README

This library provides a client side implementation of RESTful services query (similar to graphql) that allows developpers to easily customize data requested from web resources and directly sending complex query parameters to REST service.

Requirements The library only works with compatible web services. Therefore, developpers must provides an implementation that parses, compiles and process query send to the service.

Installation

Using composer PHP package manager:

composer require drewlabs/rest-query

Usage

Query builder

The library comes with a query builder class that provides a fluent interface for building and compiling queries. An example is as follow:

use Drewlabs\RestQuery\QueryBuilder;

// ...


// Building the query and using the query builder fluent API
$builder = QueryBuilder::new()
            ->eq('title', 'Lorem Ipsum')
            ->neq('id', 10)
            ->where(function (QueryBuilder $builder) {
                return $builder->in('tags', ['I', 'L', 'F'])
                    ->gt('likes', 120)
                    ->gte('groups', 10);
            });

// Compiling the query output to JSON string
$result = $builder->json();

As seen above, the API comes with numerous fluent methods for defining query intention:

• eq

The eq method allow developpers to build a COLUMN=VALUE like query:

$result = QueryBuilder::new()->eq('title', 'Lorem Ipsum')->getQuery(); // ['where' => [['title, '=', 'Lorem Ipsum']]]

• neq

The neq is the inverse of the eq query method:

$result = QueryBuilder::new()->neq('title', 'Lorem Ipsum')->getQuery(); // ['where' => [['title, '<>, 'Lorem Ipsum']]]

• lte / lt

The lte and lt respectively allow developper to construct a query that check if a column value is less than (less than or equal to) a given value.

$result = QueryBuilder::new()->lt('title', 'Lorem Ipsum')->getQuery(); // ['where' => [['title, '<', 'Lorem Ipsum']]]
$result = QueryBuilder::new()->lte('title', 'Lorem Ipsum')->getQuery(); // ['where' => [['title, '<=', 'Lorem Ipsum']]]

• gte / gt

The gte and gt respectively allow developper to construct a query that check if a column value is greater than (greater than or equal to) a given value.

$result = QueryBuilder::new()->gt('title', 'Lorem Ipsum')->getQuery(); // ['where' => [['title, '>', 'Lorem Ipsum']]]
$result = QueryBuilder::new()->gte('title', 'Lorem Ipsum')->getQuery(); // ['where' => [['title, '>=', 'Lorem Ipsum']]]

• in

The in clause search for value that exists in a list of provided values:

$result = QueryBuilder::new()->in('rates', [3, 3.5, 9])->getQuery(); // ['in' => [['title, [3, 3.5, 9]]]]

• exists

The exists clause allow to query for relationship existance in the database.

$result = QueryBuilder::new()->exists('comments')->getQuery(); // ['has' => [['comments']]]
$result = QueryBuilder::new()->exists('comments', new SubQuery('where', ['likes', '>', 1000]))->getQuery(); // ['has' => [['column' => 'comments', 'method' => ['params' => ['likes', '>', 1000], 'method' => 'where' ]]]]

• sort

The sort clause allow developpers to apply a sort by column on the result set:

Note The sort order is defined by an integer value. Any value greater than 0 get converted to ASC while any value less than 0 is converted to DESC

$result = QueryBuilder::new()->sort('created_at', -1)->getQuery(); // ['sort' => ['by' => 'created_at', 'order' => 'DESC']]

• select

The select clause allows developpers to specify the list of columns to select from the query server:

$columns = QueryBuilder::new()->eq('title', 'Lorem Ipsum')->select('*', 'comments')->getColumns(); // ['*', 'comments'] 

The REST query client

The REST query client is an implementation similar to the query language from drewlabs/database library that provides 4 overloaded methods select(), update(), delete() and create(), sort sending CRUD action to endpoint servers.

It required drewlabs/curl-rest-client library for actually doing the http request to server. Therefore in order to use the rest query client, developpers are required to execute the following command to install the required dependencies:

composer require drewlabs/curl-rest-client