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Run a callback only if an attribute has changed in Rails
... # ...
end
end
The commit that changed ActiveRecord::Dirty is here: https://github.com/rails/rails/commit/16ae3db5a5c6a08383b974ae6c96faac5b4a3c81
Here is a blog post on these changes: https://www.ombulabs.com/blog/rails/upgrades/active-record-5-1-api-changes.html
Here is the summary I made...
Can I checkout github wikis like a git repository?
...
You can now!
git clone https://github.com/user/project.wiki.git
or if you use ssh
git clone git@github.com:username/project.wiki.git
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Find an element in DOM based on an attribute value
...torAll so you can do:
document.querySelectorAll('[data-foo="value"]');
https://developer.mozilla.org/en-US/docs/Web/API/Document.querySelectorAll
Details about browser compatibility:
http://quirksmode.org/dom/core/#t14
http://caniuse.com/queryselector
You can use jQuery to support obsolete ...
Publish to S3 using Git?
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git-s3 - https://github.com/schickling/git-s3
You just have to run git-s3 deploy
It comes with all benefits of a git repo and uploades/deletes just the files you've changed.
Note: Deploys aren't implicit via git push but you could a...
What do the different readystates in XMLHttpRequest mean, and how can I use them?
...nt
3 The request is in process
4 The request is complete
(from https://www.w3schools.com/js/js_ajax_http_response.asp)
In practice you almost never use any of them except for 4.
Some XMLHttpRequest implementations may let you see partially received responses in responseText when readyS...
Update built-in vim on Mac OS X
...al/bin
$ # Download, compile, and install the latest Vim
$ cd ~
$ hg clone https://bitbucket.org/vim-mirror/vim or git clone https://github.com/vim/vim.git
$
$ cd vim
$ ./configure --prefix=/opt/local
$ make
$ sudo make install
$ # Add the binary to your path, ahead of /usr/bin
$ echo 'PATH=/opt/lo...
git pull VS git fetch Vs git rebase
...rge to merge the retrieved branch
heads into the current branch"
(Ref: https://git-scm.com/docs/git-pull)
For your second statement/question:
'But what is the difference between git pull VS git fetch + git rebase'
Again, from same source:
git pull --rebase
"With --rebase, it runs gi...
Shrink a YouTube video to responsive width
...);
Simple to use with only embed:
<iframe width="16" height="9" src="https://www.youtube.com/embed/wH7k5CFp4hI" frameborder="0" allowfullscreen></iframe>
Or with responsive style framework like Bootstrap.
<div class="row">
<div class="col-sm-6">
Stroke Awareness
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Citing the author of a blockquote using Markdown syntax
...
Adding another sample here for reference. Generated from https://en.wikipedia.org/wiki/Special:CiteThisPage
> Test-driven development (TDD) is a software development process that relies on the repetition of a very short development cycle: requirements are turned into very speci...
How do I update an NPM module that I published?
...npm version <update_type>
Run npm publish.
Go to your package page (https://npmjs.com/package/) to check that the package version has been updated.
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