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  • heroku complaining about my public key created by ssh-keygen2

    - by yuri
    I am trying to access my heroku app from work (windows machine). I installed cygwin on the machine and generated ssh-key as well. However, I get the below error: C:heroku keys:add "C:\cygwin\home\4541450\[email protected]" Uploading ssh public key C:\cygwin\home\4541450\[email protected] Enter your Heroku credentials. Email: [email protected] Password: Uploading ssh public key C:\cygwin\home\c54550\[email protected] ! Contents Invalid public key / Contents Invalid public key / Fingerprint can 't be blank I generated the ssh key with the command below. ssh-keygen2 "[email protected]" -t rsa ssh-keygen is not available with this cygwin.

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  • How to implement multi relationship in MS SQL?

    - by Ethan
    I’m trying to design a database to use with ASP.net MVC application. Here is the scenario: There are three entities and users can post their comments for each of these different entities. I just wonder how just put one table for Comments and link all other entities to it. Obviously, Comments table needs 3 references (foreign key) to those tables but as you know these foreign keys can’t be null and just one of them can be filled for each row. Is there any better way than implementing three different tables for each entity’s comments? Cheers Ethan

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  • What is an SSH key?

    - by acidzombie24
    I signed up for github and notice the ssh key option which looked interesting. I originally expected something like an ssl key (name, co name, etc). After going through it i notice i only put a password and it is always myuser@comp-name (this is windows). Why? I thought it was a user/pass id and i can create separate keys for separate purpose for privacy reasons. Now i see i am required to use one to create a repository. Also i see something about a 'private key file' when looking at options. What exactly is an SSH Key and how can i create a separate user without creating a separate login in windows.

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  • How to implement multi relationship in SQL Server?

    - by Ethan
    I’m trying to design a database to use with ASP.net MVC application. Here is the scenario: There are three entities and users can post their comments for each of these different entities. I just wonder how just put one table for Comments and link all other entities to it. Obviously, Comments table needs 3 references (foreign key) to those tables but as you know these foreign keys can’t be null and just one of them can be filled for each row. Is there any better way than implementing three different tables for each entity’s comments?

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  • MySQL foreign key constraints, cascade delete

    - by Cudos
    Hello. I want to use foreign keys to keep the integrity and avoid orphans (I already use innoDB). How do I make a SQL statment that DELETE ON CASCADE? Secondly, that using DELETE ON CASCADE. E.g. if I delete a category then it would delete products related to that category even though there are other categories related to those products. The pivot table "categories_products" creates a many-to-many relationship between the two other tables. categories - id (INT) - name (VARCHAR 255) products - id - name - price categories_products - categories_id - products_id

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  • efficiently trimming postgresql tables

    - by agilefall
    I have about 10 tables with over 2 million records and one with 30 million. I would like to efficiently remove older data from each of these tables. My general algorithm is: create a temp table for each large table and populate it with newer data truncate the original tables copy tmp data back to original tables using: "insert into originaltable (select * from tmp_table)" However, the last step of copying the data back is taking longer than I'd like. I thought about deleting the original tables and making the temp tables "permanent", but I lose constraint/foreign key info. If I delete from the tables directly, it takes much longer. Given that I need to preserve all foreign keys and constraints, are there any faster ways of removing the older data? Thanks.

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  • What are the repercussions of not checking existing data when adding a foreign key?

    - by scottm
    I've inherited a database that doesn't exactly strive for data integrity. I am trying to add some foreign keys to change that, but there is data in some tables that doesn't fit the constraints. Most likely, the data won't be used again so I want to know what problems I might face by leaving it there. The other option I see is to move it into some kind of table without referential constraints, just for historical purposes. So, what are the repercussions of not checking existing data? If I create a foreign key constraint on a table and don't check existing data, will all new data inserted into the table be enforced?

