I have the following in an initializer in a rails app that uses Twitter bootstrap so that it removes the div.field_with_errors that rails applies when validation fails on a field but also the initializer adds the help/validation
text after the erroneous input field:
require 'nokogiri'
ActionView::Base.field_error_proc = Proc.new do |html_tag, instance|
html = %(<div class="field_with_errors">#{html_tag}</div>).html_safe
form_fields = [
'textarea',
'input',
'select'
]
elements = Nokogiri::HTML::DocumentFragment.parse(html_tag).css("label, " + form_fields.join(', '))
elements.each do |e|
if e.node_name.eql? 'label'
html = %(#{e}).html_safe
elsif form_fields.include? e.node_name
if instance.error_message.kind_of?(Array)
html = %(#{e}<span class="help-inline"> #{instance.error_message.join(',')}</span>).html_safe
else
html = %(#{e}<span class="help-inline"> #{instance.error_message}</span>).html_safe
end
end
end
html
end
This works fine but I also need
to apply the .error class
to the surrounding div.control-group for each error.
My initializer currently gives the following output:
<div class="control-group">
<label class="control-label" for="post_message">Message</label>
<div class="controls">
<input id="post_message" name="post[message]" required="required" size="30" type="
text" value="" /><span class="help-inline"> can't be blank</span>
</div>
</div>
but I need something adding
to my initializer so that it adds the .error class
to the div.control-group like so:
<div class="control-group error">
<label class="control-label" for="post_message">Message</label>
<div class="controls">
<input id="post_message" name="post[message]" required="required" size="30" type="
text" value="" /><span class="help-inline"> can't be blank</span>
</div>
</div>
The solution will probably need
to allow for the fact that each validation error could have more than one label and input that are all within the same div.control-group (eg radio buttons / checkboxes / 2
text fields side by side).
I assume it needs some sort of e.at_xpath()
to find the div.control-group parent and add the .error class
to it but I'm not sure how
to do this.
Can anyone help?
PS This may all be possible using the formtastic or simple_form gems but I'd rather just use my own html if possible.
EDIT
If I put e['class'] = 'foo' in the if e.node_name.eql? 'label' section then it applies the class
to the label so I think I just need
to find the parent tag of e and then apply an .error class
to it but I can't figure out what the xpath would be
to get from label
to its div.control-group parent; no combination of dots, slashes or whatever seems
to work but xpath isn't my strong point.
