Classes are used to describe the objects. Using the members, they describe which properties should the objects have, how these property values should be stored and edited in the backend. You can manage them (add, edit, and delete) from the backend using the Administration/Classes section:


Data Type Fields


Parent class (abstract only)

If you select a parent class, your class will have all the tabs and members of that abstract class. This feature helps to avoid copying the same members again and again. For example, it is good idea to have the Page class with such members, like URL, Content, Title, and META tags. Also, abstract classes are used to group the objects in the Content/Objects section.


It is the unique text identifier of the class. For example, it is used in the Platformus API to specify, which class of objects you want to manipulate.


Name is used to identify the classes in the backend.

Pluralized name

Pluralized name is used to as the object list titles.

Is abstract

Specifies whether the class is abstract or not (see above).


Tabs are used to group the object property editors on the object page. Click the Tabs link in the class row:


Tab Fields



Name is used to identify the tabs in the backend.


Position is used to sort the tabs in the lists.


Members are used to describe which properties should have the objects of a given class. Click the Members link in the class row:


Member Fields



You can select a tab this member should belong to. All the members without a tab selected go under the General tab.


It is the unique text identifier of the member. This code is used in the different places, like sorting, mapping etc.


Name is used to identify the members in the backend.


Position is used to sort the members in the lists.


Property/Property data type

Member can be a property or a relation. If you specify the property data type, member will be considered as a property. Property data type allows to specify how to store the object property value (and which raw storage data type is used for that), how to display and edit it in the backend.

If a property data type is selected, data type parameters will be also displayed.


Relation/Relation class

If you specify the relation class, member will be considered as a relation. Relation selector will be displayed as the editor. Also, if any relation class is selected, additional fields will be displayed.

Is relation single parent

Specifies whether objects of this class can have the only one relation to the specified class (and this specified class will be considered as the parent one for the current class). For example, if blog post page can have the only one category page, you can use this option. In the object list link to the blog post pages will appear in the category page rows, so all the created blog post pages will be automatically related to the parent category page objects. If the checkbox is not set, there will be two separated lists of the objects: Category pages and Blog post pages, and you will have to select a category page in every blog post page from the relation selector manually.