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Rails 3 migrations: Adding reference column?
...gration AddUserRefToProducts user:references
like you can see on rails guides
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CSS two divs next to each other
...out 200px; and the left <div> must fill up the rest of the screen width? How can I do this?
13 Answers
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Remove the last line from a file in Bash
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@Miro : By no means is $ d a regex. It is a sed command. d is the command for deleting a line, while $ means "the last line in the file". When specifying a location (called "range" in sed lingo) before a command, that command is only appli...
Can we pass parameters to a view in SQL?
..._emp (@pintEno INT)
RETURNS TABLE
AS
RETURN
SELECT * FROM emp WHERE emp_id=@pintEno;
This allows you to use it as a normal view, with:
SELECT * FROM v_emp(10)
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How do I use su to execute the rest of the bash script as that user?
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I did this - but it still asked me for a password.
– Hippyjim
Oct 19 '13 at 16:30
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Socket.io rooms difference between broadcast.to and sockets.in
.... Also, every socket is automatically connected to their own room with the id socket.id (this is how private chat works in socketio, they use rooms).
Send to the sender and noone else
socket.emit('hello', msg);
Send to everyone including the sender(if the sender is in the room) in the room "my r...
How to convert Nonetype to int or string?
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@spider - that still means it's highly dependent on the situation, and "determine a sensible value" still applies.
– detly
Nov 28 '13 at 21:08
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How to access parent Iframe from JavaScript
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Also you can set name and ID to equal values
<iframe id="frame1" name="frame1" src="any.html"></iframe>
so you will be able to use next code inside child page
parent.document.getElementById(window.name);
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Why use the 'ref' keyword when passing an object?
...object, then object variables always act as references to the object. This means that when the ref keyword is used you've got a reference to a reference. This allows you to do things as described in the example given above. But, when the parameter type is a primitive value (e.g. int), then if this p...
Cannot set property 'innerHTML' of null
...ads the entire HTML DOM from top to bottom. Any JavaScript code written inside the script tags (present in head section of your HTML file) gets executed by the browser rendering engine even before your whole DOM (various HTML element tags present within body tag) is loaded. The scripts present in h...