It seems like I'm facing a simple issue, but I can't quite figure out what mistake I'm making here.
I have a table that displays all the different states:
static get jsonSchema() {
return {
type: 'object',
properties: {
id: { type: 'integer' },
name: { type: 'string', minLength: 1, maxLength: 100 },
},
}
}
static get relationMappings() {
return {
users: {
relation: Model.HasManyRelation,
modelClass: User,
join: {
from: `${tableNames.state}.id`,
to: `${tableNames.user}.state_id`,
},
},
}
Migration script for the state table:
await knex.schema.createTable(tableNames.state, (table) => {
table.increments().primary().notNullable()
table.string('name', 100).notNullable()
User table model definition:
static get jsonSchema() {
return {
type: 'object',
properties: {
id: { type: 'integer' },
first_name: { type: 'string', minLength: 1, maxLength: 100 },
last_name: { type: 'string', minLength: 1, maxLength: 100 },
state_id: { type: 'integer', default: null },
},
}
}
static get relationMappings() {
return {
state: {
relation: Model.BelongsToOneRelation,
modelClass: State,
join: {
from: `${tableNames.user}.state_id`,
to: `${tableNames.state}.id`,
},
}
}
}
User table migration script:
await knex.schema
.createTable(tableNames.user, (table) => {
table.increments().primary().notNullable()
table.string('first_name', 100).notNullable()
table.string('last_name', 100).notNullable()
table.integer('state_id').unsigned()
table
.foreign('state_id')
.references('id')
.inTable(tableNames.state)
.onDelete('SET NULL')
})
The current problem: I am trying to make the state_id column nullable so not every user needs to have a state assigned. However, when I attempt to insert a user without specifying a state_id, I encounter this error:
insert or update on table \"user\" violates foreign key constraint \"user_state_id_foreign\"