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  • How to override the attr_protected?

    - by KandadaBoggu
    I have STI implementation as follows: class Automobile < ActiveRecord::Base end class Car < Automobile end class Truck < Automobile end class User < ActiveRecord::Base has_many :automobiles accepts_nested_attributes_for :automobiles end I am creating a list of automobiles for a user. For each automobile, the UI sets the type field and the properties associated with the automobile.While form submission, the type field is ignored as it is a protected attribute. How do I work around this issue? Is there a declarative way to unprotect a protected attribute?

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  • Two parallel line segments intersection

    - by Judarkness
    I know there are many algorithms to verify whether two line segments are intersected. But once they encountered parallel condition, they just tell the user a big "No" and pretend there is no overlap, share end point, or end point collusion. I know I can can calculate the distance between 2 lines segments. If the distance is 0, check the end points located in the other line segments or not. And this means I have to use a lot of if else and && || conditions. This is not difficult, but my question is "Is there a trick( or mathematics) method to calculate this special parallel case?"

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  • Drawing rubber band line during user drag

    - by Pete W
    In my iPhone app, I would like the user to be able to "connect" two of my views by: 1) starting a drag in View A 2) as they drag towards View B, a straight line with one end in View A and the other end under at the current drag point, animates in a rubber-band fashion 3) when/if they release in View B, the line is then shown between the two views I've seen examples of dragging and dropping views, and other examples of animations, but I haven't seen one that is a simple example of this kind of user-directed animation. Any pointers towards examples or the specific docs I should be looking at would be appreciated. If this turns out to be trivial - my apologies. Although I've done quite a bit of development, I'm just getting started in the iPhone SDK and Core Graphics.

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  • getting code in new line

    - by Man Behind
    I have several divs one of which is as below <div id="drawarea"> <img class="draggable ui-droppable ui-draggable ui-draggable-dragging" id="image1" src="user_2/1323384165.jpg" style="height: 40%; width: 50%; position: absolute; left: 0%; top: 0%;"> <label id="first">This is content of the div</label> <input type="button" value="GO"/> </div> I am using jquerys below function to get the html inside the div and put in a text area html = $('#drawarea').html(); $('#codearea').text(html); the problem is that i am getting all the tags in same line i want to get one element code in one then others on other line so thats its easy to read.

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  • ActiveRecord Validations for Models with has_many, belongs_to associations and STI

    - by keruilin
    I have four models: User Award Badge GameWeek The associations are as follows: User has many awards. Award belongs to user. Badge has many awards. Award belongs to badge. User has many game_weeks. GameWeek belongs to user. GameWeek has many awards. Award belongs to game_week. Thus, user_id, badge_id and game_week_id are foreign keys in awards table. Badge implements an STI model. Let's just say it has the following subclasses: BadgeA and BadgeB. Some rules to note: The game_week_id fk can be nil for BadgeA, but can't be nil for BadgeB. Here are my questions: For BadgeA, how do I write a validation that it can only be awarded one time? That is, the user can't have more than one -- ever. For BadgeB, how do I write a validation that it can only be awarded one time per game week?

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  • sed find pattern on line with another pattern

    - by user2962390
    I am trying to extract text from a file between a '<' and a '', but only on a line starting with another specific pattern. So in a file that looks like: XXX Something here XXX Something more here XXX <\Lines like this are a problem ZZZ something <\This is the text I need XXX Don't need any of this I would like to print only the "<\This is the text I need". If I do sed -n '/^ZZZ/p' FILENAME it pulls the correct lines I need to look at, but obviously prints the whole line. sed -n '/</,//p' FILENAME prints way too much. I have looked into grouping and tried sed -n '/^ZZZ/{/</,//} FILENAME but this doesn't seem to work at all. Any suggestions? They will be much appreciated. (Apologies for formatting, never posted on here before)

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  • My Delphi 7 application halts on Application.Initialize and does not return to next line

