发布于 2015-08-27 16:50:41 | 176 次阅读 | 评论: 0 | 来源: 网络整理
This field type allows the user to modify data that represents a specific
date and time (e.g. 1984-06-05 12:15:30).
Can be rendered as a text input or select tags. The underlying format of the
data can be a DateTime object, a string, a timestamp or an array.
| Underlying Data Type | can be DateTime, string, timestamp, or array (see the input option) |
| Rendered as | single text box or three select fields |
| Options | |
| Inherited options | |
| Parent type | form |
| Class | DateTimeType |
type: integer or string default: IntlDateFormatter::MEDIUM
Defines the format option that will be passed down to the date field.
See the date type’s format option
for more details.
type: string default: choice
The basic way in which this field should be rendered. Can be one of the following:
type: array default: 1 to 31
List of days available to the day field type. This option is only relevant
when the widget option is set to choice:
'days' => range(1,31)
2.6 新版功能: The placeholder option was introduced in Symfony 2.6 in favor of
empty_value, which is available prior to 2.6.
2.3 新版功能: Since Symfony 2.3, empty values are also supported if the expanded
option is set to true.
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 the
multiple option is set to false.
Add an empty value with “Choose an option” as the text:
$builder->add('states', 'choice', array(
'placeholder' => 'Choose an option',
));
Guarantee that no “empty” value option is displayed:
$builder->add('states', 'choice', array(
'placeholder' => false,
));
If you leave the placeholder option unset, then a blank (with no text)
option will automatically be added if and only if the required option
is false:
// a blank (with no text) option will be added
$builder->add('states', 'choice', array(
'required' => false,
));
type: string default: SymfonyComponentFormExtensionCoreTypeDateTimeType::HTML5_FORMAT
If the widget option is set to single_text, this option specifies
the format of the input, i.e. how Symfony will interpret the given input
as a datetime string. It defaults to the RFC 3339 format which is used
by the HTML5 datetime field. Keeping the default value will cause the
field to be rendered as an input field with type="datetime".
type: array default: 0 to 23
List of hours available to the hours field type. This option is only relevant
when the widget option is set to choice.
2.6 新版功能: The html5 option was introduced in Symfony 2.6.
type: boolean default: true
If this is set to true (the default), it’ll use the HTML5 type (date, time
or datetime) to render the field. When set to false, it’ll use the text type.
This is useful when you want to use a custom JavaScript datapicker, which often requires a text type instead of an HTML5 type.
type: string default: datetime
The format of the input data - i.e. the format that the date is stored on your underlying object. Valid values are:
string (e.g. 2011-06-05 12:15:00)datetime (a DateTime object)array (e.g. array(2011, 06, 05, 12, 15, 0))timestamp (e.g. 1307276100)The value that comes back from the form will also be normalized back into this format.
警告
If timestamp is used, DateType is limited to dates between
Fri, 13 Dec 1901 20:45:54 GMT and Tue, 19 Jan 2038 03:14:07 GMT on 32bit
systems. This is due to a limitation in PHP itself.
type: array default: 0 to 59
List of minutes available to the minutes field type. This option is only
relevant when the widget option is set to choice.
type: string default: system default timezone
Timezone that the input data is stored in. This must be one of the PHP supported timezones.
type: array default: 1 to 12
List of months available to the month field type. This option is only relevant
when the widget option is set to choice.
type: array default: 0 to 59
List of seconds available to the seconds field type. This option is only
relevant when the widget option is set to choice.
type: string default: system default timezone
Timezone for how the data should be shown to the user (and therefore also the data that the user submits). This must be one of the PHP supported timezones.
type: string default: null
Defines the widget option for both the date
type and time type. This can be overridden with
the date_widget and time_widget options.
type: Boolean default: true
Whether or not to include minutes in the input. This will result in an additional input to capture minutes.
type: Boolean default: false
Whether or not to include seconds in the input. This will result in an additional input to capture seconds.
type: array default: five years before to five years after the
current year
List of years available to the year field type. This option is only relevant
when the widget option is set to choice.
These options inherit from the form type:
type: mixed default: Defaults to field of the underlying object (if there is one)
When you create a form, each field initially displays the value of the corresponding property of the form’s domain object (if an object is bound to the form). If you want to override the initial value for the form or just an individual field, you can set it in the data option:
$builder->add('token', 'hidden', array(
'data' => 'abcdef',
));
注解
The default values for form fields are taken directly from the
underlying data structure (e.g. an entity or an array).
The data option overrides this default value.
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.
2.3 新版功能: The inherit_data option was introduced in Symfony 2.3. Before, it
was known as virtual.
type: boolean default: false
This option determines if the form will inherit data from its parent form. This can be useful if you have a set of fields that are duplicated across multiple forms. See How to Reduce Code Duplication with “inherit_data”.
警告
When a field has the inherit_data option set, it uses the data of the
parent form as is. This means that Data Transformers
won’t be applied to that field.
type: string default: This value is not valid
This is the validation error message that’s used if the data entered into this field doesn’t make sense (i.e. fails validation).
This might happen, for example, if the user enters a nonsense string into
a time field that cannot be converted
into a real time or if the user enters a string (e.g. apple) into a
number field.
Normal (business logic) validation (such as when setting a minimum length for a field) should be set using validation messages with your validation rules (reference).
type: array default: array()
When setting the invalid_message option, you may need to
include some variables in the string. This can be done by adding placeholders
to that option and including the variables in this option:
$builder->add('some_field', 'some_type', array(
// ...
'invalid_message' => 'You entered an invalid value - it should include %num% letters',
'invalid_message_parameters' => array('%num%' => 6),
));
type: boolean default: true
If you wish the field to be ignored when reading or writing to the object, you
can set the mapped option to false.
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.