OSClass a lot of item adding at once

So my task is to create a button in the advertisments part of osclass web page. Were an authenticated user could press a button "add more" and then choice any amount of pictures for example 30. And then those pictures would be counted as a separate advertisement. Then the user could add some detail to each one of the advertisements. As I have never created a plug-in for osclass I would like some guidance/help in doing so. Any links of good tutorials that could help me accomplish this would be great! And thanks for help! :)

Solution

Here's a tutorial to help you develop a plugin for Osclass. :)

About the plugin you want to create, it seems you want to create a custom attributes plugin (extra fields added to items) to extend Osclass item datas.

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