connect rewards to tasks

[CobraOh]

See #1
Each task can be assigned 1 reward.

[eulenfrau]

Here is a link to a website about associations: http://guides.rubyonrails.org/association_basics.html

I'm not sure it's the right one for us. It shows how to establish association between models, like many books (one model) can belong to one author (another model). Does it also work for us, because we need a association between a category of one model (priority of tasks) and another category of another model (priority of rewards). So we need not only to associate models but to specify which parts of the models are associated.
Would the "has_one" "belongs_to" association work for us?
One task is assigned one reward depending on the priorities each has.
There are multiple rewards possible, but only one is chosen.

[eulenfrau]

I think we look at it the wrong way?!
It's not: One task has one reward. A reward can be used for more than one task. This would suggest we "has one" "belongs to many"
Isn't it this way: One priority of a task belongs to exactly one priority of rewards. So there is only one match each way. A task with the highest priority gets a reward with the highest priority and can't get a reward with lowest priority.
So we don't associate rewards and tasks (see Issue Sketches), but priority of tasks and priority of rewards?! That's something totally different, isn't it?