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Tie default DB name to database user name #1660

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Tie default DB name to database user name #1660

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Tie default DB name to database user name
solidsnack May 26, 2018
8a70eb6
Major version increment
solidsnack May 30, 2018
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13 changes: 10 additions & 3 deletions lib/connection-parameters.js
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Original file line number Diff line number Diff line change
Expand Up @@ -13,7 +13,7 @@ var defaults = require('./defaults')

var parse = require('pg-connection-string').parse // parses a connection string

var val = function (key, config, envVar) {
var val = function (key, config, envVar, computed) {
if (envVar === undefined) {
envVar = process.env[ 'PG' + key.toUpperCase() ]
} else if (envVar === false) {
Expand All @@ -22,9 +22,13 @@ var val = function (key, config, envVar) {
envVar = process.env[ envVar ]
}

if (computed === undefined) {
computed = function (key) { return defaults[key] }
}

return config[key] ||
envVar ||
defaults[key]
computed(key)
}

var useSsl = function () {
Expand All @@ -50,8 +54,11 @@ var ConnectionParameters = function (config) {
config = Object.assign({}, config, parse(config.connectionString))
}

var dbDefaulting = function () { return this.user || defaults['database'] }
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Is it possible for this.user to be falsy?

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@solidsnack solidsnack May 29, 2018 •
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Looking at the implementation, it's set with val('user', config) which can be false when (a) there is no default set and (b) the corresponding environment variable is not set.

From the outside, URLs like postgres:/// don't have a user, so it stands to reason the implementation has to allow it to be falsey.

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@charmander charmander May 30, 2018 •
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The default has to be set to something; if it’s undefined, the connection is going to fail anyway. I think this can just be const getDefaultDatabase = () => this.user. (At that point, it doesn’t even need to be a function – this.user can be passed in directly.)

dbDefaulting = dbDefaulting.bind(this)

this.user = val('user', config)
this.database = val('database', config)
this.database = val('database', config, undefined, dbDefaulting)
this.port = parseInt(val('port', config), 10)
this.host = val('host', config)
this.password = val('password', config)
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4 changes: 2 additions & 2 deletions test/integration/client/configuration-tests.js
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Expand Up @@ -40,15 +40,15 @@ suite.test('default values are used in new clients', function () {
suite.test('modified values are passed to created clients', function () {
pg.defaults.user = 'boom'
pg.defaults.password = 'zap'
pg.defaults.database = 'pow'
pg.defaults.port = 1234
pg.defaults.host = 'blam'

var client = new Client()
assert.same(client, {
user: 'boom',
password: 'zap',
database: 'pow',
// default database name is user name
database: 'boom',
port: 1234,
host: 'blam'
})
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