File extensions are necessary to open files with the right program. This article explains how to add a new file extension in the data base.
# Open {{UBIK Studio}} and connect to database.<br/>In the {{Class_Browser}} switch to the ''[[Class_Browser#Content|Content view]]''.<br/>[[File:Add_a_file_extension_01UI_HowTo_Add_a_file_extension_01.png|440px|border|alt=Add a file extension|Add a file extension]]<br/># Add a ''[[HowTo:Create_a_new_Selective_List|SelectiveItem]]'' in Admin mode<br/>Now browse to {System.List} in the Class Browser and open the [[MetaClass]] '''SELECTIVEITEM''' in the {{Bulk_Editor}} (via Drag & Drop).<br/>[[File:Add_a_file_extension_02UI_HowTo_Add_a_file_extension_02.png|220 px|border|alt=Add a file extension|Add a file extension]]<br/>[[File:Add_a_file_extension_03UI_HowTo_Add_a_file_extension_03.png|660 px|border|alt=Add a file extension|Add a file extension]]<br/>Every row in the Bulk Editor is shown greyed and can´t be edited, because the MetaClass SELECTIVEITEM is a system MetaClass. So we need to enable the ''[[UBIK_Studio_Basics#Admin_mode|Admin mode]]''.<br/>[[File:Add_a_file_extension_04UI_HowTo_Add_a_file_extension_04.png|660 px|border|alt=Add a file extension|Add a file extension]]<br/>[[File:Add_a_file_extension_05UI_HowTo_Add_a_file_extension_05.png|220 px|border|alt=Add a file extension|Add a file extension]]<br/>After enabling the Admin mode you can add a new row for your file extension.<br/>[[File:Add_a_file_extension_06UI_HowTo_Add_a_file_extension_06.png|880 px|border|alt=Add a file extension|Add a file extension]]# Add your new file extension to the selective list<br/>Open the SELECTIVELIST MetaClass and connect the objects called FILETYPES with the {{Relation_Editor}} to add your new file extension via drag & drop.<br/>[[File:Add_a_file_extension_07UI_HowTo_Add_a_file_extension_07.png|220 px|border|alt=Add a file extension|Add a file extension]]<br/>[[File:Add_a_file_extension_08UI_HowTo_Add_a_file_extension_08.png|220 px|border|alt=Add a file extension|Add a file extension]]<br/>[[File:Add_a_file_extension_09UI_HowTo_Add_a_file_extension_09.png|220 px|border|alt=Add a file extension|Add a file extension]]<br/>{{Attention|Please do not forget the save button.}}
=== Compile and release the ACM ===
[[Category:How-To|Add a new file extension]]
[[Category:Pages with broken file links|Add a new file extension]]