Class Helper

Base class for Helpers.

Console Helpers allow you to package up reusable blocks of Console output logic. For example creating tables, progress bars or ascii art.

Cake\Console\Helper uses Cake\Core\InstanceConfigTrait

Direct known subclasses

Cake\Shell\Helper\ProgressHelper, Cake\Shell\Helper\TableHelper
Abstract
Namespace: Cake\Console
Located at Console/Helper.php

Method Detail

__constructsource public

__construct( Cake\Console\ConsoleIo $io , array $config [] )

Constructor.

Parameters

Cake\Console\ConsoleIo $io
The ConsoleIo instance to use.
array $config optional []
The settings for this helper.

outputsource abstract public

output( array $args )

This method should output content using $this->_io.

Parameters

array $args
The arguments for the helper.

Methods used from Cake\Core\InstanceConfigTrait

_configDeletesource protected

_configDelete( string $key )

Delete a single config key

Parameters

string $key
Key to delete.

Throws

Cake\Core\Exception\Exception
if attempting to clobber existing config

_configReadsource protected

_configRead( string|null $key )

Read a config variable

Parameters

string|null $key
Key to read.

Returns

mixed
mixed

_configWritesource protected

_configWrite( string|array $key , mixed $value , boolean|string $merge false )

Write a config variable

Parameters

string|array $key
Key to write to.
mixed $value
Value to write.
boolean|string $merge optional false
True to merge recursively, 'shallow' for simple merge, false to overwrite, defaults to false.

Throws

Cake\Core\Exception\Exception
if attempting to clobber existing config

configsource public

config( string|array|null $key null , mixed|null $value null , boolean $merge true )

Usage

Reading the whole config:

$this->config();

Reading a specific value:

$this->config('key');

Reading a nested value:

$this->config('some.nested.key');

Setting a specific value:

$this->config('key', $value);

Setting a nested value:

$this->config('some.nested.key', $value);

Updating multiple config settings at the same time:

$this->config(['one' => 'value', 'another' => 'value']);

Parameters

string|array|null $key optional null
The key to get/set, or a complete array of configs.
mixed|null $value optional null
The value to set.
boolean $merge optional true
Whether to recursively merge or overwrite existing config, defaults to true.

Returns

mixed
Config value being read, or the object itself on write operations.

Throws

Cake\Core\Exception\Exception
When trying to set a key that is invalid.

configShallowsource public

configShallow( string|array $key , mixed|null $value null )

Merge provided config with existing config. Unlike config() which does a recursive merge for nested keys, this method does a simple merge.

Setting a specific value:

$this->config('key', $value);

Setting a nested value:

$this->config('some.nested.key', $value);

Updating multiple config settings at the same time:

$this->config(['one' => 'value', 'another' => 'value']);

Parameters

string|array $key
The key to set, or a complete array of configs.
mixed|null $value optional null
The value to set.

Returns

mixed
$this The object itself.

Properties summary

$_defaultConfigsource

protected array

Default config for this helper.

[]

$_iosource

protected Cake\Console\ConsoleIo

ConsoleIo instance.

Properties used from Cake\Core\InstanceConfigTrait

$_configsource

protected array

Runtime config

[]

$_configInitializedsource

protected boolean

Whether the config property has already been configured with defaults

false

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Licensed under the MIT License.
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http://api.cakephp.org/3.1/class-Cake.Console.Helper.html