Meteor Migration Proposal

meteor_migration.js

Post = new SimpleSchema({
  version: 1,
  title: {
    type: String,
    label: "Title",
    max: 200
  }
});

Migrations.add({
  from_version: 1,
  to_version: 2,
  name: 'Adds "(oldpost) to every title',
  up: function() {
    to=from;
    to.title = from.title + "(oldpost)";
  }
  down: function() {
    from=to;
    //asuming the from object is what we want as the result
    from.title = to.title.replace("(oldpost)", "");
  }
});

Post = new SimpleSchema({
  version: 2,
  title: {
    type: String,
    label: "Title",
    max: 200
  }
});

Migrations.add({
  from_version: 2,
  to_version: 3,
  name: 'The boss told me the title of the post should be called "name"...',
  up: function() {
    to=from;
    to.name = from.title;
    delete to.title;
  }
  down: function() {
    from=to;
    //asuming the from object is what we want as the result
    from.title = to.name;
    delete from.name;
  }
});

Post = new SimpleSchema({
  version: 3,
  name: {
    type: String,
    label: "Name",
    max: 200
  }
});