    - by m-abdi
    I have created an application on Delphi 7. my app had running fine since yesterday. I don't know what's happened yesterday which cause my application halts on Application.Initialize line in source code and does not return to next line when i trace the program. I can't run the created executable file from widows niether while the generated file does run on another machine correctly. here is the code where the compiler stops on it: program Info_Kiosk; uses SysUtils, Forms, ... (some other units) ; {$R *.res} begin Application.Initialize; Application.CreateForm(Tfrm_Main, frm_Main); any help would be appreciated

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  • How to specify a password on the command line of an SSIS package run

    - by Vaccano
    I am having an issue where I need to be able to specify the password when I run my packages. This article http://support.microsoft.com/kb/918760 says: Method 3: Set the SSIS Package ProtectionLevel property to EncryptSensitiveWithPassword Change the SSIS Package ProtectionLevel property to EncryptSensitiveWithPassword. This setting uses a password for encryption. You can then modify the SQL Server Agent job step command line to include this password. That all sounds well and good. But where and how to you specify the password? Here is an example of my current command line: /FILE "C:\Program Files\Microsoft SQL Server\100\DTS\Packages \MainSSISPackage.dtsx" /CONFIGFILE "C:\Program Files \Microsoft SQL Server\100\DTS\Packages\DataConfig.dtsConfig" /CHECKPOINTING OFF /REPORTING E

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  • WPF - Weird results with DataGrid - extra line for editing entries

    - by Jim Beam
    Working with WPF and C#. I have a page with a datagrid that lists a series of objects with List as the DataContext. I recently had it working in the code behind and the Datagrid would show the extra line at the bottom of the datagrid for new entries. Now, I have moved the exact same code to its own library project. The data still appears but the extra line for entry does not and users cannot add a new record. I have already tried using grid.CanUserAddNew = true; but that does not solve it. So, it must be something in the List object - it's the exact same code as before, only pulling from a library. Help.

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  • [Android] Weird black line on top of list view

    - by CaseyB
    I am creating a layout with a ListView and at the very top of the list there is this weird black line that I can't seem to figure out how to get rid of! It's part of the ListView because it moves up and down as I size the ListView. Has anyone ran into this before? I couldn't get DDMS to take a screen capture for some reason so I took a picture of the screen with my G1, so please forgive the quality! As you can see the line is there at the top of the fade out in the list.

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  • jQuery selectable with a single element deselected by clicking

    - by BerggreenDK
    I would like to be able to deselect a selected item by clicking or using lasso, just like in Photoshop where I keep another key down to "deselect" parts of an existing selection. Is this possible? As I understand "jQuery UI selectable". There is only "single click" with or without CTRL to add multiple and then the quick lasso. I am trying to see how it would be possible to deselect, one or two elements of a whole selection by clicking them off again. Eg, you drag the lasso and get 30 elements but finds that 1 does not need to be part of this selection. You click it and deselects it. So something that reacts to the existing selection and removes the choosen element. Or with the lasso, you make a lasso selection. Gets 30 elements. Then you draw a new lasso, this time starting on an already selected element, now it default deselects and so does the rest of the group marked. I believe this should be customizable behaviour for the jQueryUI if anything. But is the "single deselect" possible with a simple jQuery hack or will it demand a lot of code?

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  • Delete the first line that matches a pattern

    - by gioele
    How can I use sed to delete only the first line that contains a certain pattern? For example, I want to remove the first line matching FAA from this document: 1. foo bar quuz 2. foo FAA bar (this should go) 3. quuz quuz FAA (this should remain) 4. quuz FAA bar (this should also remain) The result should be 1. foo bar quuz 3. quuz quuz FAA (this should remain) 4. quuz FAA bar (this should also remain) A solution for POSIX sed would be greatly appreciated, GNU sed is OK.

