A little place of calm: A little place of calm » Blog Archive » CouchDB on Rails (part 5 of ?)
benatkin
· 1 year ago
It's interesting to see how RelaxDB builds on CouchDB. Since CouchDB is so simple, there are many ways to use it, and it's nice to have a library like RelaxDB that provides an example of one way to use it. It looks like RelaxDB makes it easier for people who are used to thinking in terms of tables to begin using CouchDB.
Nice article. I like how you show every step you take, because I can pick up on little unrelated bits of information (like the "-i" option that can be passed to sudo). It feels like I'm watching a screencast, except I can learn at my own pace and headphones aren't required.
Chris Anderson
· 1 year ago
It's really helpful to see the contrast between these frameworks. I'm beginning to think about how best to layer an application-model style wrapper on top of CouchRest. It's good to see what's helpful and what gets in the way, or is missing from these other libraries. Keep up the good work, looking forward to what's next!
aimee
· 1 year ago
@Ben, thank you for your encouragement.
@Chris, i think the most important and useful feature would be to make use of CouchDB's dynamic document structure. If you can make a library that doesn't try to apologise for CouchDB's lack of schema, that would be awesome! :) I think the ability to create its own views when it needs them is a very strong feature.
Randy
· 1 year ago
If you are having problems running the spec, you might need to update your gems.
This is the error I was getting:
undefined method `generate' for "0322b6d0-6270-012b-24ea-0017f2d556c5":String
aimee
· 1 year ago
Hi Randy, the specs are working just fine for me with the RelaxDB. Is your CouchDB server running?
Bruno
· 1 year ago
Hi Aimee. First of all congratulations on your blog. I'm learning a lot. Now I need some help with running the rspec in my project. I'm getting the error: rake aborted! #42000Unknown database 'sysx_development' when i run "rake rspec". This is the database that is in my database.yml file and is setted to mysql. I tried to configure the file like this: development: adapter: couchdb database: sysx_development host: 127.0.0.1 port: 5984 After that, executing rspec asks for a gem called activerecord-couchdb-adapter. But it doesn't exist. Am I going throw the wrong way?
aimee
· 1 year ago
Hi Bruno,
I don't think you can use database.yml together with CouchDB. There is no couchdb adapter that i know of.
If you're using RelaxDB you could try putting the details into your config/environment.rb:
I can't remember whether i maybe had to create an empty MySQL database just so that the database.yml didn't cry.
Bruno
· 1 year ago
Hi Aimee, I configured the app like you sad. But when rails initialize it keeps calling the database.yml. I tried to turn off in enviroment.rb: config.frameworks -= [ :active_record, :active_resource, :action_mailer ] There's a bug in rails that it doens't work very well. I think I'm missing something here. Do you have your source code anywhere so I can look at it? thanks
Daniel Tsadok
· 1 year ago
Great writeup! Aimee - I agree, that setting the properties explicitly is a pain.
I would imagine that creating a view explicitly in CouchDB would let you do a search by title - sort of like creating a stored procedure (but I haven't read parts 6+ yet, so maybe I'm jumping the gun!) Not Rails-y, but it's not designed for Rails...
BiLO
· 9 months ago
very helpful . thank you
Claes Nygren
· 8 months ago
A few things: I think you now have to specify a design_doc in RelaxDB.configure such as:
All Comments
Nice article. I like how you show every step you take, because I can pick up on little unrelated bits of information (like the "-i" option that can be passed to sudo). It feels like I'm watching a screencast, except I can learn at my own pace and headphones aren't required.
@Chris, i think the most important and useful feature would be to make use of CouchDB's dynamic document structure. If you can make a library that doesn't try to apologise for CouchDB's lack of schema, that would be awesome! :) I think the ability to create its own views when it needs them is a very strong feature.
This is the error I was getting:
undefined method `generate' for "0322b6d0-6270-012b-24ea-0017f2d556c5":String
Now I need some help with running the rspec in my project.
I'm getting the error:
rake aborted!
#42000Unknown database 'sysx_development'
when i run "rake rspec". This is the database that is in my database.yml file and is setted to mysql. I tried to configure the file like this:
development:
adapter: couchdb
database: sysx_development
host: 127.0.0.1
port: 5984
After that, executing rspec asks for a gem called activerecord-couchdb-adapter. But it doesn't exist. Am I going throw the wrong way?
I don't think you can use database.yml together with CouchDB. There is no couchdb adapter that i know of.
If you're using RelaxDB you could try putting the details into your config/environment.rb:
RelaxDB.configure(:host => 'localhost', :port => 5984)RelaxDB.use_db 'sysx_development'
I can't remember whether i maybe had to create an empty MySQL database just so that the database.yml didn't cry.
I configured the app like you sad. But when rails initialize it keeps calling the database.yml. I tried to turn off in enviroment.rb:
config.frameworks -= [ :active_record, :active_resource, :action_mailer ]
There's a bug in rails that it doens't work very well. I think I'm missing something here. Do you have your source code anywhere so I can look at it?
thanks
I would imagine that creating a view explicitly in CouchDB would let you do a search by title - sort of like creating a stored procedure (but I haven't read parts 6+ yet, so maybe I'm jumping the gun!) Not Rails-y, but it's not designed for Rails...
I think you now have to specify a design_doc in RelaxDB.configure such as:
RelaxDB.configure :host => "localhost", :port => 5984, :design_doc => "app"
also you may have to do
rake db:migrate
just to create a db/schema.rb, even if you are not using sqlite before you do
rake spec