File Field

The file field.


Title File
Description Field for uploading files.
Field Type file
Base Field Type text


Property Type Default Description
allowOptionalEmpty Allows this non-required field to validate when the value is empty
autocomplete string Allows you to specify the autocomplete attribute for the underlying input control whether or not field should have autocomplete enabled.
data object Allows you to specify a key/value map of data attributes that will be added as DOM attribuets for the underlying input control. The data attributes will be added as data-{name}='{value}'.
disallowEmptySpaces boolean Whether to disallow the entry of empty spaces in the text
disallowOnlyEmptySpaces boolean Whether to disallow the entry of only empty spaces in the text
enum array List of specific values for this property
inputType string Allows for the override of the underlying HTML5 input type. If not specified, an assumed value is provided based on the kind of input control (i.e. 'text', 'date', 'email' and so forth)
maskString string Expression for the field mask. Field masking will be enabled if not empty.
placeholder string Field placeholder.
size number 40 Field size.
trim boolean Remove whitespace from the beginning and end of string
typeahead Provides configuration for the $.typeahead plugin if it is available. For full configuration options, see:


Property Type Default Description
name string Field Name.
selectionHandler boolean Function that should be called when files are selected. Requires HTML5.
sort function Defines an f(a,b) sort function for the array of enumerated values [{text, value}]. This is used to sort enum and optionLabels as well as results that come back from any data sources (for select and radio controls). By default the items are sorted alphabetically. Don't apply any sorting if false.

Example 1

File field.

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Example 2

File field rendered in display-only mode.

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Example 3

Nested file fields.

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Example 4

Select an image file to see it with instant thumbnail preview

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Example 5

Upload a file and track via a progress bar. A lot of folks ask about how to upload an asset and track it via a progress bar. There are many ways to do this. Here we show one way to do it by using a form and tracking when the submit button is clicked. Select an image file to see it with instant thumbnail preview

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