Avoid ajax reloads when URLs differ in irrelevant ways,
e.g. admin/?locale=de vs. admin?locale=de.
This caused problems with the translatable module
reloading page content where it didn't need to,
because some previous robustness patches to the same problem
didn't apply (they only removed trailing slashes, ignoring
query parameter strings). The visible problem for this was
a broken tree panel, because it was ajax-loaded in parallel
with its container. Depending on ajax response order,
this would break the inner panel (in this case the tree),
since its original container was replaced with a new DOM.
In certain cases (e.g. with the mi_NZ locale),
the i18n system would regard a langage as already
loaded if it was restored from a cached, but empty
translation list (through Zend_Translate).
This was due to the cache key being generated
based solely on the content, rather than taking
other options like the locale into account.
This is reverting templates back to pre-3.0 conventions,
which were dominated by XHTML templates.
HTML5 allows both self-closing and unclosed tags,
so opting for self-closing to achieve maximum compatibility.
The classnames on the add-new button and breadcrumbs were not
translated due to the use of singular_name() instead of
i18n-singular_name() in GridFieldAddNewButton and GridFieldDetailForm.
In CMSBreadcrumbs.ss the (TopLevel)Controller is not recognized within
the Breadcrumbs loop, so the class that is used in css to style the
icon cannot be created. Moving the construction outside the loop will
remedy this. As far as I can see this works within the CMS.
- Removed redundant "module" relationship, has_one is already present in Student->Project relationship
- Simplified FirstName/LastName to Name on Student and Mentor models, makes for less sample code
- Removed detail views for Student and Mentor, as they don't add much educational value
- Fixed indentation in code examples
- Using GridField relation editor, listing students on relation instead of holder
- Added optional exercises for the readers
- Added conclusion, explaining when to use Page vs. DataObject
- Updated sample data to GSOC '12 rather than '07, anonymized and randomised a bit
- Thanks to Naomi Guyer for contributing!
