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def get_queryset(self):
    """
    Will get the queryset.
    """
    forum_id = self.kwargs['forum_id']
    return Topic.objects.filter(forum__id=forum_id).order_by('-is_sticky', '-modified').select_related('last_post__topic', 'last_post__author', 'author')

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Sublime Text 2 – Useful Shortcuts (PC)

Loosely ordered with the commands I use most towards the top. Sublime also offer full documentation.

Editing

Ctrl+C	copy current line (if no selection)
Ctrl+X	cut current line (if no selection)
Ctrl+⇧+K	delete line
Ctrl+↩	insert line after

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= form_for([@forum, @topic]) do |f|
  - if @topic.errors.any?
    %div{id: 'error_explanation'}
      %h2
        = pluralize(@topic.errors.count, "error") 
        prohibited this topic from being saved:
      - for message in @topic.errors.full_messages
        %li
          = message

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require 'spec_helper'

describe "CreateTopics" do
  it "creates topics" do
    @forum = Forum.create(name: 'Ruby')
    visit new_forum_topic_path, @forum.slug

    fill_in "Name", with: "Test"
    click_button "Submit"
  end

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require 'spec_helper'
require 'faker'

feature 'Create user' do
  scenario 'creates a user successfully with a valid username, email and password' do
    register_with Faker::Internet.user_name, 'test123', 'test123', Faker::Internet.email
    user_sees_success_message "Registered successfully!"
  end

  scenario 'notifies the user if his username is invalid' do

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FactoryGirl.define do
  factory :category do 
    name 'Programming'
  end
end

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Topic
  is valid if all parameters match (FAILED - 1)

Failures:

  1) Topic is valid if all parameters match
     Failure/Error: build(:topic).should be_valid
     ActiveRecord::RecordInvalid:
       Validation failed: Username has already been taken
     # C:in `object'

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= form_for([@forum, @topic]) do |f|
  - if @topic.errors.any?
    %div{class: 'alert'}
      %h2
        = pluralize(@topic.errors.count, 'error') 
        prohibited this topic from being saved:
      - for message in @topic.errors.full_messages
        %li
          = message

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= form_for(:user) do |f|

  - if flash[:alert]
    %div{class: 'alert'}
      = flash[:alert]

  = f.label :email
  %div{class: 'field'}
    = f.email_field :email

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Parameters:

{"_method"=>"put",
 "authenticity_token"=>"eDv4pcLTU0m3os+7OImIOdNQxouyQoSb3FojGMXMNh8=",
 "forum_id"=>"ruby",
 "topic_id"=>"asdasdasdasdasd"}