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# frozen-string-literal: true
module Sequel
class Model
# Errors represents validation errors, a simple hash subclass
# with a few convenience methods.
class Errors < ::Hash
# Adds an error for the given attribute.
#
# errors.add(:name, 'is not valid') if name == 'invalid'
def add(att, msg)
fetch(att){self[att] = []} << msg
end
# Return the total number of error messages.
#
# errors.count # => 3
def count
values.inject(0){|m, v| m + v.length}
end
# Return true if there are no error messages, false otherwise.
def empty?
count == 0
end
# Returns an array of fully-formatted error messages.
#
# errors.full_messages
# # => ['name is not valid',
# # 'hometown is not at least 2 letters']
#
# If the message is a Sequel::LiteralString, it will be used literally, without the column name:
#
# errors.add(:name, Sequel.lit("Album name is not valid"))
# errors.full_messages
# # => ['Album name is not valid']
def full_messages
inject([]) do |m, kv|
att, errors = *kv
errors.each {|e| m << (e.is_a?(LiteralString) ? e : full_message(att, e))}
m
end
end
# 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
def on(att)
if v = fetch(att, nil) and !v.empty?
v
end
end
private
# Create full error message to use for the given attribute (or array of attributes)
# and error message. This can be overridden for easier internalization.
def full_message(att, error_msg)
att = att.join(' and ') if att.is_a?(Array)
"#{att} #{error_msg}"
end
end
end
end
Version data entries
46 entries across 46 versions & 2 rubygems