Service Catalog variable attributes

There are a few Service Catalog variables support specific attributes to define the behavior and restrictions for variables.

In the Catalog variable form, under the Type Specifications tab, you can specify the variable attributes in the Variable attributes field.

Note:

• You can enter multiple attributes for a variable type by separating each with a comma.
• You can enter multiple values for an attribute by separating each with a semicolon.
• If you don't see the Variable attributes field, enable the Show attributes when Type is One of Certain Values UI policy.
• Pre-selected values are not cleared automatically when the dependent variable value changes when using an attribute or reference qualifier. Create a client script to clear the values based on your needs and the needs of your customer.

Variable attributes

allowed_extensions

Specifies a list of allowed file types. For example, allowed_extensions=txt;pdf.

Applicable variables: Attachment

barcode

Specifies if the barcode can be scanned using the mobile camera for identifying a variable value of a catalog item. For example, barcode=true.

Applicable variables: Single Line Text

max_file_size

Specifies the maximum file size in MB. For example, max_file_size=2.

Applicable variables: Attachment

glide_list

Changes the list collector interface from slushbucket to glide list.

Applicable variables: List collector

Figure 1. Collapsed glide_list

Figure 2. Expanded glide_list

is_searchable_choice

If set to true, enables you to search for and select the required value for the variable. For example, is_searchable_choice=true.

Note:

• For Lookup select box, a default value is available at the page load itself.
• This attribute is not applicable in Service Portal.

Applicable variables: Lookup select box, Select box

Figure 3. is_searchable_choice

max_length

Sets the maximum number of characters allowed in the field. By default, the field accepts long strings of text, several thousand characters. Set the max_length attribute as appropriate for the information that the variable is collecting. For example, to allow for entry of an address, set max_length=200, or other appropriate length.

Applicable variables: Single-line text, Wide single-line text

max_unit

Sets the maximum unit of time for the duration. Possible values are max_unit=days,max_unit=hours,max_unit=minutes, and max_unit=seconds.

For example, if max_unit=minutes, the duration is displayed in minutes and seconds. In this case, a duration of 2 days 3 hours 5 minutes 15 seconds is displayed as 3065 minutes 15 seconds.

Applicable variables: Duration

no_filter

Hides the filter fields that appear above a list collector.

Applicable variables: List collector

Figure 4. no_filter

ref_ac_columns

Specifies the columns with display values that appear in an auto-completion list in addition to the name. Separate column names with a semicolon. For example, ref_ac_columns=user_name;email;sys_created_on allows auto-complete to match text from the user_name, email, and sys_created_on columns.

Applicable variables: Reference, Requested For.

ref_ac_order_by

Specifies the column that is used to sort the auto-completion list. For example, ref_ac_order_by=name sorts the auto-completion choices alphabetically by name.

Applicable variables: Reference

ref_auto_completer

Specifies the name of a JavaScript class (client-side) that creates the list for auto-completion choices. Valid class values include:

• AJAXReferenceCompleter: Displays matching auto-complete choices as a drop-down list. The list only displays the display value column of the reference table. If there is no other auto-completion class specified, reference fields automatically use this class.
• AJAXTableCompleter: Displays matching auto-complete choices as rows in a table. The table displays the display value column of the reference table and any columns listed in the ref_ac_columns attribute.
• AJAXReferenceChoice: Displays matching auto-complete choices as a drop-down list. The list only displays the display value column of the reference table. The list only displays up to 25 matching choices. If there are more than 25 auto-complete choices, the reference field instead displays the choices with the AJAXTableCompleter class.

Applicable variables: Reference

ref_qual_elements

A list of fields to be sent back to the server to get an updated reference.

Applicable variables: Lookup multiple choice, Lookup select box, List Collector.

Important:

Attribute behavior is specific to the service catalog desktop.

Related tasks

• Define help information for a service catalog variable
• Define a question choice for a variable