大约有 47,000 项符合查询结果（耗时：0.0637秒） [XML]
How to override to_json in Rails?
...def to_json(options)
...
end
Longer explanation of to_json, as_json, and rendering:
In ActiveSupport 2.3.3, as_json was added to address issues like the one you have encountered. The creation of the json should be separate from the rendering of the json.
Now, anytime to_json is called on an ...
When to use the JavaScript MIME type application/javascript instead of text/javascript?
...text/javascript is used in HTML documents so Internet Explorer can understand it.
4 Answers
...
Round a Floating Point Number Down to the Nearest Integer?
As the title suggests, I want to take a floating point number and round it down to the nearest integer. However, if it's not a whole, I ALWAYS want to round down the variable, regardless of how close it is to the next integer up. Is there a way to do this?
...
Nginx Different Domains on Same IP
...y server {} blocks, the sever_name directives were wildcards: .domain1.com and .domain2.com. Changing them to server_name www.domain1.com domain1.com; and server_name www.domain2.com domain2.com; now has the correct page for each site displaying when those addresses are used.
–...
Rails nested form with has_many :through, how to edit attributes of join model?
...
Rails 3 update: the form_for and field_for need <%= %> instead of <% %> if you're using Rails 3.
– Arcolye
Sep 29 '10 at 16:09
...
How to write a caption under an image?
...
Figure and Figcaption tags:
<figure>
<img src='image.jpg' alt='missing' />
<figcaption>Caption goes here</figcaption>
</figure>
Gotta love HTML5.
See sample
#container {
text-ali...
How can I combine hashes in Perl?
...he best way to combine both hashes into %hash1? I always know that %hash2 and %hash1 always have unique keys. I would also prefer a single line of code if possible.
...
How to change the style of the title attribute inside an anchor tag?
...
When I do this, I see a double tool tip. The styled one, and then shortly after, the unstyled one pops over this one. This is on your fiddle. I am using chrome. Is this an abnormality?
– user1816910
Jun 28 '14 at 22:04
...
Transaction isolation levels relation with locks on table
...
I want to understand the lock each transaction isolation takes on the table
For example, you have 3 concurrent processes A, B and C. A starts a transaction, writes data and commit/rollback (depending on results). B just executes a SELECT st...
What is the HEAD in git?
There seems to be a difference between the last commit, the HEAD and the state of the file I can see in my directory.
5 Ans...