Class: Sequel::Model::Errors

Inherits:
Hash show all
Defined in:
lib/sequel/model/errors.rb

Overview

Errors represents validation errors, a simple hash subclass with a few convenience methods.

Constant Summary collapse

ATTRIBUTE_JOINER = 
' and '.freeze

Instance Method Summary collapse

Methods inherited from Hash

#&, #case, #sql_expr, #sql_negate, #sql_or, #|, #~

Instance Method Details

#[](k) ⇒ Object

Assign an array of messages for each attribute on access



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# File 'lib/sequel/model/errors.rb', line 9

def [](k)
  has_key?(k) ? super : (self[k] = [])
end

#add(att, msg) ⇒ Object

Adds an error for the given attribute.



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# File 'lib/sequel/model/errors.rb', line 14

def add(att, msg)
  self[att] << msg
end

#count ⇒ Object

Return the total number of error messages.



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# File 'lib/sequel/model/errors.rb', line 19

def count
  values.inject(0){|m, v| m + v.length}
end

#empty? ⇒ Boolean

Return true if there are no error messages, false otherwise.

Returns:

  • (Boolean) 


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# File 'lib/sequel/model/errors.rb', line 24

def empty?
  count == 0
end

#full_messages ⇒ Object

Returns an array of fully-formatted error messages.



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# File 'lib/sequel/model/errors.rb', line 29

def full_messages
  inject([]) do |m, kv| 
    att, errors = *kv
    errors.each {|e| m << "#{Array(att).join(ATTRIBUTE_JOINER)} #{e}"}
    m
  end
end

#on(att) ⇒ Object

Returns the array of errors for the given attribute, or nil if there are no errors for the attribute.



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# File 'lib/sequel/model/errors.rb', line 39

def on(att)
  if v = fetch(att, nil) and !v.empty?
    v
  end
end