Variable
========

Class that describes a variable that you can search for.

Parameters with the prefix "gui__" will be passed along downstream to the tri.form.Field instance if applicable. This can be used to tweak the basic style interface.

Refinable members
-----------------

* `after`
* `attr`
* `choices`
* `extra`
* `freetext`
* `gui`
* `gui_op`
* `model`
* `model_field`
* `name`
* `op_to_q_op`
* `show`
* `value_to_q`
* `value_to_q_lookup`

Defaults
^^^^^^^^

* `gui__required`
    * `False`
* `gui__show`
    * `False`
* `gui_op`
    * `=`
* `show`
    * `True`

Shortcuts
---------

`boolean`
^^^^^^^^^

`boolean_tristate`
^^^^^^^^^^^^^^^^^^

`case_sensitive`
^^^^^^^^^^^^^^^^

`choice`
^^^^^^^^

Field that has one value out of a set.
        :type choices: list

`choice_queryset`
^^^^^^^^^^^^^^^^^

Field that has one value out of a set.
        :type choices: django.db.models.QuerySet

`date`
^^^^^^

`datetime`
^^^^^^^^^^

`decimal`
^^^^^^^^^

`email`
^^^^^^^

`float`
^^^^^^^

`foreign_key`
^^^^^^^^^^^^^

`integer`
^^^^^^^^^

`many_to_many`
^^^^^^^^^^^^^^

`multi_choice`
^^^^^^^^^^^^^^

Field that has one value out of a set.
        :type choices: list

`multi_choice_queryset`
^^^^^^^^^^^^^^^^^^^^^^^

`text`
^^^^^^

`time`
^^^^^^

`url`
^^^^^