (instead using a submit form), something like this: myserver/upload.php?file=c:\example.txt Im using a local server, so i dont have problems with filesize limit or upload function, and i have a code to upload file using a form <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "DTD/xhtml1-transitional.dtd"> <html> <body> <form action="<?php echo $_SERVER['PHP_SELF']; ?>" method="post" name="fileForm" enctype="multipart/form-data"> File to upload: <table> <tr><td><input name="upfile" type="file"></td></tr> <tr><td><input type="submit" name="submitBtn" value="Upload"></td></tr> </table> </form> <?php if (isset($_POST['submitBtn'])){ // Define the upload location $target_path = "c:\\"; // Create the file name with path $target_path = $target_path . basename( $_FILES['upfile']['name']); // Try to move the file from the temporay directory to the defined. if(move_uploaded_file($_FILES['upfile']['tmp_name'], $target_path)) { echo "The file ". basename( $_FILES['upfile']['name']). " has been uploaded"; } else{ echo "There was an error uploading the file, please try again!"; } } ?> </body> Thanks for the help

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  • NHibernate, legacy database, foreign keys that aren't

    - by Joe
    The project I'm working on has a legacy database with lots of information in it that's used to alter application behavior. Basically I'm stuck with something that I have to be super careful about changing. Onto my problem. In this database is a table and in this table is a column. This column contains integers and most of the pre-existing data have a value of zero for this column. The problem is that this column is in fact a foreign key reference to another entity, it was just never defined as such in the database schema. Now in my new code I defined my Fluent-NHibernate mapping to treat this column as a Reference so that I don't have to deal with entity id's directly in my code. This works fine until I come across an entity that has a value of 0 in this column. NHibernate thinks that a value of 0 is a valid reference. When my code tries to use that referenced object I get an ObjectNotFoundException as obviously there is no object in my database with an id of 0. How can I, either through mapping or some kind of convention (I'm using Fluent-nhibernate), get NHibernate to treat id's that are 0 the same as if it was NULL?

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  • DroDownlist in DataGrid produces Error

    - by S Nash
    I have a DataGrid and everytime I change value of it's embeded dropdwonlist I get: "System.Web.HttpException: The IListSource does not contain any data sources." I have a data grid which loads fine: Name column is editable. I have a dropdownlist these : DataDataGrid gets its value from a table. (Select Name, Address From Persons) Dropdown list also gets list of names from the same table. So DataGrid and dropdownlist are bound to 2 different datasets. Here is my code for dataGrid" <Columns> <ASP:ButtonColumn Text="Delete" CommandName="Delete"></ASP:ButtonColumn> <asp:EditCommandColumn ButtonType="LinkButton" UpdateText="Update" CancelText="Cancel" EditText="Edit"></asp:EditCommandColumn> <ASP:TemplateColumn HeaderText="Name" SortExpression="FY" HeaderStyle-HorizontalAlign="center" HeaderStyle-Wrap="True"> <ItemStyle Wrap="false" HorizontalAlign="left" /> <ItemTemplate> <ASP:Label ID="Name" Text='<%# DataBinder.Eval(Container.DataItem, "Name") %>' runat="server"/> </ItemTemplate> <EditItemTemplate> <ASP:DropDownList id="ddlName" cssClass="DropDownList" runat="server" datasource="<%#allNames%>" DataTextField= "Name" DataValueField="ID" Defaultvalue='<%# DataBinder.Eval(Container.DataItem, "ID") %>' OnPreRender="SetDefaultListItem" accessKey="I" AutoPostBack="true" /> </EditItemTemplate> </ASP:TemplateColumn> <asp:BoundColumn DataField="Address" ReadOnly="True" HeaderText="Address"></asp:BoundColumn> </Columns> Error happens here : dg.DataSource = ds dg.DataBind() Any ideas how to solve this issues? All I want is a DataGrid with a editable column ,which can be edited by choosing one of the value of in a dropdownlist.

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  • What is the performance penalty of XML data type in SQL Server when compared to NVARCHAR(MAX)?

    - by Piotr Owsiak
    I have a DB that is going to keep log entries. One of the columns in the log table contains serialized (to XML) objects and a guy on my team proposed to go with XML data type rather than NVARCHAR(MAX). This table will have logs kept "forever" (archiving some very old entries may be considered in the future). I'm a little worried about the CPU overhead, but I'm even more worried that DB can grow faster (FoxyBOA from the referenced question got 70% bigger DB when using XML). I have read this question http://stackoverflow.com/questions/514827/microsoft-sql-server-2005-2008-xml-vs-text-varchar-data-type and it gave me some ideas but I am particulairly interrested in clarification on whether the DB size increases or decreases. Can you please share your insight/experiences in that matter. BTW. I don't currently have any need to depend on XML features within SQL Server (there's nearly zero advantage to me in the specific case). Ocasionally log entries will be extracted, but I prefer to handle the XML using .NET (either by writing a small client or using a function defined in a .NET assembly).