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  • Error 1005 when adding a foreign key constraint on mysql table

    - by luc
    Hello, I have a problem when upgrading a django and mysql app with south. I've tried to make a sql-based upgrade with the code generated by the django sqlall command and I have a similar problem. Here is the sql code: CREATE TABLE `programmations_basissupport` ( `id` integer AUTO_INCREMENT NOT NULL PRIMARY KEY, `value` numeric(6, 0) NOT NULL ) ALTER TABLE `programmations_concert` ADD `basis_support_id` integer AFTER program_status_id; ALTER TABLE `programmations_concert` ADD CONSTRAINT `basis_support_id_refs_id_1e4ed8d7` FOREIGN KEY (`basis_support_id`) REFERENCES `programmations_basissupport` (`id`); An error is raised when adding the FK constraint: ERROR 1005 (HY000): Can't create table 'apidev_mnl.#sql-106e_632b00a' (errno: 150) Does anybody have an idea? Update: DEFAULT values where missing but even if I add the default='' in the django model, the creation of foreign keys fails. Thanks for your help

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  • Sql server Stored Procedure

    - by user177883
    I m passing a variable to stored procedure, i want the proc to make a look up to another table and get the primary key of the table and insert that value to the table. Table A: pk_id int, user varchar Table B: userKey int When i invoke sp_howto, and pass user to it, i want to it to get the pk_id from table A and insert it to table B userKey. @res = select userKey from TableA where user=@user insert into tableB (userKey) values (@res) Does this work? and what if I have many keys I want to populate like this?

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  • PHP modifying and combining array

    - by Industrial
    Hi everyone, I have a bit of an array headache going on. The function does what I want, but since I am not yet to well acquainted with PHP:s array/looping functions, so thereby my question is if there's any part of this function that could be improved from a performance-wise perspective? I tried to be as complete as possible in my descriptions in each stage of the functions which shortly described prefixes all keys in an array, fill up eventual empty/non-valid keys with '' and removes the prefixes before returning the array: $var = myFunction ( array('key1', 'key2', 'key3', '111') ); function myFunction ($keys) { $prefix = 'prefix_'; $keyCount = count($keys); // Prefix each key and remove old keys for($i=0;$i<$keyCount; $i++){ $keys[] = $prefix.$keys[$i]; unset($keys[$i]); } // output: array('prefix_key1', 'prefix_key2', 'prefix_key3', '111) // Get all keys from memcached. Only returns valid keys $items = $this->memcache->get($keys); // output: array('prefix_key1' => 'value1', 'prefix_key2' => 'value2', 'prefix_key3'=>'value3) // note: key 111 was not found in memcache. // Fill upp eventual keys that are not valid/empty from memcache $return = $items + array_fill_keys($keys, ''); // output: array('prefix_key1' => 'value1', 'prefix_key2' => 'value2', 'prefix_key3'=>'value3, 'prefix_111' => '') // Remove the prefixes for each result before returning array to application foreach ($return as $k => $v) { $expl = explode($prefix, $k); $return[$expl[1]] = $v; unset($return[$k]); } // output: array('key1' => 'value1', 'key2' => 'value2', 'key3'=>'value3, '111' => '') return $return; } Thanks a lot!

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  • Unique Keys not recognized by Entity Framework

    - by David Pfeffer
    I have two tables, Reports and Visualizations. Reports has a field, VisualizationID, which points to Visualization's field of the same name via a foreign key. It also has a unique key declared on the field. VisualizationID is not nullable. This means the relationship has to be 0..1 to 1, because every Reports record must have a unique, not null Visualizations record associated with it. The Entity Framework doesn't see it this way. I'm getting the following error: Error 113: Multiplicity is not valid in Role 'Report' in relationship 'FK_Reports_Visualizations'. Because the Dependent Role properties are not the key properties, the upper bound of the multiplicity of the Dependent Role must be *. What's the problem here? How can I make the EF recognize the proper relationship multiplicity?

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  • Using MVC2 to update an Entity Framework v4 object with foreign keys fails

