自定义error_messages_for定制校验信息

最新推荐文章于 2025-05-19 21:05:06 发布

最新推荐文章于 2025-05-19 21:05:06 发布 · 317 阅读

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本文介绍了一个Ruby模块，该模块提供了一种优雅的方式来处理并显示对象的验证错误消息。通过使用此模块，可以轻松地收集和格式化多个对象的错误信息，并将其呈现为易于理解的HTML格式。

ruby 代码

module ApplicationHelper
def error_messages_for(*params)
options = params.last.is_a?(Hash) ? params.pop.symbolize_keys : {}
objects = params.collect {|object_name| instance_variable_get("@#{object_name}") }.compact
count = objects.inject(0) {|sum, object| sum + object.errors.count }
unless count.zero?
html = {}
[:id, :class].each do |key|
if options.include?(key)
value = options[key]
html[key] = value unless value.blank?
else
html[key] = 'errorExplanation'
end
end
header_message = ""#"#{pluralize(count, 'error')} prohibited this #{(options[:object_name] || params.first).to_s.gsub('_', ' ')} from being saved"
#error_messages = objects.map {|object| object.errors.full_messages.map {|msg| content_tag(:li, msg) } }
error_messages = objects.map do |object|
full_messages = []
object.errors.each do |attr,msg|
full_messages << msg unless msg.nil? || msg.blank?
end
full_messages.map{|msg| content_tag(:li,msg)}
end
content_tag(:div,
content_tag(options[:header_tag] || :h2, header_message) <<
content_tag(:p, '发生以下错误:') <<
content_tag(:ul, error_messages),
html
)
else
''
end
end
end