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  • Dynamic class_name for has_many relations

    - by vooD
    I'm trying to make has_many relation with dynamic class_name attribute class Category < ActiveRecord::Base has_many :ads, :class_name => ( lambda { return self.item_type } ) end or class Category < ActiveRecord::Base has_many :ads, :class_name => self.item_type end But i got errors: can't convert Proc into String or undefined method `item_type' for #<Class:0xb62c6c88> Thank you for any help!

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  • jquery adding required to a dropdownbox [SOLVED]

    - by Crays
    Hi i would like to know how do i add a required attribute to a dropdownbox? I've search numerous ways but none worked, here's my code <script> $(document).ready(function(){ $('.orderingmenu .burgers').change(function(){ var selectVal= $(this).val(); if(selectVal != 'none'){ $(this).next().attr('required', true); } }); }); </script> i am really out of idea on how to do this, i tested the selectors and they're working fine, but it just doesn't seem to add in the required attribute to that select field =/ any help please? what i have tried is $(this).next().prop('required', true); $(this).next().attr('required', 'true'); $(this).next().attr('required', ''); $(this).next().prop('required'); none have worked =/ EDIT the HTML <div class="orderingmenu" style="margin-bottom: 0.5%;"> <select name="burgerlist" class="burgers" style="width: 35%; float: left; font-size: 12px;"> <option selected="selected" value="none">NONE</option> <option value="A">A</option> </select> <select name="option" id="option" class="setornot" style="width: 30%; font-size: 12px;"> <option selected="selected" value="none">NONE</option> <option value="ALA CARTE">ALA CARTE</option> <option value="SET">SET</option> </select> <input type="text" placeholder="ANY REMARKS?" name="remarks" style="width: 30%; float: right; font-size: 12px;"> </div> i had it looped with a php script, but basically what i wanted to do is so that if there is any selection other than 'none', the other selection is required. EDIT 2 found out the problem was that i had the value for none!

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  • python 3 self class dict

    - by Jjang
    I am trying to create my own class of dictionary in python 3 which has a field of dict variable and setitem and getitem methods. Though, it doesnt work for some reason. Tried to look around but couldn't find the answer. class myDictionary: def __init(self): self.myDic={} def __setitem__(self, key, value): self.myDic[key]=value I'm getting: 'myDictionary' object has no attribute 'myDic' Any ideas? :)

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  • DisplayFor ignores metadata

    - by Juvaly
    For my Contact class, the property EmailAddress is marked with the [DataType(DataType.EmailAddress)] attribute. In my view, using Html.Display("EmailAddress") and Html.DisplayFor(c => c.EmailAddress) yields different results. The former outputs a mailto: link, which is the expected behavior, while the latter simply outputs the email address as plain text. My question is why the different behavior, I expected these two methods to have the same output.

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  • Creating instance of interface in C#

    - by Max
    I'm working with MS Excel interop in C# and I don't understand how this particular line of code works: var excel = new Microsoft.Office.Interop.Excel.Application(); where Microsoft.Office.Interop.Excel.Application is an INTERFACE defined as: [Guid("000208D5-0000-0000-C000-000000000046")] [CoClass(typeof(ApplicationClass))] public interface Application : _Application, AppEvents_Event { } I'm thinking that some magic happens when the interface is decorated with a CoClass attribute, but still how is it possible that we can create an instance of an interface with a new keyword? Shouldn't it generate a compile time error?

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  • How can I read this parameters inside my software? (c#)

    - by Dezigo
    Hello! I have created a shortcut of my .exe file. I want add to '.exe' extra parameters.(on shortcut: Target attribute) Example Target: "C:\Documents and Settings\dezigo\My Documents\c# programm\DirectoryScanner\DirectoryScanner\DirectoryScanner\bin\Debug\DirectoryScanner.exe" + extra parrams(like a method=1) How can I read this parameters inside my software? (c#) Then ,when starting .exe check if(method == 1) { //do something } else { //do something }

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  • Animate css attributes: set "bottom" and remove "top"

    - by Slevin
    I'm working on a few animations with jQuery. I have 3-4 elements which should slide in from the top. I defined their positions with css: #element-1 { top:124px; left:0px; right:auto; bottom:auto; } #element-2 { top:230px; left:670px; right:auto; bottom:auto; } #element-3 { top:auto; left:0px; right:auto; bottom:100px; } Then I save their positions initial on pageload, cause i have to manipulate the css value to top: -1000px to hide them and make the "slide in from top" animation possible. var image_margins = []; $('img').each(function() { var obj = $(this), id = obj.attr('id'), mtop = obj.css('top'), mleft = obj.css('left'), mright = obj.css('right'), mbottom = obj.css('bottom'); // save alle margins in array image_margins[id] = {mtop:mtop,mleft:mleft,mright:mright,mbottom:mbottom}; // hide all content elements obj.css({'top':'-1000px'}); }); When the user clicks the animate button, the elements should slide to their saved positions. The problem: i can't remove the top attribute. Some elements only have bottom margins. I tried to set top to auto or '', but it's always 0px in DOM inspector. And bottom don't work if top is set. How can i get rid of the top attribute? $('.button').click(function(){ $('img').each(function() { var image = $(this), id = image.attr('id'), timeout = 0; setTimeout(function() { var mtop, mleft, mright, mbottom; if (image_margins[id].mtop != 'auto') { mtop = image_margins[id].mtop; } else { mtop = ''; } if (image_margins[id].mleft != 'auto') { mleft = image_margins[id].mleft; } else { mleft = ''; } if (image_margins[id].mright != 'auto') { mright = image_margins[id].mright; } else { mright = ''; } if (image_margins[id].mbottom != 'auto') { mbottom = image_margins[id].mbottom; } else { mbottom = ''; } image.animate({'top':mtop,'left':mleft,'right':mright,'bottom':mbottom},500); },timeout); timeout = timeout + 200; }); });

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  • Is there any open source/freeware TSO/ISP clone for PC?

    - by mawg
    Free as in beer. I can live without the source code. About 10 years ago I saw a commercial product. Is there anything free now? I found Gispf on SourceFOrge, but there are no downloads. Otherwise I Can't find a thing. Edit: I'd prefer something approaching the whole system, but could manage to live with the editor Edit" TSI is "the old Time-Sharing Option on IBM mainframes"

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  • Audible Audio (.aa) file spec?

    - by Adam
    Does anyone know of a good resource on the Audible Audio (.aa) file spec? I'm trying to write a program that can use them, if no one knows of a resource, any tips on reverse engineering the spec my self? I opened it up in a Hex editor and poked around, looks like an MP3 but with a ton more header info.

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  • Image not showing in src tag

    - by Nitesh Panchal
    Hello, Can anybody tell me how do i give absolute path of the img tag's src attribute? The following doesn't work <img alt="NO IMAGE" src="/home/administrator/tiger-info0[1].gif"/> I am working On Ubuntu and i am very sure that image exists on this path.

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  • How do I do a .count on the model an object belongs_to in rails?

    - by Angela
    I have @contacts_added defined as follows: @contacts_added = Contact.all(:conditions => ["date_entered >?", 5.days.ago.to_date]) Each contact belongs_to a Company. I want to be able the count the number of distinct Companies that @contacts_added belong to. contacts_added will have many contacts that belong to a single company, accessible through a virtual attribute contacts_added.company_name How do I do that?

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  • Maintaining software versions

    - by SCM
    I am preparing an Excel sheet in which I have to maintain the version number of different pieces of software developed at our company. Can anyone tell me what kind of information to save along with the version number in that sheet for different types of software? I know only one attribute that is version number, and if anything else so please let me know. Regards

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