    - by jbjon
    With the following simple relational database structure: An Order has one or more OrderItems, and each OrderItem has one OrderItemStatus. Entity Framework v4 is used to communicate with the database and entities have been generated from this schema. The Entities connection happens to be called EnumTestEntities in the example. The trimmed down version of the Order Repository class looks like this: public class OrderRepository { private EnumTestEntities entities = new EnumTestEntities(); // Query Methods public Order Get(int id) { return entities.Orders.SingleOrDefault(d => d.OrderID == id); } // Persistence public void Save() { entities.SaveChanges(); } } An MVC2 app uses Entity Framework models to drive the views. I'm using the EditorFor feature of MVC2 to drive the Edit view. When it comes to POSTing back any changes to the model, the following code is called: [HttpPost] public ActionResult Edit(int id, FormCollection formValues) { // Get the current Order out of the database by ID Order order = orderRepository.Get(id); var orderItems = order.OrderItems; try { // Update the Order from the values posted from the View UpdateModel(order, ""); // Without the ValueProvider suffix it does not attempt to update the order items UpdateModel(order.OrderItems, "OrderItems.OrderItems"); // All the Save() does is call SaveChanges() on the database context orderRepository.Save(); return RedirectToAction("Details", new { id = order.OrderID }); } catch (Exception e) { return View(order); // Inserted while debugging } } The second call to UpdateModel has a ValueProvider suffix which matches the auto-generated HTML input name prefixes that MVC2 has generated for the foreign key collection of OrderItems within the View. The call to SaveChanges() on the database context after updating the OrderItems collection of an Order using UpdateModel generates the following exception: "The operation failed: The relationship could not be changed because one or more of the foreign-key properties is non-nullable. When a change is made to a relationship, the related foreign-key property is set to a null value. If the foreign-key does not support null values, a new relationship must be defined, the foreign-key property must be assigned another non-null value, or the unrelated object must be deleted." When debugging through this code, I can still see that the EntityKeys are not null and seem to be the same value as they should be. This still happens when you are not changing any of the extracted Order details from the database. Also the entity connection to the database doesn't change between the act of Getting and the SaveChanges so it doesn't appear to be a Context issue either. Any ideas what might be causing this problem? I know EF4 has done work on foreign key properties but can anyone shed any light on how to use EF4 and MVC2 to make things easy to update; rather than having to populate each property manually. I had hoped the simplicity of EditorFor and DisplayFor would also extend to Controllers updating data. Thanks

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  • Nullable One To One Relationships with Integer Keys in LINQ-to-SQL

    - by Craig Walker
    I have two objects (Foo and Bar) that have a one-to-zero-or-one relationship between them. So, Foo has a nullable foreign key reference to Bar.ID and a (nullbusted) unique index to enforce the "1" side. Bar.ID is an int, and so Foo.BarID is a nullable int. The problem occurs in the LINQ-to-SQL DBML mapping of .NET types to SQL datatypes. Since int is not a nullable type in .NET, it gets wrapped in a Nullable<int>. However, this is not the same type as int, and so Visual Studio gives me this error message when I try to create the OneToOne Association between them: Cannot create an association "Bar_Foo". Properties do not have matching types: "ID", "BarID". Is there a way around this?

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  • Confused about encryption with public and private keys (which to use for encryption)

    - by jax
    I am making a licensing system when clients ask my server for a license and I send them a license if they are permitted to have one. On my current system I encrypt the license using a single private key and have the public key embedded into the client application that they use to decrypt the license. It works! Others have told me that I should be encrypting with the public key on the server and distributing the private key to clients. I have searched the web and can see that sometimes they use the private key to encrypt and other times they use the public key to encrypt. In this case what am I supposed to do?

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  • Wordpress SQL Select Multiple Meta Values / Meta Keys / Custom Fields

    - by Wes
    I am trying to modify a wordpress / MySQL function to display a little more information. I'm currently running the following query that selects the post, joins the 'postmeta' and gets the info where the meta_key = _liked function most_liked_posts($numberOf, $before, $after, $show_count) { global $wpdb; $request = "SELECT ID, post_title, meta_value FROM $wpdb->posts, $wpdb->postmeta"; $request .= " WHERE $wpdb->posts.ID = $wpdb->postmeta.post_id"; $request .= " AND post_status='publish' AND post_type='post' AND meta_key='_liked' "; $request .= " ORDER BY $wpdb->postmeta.meta_value+0 DESC LIMIT $numberOf"; $posts = $wpdb->get_results($request); foreach ($posts as $post) { $post_title = stripslashes($post->post_title); $permalink = get_permalink($post->ID); $post_count = $post->meta_value; echo $before.'<a href="' . $permalink . '" title="' . $post_title.'" rel="nofollow">' . $post_title . '</a>'; echo $show_count == '1' ? ' ('.$post_count.')' : ''; echo $after; } } The important part being: $post_count = $post->meta_value; But now I want to also grab a value that is attached to each post called wbphoto How do I specify that $post_count = _liked and $photo = wbphoto ? Here is a screen cap of my Phpmyadmin

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  • Using SDL to replace colors using SDL Color Keys

