Limiting Forms

In version 3.2 and greater we have unified the ability to search for forms by limiting the values of their fields. This is used in, for example:

• I2CE_Form::search()
• I2CE_Form::listFields()
• Form Relationships
• Report Limits

Limit Styles

There are many ways that you may wish to limit the values of a particular field, we refer to these as a limit style. Recall that every field is has a type, such as INT or INT_LIST, which translates to a class, such as I2CE_FormField_INT or I2CE_FormField_INT_LIST, all of which sub-class I2CE_FormField. A type is made available to some sub-class (as well as well of all of its sub-classes) of I2CE_FormField.

Most of these limit style, and their attendant code, can be found in the module form-limits.

Existing Styles

• I2CE_FormField
  • null
  • not_null
  • max_parent
  • min_parent
  • max_parent_form
  • min_parent_form
• I2CE_FormField_BOOL
  • truefalse
  • true
  • false
• I2CE_FormField_DB_DATE
  • greaterthan_now
  • lessthan_now
• I2CE_FormField_DB_INT
  • between
  • equals
  • in
  • greaterthan
  • greaterthan_equals
  • lessthan
  • lessthan_equals
• I2CE_FormField_DB_STRING
  • between
  • equals
  • in
  • greaterthan
  • greaterthan_equals
  • lessthan
  • lessthan_equals
  • like
• I2CE_FormField_DB_TEXT
  • between
  • equals
  • in
  • greaterthan
  • greaterthan_equals
  • lessthan
  • lessthan_equals
  • like
• I2CE_FormField_YESNO
  • yesno
  • yes
  • no