myerscode / laravel-query-strategies
A package for applying filters, ordering, eager loads, result limiting and pagination to Eloquent queries
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Type:package
Requires
- php: ^8.1
Requires (Dev)
- laravel/framework: ^10.0
- mockery/mockery: ^1.2
- orchestra/testbench: ^8.0
- phpunit/phpunit: ^10.0
This package is auto-updated.
Last update: 2024-10-12 18:04:29 UTC
README
a package to help build queries with Eloquent Builder from URL parameters in a request
Why this package is helpful?
If you want to apply query clauses to Eloquent Models using parameters passed by the user, then this package will allow you to create strategies that will enable them to be applied automatically.
Using query strategies you can define what properties a user can have access to offering a safer way for them interact with your data schemas.
Strategies can obfuscate the real column names, add aliases to them and enable/disable the query clauses that can be applied to the model.
You can work the builder before and after applying a strategy, so it can be easily integrated with existing code and queries.
Installation
You can install the package via composer:
composer require myerscode/laravel-query-strategies
Applying strategies
Getting a filter instance by using one of the following methods:
Using the global helper
filter(Item::class)->with(MyStrategy::class);
Use the facade
Query::filter(Item::class)->with(MyStrategy::class);
Building it yourself
new Filter(Item::query(), new MyStrategy, $request->query->all());
Using the IsFilterable
trait
class Foo extends Model { use IsFilterableTrait; public $strategy = BarStrategy::class; }
You can then use the model itself to apply the filter
$filter = (new Foo)->filter();
You can apply query filters, ordering, limits, includes, pagination.
$filter->apply(); // Applies filter, order, limit, with methods and returns the paginated query $filter->filter(); // Only applies filters and returns the Filter class $filter->order(); // Only applies ordering and returns the Filter class $filter->limit(); // Only applies limiting and returns the Filter class $filter->with(); // Only applies includes and returns the Filter class $filter->paginate(); // Applies pagination and returns a LengthAwarePaginator class $filter->builder(); // Return the builder
Strategies
With strategies you can:
- Have a set disable "default" clauses parameters can use
- Set what query clauses a parameter can do
- You can create custom clauses
- Disable clauses from a parameter
- Set default clauses the parameter uses
- Add aliases to your columns
- Alias clauses to allow better for API experiences
- Automatically apply
with
the builder can eager load - Set query limiting which can be capped to prevent service degradation
- Set columns the query can be ordered by
- Paginate the results
Strategy structure
$config
Fill in the $config
property with the query parameters that you want use on the model.
$config
should contain the allowed queries keys and the values aliases
column
default
disabled
methods
// basic implamentation, that will just enable all default clauses for the strategy and will not mask the column name $config = [ 'foo', 'bar' ];
// advance with custom methods, disabling clauses and changing the default clause $config = [ 'name' => [ 'column' => 'first_name', 'methods' => [ 'hello' => HelloClause::class, 'world' => WorldClause::class, ] ], 'surname' => [ 'column' => 'last_name', 'disabled' => [ 'equals' => EqualsClause::class, ], ], 'dob' => [ 'aliases' => [ 'date_of_birth', 'birthday', ] 'default' => FooBarClause::class, ], 'address' => [ 'methods' => [ 'distance' => DistanceClause::class, ], ], ];
$defaultMethods
The $defaultMethods
property contains all the clauses against an collection of aliases
that properties can use.
Overriding this property will enable you to control what default methods a query can apply to a property of Model
.
protected $defaultMethods = [ ... LessThanClause::class => ['lessThan', '<', 'lt'], GreaterThanOrEqualsClause::class => ['greaterThanOrEquals', '>=', 'gte'], ... ];
$limitTo
The $limitTo
property sets what the default select limit is by default.
// default value protected $limitTo = 50;
$maxLimit
The $maxLimit
property sets what the max limit is, to help prevent people selecting all records form you database and degrading performance.
// default value protected $maxLimit = 150;
$orderBy
The $orderBy
property is an array which sets what columns the Model
can be ordered by.
// default value protected $canOrderBy = [ 'id', ];
Filters
By default parameters will have access to all the query filters in the $defaultMethods
.
You can create custom a Clause
to do more complex or domain specific actions and add them to $defaultMethods
or a single parameter.
Where Clauses
Overriding the clause
You can use a special parameter to set a clause to all properties with that name in a query.
The following example would apply the not
clause to the name
properties.
?name[]=Fred&name[]=Tor&name[]=Chris&name--operator=not
By default the special parameter is $paramName
with a default suffix of --operator
. e.g. name--operator
The parameter can be either fully renamed or the suffix changed in the strategy config.
// a strategy config with operator override properties $config = [ 'name' => [ 'override' => 'name_override', ], 'date' => [ 'overrideSuffix' => '--filter', ], ]; // name=Fred&name_override=like // date=31/12/1987&date--filter=before
Properties with multiple values
If a property passed is found to be an array e.g. name[]=Fred&name[]=Tor&name[]=Chris
then by default the IsInClause
is used.
A property can be set to explode its values on a delimiter, so multiple values can be passed at once to a single parameter e.g. name=Fred,Tor,Chris
.
By default this is disabled and will need to be set on a property-by-property basis and is enabled by setting explode
to true in the property config.
The delimiter can be changed from the default ,
character using the delimiter
config option.
// a strategy config with operator override properties $config = [ 'name' => [ 'explode' => true, ], 'date' => [ 'explode' => true, 'delimiter' => '||', ], ]; // name=Fred,Tor // date=31/12/1987||12/07/1989
Properties with clause in name
A property can be passed with its clause appended in the field name with --
as a separator.
?name--contains=ed
Ordering and Sorting
Sorting is ascending by default. The only available options for sorting is asc
and desc
- if a value other than those is past, it will resort to the default.
?order=name&sort=desc
?order[asc]=name&order[desc]=id
Limiting
?limit=10
?order[asc]=name&order[desc]=id
Using the config
Run the publish command, to create the config file in /config
> php artisan vendor:publish --provider="Myerscode\Laravel\QueryStrategies\ServiceProvider" --tag=config
This will create config/query-strategies.php
which contains the default settings for things such as reserved parameter keys (limit, page, with etc.)
Creating a new strategy
To quickly create a new Strategy
class in Queries/Strategies
run:
> php artisan make:strategy $name
Creating a new query clause
To quickly create a new Clause
class in Queries/Clause
run:
> php artisan make:clause $name
License
The MIT License (MIT). Please see License File for more information.