    - by Shawn B
    Hey, I am working an a simple Roguelike game, and using SDL as the display. The Graphics for the game is an image of Codepage 437, with the background being black, and the font white. Instead of using many seperate image files that are already colored, I want to use one image file, and replace the colors when it is being loaded into memory. The code to split the codepage into a sprite sheet works properly, but when attempting to print in color, everything comes out in white. I had it working the past, but somehow I broke the code when changing it from change the color at print, to change the color on load. Here is the code to load the image: SDL_Surface *Screen,*Font[2]; SDL_Rect Character[256]; Uint8 ScreenY,ScreenX; Uint16 PrintX,PrintY,ScreenSizeY,ScreenSizeX; Uint32 Color[2]; void InitDisplay() { if(SDL_Init(SDL_INIT_VIDEO) == -1) { printf("SDL Init failed\n"); return; } ScreenSizeY = 600; ScreenSizeX = 800; Screen = SDL_SetVideoMode(ScreenSizeX,ScreenSizeY,32,SDL_HWSURFACE | SDL_RESIZABLE); SDL_WM_SetCaption("Alpha",NULL); SDL_Surface *Load; Load = IMG_Load("resource/font.png"); Font[0] = SDL_DisplayFormat(Load); SDL_FreeSurface(Load); Color[0] = SDL_MapRGB(Font[0]->format,255,255,255); Color[1] = SDL_MapRGB(Font[0]->format,255,0,0); Uint8 i,j,k = 0; PrintX = 0; PrintY = 0; for(i = 0; i < 16; i++) { for(j = 0; j < 16; j++) { Character[k].x = PrintX; Character[k].y = PrintY; Character[k].w = 8; Character[k].h = 12; k++; PrintX += 8; } PrintX = 0; PrintY += 12; } PrintX = 0; PrintY = 0; for(i = 1; i < 2; i++) { Font[i] = SDL_DisplayFormat(Font[0]); SDL_SetColorKey(Font[i],SDL_SRCCOLORKEY,Color[i]); SDL_FillRect(Font[i],&Font[i]->clip_rect,Color[i]); SDL_BlitSurface(Font[0],NULL,Font[i],NULL); SDL_SetColorKey(Font[0],0,Color[0]); } } The problem is with the last for loop above. I can't figure out why it isn't working. Any help is greatly appreciated!

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  • Entity Framework, Foreign Keys and EntityKeys

    - by Greg
    I've got a problem with the Entity Framework and the ForeignKeys. I've got a table "BC_Message_Assets" which has 3 FK's (MessageId, AssetId and StatusId). I create my "MessageAsset" like this MessageAsset messageAsset = new MessageAsset(); messageAsset.MessageStatusReference.EntityKey = new EntityKey("MyEntities.MessageStatusSet", "Id", 1); messageAsset.AssetReference.EntityKey = new EntityKey("MyEntities.AssetSet", "Id", 1); messageAsset.MessageReference.EntityKey = new EntityKey("MyEntities.MessageSet", "Id", messageId); context.AddToMessageAssetSet(messageAsset); context.SaveChanges(); But I got the following exception : The INSERT statement conflicted with the FOREIGN KEY constraint \"FK_BC_Message_Assets_BC_Assets\". The conflict occurred in database \"Test\", table \"dbo.BC_Assets\", column 'Id'.\r\nThe statement has been terminated. When I look at the query, I notice that the parameter value for AssetId is "0" despite that I provided "1" to the EntityKey. Here's the generated query : exec sp_executesql N'insert [dbo].[BC_Message_Assets]([MessageId], [AssetId], [CompletionTime], [StatusId]) values (@0, @1, null, @2) ',N'@0 int,@1 int,@2 int',@0=47,@1=0,@2=1 I can't explain what happens. I hardcoded "1" in the EntityKey and I received "0" in the query ?

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  • Shortcut Keys in Java

    - by Jani
    How could I (for example) maximize the window from tray icon when a specified key combination is pressed? edit: So how can I detect for example when user presses Ctrl+M?

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  • Excel Match Bug in a sparse range with duplicate keys

    - by DangerMouse
    Data in TheRange is {1,"",1,"",1,"",1,"",2} =Match(2, TheRange, 1) returns 9 as expected =Match(1.5, TheRange, 1) returns 7 as expected =Match(1, TheRange, 1) returns 5 which is not expected Anyone come across this ? Anyone got a fix? Additionally if I use Worksheet.Function.Match in VBA I get more unexpected results.