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  • NSArrayController not working with NSMutableDictionary for NSTableView

    - by Miraaj
    Hi all, I am trying to display content in NSTableView using NSMutableArrayController of NSMutableDictionary records. I followed steps written below: In application delegate class, I created an NSMutableArray object with name 'geniuses' and stored some NSMutableDictionary objects with keys: 'geniusName' and 'domain'. I took an NSArrayController object in IB, binded its controller content property to application delegate class, and set its model key path to 'geniuses'. In attribute inspector pane set mode as class and class name as NSMutableDictionary. Added keys: 'geniusName' and 'domain' to it. In IB I took a table view object. Binded its content property to array controller, controller key path set as arranged objects. Binded value property of its first column to array controller, controller key path set as arranged objects, model key path set as 'geniusName'. Binded value property of its second column to array controller, controller key path set as arranged objects, model key path set as 'geniusName'. After following these steps when I tried to build and run the project I found un-populated table view. You can find my code here. Can anyone suggest me where I may be wrong? Thanks, Miraaj

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  • [EF 4 POCO] Problem with INSERT...

    - by Darmak
    Hi all, I'm so frustrated because of this problem, you have no idea... I have 2 classes: Post and Comment. I use EF 4 POCO support, I don't have foreign key columns in my .edmx model (Comment class doesn't have PostID property, but has Post property) class Comment { public Post post { get; set; } // ... } class Post { public virtual ICollection<Comment> Comments { get; set; } // ... } Can someone tell me why the code below doesn't work? I want to create a new comment for a post: Comment comm = context.CreateObject<Comment>(); Post post = context.Posts.Where(p => p.Slug == "something").SingleOrDefault(); // post != null, so don't worry, be happy // here I set all other comm properties and... comm.Post = post; context.AddObject("Comments", comm); // Exception here context.SaveChanges(); The Exception is: Cannot insert the value NULL into column 'PostID', table 'Blog.Comments'; column does not allow nulls. INSERT fails. ... this 'PostID' column is of course a foreign key to the Posts table. Any help will be appreciated!

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  • Jquery Drag-Drop (Getting element being dropped into)

    - by Ryan
    I am trying to detect which cell an object is being dropped into. <table> <tr> <td class="weekday">Sun</td> <td class="weekday">Mon</td> <td class="weekday">Tue</td> <td class="weekday">Wed</td> <td class="weekday">Thu</td> <td class="weekday">Fri</td> <td class="weekday">Sat</td> </tr> <tr> <td class="droppable">&nbsp;</td> <td class="droppable">&nbsp;</td> <td class="droppable">&nbsp;</td> <td class="droppable">&nbsp;</td> <td class="droppable">&nbsp;</td> <td class="droppable">&nbsp;</td> <td class="droppable">&nbsp;</td> </tr> </table> <div class="draggable">Drag Me</div> on drop, how do i determine which day the div was dropped into. thanks for any help.

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  • CakePHP - hasMany not fetching?

    - by Paolo Bergantino
    Maybe I am just having a slow day, but for the life of me I can't figure out why this is happening. I haven't done CakePHP in a while and I am trying to use the 1.3 version, but this doesn't seem to be working... I have two models: area.php <?php class Area extends AppModel { var $name = 'Area'; var $useTable = 'OR_AREA'; var $primaryKey = 'A_ID'; var $belongsTo = array( 'Building' => array( 'className' => 'Building', 'foreignKey' => 'FK_B_ID', ), 'Facility' => array( 'className' => 'Facility', 'foreignKey' => 'FK_F_ID', ), 'System' => array( 'className' => 'System', 'foreignKey' => 'FK_S_ID', ) ); } ?> building.php <?php class Building extends AppModel { var $name = 'Building'; var $useTable = 'OR_BLDG'; var $primaryKey = 'B_ID'; var $hasMany = array( 'Area' => array( 'className' => 'Area', 'foreignKey' => 'FK_B_ID', ) ); } ?> OR_AREA has a column titled FK_B_ID that refers to the B_ID. If I run something like: $this->Building->find('all', array('recursive' => 2)); I get empty [Area] arrays for all the Buildings even though there are plenty of Areas in the OR_AREA table that are associated to buildings. Not only that, the Query Table doesn't even show CakePHP attempted to find anything but all the records in OR_BLDG. All the more puzzling, if I do: $this->Area->find('all'); I get all the Areas and the [Building] arrays are populated when appropriate. What am I missing?

