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Yii v2 snippet guide

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Yii v2 snippet guide

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Tutorials

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2.0

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tutorial,beginner,yii2

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[...]
INSERT INTO `user` (`id`, `username`, `password`, `email`, `authKey`) VALUES (NULL, 'user01', '0497fe4d674fe37194a6fcb08913e596ef6a307f', 'user01@gmail.com', NULL);
```

If you must use MyISAM instead of InnoDB, just change the word InnoDB into MYISAM.

Then use GII to generate model. The GII URL will probably be
 
- [http://localhost/basic/web/index.php?r=gii](http://localhost/basic/web/index.php?r=gii).
 
- When creating the model, check this checkbox: **Enable I18N** ... we will need i18n later
 
- Enter table name "user" and model name "User"
 
- Note that there already is a model named User in the demo app. You will not need it if you want to use login-via-DB so feel free to check the overwrite-checkbox in GII. The newly created User model will now be usable only for table operations, not for login. But we will enhance it, see the snippet below.
 
- The new model will onreplace existing model User with following snippet
 
 
- The model was generated by Gii and originally haved 3 methods: tableName(), rules(), attributeLabels() - In order to use the DB for login, we needed to implement IdentityInterface which requires [5 new methods](https://www.yiiframework.com/doc/api/2.0/yii-web-identityinterface). - Plus we add 2 methods because of the default LoginForm otherwise the web will not work. 
 
- Once you use the snippet below, you can create CRUD for model User.
 
 
The final model should look like this:and 1 validator.
 


```php
[...]
```

Now you can also create Validators vs JavaScript:
 
- There are 2 types of validators. All of them are used in method **rules**, but as you can see, the validator **setPasswordWhenChanged** is my custom validator and needs a special method.
 
- If a validator does not need this special method, it is automatically converted into JavaScript and is used on the web page when you are typing.
 
- If a validator needs the method, it cannot be converted into JavaScript so the rule is checked  only in the moment when user sends the form to the server - after successful JavaScript validation.
 
 
Now you can also create **CRUD** using GII:
 
 
- [http://localhost/basic/web/index.php?r=gii](http://localhost/basic/web/index.php?r=gii).
 
 
CRUD = Create Read Update Delete = views and controller. On the GII page enter following values:

- Model Class = app\models\User
- Search Model Class = app\models\UserSearch
- Controller Class = app\controllers\UserController
- View Path can be empty or you can set: views\user
[...]
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Version: 2.0
Category: Tutorials
Tags: beginner, tutorial, yii2
Written by: rackycz
Last updated by: rackycz
Created on: Sep 19, 2019
Last updated: a year ago
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