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handle unique constraints in changeColumn() for postgres #46

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merged 1 commit into from Sep 14, 2012
Merged

handle unique constraints in changeColumn() for postgres #46

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21 changes: 20 additions & 1 deletion lib/driver/pg.js
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Expand Up @@ -116,7 +116,26 @@ var PgDriver = Base.extend({
function setNotNull() {
var setOrDrop = columnSpec.notNull === true ? 'SET' : 'DROP';
var sql = util.format("ALTER TABLE %s ALTER COLUMN %s %s NOT NULL", tableName, columnName, setOrDrop);
this.runSql(sql, setDefaultValue.bind(this));
this.runSql(sql, setUnique.bind(this));
}

function setUnique(err) {
if (err) {
callback(err);
}

var sql;
var constraintName = tableName + '_' + columnName + '_unique';

if (columnSpec.unique === true) {
sql = util.format("ALTER TABLE %s ADD CONSTRAINT %s UNIQUE (%s)", tableName, constraintName, columnName);
this.runSql(sql, setDefaultValue.bind(this));
} else if (columnSpec.unique === false) {
sql = util.format("ALTER TABLE %s DROP CONSTRAINT %s", tableName, constraintName);
this.runSql(sql, setDefaultValue.bind(this));
}

setDefaultValue.call(this);
}

function setDefaultValue(err) {
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