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  • Load a single symbol from a LaTeX package

    - by Martijn
    When using the MnSymbol package, pdflatex gives two font warnings: LaTeX Font Warning: Encoding 'OMS' has changed to 'U' for symbol font (Font) 'symbols' in the math version 'normal' on input line 120. LaTeX Font Info: Overwriting symbol font 'symbols' in version 'normal' (Font) OMS/cmsy/m/n --> U/MnSymbolF/m/n on input line 120. It turns out that this is probably due to a clash with the AMSSymb package. Since I need just a few symbols from the package: is there a way to load one symbol from a package, in stead of all?

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  • C - 3rd line on a txt

    - by Pedro
    Hi....I have on the txt file this: Hello Experience 3 Bad Hi want to scanf the 3rd line; i'm doing this: FILE *fp; int number; fp=fopen("test.txt","r"); if(fp==NULL){ printf("Error\n"); } while(!feof(fp)){ for(i=0;i<=3;i++){ if(i==3){ fscnaf(number,fp); prinf("string in the 3rd line is %s\n",number); } } } system("PAUSE"); } I need to use the fscanf, because i will need it, the number is the size of students in a school... Something is wrong, but i don't know what is...please help me...

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  • scaleX scaleY increasing left, top margin, and line spacing

    - by Mark
    If you have Text with a font that is 72 point for example (and scaleX scaleY = 1) you can achieve the same size with a font size of 12 and scaleX,scaleY = 6. For reasons that would take too long to explain I am applying a large scale factor as in the latter example. The problem is, even though the text is the same size, the line spacing and left and top margins have all been increased but I want them to be the same size as well. As far as the line spacing, I discovered that TextFormat.leading was being automatically increased when scaleX, scaleY was greater than 1, so I just had to reset TextFormat.leading back to 0. That leaves the left and top margins, and I have no idea how those are being increased. I tried TextFormat.blockIndent=0 and TextFormat.leftMargin=0 (and also ignorePadding=true) and it had no effect. And have no clue how to reset the top margin either to its orginal size, in case anyone has an idea for all these.

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  • Selecting More Than 1 Table in A Single Query

    - by Kamran
    I have 5 Tables in MS Access as Logs [Title, ID, Date, Author] Tape [Title, ID, Date, Author] Maps [Title, ID, Date, Author] VCDs [Title, ID, Date, Author] Book [Title, ID, Date, Author] I tried my level best through this code SELECT Logs.[Author], Tape.[Author], Maps.[Author], VCDs.[Author], Book.[Author] FROM Logs , Tape , Maps , VCDs, Book WHERE ((([Author] & " " & [Author] & " " & [Author] & " " & [Author]& " " & [Author]) Like "*" & [Type the Title or Any Part of the Title and Press Ok] & "*")); I want to select all of these fields in a single query. Suppose there is Adam as author of works in all tables. So when i put Adam in search box it should result from all tables. I know this can be done by having single table or renaming fields names but that's not required. Please help.

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  • Actionscript - combining AS2 assets into a single SWF

    - by Justin Bachorik
    Hi guys, I have a flash project that I'm trying to export as a single SWF. There's a main SWF file that loads about 6 other SWFs, and both the main and the child SWFs reference other external assets (images, sounds, etc). I'd like to package everything as a single .swf file so I don't have to tote the other assets around with the .swf. All the coding is done in the timeline, but the assets haven't been imported into the Flash Authoring environment and I don't have time to do that right now (there are too many references to them everywhere). I'm hoping that there's just an option I'm missing that allows this sort of packaged export, but I haven't found anything like that. I don't have access to Flex or mxmlc (and as the AS is timeline-based, they wouldn't necessarily help me). Any thoughts? Thanks! PS...if there's no way of doing exactly what I'm saying, I could deal with having all the assets in a "assets" folder or something like that, so I'd just be toting around main.swf and an assets folder. The problem here is that all the references to the assets assume that they're in the same folder as the main.swf file, so everything's assumed to be local...is there a way to change the scope of all external references in Flash (so, for example, all local references in the code are actually searched in /assets)?

