This section will describe how to use Gii to automatically generate code that implements some common Web site features. Using Gii to auto-generate code is simply a matter of entering the right information per the instructions shown on the Gii Web pages.
Through this tutorial, you will learn how to:
Gii is provided in Yii as a module. You can enable Gii
by configuring it in the modules property of the application. Depending upon how you created your application, you may find the following code is already provided in the config/web.php
configuration file:
$config = [ ... ];
if (YII_ENV_DEV) {
$config['bootstrap'][] = 'gii';
$config['modules']['gii'] = [
'class' => 'yii\gii\Module',
];
}
The above configuration states that when in development environment,
the application should include a module named gii
, which is of class yii\gii\Module.
If you check the entry script web/index.php
of your application, you will
find the following line, which essentially makes YII_ENV_DEV
to be true
.
defined('YII_ENV') or define('YII_ENV', 'dev');
Thanks to that line, your application is in development mode, and will have already enabled Gii, per the above configuration. You can now access Gii via the following URL:
http://hostname/index.php?r=gii
Note: If you are accessing Gii from a machine other than localhost, the access will be denied by default for security purpose. You can configure Gii to add the allowed IP addresses as follows,
'gii' => [ 'class' => 'yii\gii\Module', 'allowedIPs' => ['127.0.0.1', '::1', '192.168.0.*', '192.168.178.20'] // adjust this to your needs ],
To use Gii to generate an Active Record class, select the "Model Generator" (by clicking the link on the Gii index page). Then fill out the form as follows:
country
Country
Next, click on the "Preview" button. You will see models/Country.php
is listed in the resulting class file to be created. You may click on the name of the class file to preview its content.
When using Gii, if you have already created the same file and would be overwriting it, click
the diff
button next to the file name to see the differences between the code to be generated
and the existing version.
When overwriting an existing file, check the box next to "overwrite" and then click the "Generate" button. If creating a new file, you can just click "Generate".
Next, you will see a confirmation page indicating the code has been successfully generated. If you had an existing file, you'll also see a message indicating that it was overwritten with the newly generated code.
CRUD stands for Create, Read, Update, and Delete, representing the four common tasks taken with data on most Web sites. To create CRUD functionality using Gii, select the "CRUD Generator" (by clicking the link on the Gii index page). For the "country" example, fill out the resulting form as follows:
app\models\Country
app\models\CountrySearch
app\controllers\CountryController
Next, click on the "Preview" button. You will see a list of files to be generated, as shown below.
If you previously created the controllers/CountryController.php
and
views/country/index.php
files (in the databases section of the guide), check the "overwrite" box to replace them. (The previous versions did not have full CRUD support.)
To see how it works, use your browser to access the following URL:
http://hostname/index.php?r=country%2Findex
You will see a data grid showing the countries from the database table. You may sort the grid, or filter it by entering filter conditions in the column headers.
For each country displayed in the grid, you may choose to view its details, update it, or delete it. You may also click on the "Create Country" button on top of the grid to be provided with a form for creating a new country.
The following is the list of the files generated by Gii, in case you want to investigate how these features are implemented, or to customize them:
controllers/CountryController.php
models/Country.php
and models/CountrySearch.php
views/country/*.php
Info: Gii is designed to be a highly customizable and extensible code generation tool. Using it wisely can greatly accelerate your application development speed. For more details, please refer to the Gii section.
In this section, you have learned how to use Gii to generate the code that implements complete CRUD functionality for content stored in a database table.
Found a typo or you think this page needs improvement?
Edit it on github !
These instructions don't tell you that you need to edit models\Country.php to add:
for it to work if you've done the previous Gii example.
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