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What is causing this ActiveRecord::ReadOnlyRecord error?
...s automatically inferred only if :joins was specified without an explicit :select nor an explicit (or finder-scope-inherited) :readonly option (see the implementation of set_readonly_option! in active_record/base.rb for Rails 2.3.4, or the implementation of to_a in active_record/relation.rb and of c...
Convert HashBytes to VarChar
...
I have found the solution else where:
SELECT SUBSTRING(master.dbo.fn_varbintohexstr(HashBytes('MD5', 'HelloWorld')), 3, 32)
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Right query to get the current number of connections in a PostgreSQL DB
...ires aren't equivalent. The equivalent version of the first one would be:
SELECT sum(numbackends) FROM pg_stat_database;
In that case, I would expect that version to be slightly faster than the second one, simply because it has fewer rows to count. But you are not likely going to be able to measu...
Javascript trick for 'paste as plain text` in execCommand
...
content = window.clipboardData.getData('Text');
document.selection.createRange().pasteHTML(content);
}
});
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Disable/enable an input with jQuery?
....prop() or .attr() methods is that you can set the property for a bunch of selected items.
Note: In 1.6 there is a .removeProp() method that sounds a lot like removeAttr(), but it SHOULD NOT BE USED on native properties like 'disabled' Excerpt from the documentation:
Note: Do not use this me...
How can I shift-select multiple checkboxes like GMail?
... can click on one checkbox in the email list, hold down the Shift key, and select a second checkbox. The JavaScript will then select/unselect the checkboxes that are between the two checboxes.
...
Toggle button using two image on different state
...k.xml in drawable folder
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<!-- When selected, use grey -->
<item android:drawable="@drawable/selected_image"
android:state_checked="true" />
<...
CSS '>' selector; what is it? [duplicate]
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> selects immediate children
For example, if you have nested divs like such:
<div class='outer'>
<div class="middle">
<div class="inner">...</div>
</div>
<div class="middle...
ViewModel Best Practices
... have shared classes, like an ApplicationController, you can put it at the root of your project.
Why separate things that are related (HomeController, IndexViewModel) and keep things together that have no relation at all (HomeController, AccountController) ?
I wrote a blog post about this topic....
How do I execute a Git command without being in the repository?
...mit -a -m 'initial commit, called from outside the git directory'
[master (root-commit) ee951b1] initial commit, called from outside the git directory
0 files changed, 0 insertions(+), 0 deletions(-)
create mode 100644 README.txt
local [] Desktop: cd git
local [] git: git log --pretty=oneline
ee951b...