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  • Capture keystrokes (e.g., function keys) while a messagebox is up

    - by FastAl
    We have a large WinForms app, and there is a built-in bug reporting system that can be activated during testing via the F5 Key. I am capturing the F5 key with .Net's PreFilterMessage system. This works fine on the main forms, modal dialog boxes, etc. Unfortunately, the program also displays windows messageboxes when it needs to. When there is a bug with that, e.g., wrong text in the messagebox or it shouldn't be there, the messagefilter isn't executed at all when the messagebox is up! I realize I could fix it by either rewriting my own messagebox routine, or kicking off a separate thread that polls GetAsyncKeyState and calls the error reporter from there. However I was hoping for a method that was less of a hack. Here's code that manifests the problem: Public Class Form1 Implements IMessageFilter Private Sub Form1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Click MsgBox("now, a messagebox is up!") End Sub Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load Application.AddMessageFilter(Me) End Sub Public Function PreFilterMessage(ByRef m As System.Windows.Forms.Message) _ As Boolean Implements IMessageFilter.PreFilterMessage Const VK_F5 As Int32 = &H74 Const WM_KEYDOWN As Integer = &H100 If m.Msg = WM_KEYDOWN And m.WParam.ToInt32 = VK_F5 Then ' In reality code here takes a screenshot, saves the program state, and shows a bug report interface ' IO.File.AppendAllText("c:\bugs.txt", InputBox("Describe the bug:")) End If End Function End Class Many thanks.

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  • XUL shortcut keys

    - by jaswanttak
    Hi Friend, I am developing a Firefox add-on, and for that I have used overlay, now I want that if somebody presses the key like control+j it should open my extension, and if somebody presses ctrl+space it should execute a JavaScript function. I tried this: <keyset id="mainKeyset"> <key id="keyOpen" keycode="VK_J" oncommand="document.getElementById('menuboard').showPopup(document.getElementById('mypanel'), -1, -1, 'popup', 'topleft', 'bottomleft');"/> <key id="keyExecute" modifiers="control" keycode="VK_SPACE" oncommand="javascript:myfucntion();"/> </keyset> But where it's not working what I am missing can anybody help me, please. Thanks, Jaswant

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  • Django South Foreign Keys referring to pks with Custom Fields

    - by Rory Hart
    I'm working with a legacy database which uses the MySQL big int so I setup a simple custom model field to handle this: class BigAutoField(models.AutoField): def get_internal_type(self): return "BigAutoField" def db_type(self): return 'bigint AUTO_INCREMENT' # Note this won't work with Oracle. This works fine with django south for the id/pk fields (mysql desc "| id | bigint(20) | NO | PRI | NULL | auto_increment |") but the ForeignKey fields in other models the referring fields are created as int(11) rather than bigint(20). I assume I have to add an introspection rule to the BigAutoField but there doesn't seem to be a mention of this sort of rule in the documentation (http://south.aeracode.org/docs/customfields.html). Update: Currently using Django 1.1.1 and South 0.6.2

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  • Android Soft Keyboard Keys Layout

    - by Shubh
    Hi friend, I am trying to build an Android Soft keyboard application using avail code at http://developer.android.com/resources/samples/SoftKeyboard/index.html I want to rounded key like iPhone. please suggest me. Thanks in Advance.

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  • Data Structure Behind Amazon S3s Keys (Filtering Data Structure)

    - by dimo414
    I'd like to implement a data structure similar to the lookup functionality of Amazon S3. For those of you who don't know what I'm taking about, Amazon S3 stores all files at the root, but allows you to look up groups of files by common prefixes in their names, therefore replicating the power of a directory tree without the complexity of it. The catch is, both lookup and filter operations are O(1) (or close enough that even on very large buckets - S3's disk equivalents - both operations might as well be O(1))). So in short, I'm looking for a data structure that functions like a hash map, with the added benefit of efficient (at the very least not O(n)) filtering. The best I can come up with is extending HashMap so that it also contains a (sorted) list of contents, and doing a binary search for the range that matches the prefix, and returning that set. This seems slow to me, but I can't think of any other way to do it. Does anyone know either how Amazon does it, or a better way to implement this data structure?

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