Choice enum

Purpose: list of possible key-value options
Field type in SQL table: int, float, char, varchar

Additional parameters:

values_list
Purpose: list of possible values ​​as an array (regular or associated) 
Possible values: ['green', 'blue', 'red'] or ['green' => 'green', 'blue' => 'blue', 'red' => 'red'] (the second option is preferable) 
Default: []

empty_value
Purpose: the ability to select an empty value for the field 
Possible values: true or text that will be shown as a title for the empty value 
Default: true

foreign_key
Purpose: foreign key, the case when the values ​​for this field are taken from another model, more details in the section Foreign keys
Possible values: model name: 'News', ‘Products'
Default: null

is_parent
Purpose: used together with foreign_key, shows that this foreign key, records of another model are parents for records current model (such as product catalogs). The second model must have a parent type field. For more information, see the Trees section.
Possible values: true, false
Default: false

name_field
Purpose: used together with foreign_key, when displaying a list of possible values ​​in the related model, a field named name is searched for, if this field is missing, then you must specify the field that will be used as a named field
Possible values: field name, for example 'first_name', 'label', 'date' 
Default: 'name'

name_field_extra
Purpose: used together with foreign_key and name_field, allows you to add the value of another field to the name_field field from the related model for easier perception in the list 
Possible values: field name, for example 'last_name', 'age', ‘job’
Default: empty string

display_radio
Purpose: sets the display of field values ​​(only in views) as radio buttons (initially the select tag is displayed) 
Possible values: integer indicating the number of columns with radio buttons
Default: false

long_list
Purpose: used if the list of values ​​is long, then the values ​​are obtained using the search string 
Possible values: true, false
Default: false

show_parent
Purpose: used together with foreign_key and is_parent, additionally shows the name of the parent for the field values 
Possible values: true, false
Default: false

multiple_choice
Purpose: multiple choice, the field is displayed in the form as a table with checkboxes, the number of table columns is set using the value of this parameter (used only for forms built without a model) 
Possible values: positive integer values ​​that indicate the number of columns in the table with checkboxes 
Default: false

order_asc, order_desc
Purpose: used together with foreign_key, allows you to sort the list of foreign key values ​​by one of the model fields, by default, when retrieving foreign key data, sorting occurs by name (or the named field name_field). 
Possible values: string, names of model fields
Default: false

Examples:

['Status', 'enum', 'status', ['values_list' => [
                                 'placed' => 'Postned',
                                 'paied' => 'Paid',
                                 'delivered' => 'Delivered']]]
                                 
['City', 'enum', 'city', ['foreign_key' => 'Cities',
                          'empty_value' => 'All cities',
                          'long_list' => true]]
                          
['Brand', 'enum', 'brand', ['empty_value' => true,
                            'foreign_key' =>'Brands',
                            'order_desc' => 'date']]
                            
['Client', 'enum', 'client', ['foreign_key' => 'Clients',
                              'name_field' => 'first_name',
                              'name_field_extra' => 'last_name']]
                  
['Directory section', 'enum', 'parent', ['foreign_key' => 'Catalogs',
                                         'is_parent' => true,
                                         'show_parent' => true]]