I know this must be easy but I can not see it. I have a table with
types of material and a second table of the materials. So;
MaterialType
has_many :materials
and
Material
belongs_to :material_type
I want to display the list of materials as types and include the types
that have no materials, to show;
Type 1
2 materials defined
Material 1
Material 2
<link to add new Type 1 material>
Type 2
0 materials defined
<link to add new Type 2 material>
Type 3
4 materials defined
Material 3
Material 4
Material 5
Material 6
<link to add new Type 3 material>
Etc
The problem is I can show the materials types that have materials
defined but I can not work out how to show all the types especially
the ones without materials, so I can include the link to add one!
Thanks in advance
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