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Initializer to override default field with errors (rails 5.0.1)
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<!-- path: views/layouts/ --> | |
<% if object.errors.any? %> | |
<% object.errors.full_messages.each do |msg| %> | |
<%= | |
content_tag :div, :id => "has_errors", :style => "padding:3px; margin:0 20vw; background-color:rgba(246, 138, 138, 0.7); border:solid rgba(246, 138, 138, 1) 1px; border-radius:12px; text-align:center;" do | |
concat(content_tag :p, msg) | |
end | |
-%> | |
<% end %> | |
<script type="text/javascript"> | |
<%# | |
# this: | |
# window.onload = scrollToError; | |
# function scrollToError(){ window.location.hash = '#has_errors'; }; | |
# or: | |
%> | |
window.onload = scrollToMiddle("#has_errors"); | |
function scrollToMiddle(id) { | |
var elem_position = $(id).offset().top; | |
var window_height = $(window).height(); | |
var y = elem_position - window_height/2; | |
window.scrollTo(0,y); | |
} | |
</script> | |
<% end %> |
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module ActiveModel::Conversion | |
attr_accessor :skip_field_error_wrapper | |
end # to skip additional class-wrapper on error | |
# usage: | |
# @user.skip_field_error_wrapper = true | |
# form_for(@user) do |f|... | |
ActionView::Base.field_error_proc = Proc.new do |html_tag, instance| | |
class_attr_index = html_tag.index('class="') | |
first_tag_end_index = html_tag.index('>') | |
if class_attr_index.nil? || first_tag_end_index > class_attr_index | |
html_tag.insert(first_tag_end_index, ' class="field_error"') | |
elsif instance.object && instance.object.skip_field_error_wrapper | |
html_tag.html_safe | |
else | |
html_tag.insert(class_attr_index + 7, 'field_error ') | |
end | |
end | |
# compilation from http://stackoverflow.com/questions/5267998/rails-3-field-with-errors-wrapper-changes-the-page-appearance-how-to-avoid-t |
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<!-- examplery form --> | |
<% content_for :form do %> | |
<%= form_for(something) do |f| %> | |
<%= render 'layouts/error_messages', object: f.object -%> | |
<% end %> | |
<% end %> |
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