用轨道中的茧宝石限制动态字段3
问题描述:
我正在使用茧宝石在我的webform中添加动态字段,现在我想限制它们只添加六个字段,我该怎么做?用轨道中的茧宝石限制动态字段3
下面是我用我的助手代码:
def link_to_add_association(*args, &block)
if block_given?
f = args[0]
association = args[1]
html_options = args[2] || {}
link_to_add_association(capture(&block), f, association, html_options)
else
name = args[0]
f = args[1]
association = args[2]
html_options = args[3] || {}
html_options[:class] = [html_options[:class], "add_fields"].compact.join(' ')
html_options[:'data-association'] = association.to_s.singularize
html_options[:'data-associations'] = association.to_s.pluralize
new_object = f.object.class.reflect_on_association(association).klass.new
html_options[:'data-template'] = CGI.escapeHTML(render_association(association, f, new_object)).html_safe
link_to(name, '#', html_options)
end
末
感谢您的帮助提前。
答
你可以在插入之前和之后使用JavaScript和Cocoon帮助器方法。所以你可以做什么
.bind('cocoon:after-insert', function() {
/* ...
1. check to see if the number of nested fields added is equal to what you want
2. if it is equal, hide the link_to_add_association link
... */
})