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Adding support for scopes on unique validation

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This commit is contained in:
Sam Lown 2011-04-08 14:36:29 +02:00
parent 760d855845
commit 1d37f12982
8 changed files with 123 additions and 48 deletions
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23
lib/couchrest/model/validations/uniqueness.rb
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@ -14,7 +14,14 @@ module CouchRest
end
def validate_each(document, attribute, value)
view_name = options[:view].nil? ? "by_#{attribute}" : options[:view]
keys = [attribute]
unless options[:scope].nil?
keys = (options[:scope].is_a?(Array) ? options[:scope] : [options[:scope]]) + keys
end
values = keys.map{|k| document.send(k)}
values = values.first if values.length == 1
view_name = options[:view].nil? ? "by_#{keys.join('_and_')}" : options[:view]
model = (document.respond_to?(:model_proxy) && document.model_proxy ? document.model_proxy : @model)
# Determine the base of the search
@ -22,18 +29,20 @@ module CouchRest
if base.respond_to?(:has_view?) && !base.has_view?(view_name)
raise "View #{document.class.name}.#{options[:view]} does not exist!" unless options[:view].nil?
model.view_by attribute
model.view_by *keys, :allow_nil => true
end
docs = base.view(view_name, :key => value, :limit => 2, :include_docs => false)['rows']
return if docs.empty?
rows = base.view(view_name, :key => values, :limit => 2, :include_docs => false)['rows']
return if rows.empty?
unless document.new?
return if docs.find{|doc| doc['id'] == document.id}
return if rows.find{|row| row['id'] == document.id}
end
if docs.length > 0
document.errors.add(attribute, :taken, options.merge(:value => value))
if rows.length > 0
opts = options.merge(:value => value)
opts.delete(:scope) # Has meaning with I18n!
document.errors.add(attribute, :taken, opts)
end
end