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  • [ZF & jQuery] How can I access an URL using AJAX, receive no response, but just manipulate HTML?

    - by rasouza
    I don't know if it's better used with AJAX (tell me, otherwise) but here is my problem: Assuming i'm using Zend Framework, I have a table with several registries from a database with a delete button on each row. That's like this [...] <tbody> <?php foreach ($row as $reg) { ?> <tr <?php if ($reg['value'] < 0) { echo "class='error'"; } ?>> <td><?php echo $reg['creditor'] ?></td> <td><?php echo $reg['debtor'] ?></td> <td><?php echo $reg['reason'] ?></td> <td>R$ <?php echo number_format(abs($reg['value']), 2, ',', ' ')?></td> <td><a href="#" id="<?php echo $reg['id']; ?>" class="delete"><img src="http://192.168.0.102/libraries/css/blueprint/plugins/buttons/icons/cross.png" alt=""/></a></td> </tr> <?php } ?> </tbody> [...] I would like to .fadeOut() and delete (through the link history/delete/id/ROW_ID ) a table row when clicked in the respective delete button. My deleteAction() has no render. It really shouldn't have one, it just deletes a row in the database. Still, how can I make it happen? I tried: // TR Fading when deleted $('.delete') .click(function() { $.ajax({ type: 'GET', url: 'history/delete/id/'+$(this).attr('id'), success: function() { $(this).parent().parent().fadeOut(); } }); return false; }); without success

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  • Core Data, Bindings, value transformers : crash when saving

    - by Gael
    Hi, I am trying to store a PNG image in a core data store backed by an sqlite database. Since I intend to use this database on an iPhone I can't store NSImage objects directly. I wanted to use bindings and an NSValueTransformer subclass to handle the transcoding from the NSImage (obtained by an Image well on my GUI) to an NSData containing the PNG binary representation of the image. I wrote the following code for the ValueTransformer : + (Class)transformedValueClass { return [NSImage class]; } + (BOOL)allowsReverseTransformation { return YES; } - (id)transformedValue:(id)value { if (value == nil) return nil; return [[[NSImage alloc] initWithData:value] autorelease]; } - (id)reverseTransformedValue:(id)value { if (value == nil) return nil; if(![value isKindOfClass:[NSImage class]]) { NSLog(@"Type mismatch. Expecting NSImage"); } NSBitmapImageRep *bits = [[value representations] objectAtIndex: 0]; NSData *data = [bits representationUsingType:NSPNGFileType properties:nil]; return data; } The model has a transformable property configured with this NSValueTransformer. In Interface Builder a table column and an image well are both bound to this property and both have the proper value transformer name (an image dropped in the image well shows up in the table column). The transformer is registered and called every time an image is added or a row is reloaded (checked with NSLog() calls). The problem arises when I am trying to save the managed objects. The console output shows the error message : [NSImage length]: unrecognized selector sent to instance 0x1004933a0 It seems like core data is using the value transformer to obtain the NSImage back from the NSData and then tries to save the NSImage instead of the NSData. There are probably workarounds such as the one presented in this post but I would really like to understand why my approach is flawn. Thanks in advance for your ideas and explanations.

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  • Full Text Search in MSSQL2008 shows wrong display_item for Thai language

    - by ensecoz
    I am working with MSSQL2008. My task is to investigate the issue where FTS cannot find the right result for Thai. First, I have the table which enables the FTS on the column 'ItemName' which is nvarchar. The Catalog is created with the Thai Language. Note that the Thai language is one of the languages that doesn't separate the word by spaces, so '????' '???' '????' are written like this in a sentence: '???????????' In the table, there are many rows that include the word (????); for example row#1 (ItemName: '???????????') On the webpage, I try to search for '????' but SQLServer cannot find it. So I try to investigate it by trying the following query in SQLServer: select * from sys.dm_fts_parser(N'"???????????"', 1054, 0, 0) ...to see how the words are broken. The first one is the text to be broken. The second parameter is to specify that we're using Thai (WorkBreaker, so on). Here is the result: row#1 (display_item: '????', source_item: '???????????') row#2 (display_item: '????', source_item: '???????????') row#3 (display_item: '??', source_item: '???????????') Notice that the first and second row display the wrong display_item '?' in the '????' isn't even Thai characters. '?' in '????' is not a Thai character either. So the question is where did those alien characters come from? I guess this why I cannot search for '????' because the word breaker is broken and keeping the wrong character in the indexes. Please help!

