timezone Field Type
Edit this pageWarning: You are browsing the documentation for Symfony 2.1, which is no longer maintained.
Read the updated version of this page for Symfony 6.3 (the current stable version).
timezone Field Type
The timezone
type is a subset of the ChoiceType
that allows the user
to select from all possible timezones.
The "value" for each timezone is the full timezone name, such as America/Chicago
or Europe/Istanbul
.
Unlike the choice
type, you don't need to specify a choices
or
choice_list
option as the field type automatically uses a large list
of locales. You can specify either of these options manually, but then
you should just use the choice
type directly.
Rendered as | can be various tags (see choice Field Type) |
Overridden Options | |
Inherited options | |
Parent type | choice |
Class | TimezoneType |
Overridden Options
choice_list
default: TimezoneChoiceList
The Timezone type defaults the choice_list to all timezones returned by DateTimeZone::listIdentifiers(), broken down by continent.
Inherited options
These options inherit from the choice type:
multiple
type: Boolean
default: false
If true, the user will be able to select multiple options (as opposed
to choosing just one option). Depending on the value of the expanded
option, this will render either a select tag or checkboxes if true and
a select tag or radio buttons if false. The returned value will be an array.
expanded
type: Boolean
default: false
If set to true, radio buttons or checkboxes will be rendered (depending
on the multiple
value). If false, a select element will be rendered.
preferred_choices
type: array
default: array()
If this option is specified, then a sub-set of all of the options will be moved to the top of the select menu. The following would move the "Baz" option to the top, with a visual separator between it and the rest of the options:
1 2 3 4
$builder->add('foo_choices', 'choice', array(
'choices' => array('foo' => 'Foo', 'bar' => 'Bar', 'baz' => 'Baz'),
'preferred_choices' => array('baz'),
));
Note that preferred choices are only meaningful when rendering as a select
element (i.e. expanded
is false). The preferred choices and normal choices
are separated visually by a set of dotted lines (i.e. -------------------
).
This can be customized when rendering the field:
1
{{ form_widget(form.foo_choices, { 'separator': '=====' }) }}
1
<?php echo $view['form']->widget($form['foo_choices'], array('separator' => '=====')) ?>
empty_value
type: string
or Boolean
This option determines whether or not a special "empty" option (e.g. "Choose an option")
will appear at the top of a select widget. This option only applies if both
the expanded
and multiple
options are set to false.
Add an empty value with "Choose an option" as the text:
1 2 3
$builder->add('states', 'choice', array( 'empty_value' => 'Choose an option', ));
Guarantee that no "empty" value option is displayed:
1 2 3
$builder->add('states', 'choice', array( 'empty_value' => false, ));
If you leave the empty_value
option unset, then a blank (with no text)
option will automatically be added if and only if the required
option
is false:
1 2 3 4
// a blank (with no text) option will be added
$builder->add('states', 'choice', array(
'required' => false,
));
These options inherit from the field type:
required
type: Boolean
default: true
If true, an HTML5 required attribute will be rendered. The corresponding
label
will also render with a required
class.
This is superficial and independent from validation. At best, if you let Symfony guess your field type, then the value of this option will be guessed from your validation information.
label
type: string
default: The label is "guessed" from the field name
Sets the label that will be used when rendering the field. The label can also be directly set inside the template:
1
{{ form_label(form.name, 'Your name') }}
read_only
2.1
The read_only
option was changed in 2.1 to render as a readonly
HTML attribute. Previously, it rendered as a disabled
attribute.
Use the disabled option if you need the old behavior.
type: Boolean
default: false
If this option is true, the field will be rendered with the readonly
attribute so that the field is not editable.
disabled
2.1
The disabled
option is new in version 2.1
type: boolean
default: false
If you don't want a user to modify the value of a field, you can set
the disabled option to true. Any submitted value will be ignored.
error_bubbling
type: Boolean
default: false
unless the form is compound
If true, any errors for this field will be passed to the parent field or form. For example, if set to true on a normal field, any errors for that field will be attached to the main form, not to the specific field.
2.1
The error_mapping
option is new to Symfony 2.1.
error_mapping
type: array
default: empty
This option allows you to modify the target of a validation error.
Imagine you have a custom method named matchingCityAndZipCode
that validates
whether the city and zip code match. Unfortunately, there is no "matchingCityAndZipCode"
field in your form, so all that Symfony can do is display the error on top
of the form.
With customized error mapping, you can do better: map the error to the city field so that it displays above it:
1 2 3 4 5 6 7 8
public function setDefaultOptions(OptionsResolverInterface $resolver)
{
$resolver->setDefaults(array(
'error_mapping' => array(
'matchingCityAndZipCode' => 'city',
),
));
}
Here are the rules for the left and the right side of the mapping:
- The left side contains property paths.
- If the violation is generated on a property or method of a class, its path is simply "propertyName".
- If the violation is generated on an entry of an
array
orArrayAccess
object, the property path is[indexName]
. - You can construct nested property paths by concatenating them, separating
properties by dots. For example:
addresses[work].matchingCityAndZipCode
- The left side of the error mapping also accepts a dot
.
, which refers to the field itself. That means that any error added to the field is added to the given nested field instead. - The right side contains simply the names of fields in the form.
mapped
type: boolean
If you wish the field to be ignored when reading or writing to the object, you
can set the mapped
option to false
.