=== Arha Routes ===
Contributors: attlii
Tags: rest, endpoint, multilingual, bilingual, language, multilanguage, international
Tested up to: 5.3
Requires at least: 5.0
Requires PHP: 7.1
Stable tag: master
License: GPLv3 or later
License URI: https://www.gnu.org/licenses/gpl-3.0.html


Wordpress plugin that helps to serve content through REST routes and gives
customizability to developers through filters.

## Available Routes
- `/wp-json/arha/v1/post`
- `/wp-json/arha/v1/page`
- `/wp-json/arha/v1/options`
- `/wp-json/arha/v1/archive`

## Example queries
- `/wp-json/arha/v1/post?post_type=POST_TYPE&slug=SLUG`
- `/wp-json/arha/v1/page?path=PATH`
- `/wp-json/arha/v1/options`
- `/wp-json/arha/v1/archive?post_type=POST_TYPE&posts_per_page=POSTS_PER_PAGE&paged=PAGED&orderby=ORDERBY&order=ORDER`

### tax_query and meta_query in archive-route
- `tax_query` and `meta_query` are supported and they work how the query is built for it in `new WP_Query()`
- both needs their values to bes passed in as stringified json

### Multiple post_types in archive-route
- To pass multiple post_types in archive-route, use syntax that lets PHP read GET-param as an array. https://stackoverflow.com/a/9547490

## Filters

- To exclude querying specific post types from `post`- and `archive`-routes, you
  can use following filters:

```
add_filter('arha_routes/archive_excluded_post_types', 'exclude_post_types');
add_filter('arha_routes/post_excluded_post_types', 'exclude_post_types');

function exclude_post_types($excluded_post_types) {
  $excluded_post_types = ['post'];
  return $excluded_post_types;
}
```

- To format `post`-route's post before it's served to client, use `arha_routes/format_post`-filter
```
add_filter('arha_routes/format_post', 'format_post');

function format_post($post) {
  return $post;
}
```

- To format `page`-route's post before it's served to client, use `arha_routes/format_page`-filter
```
add_filter('arha_routes/format_page', 'format_page');

function format_page($page) {
  return $page;
}
```

- To format `archive`-route's posts before they are served to client, use `arha_routes/format_archive_post`-filter

```
add_filter('arha_routes/format_archive_post', 'format_archive_post');
function format_archive_post($post) {
  return $post;
}
```

- `options`-route returns empty result by default. To add content to it, use `arha_routes/format_options`-filter
```
add_filter('arha_routes/format_options', 'format_options');

function format_options($options) {
  return $options;
}
```

- By default Arha Routes returns only published content with post-, page- and archive-route, this can be modified by adding following filters.
```
// for archive route
add_filter('arha_routes/allowed_post_statuses_archive', 'allowed_post_statuses');
// for post route
add_filter('arha_routes/allowed_post_statuses_post', 'allowed_post_statuses');
// for page route
add_filter('arha_routes/allowed_post_statuses_page', 'allowed_post_statuses');
function allowed_post_statuses($post_statuses) {
  // ... change post_statuses array

  return $post_statuses;
}
```
After adding setting up these filters, request can include "post_status" parameter and it will be compared to $post_statuses array.

## SearchWP

Arha Routes supports SearchWP-plugin, which lets WP users to make keyword search engine for their content.

Activating SearchWP-plugin adds optional keyword-search functionality to `archive`-route. This is done by adding `s=KEYWORD` to the route
- Example: `/wp-json/arha/v1/archive?post_type=products&posts_per_page=10&paged=1&orderby=date&order=ASC&s=monitor`


## Polylang

Arha Routes supports Polylang-plugin, which allows users to create content in multiple languages.

Activating Polylang changes how endpoints work:

- All routes require additional `lang`-param
  - Example: `/wp-json/arha/v1/archive?post_type=products&posts_per_page=10&paged=1&orderby=date&order=ASC&lang=en`
- `page`-route doesn't support language prefix in path
  - Example: Permalink `/zh/info`, use like this `/wp-json/arha/v1/page?path=/info&lang=zh`
  - Example: Permalink `/en/info/test`, use like this `/wp-json/arha/v1/page?path=/info/test&lang=zh`
- `options`-route passes `lang`-param forward to `arha_routes/format_options`-filter
```
add_filter('arha_routes/format_options', 'format_options', 10, 2);
function format_options($options, $lang) {
  return $options;
}
```

## Polylang + SearchWP

In order to make these two plugins work together, you need to add extra plugin to WP installation.

https://searchwp.com/extensions/polylang-integration/