# Content Attributes

An attribute is a well-defined property characterized by an attribute type and a set of applicable parameters. One or more attributes establish the definition of a content type comprise the information provided by content. This section describes the different attribute types supported by Entando.

# Attribute Types

Attribute types can be broken into two categories: simple and composed. A simple attribute type consists of a single piece of information, e.g. an image. A composed attribute type is a collection of simple attribute types, e.g. a set of images.

# Simple Attribute Types

Attach

  • Represents a file attached to the content
  • Consists of the URL of the file in the system’s resources and a text entry containing the file name or description
  • Rendered as a button called Add. Clicking Add prompts the user to select a file from the system's Digital Assets attachment list.

Boolean

  • Represents a boolean value which can be either true or false
  • Rendered as a radio button with options labeled “Yes” and “No”
  • Alternative to the check box attribute

Check box

  • Represents a boolean value which can be either true or false
  • Rendered as a check box labeled “Yes” or “No”
  • Alternative to the boolean attribute

Date

  • Represents a date
  • Provides time tracking capabilities
  • Often used to filter content by publication date, etc.
  • Rendered as a datepicker

Timestamp

  • A specialized instance of the date attribute
  • The hour, minute and second can be specified
  • Rendered as a datepicker for the date and a select for hours, minutes and seconds

Enumerator

  • Represents textual information using a predefined set of options
  • Defined by:
    • Mandatory elements declaring the set of available options
    • An optional separator declaring the character to separate the enumerator arguments. The default separator is a comma.
    • An ExtractorBean parameter naming the Spring bean that processes the enumerator. The value of ExtractorBean must exactly match the bean ID as defined in the Spring configuration file.
  • Rendered as a select list

Enumerator Map

  • Represents textual information using a predefined set of options
  • Defined by:
    • Elements comprising a separated list of key-value pairs
    • An optional separator declaring the character to separate the key-value pairs. The default separator is a comma.
    • Rendered as a select list

Hypertext

  • Holds HTML-tagged text
  • Retains a single value for all languages
  • Rendered as a text area on the page to edit content

Notes: It is best practice to only enter meaningful HTML tags. Avoid those which are decorative or add graphics. If the CKEditor is active, additional functionalities are accessible from a dedicated editor’s toolbar (e.g.table insertion, table manipulation, special character insertion, string formatting, links creation).

Image

  • Binds an image resource to the content
  • The user must specify a description to accompany the image
  • Images are rarely indexed or used to filter content
  • Rendered as a button called Add. Clicking Add prompts the user to select an image from the Digital Assets image list.
  • Selecting an image presents the user with a thumbnail preview and parameters:
    • Text (mandatory) that defaults to the name of the selected image
    • Legend (optional)
    • Alt tag (optional)
    • Description (optional)
    • Title (optional)

Link

  • Represents an hypertext link
  • Normally used to include a link within content
  • It is possible to define up to three different types of links:
    1. External link: Points to a location external to the Entando instance
    2. Page link: Points to a page of the Entando instance
    3. Content link: Points to other content within the Entando instance
  • Rendered as a button called Add. Clicking Add opens a modal window from which the user can select the link type.

Longtext

  • Represents simple unformatted text
  • Supports several languages and the optional parameters of minimum length, maximum length and regular expressions
  • Normally used for a brief description when a short string is insufficient
  • Rendered as a text area

Monotext

  • Represents information in textual form
  • Supports only one language and the optional parameters of minimum length, maximum length and regular expressions
  • Used for fields that do not require localization
  • Rendered as a text field

Number

  • Holds an integer number
  • Retains a single value for all languages
  • Supports the optional parameters "From," "To" and "Equal to"
  • Rendered as a text field

Text

  • Holds a string
  • Retains a single value for all languages
  • Supports minimum length, maximum length and regular expressions as optional parameters
  • Rendered as a text field

ThreeState

  • Conceptually similar to the boolean attribute, with "Both" as a third status option
  • Rendered as a radio button with options labeled “Yes," "No” and "Both"

# Composed Attribute Types

Simple attributes types can only retain a single type of information, whereas composed attribute types aggregate different types of information into one attribute.

It is functionally legal to build a content type where all attributes are specified back-to-back: Although formally complete, this is logically insufficient, as attributes would appear mutually unrelated and their relationships to one another would not be explicitly defined.

Entando offers three types of composed attributes: List, Monolist, and Composite.

List

  • Represents a set of independent and homogeneous elementary attribute types
  • Each attribute type is associated with only one of the languages defined in the system, limiting the list attribute to mono-language attributes
  • Rendered as a button called Add. Clicking Add prompts the user to select or define the single elements which compose the list.

Monolist

  • Represents a list that is common to all of the languages defined in the system, allowing the monolist attribute to handle both mono-language and multi-language attributes
  • Rendered as a button called Add. Clicking Add prompts the user to select or define the single elements which compose the monolist.

Composite

  • Represents an aggregate of different, non-homogeneous, simple attributes types
  • The aggregation of different types is treated as a single unit
  • Rendered as a combination of the elementary attribute types, where each attribute type presents the proper rendering

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