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What is the difference between t.belongs_to and t.references in rails?
...= options.delete(:polymorphic)
args.each do |col|
column("#{col}_id", :integer, options)
column("#{col}_type", :string, polymorphic.is_a?(Hash) ? polymorphic : options) unless polymorphic.nil?
end
end
alias :belongs_to :references
This is just a way of making your code more...
Entity Framework 4 Single() vs First() vs FirstOrDefault()
...? Are there others that also accomplish the same thing, that I should consider instead?
– asfsadf
Aug 14 '10 at 22:26
7
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How do I determine whether an array contains a particular value in Java?
...
Odd, NetBeans claims that 'Arrays.asList(holidays)' for an 'int[] holidays' returns a 'list<int[]>', and not a 'list<int>'. It just contains one single element. Meaning the Contains doesn't work since it just has one element; the int array.
...
Sticky sidebar: stick to bottom when scrolling down, top when scrolling up
I have been looking for some time now for a solution to my sticky sidebar problem. I have a specific idea of how I would like it to act; effectively, I would like it to stick to the bottom as you scroll down, and then as soon as you scroll back up I would like it to stick to the top, in a fluid moti...
Multiple submit buttons on HTML form – designate one button as default [duplicate]
...our. You can effectively alter the order using floats. For example:
<p id="buttons">
<input type="submit" name="next" value="Next">
<input type="submit" name="prev" value="Previous">
</p>
with:
#buttons { overflow: hidden; }
#buttons input { float: right; }
will effecti...
Which HTTP methods match up to which CRUD methods?
... And since PUT and DELETE aren't yet supported by web browsers, it's considered okay to "overload POST" by adding a query string argument like method=PUT or method=DELETE on the URI being POSTed.
– Jim Ferrans
Jun 2 '11 at 4:16
...
How to set a value to a file input in HTML?
...new form
var formData = new FormData();
formData.append('someUploadIdentifier', blob, 'someFileName.json');
// action after uploading happens
xhr.onload = function(e) {
console.log("File uploading completed!");
};
// do the uploading
console.log("File up...
Difference between style = “position:absolute” and style = “position:relative”
...the browser viewport, and 20px from the left edge of same.
However, if I did something like this:
<div id="outer" style="position:relative">
<div id="inner" style="position:absolute; left: 20px; top: 20px;"></div>
</div>
...then the inner div would be positioned 20px...
How to debug PDO database queries?
...
Great explanation - thanks. Apparently I had only fuzzy ideas of how this works. I suppose when the statement is prepared, the resulting object contains a hash or numerical ID that can be sent back to the database with the parameters to plug in.
– Nathan Long...
How do I declare and assign a variable on a single line in SQL
... You can also initialize from a select statement, eg: declare @eid uniqueidentifier = (select top 1 id from t_Event)
– Damien Sawyer
Sep 8 '16 at 20:32
add a commen...