_.each(modelDef.definition, function(wlsAttrDef, attributeName) {
// If the attribute has `unique` set on it, or it's the primary key, add a unique index.
if ((wlsAttrDef.autoMigrations && wlsAttrDef.autoMigrations.unique) || (attributeName === modelDef.primaryKey)) {
if (wlsAttrDef.autoMigrations && wlsAttrDef.autoMigrations.unique && (!wlsAttrDef.required && !wlsAttrDef.foreignKey && (attributeName !== modelDef.primaryKey))) {
throw new Error('\nIn attribute `' + attributeName + '` of model `' + modelIdentity + '`:\n' +
'When using sails-disk, any attribute with `unique: true` must also have `required: true`\n');
}
db.ensureIndex({
fieldName: wlsAttrDef.columnName,
unique: true
});
}
// Otherwise, remove any index that may have been added previously.
else {
db.removeIndex(wlsAttrDef.columnName);
}
// If the attribute has `autoIncrement` on it, and it's the primary key,
// initialize a sequence for it.
if (wlsAttrDef.autoMigrations && wlsAttrDef.autoMigrations.autoIncrement && (attributeName === modelDef.primaryKey)) {
sequenceName = modelDef.tableName + '_' + wlsAttrDef.columnName + '_seq';
datastore.sequences[sequenceName] = 0;
}
datastore.refCols[modelDef.tableName] = datastore.refCols[modelDef.tableName] || [];
// If the attribute is a ref, save it to the `refCols` dictionary.
if (wlsAttrDef.type === 'ref') {
datastore.refCols[modelDef.tableName].push(wlsAttrDef.columnName);
}
});//</ _.each() >
return promiseFromCallback(cb => {
this._store.removeIndex(field, cb);
});