Button for file upload

To add a file upload button to the task, use the {{field type= "file" name="output field name> "sources="<sources parameter>" fileType="<fileType parameter>"}} component. Example:

{{field type="file" name="result" sources="GALLERY"  fileType="IMAGE_OR_VIDEO"}}

For a complete list of parameters, see the table.

In the output data description, add one of the fields:

  • Field with the file type — for uploading one file only. Example:
    {
      "result": {
        "type": "file",
        "required": true
      }
    }
  • Field with the array_file type — for uploading several files at once. Example:
    {
      "result": {
        "type": "array_file",
        "required": true
      }
    }
Full list of parameters

Parameter

Description

Required

Default value

type

Field type: file — Button for file upload.

yes

no

name

Attribute for the output data field. Contains the output field name.

yes

no

sources
Note. This parameter applies to the tasks completed in the mobile app.

The file source.

You can set several values in the format sources="<value 1><value 2>" (with a space, without a comma).

Supported values:

  • RECORDER — Built-in voice recorder in the device.
  • CAMERA.
  • GALLERY.
  • FILE_MANAGER.
yes

no

fileType
Note. This parameter applies to the tasks completed in the mobile app.

File type. You can set one of the allowed values:

  • IMAGE_OR_VIDEO — Image or video.
  • VIDEO — Video.
  • AUDIO — Audio recording.
  • ANY — Any file.
Yes (when creating tasks for mobile devices)

no

label

The button label. For example, label="Click me".

no

Depending on the interface language, “Загрузить файл” (Russian), “Upload file” (English), “Dosya yükle” (Turkish), “Faylni yuklash” (Uzbek).

validation-show

The position of popup hints (displayed if the response didn't pass validation). The position is relative to the input field.

Supported values:

  • Above the input field: "top-left", "top-center", "top-right".

  • Below the input field: "bottom-left", "bottom-center", "bottom-right".

  • To the left of the input field: "left-top", "left-center", "left-bottom".

  • To the right of the input field: "right-top", "right-center", "right-bottom".

  • Don't display the message ("false").

no

"top-left"
class

The CSS class for the field. For example, class="annotation".

no

".field" ".field_type_file"
multipleSelect
The number of files to download at the same time.

For the single file upload, set the value to false.

For upload of multiple files:

  1. Set the value to true.
  2. In the output data description, add a field with the array_file type or another type of array.

no

true (if the output data description contains a field with the array_file type or another type of array).