iamwilhelm

When you want to tail a rails log, but without the extraneous stuff, you can simply do:

  tail -f log/production.log | grep "[/#]"

It will show the first and last lines of each request, plus any error stack trace.

iamwilhelm

/* this mapreduce pair returns all the keys of the attribute hash from all records in the system */

/* the map function to return all the values of keys */
function(doc) {
  keys = {}
  for(key in doc) { 
    if (key != "_id" && key != "_rev") {
      keys[key] = 1
    }
  }

iamwilhelm

alias arc="pushd /Library/Arc3/;mzscheme -m -f as.scm; popd"

iamwilhelm

class SomeMailer < ActionMailer::Base

  # assumes that there's a file named pretty_template.html.erb in app/views/some_mailer
  def html_email_with_attachment(email_address, msg)
    recipients [email_address]
    from "hello@world.com"
    subject "This is an html email with an attachment"

    # have to set content_type explicitly
    content_type "multipart/alternative"

iamwilhelm

<ul>
<% if @messages.empty? %>
  There are no messages
<% else %>
  <% @messages.each do |m| %>
    <li><%= m.body %></li>
  <% end %>
</ul>

iamwilhelm

<ul>
  <% if @messages.each do |m| %>
    <li><%= m.body %></li>
  <% end.empty? %>
    <li>There are no messages</li>
  <% end %>
</ul>

iamwilhelm

def index
  render :update do |page|
    page.inner_html(params["target"], "Hello world!")
    page.effect(:highlight, params["target"])
    # and other page effects
  end
end

iamwilhelm

<h1><%= @article.title %></h1>
<p>
  <%= @article.body %>
</p>
<p id="comments_list" style="display: none">
</p>
<span id="comments_indicator" style="display: none">
  <%= image_tag "indicator.gif" %>
</span>
<%= link_to_remote "show all comments",

iamwilhelm

<h1><%= @article.title %></h1>
<p>
  <%= @article.body %>
</p>
<p id="comments_list" style="display: none">
</p>
<span id="comments_indicator" style="display: none">
  <%= image_tag "indicator.gif" %>
</span>
<a href="#" class="get"

iamwilhelm

$(document).ready(function() {
  $("a.get").click(
        function() {
            url = $(this).attr("data-href");
            target = $(this).attr("data-target");
            $(target).html("Loading...");
            $.get(url, function(data) { 
                      $(target).html(data);
                  });
        });