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How to redirect to previous page in Ruby On Rails?
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In your edit action, store the requesting url in the session hash, which is available across multiple requests:
session[:return_to] ||= request.referer
Then redirect to it in your update action, after a successful save:
redirect_to...
How do I resolve ClassNotFoundException?
...ronments. We could say that all any program ever does is resolve such definitions... the question is always what/where is the definition and which version did you mean?
– masterxilo
Nov 23 '18 at 22:44
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How to do a GitHub pull request
How do I create and/or send a pull request to another repository hosted on GitHub?
8 Answers
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Alter MySQL table to add comments on columns
I have been checking the MySQL Documentation for ALTER TABLE and it does not seem to include a way to add or modify a comment to a column. How can I do this?
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How can I delete a query string parameter in JavaScript?
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"[&;]?" + parameter + "=[^&;]+"
Seems dangerous because it parameter ‘bar’ would match:
?a=b&foobar=c
Also, it would fail if parameter contained any characters that are special in RegExp, such as ‘.’. And it's not a global regex, so it would only remove one instance...
How can I unit test Arduino code?
I'd like to be able to unit test my Arduino code. Ideally, I would be able to run any tests without having to upload the code to the Arduino. What tools or libraries can help me with this?
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Return None if Dictionary key is not available
I need a way to get a dictionary value if its key exists, or simply return None , if it does not.
11 Answers
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Can I make git recognize a UTF-16 file as text?
I'm tracking a Virtual PC virtual machine file (*.vmc) in git, and after making a change git identified the file as binary and wouldn't diff it for me. I discovered that the file was encoded in UTF-16.
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Create an instance of a class from a string
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Related with great examples: stackoverflow.com/questions/493490/…
– John S.
Apr 24 '13 at 14:23
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Spring Cache @Cacheable - not working while calling from another method of the same bean
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I believe this is how it works. From what I remember reading, there is a proxy class generated that intercepts all requests and responds with the cached value, but 'internal' calls within the same class will not get the cached value.
From https:...