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  • How to reuse results with a schema for end of day stock-data

    - by Vishalrix
    I am creating a database schema to be used for technical analysis like top-volume gainers, top-price gainers etc.I have checked answers to questions here, like the design question. Having taken the hint from boe100 's answer there I have a schema modeled pretty much on it, thusly: Symbol - char 6 //primary Date - date //primary Open - decimal 18, 4 High - decimal 18, 4 Low - decimal 18, 4 Close - decimal 18, 4 Volume - int Right now this table containing End Of Day( EOD) data will be about 3 million rows for 3 years. Later when I get/need more data it could be 20 million rows. The front end will be asking requests like "give me the top price gainers on date X over Y days". That request is one of the simpler ones, and as such is not too costly, time wise, I assume. But a request like " give me top volume gainers for the last 10 days, with the previous 100 days acting as baseline", could prove 10-100 times costlier. The result of such a request would be a float which signifies how many times the volume as grown etc. One option I have is adding a column for each such result. And if the user asks for volume gain in 10 days over 20 days, that would require another table. The total such tables could easily cross 100, specially if I start using other results as tables, like MACD-10, MACD-100. each of which will require its own column. Is this a feasible solution? Another option being that I keep the result in cached html files and present them to the user. I dont have much experience in web-development, so to me it looks messy; but I could be wrong ( ofc!) . Is that a option too? Let me add that I am/will be using mod_perl to present the response to the user. With much of the work on mysql database being done using perl. I would like to have a response time of 1-2 seconds.

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  • Problems setting up AuthLogic

    - by sscirrus
    Hi all, I'm trying to set up a simple login using AuthLogic into my User table. Every time I try, the login fails and I don't know why. I'm sure this is a simple error but I've been hitting a brick wall with it for a while. #user_sessions_controller def create @user_session = UserSession.new(params[:user_session]) if @user_session.save flash[:notice] = "Login successful!" else flash[:notice] = "We couldn't log you in. Please try again!" redirect_to :controller => "index", :action => "index" end end #_user_login.html.erb (this is the partial from my index page where Users log in) <% form_tag user_session_path do %> <p><label for="login">Login:</label> <%= text_field_tag "login", nil, :class => "inputBox", :id => "login", </p> <p><label for="password">Password: </label> <%= password_field_tag "password", nil, :class => "inputBox", :id => "password", </p> <p><%= submit_tag "submit", :class => "submit" %></p> <% end %> I had Faker generate some data for my user table but I cannot log in! Every time I try it just redirects to index. Where am I going wrong? Thanks everybody.

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  • Dumping an ADODB recordset to XML, then back to a recordset, then saving to the db

    - by Mark Biek
    I've created an XML file using the .Save() method of an ADODB recordset in the following manner. dim res dim objXML: Set objXML = Server.CreateObject("MSXML2.DOMDocument") 'This returns an ADODB recordset set res = ExecuteReader("SELECT * from some_table) With res Call .Save(objXML, 1) Call .Close() End With Set res = nothing Let's assume that the XML generated above then gets saved to a file. I'm able to read the XML back into a recordset like this: dim res : set res = Server.CreateObject("ADODB.recordset") res.open server.mappath("/admin/tbl_some_table.xml") And I can loop over the records without any problem. However what I really want to do is save all of the data in res to a table in a completely different database. We can assume that some_table already exists in this other database and has the exact same structure as the table I originally queried to make the XML. I started by creating a new recordset and using AddNew to add all of the rows from res to the new recordset dim outRes : set outRes = Server.CreateObject("ADODB.recordset") dim outConn : set outConn = Server.CreateObject("ADODB.Connection") dim testConnStr : testConnStr = "DRIVER={SQL Server};SERVER=dev-windows\sql2000;UID=myuser;PWD=mypass;DATABASE=Testing" outConn.open testConnStr outRes.activeconnection = outConn outRes.cursortype = adOpenDynamic outRes.locktype = adLockOptimistic outRes.source = "product_accessories" outRes.open while not res.eof outRes.addnew for i=0 to res.fields.count-1 outRes(res.fields(i).name) = res(res.fields(i).name) next outRes.movefirst res.movenext wend outRes.updatebatch But this bombs the first time I try to assign the value from res to outRes. Microsoft OLE DB Provider for ODBC Drivers error '80040e21' Multiple-step OLE DB operation generated errors. Check each OLE DB status value, if available. No work was done. Can someone tell me what I'm doing wrong or suggest a better way for me to copy the data loaded from XML to a different database?

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