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How to reset a single table in rails?
...
A lot of people (like me) come here to find how to delete all the data in the table. Here you go:
$ rails console
> ModelName.delete_all
or
> ModelName.destroy_all
destroy_all checks dependencies and callbacks, and takes a little longer.
delete_all is a straight SQL que...
Colspan all columns
How can I specify a td tag should span all columns (when the exact amount of columns in the table will be variable/difficult to determine when the HTML is being rendered)? w3schools mentions you can use colspan="0" , but it doesn't say exactly what browsers support that value (IE 6 is in our li...
List of installed gems?
Is there a Ruby method I can call to get the list of installed gems?
11 Answers
11
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jQuery Validate Required Select
...kup.)
– Mason Houtz
Nov 13 '12 at 2:32
3
@MasonHoutz it's still logic in the markup, whether the ...
center aligning a fixed position div
...roject :)
– tctc91
Jan 21 '13 at 15:32
6
where do these 37.5% get from?
– a...
Maximum length for MySQL type text
...2^24 (16 Megabytes)
LONGBLOB, LONGTEXT L + 4 bytes, where L < 2^32 (4 Gigabytes)
L is the number of bytes in your text field. So the maximum number of chars for text is 216-1 (using single-byte characters). Means 65 535 chars(using single-byte characters).
UTF-8/MultiByte encoding: u...
How to remove a web site from google analytics
...t "Delete this view."
It will warn you that you're about to delete all of the data associated with this property. If you're sure, confirm.
Done!
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Apache .htaccess 禁止访问某目录方法 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...禁止的目录中的.htaccess文件中添加一下两行代码。
order allow,deny
deny from all
(可以把all换成某一ip地址)最简单方法，在所要禁止的目录中的.htaccess文件中添加一下两行代码。
order allow,deny
deny from all
(可以把all换成某一ip地...
Enable the display of line numbers in Visual Studio
...al Studio has line numbering:
Tools -> Options -> Text Editor -> All Languages -> check the "Line numbers" checkbox.
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performing HTTP requests with cURL (using PROXY)
...t to host curl: (7) couldn't connect to host
– user873286
Feb 27 '12 at 22:50
I get above error when I run this comman...