class Presto::Errors
Constants
- ATTRIBUTE_JOINER
Public Instance Methods
add(att, msg)
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Adds an error for the given attribute.
errors.add(:name, 'is not valid') if name == 'invalid'
# File lib/presto/errors.rb, line 8 def add(att, msg) fetch(att){self[att] = []} << msg end
count()
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Return the total number of error messages.
errors.count # => 3
# File lib/presto/errors.rb, line 15 def count values.inject(0){|m, v| m + v.length} end
empty?()
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Return true if there are no error messages, false otherwise.
# File lib/presto/errors.rb, line 20 def empty? count == 0 end
full_messages()
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Returns an array of fully-formatted error messages.
errors.full_messages # => ['name is not valid', # 'hometown is not at least 2 letters']
# File lib/presto/errors.rb, line 29 def full_messages inject([]) do |m, kv| att, errors = *kv errors.each {|e| m << "#{att} #{e}"} m end end
on(att)
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Returns the array of errors for the given attribute, or nil if there are no errors for the attribute.
errors.on(:name) # => ['name is not valid'] errors.on(:id) # => nil
# File lib/presto/errors.rb, line 42 def on(att) if v = fetch(att, nil) and !v.empty? v end end