J3.x:Adding custom fields/Gallery Field
From Joomla! Documentation
Gallery
Provides a drop down list of directories. All images in the selected directory will be shown in in the frontend as gallery.
Options
Special options within this field are:
- Thumbnailwidth
- Maxwidth
- Maxheight
- Recursive
- Multiple
- Directory
Related Information
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Screenshots
Creating the field
Let's say you create a field with the options shown in the next figure.
Using the field in the backend
In the backend while creating an article or a contact you see the field like in the following imageː
Using the field in the frontend
In the frontend, you can see the field as you see in the following image. The option Automatic display is responsible for the position of the field and your template is responsible for the design of the field.
Is not that great?