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Class ::xo::Attribute

::xo::Attribute create ... \
           [ -constraint_values constraint_values ] \
           [ -datatype:substdefault (default "text") ] \
           [ -help_text help_text ] \
           [ -multivalued multivalued ] \
           [ -pretty_name pretty_name ] \
           [ -pretty_plural:substdefault (default "") ] \
           [ -required:substdefault (default "false") ] \
           [ -spec spec ] \
           [ -substdefault substdefault ] \
           [ -validator validator ]

Class Relations

• class: ::xotcl::MetaSlot
• superclass: ::xotcl::Attribute
• subclass: ::xo::db::Attribute

::xotcl::MetaSlot create ::xo::Attribute \
     -superclass ::xotcl::Attribute

Methods (to be applied on instances)

• constraint_values (setter)

• datatype (setter)

• help_text (setter)

• init (scripted)

  next
  # provide a default pretty name for the attribute based on message keys
  if {![info exists :pretty_name]} {
    set object_type ${:domain}
    if {[regexp {^::([^:]+)::} $object_type _ head]} {
      set tail [namespace tail $object_type]
      set :pretty_name "#$head.$tail-${:name}#"
      #:log "--created pretty_name = ${:pretty_name}"
    } else {
      error "Cannot determine automatically message key for pretty name.  Use namespaces for classes"
    }
  }

• instvar (alias)

• pretty_name (setter)

• pretty_plural (setter)

• required (setter)

• spec (setter)

• validator (setter)

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