haml rails forms - html appearing raw instead of rendering as html

Question

I'm using haml 3.1.4 and haml-rails 0.3.5

The issue I'm having only occurs on the server (production) and locally (test) but not in development (both appear to be using the same gem versions)

=form_for @thing, :remote => true do |f|
  =hidden_field_tag :template, 'thing'
  %table
    %thead
      %tr
        %th
          Name
        %th
          =image_tag 'cancel.png'
    %tbody
      =f.fields_for :items do |item_fields|
        %tr
          %td
            =f.text_field :name
          %td
  =f.submit 'Save'

it outputs the following html save text:

<input type='hidden' value='thing' /><table><thead><tr><th>Name</th><th><img src='cancel.png.....' /></tr></thead>

followed be the rendered html above.

How can I narrow down what the differences are between test/production and development?

Any ideas? :)

EDIT: It might be worth mentioning that this is the second form for '@thing' on the page. The first one renders fine, the second one is where the issue is.

Answer 1

I have a couple theories.

Whitespace is very important in haml. Is it possible you have a tab somewhere and whitespaces elsewhere?

Do both your form_fors have remote: true? That creates some extra div output which I suppose could confuse the DOM if it's reusing ids.

Are you sure you are using the = on form_for because without it, it won't output the HTML form tags.

I'm afraid I'm just guessing, and none of these would explain why it works in development.

Perhaps it helps...