This commit allows compute and sort functions to be declared within a
field definition instead of providing a string with the name of the
record method to be used to compute/sort the field value.
Example of code with compute inline:
```javascript
registerModel({
fields: {
thread: one('Thread', {
compute() {
return {
id: this.id,
model: 'mail'.thread',
};
},
}),
},
});
```
Example of code WITHOUT:
```javascript
registerModel({
recordMethods: {
_computeThread() {
return {
id: this.id,
model: 'mail.channel',
};
},
},
fields: {
thread: one('Thread, {
compute: '_computeThread',
}),
},
});
```
The aim of these changes is to empower a better separation of concerns,
by allowing to group together in one place the data related to a field.
Note that for technical reason (`Function.prototype.call` not working as
expected with arrow functions), compute/sort functions should not be
arrow functions.
closesodoo/odoo#99424
Signed-off-by: Sébastien Theys (seb) <seb@odoo.com>