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halkyon/halkyon_learn_server/migrations/20261015220626303-discussions/migration.json

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feat(discussions): questions on published studysets, answered by learners A learner asks about a published studyset, a topic in it, or one card, note or step of a release, and others answer, as on Stack Exchange (ADR 0013): questions and answers in the app's editor without images, sounds or videos, comments of up to 600 characters under the question and each answer. There are no votes: the asker accepts an answer, which comes first, then the oldest; the author's posts are marked. The instance reads from git's file list which topics a question's target sits in, so a topic lists what is asked within it and below it. Posts live in two server-only tables, written through endpoints, so the synced tables stay as they are and v0.17.0 keeps syncing. Everyone signed in reads; writing needs an identity and a public profile; the studyset's author hides posts and blocks people with feedback's blocks; a withdrawn studyset takes no new questions; anyone writes at most 30 posts an hour. A post with others' replies under it is emptied when deleted, else deleted; deletePerson deletes what a person wrote the same way, and a published studyset's deletion takes its discussions with it. The migration adds Serverpod's gen_random_uuid_v7(), discussion_post and discussion_seen with their indexes and cascading foreign keys, and changes nothing else. In the app, discussions open from a copy's studyset or topic menu, a studied card's "Ask about this", Explore's summary and the Publish sheet; the Profile tab's inbox lists those the person follows, and its count includes what is new in them. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Signed-off-by: Tizian 「ティツィアーン」 <raisondetredev@pm.me>
2026-10-15 23:52:40 +02:00
{
"__className__": "serverpod.DatabaseMigration",
"actions": [
{
"__className__": "serverpod.DatabaseMigrationAction",
"type": "createTable",
"createTable": {
"__className__": "serverpod.TableDefinition",
"name": "discussion_post",
"dartName": "DiscussionPost",
"module": "halkyon_learn",
"schema": "public",
"columns": [
{
"__className__": "serverpod.ColumnDefinition",
"name": "id",
"fieldName": "id",
"columnType": 7,
"isNullable": false,
"columnDefault": "random_v7",
"dartType": "UuidValue?"
},
{
"__className__": "serverpod.ColumnDefinition",
"name": "publishedStudysetId",
"fieldName": "publishedStudysetId",
"columnType": 6,
"isNullable": false,
"dartType": "int"
},
{
"__className__": "serverpod.ColumnDefinition",
"name": "kind",
"fieldName": "kind",
"columnType": 0,
"isNullable": false,
"dartType": "String"
},
{
"__className__": "serverpod.ColumnDefinition",
"name": "questionId",
"fieldName": "questionId",
"columnType": 7,
"isNullable": true,
"dartType": "UuidValue?"
},
{
"__className__": "serverpod.ColumnDefinition",
"name": "parentId",
"fieldName": "parentId",
"columnType": 7,
"isNullable": true,
"dartType": "UuidValue?"
},
{
"__className__": "serverpod.ColumnDefinition",
"name": "authUserId",
"fieldName": "authUserId",
"columnType": 7,
"isNullable": true,
"dartType": "UuidValue?"
},
{
"__className__": "serverpod.ColumnDefinition",
"name": "targetKind",
"fieldName": "targetKind",
"columnType": 0,
"isNullable": true,
"dartType": "String?"
},
{
"__className__": "serverpod.ColumnDefinition",
"name": "targetItem",
"fieldName": "targetItem",
"columnType": 0,
"isNullable": true,
"dartType": "String?"
},
{
"__className__": "serverpod.ColumnDefinition",
"name": "targetVersion",
"fieldName": "targetVersion",
"columnType": 6,
"isNullable": true,
"dartType": "int?"
},
{
"__className__": "serverpod.ColumnDefinition",
"name": "topics",
"fieldName": "topics",
"columnType": 0,
"isNullable": true,
"dartType": "String?"
},
{
"__className__": "serverpod.ColumnDefinition",
"name": "title",
"fieldName": "title",
"columnType": 0,
"isNullable": true,
"dartType": "String?"
},
{
"__className__": "serverpod.ColumnDefinition",
"name": "body",
"fieldName": "body",
"columnType": 0,
"isNullable": false,
"dartType": "String"
},
{
"__className__": "serverpod.ColumnDefinition",
"name": "createdAt",
"fieldName": "createdAt",
"columnType": 4,
"isNullable": false,
"dartType": "DateTime"
},
{
"__className__": "serverpod.ColumnDefinition",
"name": "editedAt",
"fieldName": "editedAt",
"columnType": 4,
"isNullable": true,
"dartType": "DateTime?"
},
{
"__className__": "serverpod.ColumnDefinition",
"name": "activeAt",
"fieldName": "activeAt",
"columnType": 4,
"isNullable": false,
"dartType": "DateTime"
},
{
"__className__": "serverpod.ColumnDefinition",
"name": "deletedAt",
"fieldName": "deletedAt",
"columnType": 4,
"isNullable": true,
"dartType": "DateTime?"
