Ok. Below I've posted what I have. It's really long, but the bit in italics is what Summernote added in, so it's probably standard stuff.
It looks to me like a standard form with a text editor added in. But when I go to the 'adminadd' action, and get it to dump to POSTed array, the 'Address' field of the 'data' is just empty.
I don't really even know where to start - is there something you have to do to get Summernote to pass the data through? Can anyone even link me to some documentation on this? I haven't been able to find anything that helps - the link from the Summernote documentation to a php example isn't working for me.
<form action="adminadd" id="RetailerAdminaddForm" enctype="multipart/form-data" method="post" accept-charset="utf-8">
<input name="_method" value="POST" type="hidden">
<div class="form-group">
<label for="RetailerName">Business Name</label>
<input name="data[Retailer][name]" id="RetailerName" type="text">
</div>
<div class="form-group">
<label for="RetailerAddress" class="control-label col-md-4">Address</label>
<input style="display: none;" name="data[Retailer][address]" class="summernote col-md-8 form-control" id="RetailerAddress" type="text">
<div class="note-editor">
<div class="note-dialog">
<div class="note-image-dialog modal" aria-hidden="false">
<div class="modal-dialog">
<div class="modal-content">
<div class="modal-header">
<button type="button" class="close" data-dismiss="modal" aria-hidden="true" tabindex="-1">×</button>
<h4>Insert Image</h4>
</div>
<div class="modal-body">
<div class="row-fluid">
<div class="note-dropzone span12">Drag an image here</div>
<div>or if you prefer...</div>
<input class="note-image-input" type="file">
</div>
</div>
</div>
</div>
</div>
<div class="note-link-dialog modal" aria-hidden="false">
<div class="modal-dialog">
<div class="modal-content">
<div class="modal-header">
<button type="button" class="close" data-dismiss="modal" aria-hidden="true" tabindex="-1">×</button>
<h4>Edit Link</h4>
</div>
<div class="modal-body">
<div class="row-fluid">
<div class="form-group">
<label>Text to display</label>
<span class="note-link-text form-control input-xlarge uneditable-input"></span>
</div>
<div class="form-group">
<label>To what URL should this link go?</label>
<input class="note-link-url form-control span12" type="text">
</div>
</div>
</div>
<div class="modal-footer">
<button href="#" class="btn btn-primary note-link-btn disabled" disabled="disabled">Link</button>
</div>
</div>
</div>
</div>
<div class="note-help-dialog modal fade" aria-hidden="false">
<div class="modal-dialog">
<div class="modal-content">
<div class="modal-body">
<div class="modal-background">
<a class="modal-close pull-right" data-dismiss="modal" aria-hidden="true" tabindex="-1">Close</a>
<div class="title">Keyboard shortcuts</div>
<table class="note-shortcut-layout"><tbody><tr><td><table class="note-shortcut"><thead><tr><th></th><th>Action</th></tr></thead><tbody><tr><td>? + Z</td><td>Undo</td></tr><tr><td>? + ? + Z</td><td>Redo</td></tr><tr><td>? + ]</td><td>Indent</td></tr><tr><td>? + [</td><td>Outdent</td></tr><tr><td>? + K</td><td>Insert Link</td></tr><tr><td>? + ENTER</td><td>Insert Horizontal Rule</td></tr></tbody></table></td><td><table class="note-shortcut"><thead><tr><th></th><th>Text formatting</th></tr></thead><tbody><tr><td>? + B</td><td>Toggle Bold</td></tr><tr><td>? + I</td><td>Toggle Italic</td></tr><tr><td>? + U</td><td>Toggle Underline</td></tr><tr><td>? + ? + S</td><td>Toggle Strike</td></tr><tr><td>? + \</td><td>Remove Font Style</td></tr></tbody></table></td></tr><tr><td><table class="note-shortcut"><thead><tr><th></th><th>Document Style</th></tr></thead><tbody><tr><td>? + NUM0</td><td>Normal Text</td></tr><tr><td>? + NUM1</td><td>Heading 1</td></tr><tr><td>? + NUM2</td><td>Heading 2</td></tr><tr><td>? + NUM3</td><td>Heading 3</td></tr><tr><td>? + NUM4</td><td>Heading 4</td></tr><tr><td>? + NUM5</td><td>Heading 5</td></tr><tr><td>? + NUM6</td><td>Heading 6</td></tr></tbody></table></td><td><table class="note-shortcut"><thead><tr><th></th><th>Paragraph formatting</th></tr></thead><tbody><tr><td>? + ? + L</td><td>Align Left</td></tr><tr><td>? + ? + E</td><td>Align Center</td></tr><tr><td>? + ? + R</td><td>Align Right</td></tr><tr><td>? + ? + J</td><td>Justify Full</td></tr><tr><td>? + ? + NUM7</td><td>Ordered List</td></tr><tr><td>? + ? + NUM8</td><td>Unordered List</td></tr></tbody></table></td></tr></tbody></table>
