Nutrition: add reference from log to meal

[rolandgeider]

Use case

At the moment the different logs only have a foreign key to the plan and it's not possible to know to which meal they belong (other than the time, but that's error prone). This would also allow to show some statistics about the different meals, etc.

Proposal

Add an optional foreign key from Log to Meal. When a meal is "quick logged" the reference can be set automatically, when the user logs an individual ingredient, present an optional dropdown

Needs some backend changes

#29
wger-project/wger#819

[sandimilohanic]

Is this ready for development? Backend changes are done ?

[rolandgeider]

Yes backend is done

[rolandgeider]

Wait, the new field still needs to be exposed over the API, but that's a one liner

[sandimilohanic]

What is the name of the new field ?

[rolandgeider]

It will be simply called "meal". I can try to set the serializers on the backend today or tomorrow