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What is scope/named_scope in rails?
...Zombie.rotting.fresh.recent.limit(3)
It translates to the below in SQL,
select "zombies.*" from "zombies" where "zombies"."rotting" = 't' and (age<20) order by create_at desc limit 3
Example above is based on rails 4 syntax
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HTML5 Canvas 100% Width Height of Viewport?
...o copy the fiddle code to run on your local machine, in which case you can select the mode via a querystring argument, as ?mode=redraw
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Is it possible to write data to file using only JavaScript?
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Yes, you can not write into system file without select it. Read Official Docs: w3.org/TR/file-upload/#security-discussion
– Manoj Ghediya
Aug 2 '19 at 7:10
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Remove large .pack file created by git
...ter the merge that you want to keep, it would be best to rebase master and selectively include commits that you want:
git checkout master
git log # Find the commit hash just before the merge
git rebase -i <commit hash>
In your editor, remove lines that correspond to the commits that added t...
How can I change an element's class with JavaScript?
... supported.
Simple cross-browser solution
The standard JavaScript way to select an element is using document.getElementById("Id"), which is what the following examples use - you can of course obtain elements in other ways, and in the right situation may simply use this instead - however, going int...
Is there a way to use SVG as content in a pseudo element :before or :after
I want to place some SVG images before some selected elements. I am using jQuery but that is irrelevant.
8 Answers
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Array slicing in Ruby: explanation for illogical behaviour (taken from Rubykoans.com)
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Read the slice syntax array[x,y] as "starting after x elements in array, select up to y elements". This is only meaningful if array has at least x elements.
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JavaScript: Check if mouse button down?
...semove='handleMove(this);'>Click and drag me!</div>
The :active selector handles the mouse click much better than mouse up/down, you just need a way of reading that state in the onmousemove event. For that I needed to cheat and relied on the fact that the default cursor is "auto" and I ju...
Eager load polymorphic
...edTable error ( tested in Rails 3, not 4 ) because the association will do SELECT FROM shops WHERE shop.id = 1 AND ( reviews.review_type = 'Shop' ).
The :include option will force a JOIN instead. :)
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Mapping composite keys using EF code first
...f(ColumnAttribute.Order))
.TypedValue.Value ?? 0)
.Select(x => x.Name)
.ToArray();
// apply the keys to the model builder
modelBuilder.Entity(entity.ClrType).HasKey(orderedKeys);
}
I haven't fully tested this in all situations, but it works in my basic t...