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Informations about the package yii2-cropper
Cropper
Yii-Framework extension for uploading and cropping images
Installation
The preferred way to install this extension is through composer.
Either run
or add
to the require section of your composer.json file.
Differences from the first version
Second version use JavaScript FileAPI for showing image without preloading to the server. Also this version has client validation.
Usage
Once the extension is installed, simply use it in your code by :
Widget has following properties:
| Name | Description | Default | Required |
|---|---|---|---|
| uploadParameter | Upload parameter name | file | No |
| width | The final width of the image after cropping | 200 | No |
| height | The final height of the image after cropping | 200 | No |
| label | Hint in box for preview | It depends on application language. You can translate this message on your language and make pull-request. | No |
| uploadUrl | URL for uploading and cropping image | Yes | |
| noPhotoImage | The picture, which is used when a photo is not loaded. | You can see it on screenshots in this instructions | No |
| maxSize | The maximum file size (kb). | 2097152 | No |
| cropAreaWidth | Width box for preview | 300 | No |
| cropAreaHeight | Height box for preview | 300 | No |
| extensions | Allowed file extensions (string). | jpeg, jpg, png, gif | No |
In UserController:
Action has following parameters:
| Name | Description | Default | Required |
|---|---|---|---|
| path | Path for saving image after cripping | Yes | |
| url | URL to which the downloaded images will be available. | Yes | |
| uploadParameter | Upload parameter name. It must match the value of a similar parameter of the widget. | file | No |
| maxSize | The maximum file size (kb). It must match the value of a similar parameter of the widget. | 2097152 | No |
| extensions | Allowed file extensions (string). It must match the value of a similar parameter of the widget. | jpeg, jpg, png, gif | No |
| width | The final width of the image after cropping. It must match the value of a similar parameter of the widget. | 200 | No |
| height | The final height of the image after cropping. It must match the value of a similar parameter of the widget. | 200 | No |
You can use this widget on frontend and backend. For example: user can change his userpic and administrator can change users userpic.
Operates as follows:
User click on new photo area or drag file
The picture is loaded by JavaScript FileAPI.
This picture is displayed in the widget and users have the ability to crop it or upload another picture
When the user clicks "Crop image", a request with file and coordinates is sent to the server. This picture is displayed in the form, and user can save it, or change crop area, or upload another photo.
