Re: Simplest easiest rss feeds?

[Jonathan Groll]

On Wed, 5 Oct 2011 11:20:31 +1100, Jenna Fox a...@creativepony.com wrote:

 [1  multipart/alternative (7bit)]
 [1.1  text/plain; windows-1252 (quoted-printable)]
 
 [1.2  text/html; windows-1252 (quoted-printable)]
 I'm looking to make rss feeds of some of my controller data - what's the
 simplest way to render some? Is there some way I can feed a json-like arrays
 of hashes type of structure in to some gem and get out an xml feed? Would it
 be more of a builder sort of operation?

An example. Succinct. RSS:Maker. For your reference. (from my blogging
engine written with Camping 1.9):

Firstly, need to require rss/maker, then
module Blogg::Controllers

  class Index  R '/', '/tag/([-\w]+)', '/(rss)', '/(rss)/([-\w]+)'
def get ( format='html', *rest )

...
then later on:

  # Produce RSS feed
  if format == 'rss'
content = RSS::Maker.make('2.0') do |m|
  m.channel.title = @@config[:title]
  m.channel.about = URL().to_s + '/rss'
  m.channel.link  = URL().to_s
  m.channel.description = @@config[:descr]
  m.items.do_sort = true # sort items by date

  for post in @posts
if post.okayed == true  tag_matches?(post, @tagg)
  i = m.items.new_item
  i.title = post.title
  i.link =  URL(View, post.slug).to_s
  i.guid.content = URL(View, post.id).to_s
  i.guid.isPermaLink = true
  ar = post.body.split(/^---!/)
  i.description = RedCloth.new(ar[1]).to_html
  i.description  RedCloth.new(ar[2]).to_html if (ar[2] != nil  
ar[2] != \r\n  ar[2] != )
  i.date = post.when
end
  end

end
r 200, content.to_s, 'Content-Type' = 'application/rss+xml; 
charset=UTF-8'

Notes: I use ---!  to mark a block at the beginning of a post  - this block
is the description of the post. Redcloth markdown is used.

Cheers,
Jonathan
--
jjg: Jonathan J. Groll : groll co za
has_one { :blog = http://bloggroll.com; }
Sent from my computer device which runs on free software
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Re: sqlite3 connection problem

[Jonathan Groll]

On Tue, Jun 09, 2009 at 11:35:26AM +0100, Dave Everitt wrote:
Any feedback appreciated on the following. My most recent attempt to  
identify the issue is a minimal Ruby/SQLite/ActiveRecord script, Pastied 
here: http://pastie.textmate.org/492514 which brings up the following 
when run from the command line (an empty database file already exists):


$ ./simple_db.rbx
[SNIP]/active_record/connection_adapters/sqlite3_adapter.rb:29:in  
`table_structure': Could not find table 'users' 


(1) Not really a 'camping' related pastie. See (3) for the same thing
done the 'camping way'.

(2) There seems to be nothing in the code above telling activerecord
to create your database schema unless you're doing seperate rake
db:migrate scripts outside of this script.  My suspicion, therefore is
that the 'users' table simply does not exist in your database.

(3) This is a full working solution for camping 1.5:
#!/usr/bin/env ruby

$:.unshift File.dirname(__FILE__) + /../../lib
require 'camping'

Camping.goes :Dave

module Dave::Models
  class User  Base
  end
  class CreateTables  V 1.0
def self.up
  create_table :dave_users, :force = true do |t|
t.column :id,   :integer, :null = false
t.column :name, :string,  :limit = 255
t.column :password, :string,  :limit = 255
  end
  def self.down
drop_table :dave_users
  end

end
  end
end

module Dave::Controllers
  class Index  R '/'
def get
  user = User.new()
  user.id = dave
  user.name = Dave Everitt
  user.password = davepass
  user.save

  # user = User.find(dave)
  # user.destroy()

  render :fin
end
  end
end

module Dave::Views
  def fin
Finished, no errors
  end
end

def Dave.create
  Dave::Models.create_schema :assume = (Dave::Models::User.table_exists? ? 1.0 
: 0.0)
end


***
Save this file as dave.rb. Note the Dave::Models.create_schema call
(as per point 2 above)

To get this to work I have the following gems installed:
$ gem list

*** LOCAL GEMS ***

activerecord (2.3.2)
activesupport (2.3.2)
builder (2.1.2)
camping (1.5.180)
markaby (0.5)
metaid (1.0)
sqlite3-ruby (1.2.4)

I run it with:
camping dave.rb

I then visited http://localhost:3301/ with my browser (which showed
Finished, no errors).

To confirm that there is a table in the sqlite database with the
correct fields and with one record:

$ sqlite3 ~/.camping.db
SQLite version 3.6.10
Enter .help for instructions
Enter SQL statements terminated with a ;
sqlite .tables
dave_schema_infos  dave_users sessions 
sqlite .header on

sqlite select * from dave_users;
id|name|password
0|Dave Everitt|davepass

Hope some of the above points you in the 'right' direction.

Cheers,
Jonathan.
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Re: deployment

[Jonathan Groll]

Hi David,

On Wed, Jun 03, 2009 at 10:24:01AM -0400, David Susco wrote:

I have a few camping apps I'd like to start automatically if my server
ever restarts. There's an init.d file that comes with mongrel_cluster
that you can use for rails apps, is there anything out there for
camping apps though?

With the postamble containing all the configuration for the app, it
seems that all the init.d file would have to do is execute the camping
file. Has anyone done this/have any pointers?


I know this is not exactly what you're asking since your question was
mongrel based, but if you were to look at running camping 2.0 with
passenger/rack you would get automatic restarts as well as working
redirects. Plus you'd be able to also easily deploy rails apps (and
even some python apps) with the same setup. 


Cheers,
Jonathan
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The subtleties of config.ru, or what to do if you get Camping problem! / not found

[Jonathan Groll]

On Thursday I tried to get the camping blog.rb example working with
rack/passenger/apache.

The config.ru (below) resulted in Camping Problem!
/ not found

require 'rubygems'
require 'rack'
require 'camping'
Camping.goes :Blog
Blog::Models::Base.establish_connection :adapter = sqlite3,
:database = /home/jonathan/.camping.db
run Blog

This is what it should have in it:
require 'rubygems'
require 'rack'
require 'camping'
require 'blog'
Blog::Models::Base.establish_connection :adapter = sqlite3,
:database = /home/jonathan/.camping.db
run Blog

When the top version of config.ru is run, it results in the route
maker getting a 'constants' array consisting only of [I] (instead of
[Style, Logout, Login, PostN, I, Index, PostNew, Edit]
). What magic sets the constants array? (couldn't find it with a quick
grep through the code)

I guess this is an easy mistake to make (at least for me it was) if
you just read the phusion passenger user guide which explicitly says
use Camping.goes. So if anyone else sees this message, set config.ru
as above.

Cheers,
Jonathan

P.S. one would think that putting a require 'blog' before the
Camping.goes and commenting out the Camping.goes in blog.rb would fix
things with the first approach, but I stumbled into a whole hornets
nest of errors relating to Blog::Models::Base when I tried that.
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