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  • Set plugin’s version on the command line in maven 2

    - by larry cai
    I generate default quickstart maven example, and type mvn checkstyle:checkstyle, it always try to use the lastest SNAPSHOT version, probably it is wrong in my nexus server, but How can I set plugin's version on the command line in maven2, like 2.5 for checkstyle instead of 2.6-SNAPSHOT C:\HelloWorld>mvn checkstyle:checkstyle [INFO] Scanning for projects... [INFO] Searching repository for plugin with prefix: 'checkstyle'. [INFO] ------------------------------------------------------------------------ [ERROR] BUILD ERROR [INFO] ------------------------------------------------------------------------ [INFO] Error building POM (may not be this project's POM). Project ID: org.apache.maven.plugins:maven-checkstyle-plugin Reason: Error getting POM for 'org.apache.maven.plugins:maven-checkstyle-plugin' from the repository: Failed to resolve artifact, possibly due to a repository list that is not appropriately equipped for this artifact's metadata. org.apache.maven.plugins:maven-checkstyle-plugin:pom:2.6-SNAPSHOT from the specified remote repositories: nexus (http://localhost:9081/nexus/content/groups/public) for project org.apache.maven.plugins:maven-checkstyle-plugin I guess it could be "mvn checkstyle:2.5:checkstyle", unfortunately it is not. Surely if I set build dependance in pom.xml, it will work, but I want to see how command line can works

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  • Line breaks in XML are ignored by the SAX Parser

    - by Siddharth Iyer
    I am parsing an XML with some CData that contains line breaks. The parser ignores these line breaks. I am trying to figure out a way to catch these newlines in the characters() method and replace them with a break tag for display purposes. I have tried almost everything under the sun and have been scouring stackoverflow for the past 3 hours. I tried every combination of replacing "\n", "\r\n" and so on with a break tag in the characters() method of the parser. I am absolutely helpless right about now.... and would sincerely appreciate any help I can get. Thanks!!!

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  • Draw arrow on line

    - by Pete
    Hi, I have this code: CGPoint arrowMiddle = CGPointMake((arrowOne.x + arrowTo.x)/2, (arrowOne.y + arrowTo.y)/2); CGPoint arrowLeft = CGPointMake(arrowMiddle.x-40, arrowMiddle.y); CGPoint arrowRight = CGPointMake(arrowMiddle.x, arrowMiddle.y + 40); [arrowPath addLineToScreenPoint:arrowLeft]; [arrowPath addLineToScreenPoint:arrowMiddle]; [arrowPath addLineToScreenPoint:arrowRight]; [[mapContents overlay] addSublayer:arrowPath]; [arrowPath release]; with this output: http://yfrog.com/edschermafbeelding2010032p What have i to add to get the left and right the at same degree of the line + 30°. If someone has the algorithm of drawing an arrow on a line, pleas give it. It doesn't matter what programming language it is... Thanks

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  • C# character counter when writing to new line

    - by Mike
    Basically i'm trying to read a really big text file and when the charecters of the line reach X amount write to a new line, but i can't seem to get the charecter count to work. Any help is appricated! using (FileStream fs = new FileStream(betaFilePath,FileMode.Open)) using (StreamReader rdr = new StreamReader(fs)) { while (!rdr.EndOfStream) { string betaFileLine = rdr.ReadLine(); int stringline = 0; if (betaFileLine.Contains("þTEMP")) { //sb.AppendLine(@"C:\chawkster\workfiles\New Folder\GEL_ALL_PRODUCTS_CONCORD2.DAT"); string checkline = betaFileLine.Length.ToString(); foreach (string cl in checkline) { stringline++; File.AppendAllText(@"C:\chawkster\workfiles\New Folder\GEL_ALL_PRODUCTS_CONCORD3.DAT", cl); if(stringline == 1200) { File.AppendAllText(@"C:\chawkster\workfiles\New Folder\GEL_ALL_PRODUCTS_CONCORD3.DAT","\n"); stringline = 0; } } } } foreach (string cl in checkline) Error 1 Cannot convert type 'char' to 'string'

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