<p class="text-center"><a href="//hackerwins.github.io/summernote/" target="_blank">Summernote v0.3</a> · <a href="//github.com/HackerWins/summernote" target="_blank">Project</a> · <a href="//github.com/HackerWins/summernote/issues" target="_blank">Issues</a></p>
</div>
</div>
</div>
</div>
</div>
</div>
<div class="note-handle">
<div style="display: none;" class="note-control-selection"><div class="note-control-selection-bg"></div><div class="note-control-holder note-control-nw"></div><div class="note-control-holder note-control-ne"></div><div class="note-control-holder note-control-sw"></div><div class="note-control-sizing note-control-se"></div><div class="note-control-selection-info"></div></div>
</div>
<div class="note-popover">
<div class="note-link-popover popover bottom in" style="display: none;"><div class="arrow"></div><div class="popover-content note-link-content"><a href="http://www.google.com" target="_blank">www.google.com</a> <div class="note-insert btn-group"><button data-original-title="Edit" type="button" class="btn btn-default-outline btn-sm btn-small" title="" data-event="showLinkDialog" tabindex="-1"><i class="fa fa-edit"></i></button><button data-original-title="Unlink" type="button" class="btn btn-default-outline btn-sm btn-small" title="" data-event="unlink" tabindex="-1"><i class="fa fa-unlink"></i></button></div></div></div><div class="note-image-popover popover bottom in" style="display: none;"><div class="arrow"></div><div class="popover-content note-image-content"><div class="btn-group"><button data-original-title="Resize Full" type="button" class="btn btn-default-outline btn-sm btn-small" title="" data-event="resize" data-value="1" tabindex="-1"><i class="fa fa-resize-full"></i></button><button data-original-title="Resize Half" type="button" class="btn btn-default-outline btn-sm btn-small" title="" data-event="resize" data-value="0.5" tabindex="-1">½</button><button data-original-title="Resize Thrid" type="button" class="btn btn-default-outline btn-sm btn-small" title="" data-event="resize" data-value="0.33" tabindex="-1">?</button><button data-original-title="Resize Quarter" type="button" class="btn btn-default-outline btn-sm btn-small" title="" data-event="resize" data-value="0.25" tabindex="-1">¼</button></div><div class="btn-group"><button data-original-title="Float Left" type="button" class="btn btn-default-outline btn-sm btn-small" title="" data-event="float" data-value="left" tabindex="-1"><i class="fa fa-align-left"></i></button><button data-original-title="Float Right" type="button" class="btn btn-default-outline btn-sm btn-small" title="" data-event="float" data-value="right" tabindex="-1"><i class="fa fa-align-right"></i></button><button data-original-title="Float None" type="button" class="btn btn-default-outline btn-sm btn-small" title="" data-event="float" data-value="none" tabindex="-1"><i class="fa fa-reorder"></i></button></div></div></div>
</div>
<div class="note-toolbar btn-toolbar">
<div class="note-style btn-group"><button data-original-title="Bold (Ctrl+B)" type="button" class="btn btn-default-outline btn-sm btn-small" title="" data-shortcut="Ctrl+B" data-mac-shortcut="?+B" data-event="bold" tabindex="-1"><i class="fa fa-bold"></i></button><button data-original-title="Italic (Ctrl+I)" type="button" class="btn btn-default-outline btn-sm btn-small" title="" data-shortcut="Ctrl+I" data-mac-shortcut="?+I" data-event="italic" tabindex="-1"><i class="fa fa-italic"></i></button><button data-original-title="Underline (Ctrl+U)" type="button" class="btn btn-default-outline btn-sm btn-small" title="" data-shortcut="Ctrl+U" data-mac-shortcut="?+U" data-event="underline" tabindex="-1"><i class="fa fa-underline"></i></button><button data-original-title="Remove Font Style (Ctrl+\)" type="button" class="btn btn-default-outline btn-sm btn-small" title="" data-shortcut="Ctrl+\" data-mac-shortcut="?+\" data-event="removeFormat" tabindex="-1"><i class="fa fa-eraser"></i></button></div>
</div>
<div style="height: 140px;" class="note-editable" contenteditable="true">123 Retail Street<br>Shoptown<br></div>
<div class="note-statusbar"><div class="note-resizebar"><div class="note-fa fa-bar"></div><div class="note-fa fa-bar"></div><div class="note-fa fa-bar"></div></div></div> </div>
</div>
<input class="btn btn-primary" value="Add Retailer" type="submit"></input>
</form>