MishkaCmsMigration.Resources.Changes.Decided (Mishka CMS Migration v0.0.1)

Keeps an admin's decision on the conflict an item waits on (MishkaCmsMigration.MigrationItem.conflict/1): the choice is put in the item's decisions under that conflict and brings the item back, so every later dry run and import follows it; "leave_out" leaves the item out instead.

The conflict is the one the action's conflict argument names, one of the item's open conflicts (MishkaCmsMigration.MigrationItem.conflicts/1), such as "parent_missing" for Import anyway on an item that waits for its parent, or the item's first (MishkaCmsMigration.MigrationItem.conflict/1) when it names none; one that is not open on the item is as none.

Import anyway and Wait for its parent ("parent_missing") can be changed at any time, also once an import wrote the item without its parent: neither moves the record the import wrote. Taken back, the item waits for its parent again, and its record stays where the import wrote it until the source changes the item; the next import that writes it again places it under its parent, once the parent has a record.

Given as the action's decision argument, the choice of one item's Decide…, a choice the conflict does not offer (MishkaCmsMigration.MigrationItem.choices/1), any choice on an item that waits on none, and any choice on an item whose decision already took effect (MishkaCmsMigration.MigrationItem.settled?/1), is refused on decision, in words an admin reads; no choice changes nothing. A decision that took effect stays: an item an import wrote as new is never moved onto the slug of the site's own record, which the Blog would refuse, and one it connected to the site's record is never written over it.

update :choose do
  argument :decision, :string
  change MishkaCmsMigration.Resources.Changes.Decided
end

Given as :choice, the same answer for the rows an admin picked, it decides the items whose conflict offers it and leaves the others as they are, so a bulk choice over mixed rows never undoes the rows it answers.

update :decide_keep do
  change {MishkaCmsMigration.Resources.Changes.Decided, choice: "keep"}
end

With bulk: true the decision and conflict arguments answer every item of the update at once, atomically: the choice is merged into decisions under the conflict in the database, or "leave_out" leaves them out, in one UPDATE for a group the Decisions panel decides. The action narrows the items to those that wait for that decision, so every one of them is open on the conflict; a choice the conflict does not offer is refused on decision.

update :decide do
  argument :conflict, :string
  argument :decision, :string
  change filter(expr(waits_for_decision and waiting_conflict == ^arg(:conflict)))
  change {MishkaCmsMigration.Resources.Changes.Decided, bulk: true}
end