Export to item model

[pastel trout]

I know this is probably a question that's easily answerable but how do I export a model to overwrite an item when it has specific nbt?

[obtuse nymph]

In vanilla the only NBT you can check with models would be Damage and CustomModelData.
If you wanna check other nbt like names, lore, enchantments etc. you'd need Optifine's CIT feature.

For vanilla:

!faq custom_model_data

[royal kestrel]

Disclaimer: This only works for items (not placed blocks!) and only if you are in Java Edition 1.14 or later!

Example to give a stick 4 new models:
You'd place this file in YourResourcePack/assets/minecraft/models/item and call it stick.json.

stick.json

{
    "parent": "item/generated",
    "textures": {
        "layer0": "item/stick"
    },
    "overrides": [
        { "predicate": {"custom_model_data": 1}, "model": "item/custom_stick"},
        { "predicate": {"custom_model_data": 2}, "model": "custom/branch"},
        { "predicate": {"custom_model_data": 3}, "model": "block/stone"},
        { "predicate": {"custom_model_data": 4}, "model": "item/more_sticks"}
    ]
}```
Ingame you can give yourself one of the custom sticks by doing `/give <player> stick{CustomModelData:X}` (X being replaced by the number you want)

*PS: The model path is **always** relative to the models folder of your pack.*
*So `"item/custom_stick"` will load the model in `YourPack/assets/minecraft/models/item` called custom_stick.json.*
*For `"custom/branch"` it would be the model in `YourPack/assets/minecraft/models/custom` called branch.json and so on.*