Norwegian Postal Codes support for the Craft CMS

This is a plugin for Craft CMS which provides lookup of Norwegian postal place (poststed) given a postal code (postnummer).

Entry types with one field for postal code and one for postal place can be configured so that (upon saving) the latter is auto-filled based on the former.

Lookup is also available to use in plugins and templates.

Installation

1. Copy or move the norwegianpostalcodes directory into craft/plugins
2. Find the plugin in Craft settings (/admin/settings/plugins) and click Install

Usage

Auto-filled entry fields in the control panel

To enable postal place lookup for an entry type, make sure its fields include two Plain Text fields (must be fields added directly to the entry type; e.g. fields inside matrix blocks are not supported), one with handle postalCode and one with handle postalPlace. Then create a file named norwegianpostalcodes.php in craft/config and add to this file a definition of the config setting postalPlaceLookupEntryTypes with the handle of the entry type. Example (for an entry type with handle 'company'):

<?php

return array(
    'postalPlaceLookupEntryTypes' => 'company',
);

It is possible to add multiple entry types to this setting by separating the handles with commas.

When an entry of specified type is saved, if its postalPlace field is empty, the plugin will attempt to fill it out based on the value of postalCode. (E.g. if postalCode is set to 0159 and postalPlace is empty, and Ctrl+S is pressed, postalPlace will be changed to OSLO before the entry is saved.) However, if the postalPlace field has already been filled out, no lookup is performed and the fields remain at their specified values.

Postal place lookup in a plugin

Example:

$postalPlace = craft()->norwegianPostalCodes_lookup->getPostalPlace('0159');

Exceptions may be thrown if the lookup fails. See code documentation for details.

Postal place lookup in templates

Example:

{% set place = craft.norwegianPostalCodes.getPostalPlace('0159') %}

Note that this may return null if the lookup fails for some reason, even though there are several possible explanations for such a failure:

• inability to connect to the external API that provides the postal code information
• the input not being a valid format, i.e. not being a string of exactly four decimal digits (0-9)
• the input not being a valid postal code despite being the correct format (not all 10000 possible four-digit codes correspond to actual postal codes in use)