On 15.02.2011, at 01:37, craayzie wrote: > Below is the migration that finally did the trick! There wasn't really > a need to have an index on the name attribute anyways since it'll > always require the site_id.
The uniqueness of a field in rails is a programatic constrain in ruby, not a constrain on the database layer. The vhost.yml file takes care of this and evaluates this. https://github.com/saturnflyer/radiant-vhost-extension/blob/master/lib/vhost/site_scoped_model_extensions.rb#L12 > > I'm still interested in Haselwanter's note about how the config/ > vhost.yml file alone should have taken care of this. Am I missing > something obvious here? yes: There is some code in the rake radiant:extensions:vhost:apply_site_scoping which alters special index behaviour. At least for snippets it should just work https://github.com/saturnflyer/radiant-vhost-extension/blob/master/lib/tasks/add_site_columns.rb#L45 > > class CleanUpSnippetConstraints < ActiveRecord::Migration > def self.up > remove_index :snippets, :name => "name" > end > > def self.down > add_index "snippets", ["name"], :name => "name", :unique => true > end > end > > > On Feb 14, 2:02 pm, craayzie <flesh...@gmail.com> wrote: >> The migration to remove the unique constraint works great (below) but >> when I try to roll it back I get the following from sqlite: >> >> $ rake db:rollback >> (in /Users/username/Sites/heroku) >> == CleanUpSnippetConstraints1: reverting >> ===================================== >> -- remove_index(:snippets, {:name=>"index_snippets_on_name"}) >> -> 0.0010s >> -- add_index("snippets", ["name"], {:unique=>true, :name=>"name"}) >> rake aborted! >> An error has occurred, this and all later migrations canceled: >> >> SQLite3::ConstraintException: indexed columns are not unique: CREATE >> UNIQUE INDEX "name" ON "snippets" ("name") >> >> $ cat db/migrate/20091003095746_clean_up_snippet_constraints1.rb >> class CleanUpSnippetConstraints1 < ActiveRecord::Migration >> def self.up >> remove_index :snippets, :name => "name" >> add_index :snippets, ["name"], :name => >> "index_snippets_on_name", :unique => false >> end >> >> def self.down >> remove_index :snippets, :name => "index_snippets_on_name" >> add_index "snippets", ["name"], :name => "name", :unique => true >> end >> end >> >> $ rake db:migrate >> (in /Users/username/Sites/heroku) >> == CleanUpSnippetConstraints1: migrating >> ===================================== >> -- remove_index(:snippets, {:name=>"name"}) >> -> 0.0004s >> -- add_index(:snippets, ["name"], >> {:unique=>false, :name=>"index_snippets_on_name"}) >> -> 0.0753s >> == CleanUpSnippetConstraints1: migrated (0.0760s) >> ============================ -- DI Edmund Haselwanter, edm...@haselwanter.com, http://edmund.haselwanter.com/ http://www.iteh.at | http://facebook.com/iTeh.solutions | http://at.linkedin.com/in/haselwanteredmund
