Handle errors using Gaffe

app/assets/stylesheets/bootstrap_and_overrides.css.less

@@ -160,6 +160,15 @@ table {
   }
 }
 
+// Error page
+.large-error-icon {
+  float: left;
+  text-align: right;
+  font-size: 160px;
+  color: lightgrey;
+  margin-left: 25px;
+}
+
 // Tasks ..
 .accepted {
   color: #468847;

app/controllers/errors_controller.rb

@@ -0,0 +1,24 @@
+class ErrorsController < ApplicationController
+  include Gaffe::Errors
+
+  skip_before_filter :authenticate
+
+  layout :current_layout
+
+  def show
+    render "errors/#{@rescue_response}", status: @status_code
+  end
+
+  private
+
+  def current_layout
+    # Need foodcoop for `current_user`, even though it may not be retrieved from the url.
+    params[:foodcoop] ||= session[:scope]
+    current_user ? 'application' : 'login'
+  end
+
+  def login_layout?
+    current_user.nil?
+  end
+  helper_method :login_layout?
+end

app/views/errors/_error.html.haml

@@ -0,0 +1,9 @@
+- title local_assigns[:title], false
+
+- unless login_layout?
+  %i.hidden-phone.large-error-icon.icon-exclamation-sign
+%div(class="#{login_layout? ? '' : 'span6'}")
+  %h1= local_assigns[:title]
+  %div(class='alert alert-#{local_assigns[:type] || 'warn'}')
+    = local_assigns[:page]
+  = link_to t('ui.back'), 'javascript:history.go(-1)', class: 'btn btn-primary'

app/views/errors/internal_server_error.html.haml

@@ -0,0 +1,5 @@
+- page = capture do
+  %p= t '.text1'
+  %p= t '.text2'
+
+= render 'error', title: t('.title'), type: :error, page: page

app/views/errors/not_found.html.haml

@@ -0,0 +1,4 @@
+- page = capture do
+  %p= t '.text'
+
+= render 'error', title: t('.title'), page: page

app/views/finance/invoices/new.html.haml

@@ -1,3 +1,3 @@
 - title t('.title')
 = render :partial => 'form'
-= link_to t('.back'), finance_invoices_path
+= link_to t('ui.or_cancel'), finance_invoices_path

app/views/finance/invoices/show.html.haml

@@ -36,5 +36,4 @@
   =h @invoice.note
 
 = link_to t('ui.edit'), edit_finance_invoice_path(@invoice)
-|
-= link_to t('.back'), finance_invoices_path
+= link_to t('ui.or_cancel'), finance_invoices_path