},
{
"__className__": "serverpod.ColumnDefinition",
"name": "hiddenAt",
"fieldName": "hiddenAt",
"columnType": 4,
"isNullable": true,
"dartType": "DateTime?"
},
{
"__className__": "serverpod.ColumnDefinition",
"name": "acceptedAnswerId",
"fieldName": "acceptedAnswerId",
"columnType": 7,
"isNullable": true,
"dartType": "UuidValue?"
},
{
"__className__": "serverpod.ColumnDefinition",
"name": "acceptedAt",
"fieldName": "acceptedAt",
"columnType": 4,
"isNullable": true,
"dartType": "DateTime?"
}
],
"foreignKeys": [
{
"__className__": "serverpod.ForeignKeyDefinition",
"constraintName": "discussion_post_fk_0",
"columns": [
"publishedStudysetId"
],
"referenceTable": "published_studyset",
"referenceTableSchema": "public",
"referenceColumns": [
"id"
],
"onUpdate": 3,
"onDelete": 4
},
{
"__className__": "serverpod.ForeignKeyDefinition",
"constraintName": "discussion_post_fk_1",
"columns": [
"questionId"
],
"referenceTable": "discussion_post",
"referenceTableSchema": "public",
"referenceColumns": [
"id"
],
"onUpdate": 3,
"onDelete": 4
},
{
"__className__": "serverpod.ForeignKeyDefinition",
"constraintName": "discussion_post_fk_2",
"columns": [
"parentId"
],
"referenceTable": "discussion_post",
"referenceTableSchema": "public",
"referenceColumns": [
"id"
],
"onUpdate": 3,
"onDelete": 4
}
],
"indexes": [
{
"__className__": "serverpod.IndexDefinition",
"indexName": "discussion_post_studyset_idx",
"elements": [
{
"__className__": "serverpod.IndexElementDefinition",
"type": 0,
"definition": "publishedStudysetId"
},
{
"__className__": "serverpod.IndexElementDefinition",
"type": 0,
"definition": "kind"
}
],
"type": "btree",
"isUnique": false,
"isPrimary": false
},
{
"__className__": "serverpod.IndexDefinition",
"indexName": "discussion_post_question_idx",
"elements": [
{
"__className__": "serverpod.IndexElementDefinition",
"type": 0,
"definition": "questionId"
}
],
"type": "btree",
"isUnique": false,
"isPrimary": false
},
{
"__className__": "serverpod.IndexDefinition",
"indexName": "discussion_post_writer_idx",
"elements": [
{
"__className__": "serverpod.IndexElementDefinition",
"type": 0,
"definition": "authUserId"
}
],
"type": "btree",
"isUnique": false,
"isPrimary": false
}
],
"managed": true
}
},
{
"__className__": "serverpod.DatabaseMigrationAction",
"type": "createTable",
"createTable": {
"__className__": "serverpod.TableDefinition",
"name": "discussion_seen",
"dartName": "DiscussionSeen",
"module": "halkyon_learn",
"schema": "public",
"columns": [
{
"__className__": "serverpod.ColumnDefinition",
"name": "id",
"fieldName": "id",
"columnType": 6,
"isNullable": false,
"columnDefault": "serial",
"dartType": "int?"
},
{
"__className__": "serverpod.ColumnDefinition",
"name": "authUserId",
"fieldName": "authUserId",
"columnType": 7,
"isNullable": false,
"dartType": "UuidValue"
},
{
"__className__": "serverpod.ColumnDefinition",
"name": "questionId",
"fieldName": "questionId",
"columnType": 7,
"isNullable": false,
"dartType": "UuidValue"
},
{
"__className__": "serverpod.ColumnDefinition",
"name": "seenAt",
"fieldName": "seenAt",
"columnType": 4,
"isNullable": false,
"dartType": "DateTime"
}
],
"foreignKeys": [
{
"__className__": "serverpod.ForeignKeyDefinition",
"constraintName": "discussion_seen_fk_0",
"columns": [
"questionId"
],
"referenceTable": "discussion_post",
"referenceTableSchema": "public",
"referenceColumns": [
"id"
],
"onUpdate": 3,
"onDelete": 4
}
],
"indexes": [
{
"__className__": "serverpod.IndexDefinition",
"indexName": "discussion_seen_pair_idx",
"elements": [
{
"__className__": "serverpod.IndexElementDefinition",
"type": 0,
"definition": "authUserId"
},
{
"__className__": "serverpod.IndexElementDefinition",
"type": 0,
"definition": "questionId"
}
],
"type": "btree",
"isUnique": true,
"isPrimary": false
}
],
"managed": true
}
}
],
"warnings": [],
"migrationApiVersion": 1
}
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