Need some starter help with CouchPotato

luislavena · May 9, 2011, 6:01pm

Hi All,

I am trying to use CouchPotato with a CouchDB instance on CloudAnt.

Following the very little documentation I could find, I am trying to do
this:

require “rubygems”
gem “couch_potato”
require “couch_potato”
CouchPotato::Config.database_name = “hangman”
CouchPotato::Config.database_server =
“https://user:[email protected]:5984”
CouchPotato.database

But I get an error

NoMethodError: undefined method database_server=' for #<#<Class:0xb73db280>:0xb73db0c8> from ./couch.rb:5 from (irb):1:in require’
from (irb):1
from /usr/lib/ruby/1.8/rubygems.rb:123

I checked with CouchPotato::Config.methods and database_server is really
not there

I am using CouchDB version 0.5.4

I’d appreciate it if anyone could tell me how to correctly connect to
the server.

Many thanks

Oren S.

orenshani · May 9, 2011, 9:22pm

Oren S. wrote in post #997581:

CouchPotato::Config.database_name = “hangman”
CouchPotato::Config.database_server =
“https://user:[email protected]:5984”

According to the README.md file here:

github.com

langalex/couch_potato/blob/main/README.md

## Couch Potato

… is a persistence layer written in ruby for CouchDB.

![CI](https://github.com/langalex/couch_potato/actions/workflows/ruby.yml/badge.svg)

[![Code Climate](https://codeclimate.com/github/langalex/couch_potato.png)](https://codeclimate.com/github/langalex/couch_potato)

### Upgrading from 1.x to 2.x

Version 1.x monkey patched Date#to_json (=> "2015/01/01") and Time#to_json (=> "2016/01/01 12:00:00 +0000"), 2.x does not (Date => "\"2015-01-01\"",
Time => "\"2016-01-01 12:00:00 +0100\"").

In order to keep the old behavior, add the following to your code:

    require 'couch_potato/core_ext/time'
    require 'couch_potato/core_ext/date'

This will again apply the monkey patches. It is highly recommended to add the require statements if you are upgrading from 1.x. Otherwise,
the format of Date and Time objects written to your database and used to query it will change, which means data written before the update won't

This file has been truncated. show original

…you are supposed to use the database_name=() method to set the url:

CouchPotato::Config.database_name =
“http://username:[email protected]:5984/name_of_the_db”

orenshani · May 10, 2011, 9:18am

Oren S. wrote in post #997581:

But I get an error

NoMethodError: undefined method database_server=' for #<#<Class:0xb73db280>:0xb73db0c8> from ./couch.rb:5 from (irb):1:inrequire’
from (irb):1
from /usr/lib/ruby/1.8/rubygems.rb:123

One trap which might catch you out - if the library itself has a file
called “couch.rb” then calling your own program “couch.rb” will prevent
‘require’ from loading it.

To eliminate that as a possible problem, just rename your couch.rb to
something else.

I checked with CouchPotato::Config.methods and database_server is really
not there

Oh well, then calling it isn’t going to work You’ll need to dig
through the docs or find some sample apps which use CouchPotato.

Incidentally, I made a completely separate CouchDB API called
“couchtiny”, although I’m not using or developing it at the moment. It’s
on github, and you’re more than welcome to try it out. It has some usage
examples in the README and in the doc/ subdir.

orenshani · May 13, 2011, 3:46pm

Thank you both for your answeres. Specifying the database URL to
database_name seem to work.

Candierb, I will look at your couchtiny and try to use it instead of
Couch Potato. Quite frankly, I’m just looking for a simple way to save
and load ruby objects with CouchDB, so whatever works…

Best,

Oren