Win a copy of Murach's MySQL this week in the JDBC and Relational Databases forum!
  • Post Reply Bookmark Topic Watch Topic
  • New Topic
programming forums Java Mobile Certification Databases Caching Books Engineering Micro Controllers OS Languages Paradigms IDEs Build Tools Frameworks Application Servers Open Source This Site Careers Other Pie Elite all forums
this forum made possible by our volunteer staff, including ...
Marshals:
  • Campbell Ritchie
  • Jeanne Boyarsky
  • Ron McLeod
  • Paul Clapham
  • Liutauras Vilda
Sheriffs:
  • paul wheaton
  • Rob Spoor
  • Devaka Cooray
Saloon Keepers:
  • Stephan van Hulst
  • Tim Holloway
  • Carey Brown
  • Frits Walraven
  • Tim Moores
Bartenders:
  • Mikalai Zaikin

Getting columns from model

 
Ranch Hand
Posts: 57
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
Hello,

I am writing a RoR application that connects to a couchDB database using couchrest_model.

The definition of my model is the following one:


class BdsDataAuthor < CouchRest::Model::Base
property :id, Integer
property :first_name, String
property :last_name, String
end



I would like to be able to get the list of the model columns, e.g., the result of
BdsDataAuthor.columns would be [id, first_name, last_name]

Is it possible? I saw that active_record provides this kind of method (column_names), but since I am not using active_record...

A solution that I tried is to create a method in the model class (it works but its not the "best" solution...):


def getColumns
columns = Array.new
columns << "id"
columns << "first_name"
columns << "last_name"
end



Any idea/suggestion to solve this problem?

Thank you
 
pie sneak
Posts: 4727
Mac VI Editor Ruby
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
I would suspect you could simply call .attributes on your object to achieve what you need.

Worst case scenario, fire up an irb console and do this to see what methods are available to you:
(YOUR_OBJECT.methods - Object.new.methods).sort

Better yet, add this code to your .irbrc file:


Now you can just open an irb console and simply type the following to get it:
YOUR_OBJECT.m

This saves me lots of time very often!
 
It would give a normal human mental abilities to rival mine. To think it is just a tiny ad:
a bit of art, as a gift, that will fit in a stocking
https://gardener-gift.com
reply
    Bookmark Topic Watch Topic
  • New Topic