If you're a rails developer you've probably tackled forms which update multiple models and have their own custom validations and/or business logic involved. I'm talking about forms like Signup which may need to create a few other models after the User has successfully been saved.

I've recently had to build a signup form which would create or organization, then create a new postgres schema for the organization, then build the administrative user model and also capture payment. Doing this with simple after_create calls would most likely wreak havoc later in life so I've split this out into a separate Signup model.

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If you need to customize the field name for ActiveRecord validation messages, I wrote this quick little include that allows you to remap column names.

For example, if you have a User with a name field and you didn't like the default "Name cannot be blank." message, and instead wanted "Your name cannot be blank" you can include this module and use rename_fields :name => 'Your Name' to rename the column.

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Here is a small service I wrote which will use the openweathermap.com weather service in angular.

This can easily be adapted to work with the angular geolocation service I posted last week. You can see this working in the weather service gist, but I removed it in the JSFiddle to keep it simple.

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Here is a small piece of code that can be dropped into an angular project and used to get the users geolocation through the browser.

The first few times I tried it I was hung up on the scope not updating, but $rootScope.$apply seemed to get around that. Here is a JSFiddle to see how this works.

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Update! I've updated my slate config to use JavaScript. The new grid is much easier to use and much more accurate. SlateGrid.js and my current slate config.

If you ever found apps like Divvy or SizeUp lacking, you should check out slate window manager. It is a free, open-source window manager for OSX that is very customizable.

A huge bonus of Slate is that it allows you to setup window layouts - specific places for specific windows. This is great for different scenarios: working, dealing with email, chatting, etc. Just setup a different layout and toggle between them when switching tasks for added productivity. The up-front cost kind of sucks, but it can be worth it.

One of the things I was struggling with was creating basic window layouts with it, and I devised a bootstrap-like grid "framework" for it. What it does is try to create a generic 12x12 grid on the screen, so you can push and pull app windows into specific coordinants, similar to how a CSS framework would do it.

The framework really just sets up some slate aliases that let you set window dimensions in a more human-friendly way. The aliases break down into 4 main categories:

span-{x}
Set the width of the window to X columns (1/12th of screen width)
row-{x}
Set the height of the window to X rows (1/12th of the screen)
push-{x}
Move the window X columns to the right
drop-{x}
Move the window X rows from the top

When using these with slate's move command you can quickly and easily setup a window arrangement that suits your needs.

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Ever use jQuery and think the .bind() and .trigger() APIs are nice? Here is a small class you can use when writing CoffeeScript to quickly implement the observer pattern in your own objects.

For more involved scenarios, consider using a library like RxJS.

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I was writing an API in rails a while back and as I started to write the client I noticed that, while using Devise's TokenAuthenticatable strategy, there was no other way to pass the token in besides the ?token=XXXX parameter.

This was a little odd since you would expect something like a token to be able to be passed in through the Authorization headers. I ended up writing a custom devise strategy that will now allow you to pass your user's token in via the Authorization header.

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I don't mean to imply that git pulling and merging is painful, because it isn't. I just wanted to showcase a pretty nice gem called git-smart. You can install it using gem install git-smart.

What this gem does is pretty simple, it attempts to do the "right" thing depending on the situation. I'll run through a few of the commands:

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Heres a small script from Ben Hoskings which is immensely useful. It lists all the branches in your git project ordered by when you last worked on them. It also highlights branches which have not yet been merged into your current branch, which is super useful when looking to prune some branches.

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I'm switching things up this time. This post has nothing to do with code, and everything to do with an awesome gadget. Today my nest learning thermostat came!

If you're unfamiliar with the nest, it is a replacement for your programmable thermostat that learns your habits and programs itself, among other things like monitoring energy usage to help save you money. If that isn't cool enough, it is wi-fi enabled which means it auto-updates itself, I can set the schedule from a website, and I can control the temperature in the house from anywhere in the world. Is it lame to get so excited about a thermostat? Probably, but who cares, this thing is fucking cool. Check it out.

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