kagemusha

Tested on: Rails 3.2.1

Will get error if don't add :foreign_key to has_many side of relat:

e.g.
class Song  < ActiveRecord::Base
  belongs_to :creator, :class_name=>"User" #person who added song entry

class User < ActiveRecord::Base
  has_many :created_songs, :class_name=>"Song", :foreign_key => 'creator_id'

kagemusha

url = location.href

e.g. to get anchor
anchor = location.href.split('#')[1]

kagemusha

Rails 3.2

1. In initializers/mime_types.rb

2. Detection of Mobile Device 

I put this is a file called mobile.rb in app/util
module Mobile
  #optional for testing
  TEST_MOBILE_DEV = false    #set true to test on browser

kagemusha

Used on: Rails 3.2.1

If you have more than one set of assets to precompile, need to add using config.assets.precompile

E.g. if have mobile.css and mobile.js to precomp, do the following


In config/environments/production.rb (or whenver env you want precompiled)

  # Precompile additional assets (application.js, application.css, and all non-JS/CSS are already added)

kagemusha

Circa: 1.1.0rc1

If have href='#',  e.g.  %a{href: '#', id: 'mylink'}, jqm will not fire an event so callback $('#mylink').click won't get called.

Instead do  %a{href: 'javascript:myFunction()', ...}


Ref: http://forum.jquery.com/topic/how-can-i-create-buttons-that-execute-some-javascript-without-linking-to-any-address 

kagemusha

This seems to come from haml.js

Not sure the quintessential case, but I had problems when calling JSON.stringify with a string with an apostrophe in in.  Apparentely JSON.stringify can't handle apostrophes. 

kagemusha

ActionView::MissingTemplate (Missing template...)

To fix this, make sure have a render such as:

      format.json { render :json=>json_to_render }

If leave out the :json=> will get error

Seems if just do respond_to :json and return @someObj will get error

kagemusha

Install: gem install rails_apps_composer

Create app example:
rails_apps_composer new atm -r devise git haml heroku rails_admin rspec sass seed_database add_user home_page

List Recipes: rails_apps_composer list

Additional Steps
- gemfile
- If using pg: create db

kagemusha

Ref: https://devcenter.heroku.com/articles/custom-domains

For naked domains, fairly simple:

1. Add domain to heroku
$ heroku domains:add www.example.com

2. Add separate A records for each of the following addresses using your DNS management tool (e.g. at godaddy or where your domain name hosted):

75.101.163.44

kagemusha

make sure database is clean, as sometimes causes funny errs if not
- e.g. was trying to create objs, but failed silently on a uniqueness constraint, so bombed when supposedly created models asked for their ids