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How to return an empty ActiveRecord relation?
If I have a scope with a lambda and it takes an argument, depending on the value of the argument, I might know that there will not be any matches, but I still want to return a relation, not an empty array:
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Select2 dropdown but allow new values by user?
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For version 4+ check this answer below by Kevin Brown
In Select2 3.5.2 and below, you can use something like:
$(selector).select2({
minimumInputLength:1,
"ajax": {
data:function (term, page) {
return { term:term, page:page };
},
dataType:"json",
quietMillis:100,
re...
Replacing a fragment with another fragment inside activity group
I have a fragment inside a group activity and I want to replace it with another fragment:
12 Answers
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django order_by query set, ascending and descending
... edited Jan 20 '14 at 18:10
nandhp
4,05411 gold badge2424 silver badges4141 bronze badges
answered Mar 23 '12 at 6:42
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How to use dashes in HTML-5 data-* attributes in ASP.NET MVC
...ng to use HTML5 data- attributes in my ASP.NET MVC 1 project. (I am a C# and ASP.NET MVC newbie.)
8 Answers
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How to determine if a record is just created or updated in after_save
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It's best to differentiate with an after_update and an after_create. The callbacks can share a common method that takes an argument to indicate if it's a create or update.
– matthuhiggins
Oct 9 '13 at 23:44
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UIBarButtonItem with custom image and no border
...ustom category: I have to create the header file with those declarations, and the implementation file, where I put the code you're refering ? thanks
– mongeta
Apr 21 '10 at 8:59
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Should I put input elements inside a label element?
Is there a best practice concerning the nesting of label and input HTML elements?
14 Answers
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C# Xml中SelectSingleNode方法中的xpath用法（Xml节点操作最佳方式） - 更...
...。它可以包括：Element, Text, Comment, ProcessingInstruction, CDATA, and EntityReference.
Attribute, 指在<Employee >中的粗体部分。
Comment，指形如：<!-- my comment --> 的节点。
Text，指在<Name>Tom<Name>的粗体部分。
2、在XML中，可以用XmlNode对象来...
C# Xml中SelectSingleNode方法中的xpath用法（Xml节点操作最佳方式） - 更...
...。它可以包括：Element, Text, Comment, ProcessingInstruction, CDATA, and EntityReference.
Attribute, 指在<Employee >中的粗体部分。
Comment，指形如：<!-- my comment --> 的节点。
Text，指在<Name>Tom<Name>的粗体部分。
2、在XML中，可以用XmlNode对象来...