yii2 小部件未通过 Composer 安装

Question

Can't able to install widget using composer for yii2 framework

My composer look like this:

"require": {
    "php": ">=5.4.0",
    "yiisoft/yii2": "~2.0.6",
    "yiisoft/yii2-bootstrap": "~2.0.0",
    "yiisoft/yii2-swiftmailer": "~2.0.0 || ~2.1.0"

},
"require-dev": {
    "yiisoft/yii2-debug": "~2.0.0",
    "yiisoft/yii2-gii": "~2.0.0",
    "yiisoft/yii2-faker": "~2.0.0",
    "codeception/base": "^2.2.3",
    "codeception/verify": "~0.3.1"
},

Answer 1

You need to change your constraint in the composer.json to the following

"require": {
    "php": ">=5.4.0",
    "yiisoft/yii2": "~2.0.6",
    "yiisoft/yii2-bootstrap": "~2.0.0",
    "yiisoft/yii2-swiftmailer": "~2.0.0"
},
"require-dev": {
    "yiisoft/yii2-debug": "~2.0.0",
    "yiisoft/yii2-gii": "~2.0.0",
    "yiisoft/yii2-faker": "~2.0.0",
    "codeception/base": "^2.2.3",
    "codeception/verify": "~0.3.1"
},

As according to the DOCS

Note: Version 2.1 of this extensions uses Swiftmailer 6 , which requires PHP 7 . If you are using PHP 5 , you have to use version 2.0 of this extension, which uses Swiftmailer 5 , which is compatible with PHP 5.4 and higher.