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Fields, Widgets and Constraints for Grok

Project Description

megrok.form is a helper package that provides some useful fields, widgets and constraints for Grok.


  • Email, a TextLine field with a default contraint
  • HTML, a Text field that uses z3c.widget.tiny
  • File, from collective.namedfile
  • Image, from collective.namedfile
  • BlobFile, from collective.namedblobfile
  • BlobImage, from collective.namedblobfile


megrok.form overrides the default widgets for:

  • zope.interface.schema.Date (using zc.datetimewidget.widget.DateWidget)
  • zope.interface.schema.Datetime (using zc.datetimewidget.widget.DatetimeWidget)

And add new widgets for Image and File (from collective.namedfile).

Validators / Constraints

megrok.form add constraints for:

  • SSN
  • US Phone Numbers
  • International Phone Numbers
  • Zip Code
  • URL
  • Email


To use megrok.form under Grok all you need is to install megrok.form as an egg and include it’s zcml. The best place to do this is to make megrok.form a dependency of your application by adding it to your install_requires list in setup.cfg. If you used grokprojet to create your application setup.cfg is located in the project root. It should look something like this:

                  # Add extra requirements here

Then include megrok.form in your configure.zcml. If you used grokproject to create your application it’s at src/<projectname>/configure.zcml. Add the include line after the include line for grok, but before the grokking of the current package. It should look something like this:

<include package="grok" />
<include package="megrok.form" />
<grok:grok package="." />

Then run bin/buildout again. You should now see buildout saying something like:

Getting distribution for 'megrok.form'.
Got megrok.form 0.2.2.

That’s all.

Using Blob Storage

To use blob storage you need to change zodb definition in your parts/zopectl/zope.conf like this:

      path /path_to_your_app/parts/data/Data.fs
    blob-dir /path_to_your_app/parts/data/blobs

The blob-dir specifies where you want to store blobs.


  • Dirceu Pereira Tiegs (dirceutiegs at gmail dot com)
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Release History

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File Name & Checksum SHA256 Checksum Help Version File Type Upload Date
megrok.form-0.2.5-py2.4.egg (20.9 kB) Copy SHA256 Checksum SHA256 2.4 Egg Apr 24, 2008
megrok.form-0.2.5.tar.gz (9.9 kB) Copy SHA256 Checksum SHA256 Source Apr 24, 2008

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