Extend Field Templates
If you find the existing field templates still limited to your need, Modules allow you to add your own field template. In the following sample, we added a field template that provides a Summernote WYSIWYG editor.
Default CKEditor WYSIWYG:
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Customized Summernote WYSIWYG:
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Get the code here in the SDK: https://github.com/gitana/sdk/tree/master/ui/modules/content-model/content-model-field