kagemusha

1. If you are trying to `go get` a private repo, you need to be able to enter your `username` and `password` from the prompt. 
To get the prompt you need to enable the git terminal prompt.

    env GIT_TERMINAL_PROMPT=1 go get 'github.com/the-user/the-repo'
    
2. Because of 2FA you cannot use your password.  You need to generate an access token and enter that in the password field
instead (you will want to copy at the clipboard on the token generation page, b/c it will be long).  To generate the token, go 
to [https://github.com/settings/tokens/new](https://github.com/settings/tokens/new).  Or from the Github UI, 
` Setting - Developer Settings - Personal access tokens`

kagemusha

Get the Heroku db as detailed here:
http://devcenter.heroku.com/articles/pgbackups#exporting_via_a_backup

1. heroku pgbackups:capture
2. heroku pgbackups:url <backup_num>  #=>backup_url
   -  get backup_num with cmd "heroku pgbackups"
3. curl -o latest.dump <backup_url>

Then locally do:
$ pg_restore --verbose --clean --no-acl --no-owner -h localhost -U myuser -d mydb latest.dump

kagemusha

Tested on: Rails 3.1

In this example, you want to return as json a group of Items and the name of the Company which makes them.

Models are as follows:

  class Company  < ActiveRecord::Base
    has_many :items

  class Item  < ActiveRecord::Base

kagemusha

version: grunt-cli v0.1.8


1. Install node-inspector globally (-g)

    npm install -g node-inspector

2. Add debugger statements to your code

3. Run your grunt task in debug mode

kagemusha

Versions: Datatables 1.8.x

If get error such as:

DataTables warning (table id = 'myTable'): Requested unknown parameter '2' 
from the data source for row 0

Means num of columns in table heading and in data as specified in 
aoColumns do not match.  Making sure are same number should fix this.

kagemusha

echo "redoing aliases"

# alias to reload aliases in your current window
alias real=". ~/kagemusha/aliases/aliases"

# specific things i'm currently working on
alias rspet="rspec spec/controllers/api/canvas/email_templates_controller_spec.rb"
alias rspes="rspec spec/controllers/api/canvas/email_sections_controller_spec.rb"
alias dlvw="dlv debug github.com/kagemusha/vowpal_websrv -- --workers 1 --models ./sample_models"
alias 58="lsof -i tcp:5858"

kagemusha

Version: Rails 3.2.1
TypeError:  Cannot visit Videoset

Happens when specify class for id in validations (perhaps other places), e.g.:

INCORRECT
validates_uniqueness_of :song_num, :scope=>[:videoset]

CORRECT
validates_uniqueness_of :song_num, :scope=>[:videoset_id]

kagemusha

// id SERIAL primary key

CREATE TABLE public.user_events
(
    id serial primary key,
    campaign_id bigint NOT NULL,
    user_uuid bigint NOT NULL,
    reward integer NOT NULL
)

kagemusha

Tested on: Rails 3.1

If have error:

ActionDispatch::Session::SessionRestoreError (Session contains objects whose class definition isn't available.
Remember to require the classes for all objects kept in the session.

can fix by changing a char in secret token in initializers/secret_token.rb

    MyApp::Application.config.secret_token

kagemusha

Tested on: Rails 3.1, Mongoid 2.0.1, pg 0.12.0 gem

Migrate from Mongo to PG
1. remove mongoid gem
2. add pg gem
3. in application.rb re-add ActiveRecord
4. for all models
- inherit from ActiveRecord::Base
- get rid of Mongoid:Document line
- make migrations and put fields there