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PSDI Army
yii2
Commits
740ed0a1
Commit
740ed0a1
authored
Nov 28, 2014
by
Alexander Makarov
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Merge pull request #6286 from cdvrooman/patch-28
[skip ci] Update input-validation.md
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docs/guide/input-validation.md
View file @
740ed0a1
...
...
@@ -6,7 +6,7 @@ before putting it to good use.
Given a
[
model
](
structure-models.md
)
populated with user inputs, you can validate the inputs by calling the
[
[yii\base\Model::validate()
]
] method. The method will return a boolean value indicating whether the validation
succeed
s
or not. If not, you may get the error messages from the
[
[yii\base\Model::errors
]
] property. For example,
succeed
ed
or not. If not, you may get the error messages from the
[
[yii\base\Model::errors
]
] property. For example,
```
php
$model
=
new
\app\models\ContactForm
;
...
...
@@ -22,7 +22,7 @@ if ($model->validate()) {
}
```
Behind the scene, the
`validate()`
method does the following steps to perform validation:
Behind the scene
s
, the
`validate()`
method does the following steps to perform validation:
1.
Determine which attributes should be validated by getting the attribute list from
[
[yii\base\Model::scenarios()
]
]
using the current
[
[yii\base\Model::scenario|scenario
]
]. These attributes are called
*active attributes*
.
...
...
@@ -256,7 +256,7 @@ if ($validator->validate($email, $error)) {
}
```
> Note: Not all validators support
such kind
of validation. An example is the [unique](tutorial-core-validators.md#unique)
> Note: Not all validators support
this type
of validation. An example is the [unique](tutorial-core-validators.md#unique)
core validator which is designed to work with a model only.
If you need to perform multiple validations against several values, you can use
[
[yii\base\DynamicModel
]
]
...
...
@@ -300,7 +300,7 @@ public function actionSearch($name, $email)
}
```
After validation, you can check if the validation succeed
s
or not by calling the
After validation, you can check if the validation succeed
ed
or not by calling the
[
[yii\base\DynamicModel::hasErrors()|hasErrors()
]
] method, and then get the validation errors from the
[
[yii\base\DynamicModel::errors|errors
]
] property, like you do with a normal model.
You may also access the dynamic attributes defined through the model instance, e.g.,
...
...
@@ -407,19 +407,19 @@ by calling `validateValue()`.
## Client-Side Validation <a name="client-side-validation"></a>
Client-side validation based on JavaScript is desirable when end users provide inputs via HTML forms, because
it allows users to find out input errors faster and thus provides better user experience. You may use or implement
it allows users to find out input errors faster and thus provides
a
better user experience. You may use or implement
a validator that supports client-side validation
*in addition to*
server-side validation.
> Info: While client-side validation is desirable, it is not a must. Its main purpose is to provide users better
experience.
Like
input data coming from end users, you should never trust client-side validation. For this reason,
you should always perform server-side validation by calling
[
[yii\base\Model::validate()
]
],
like
> Info: While client-side validation is desirable, it is not a must. Its main purpose is to provide users
with a
better
experience.
Similar to
input data coming from end users, you should never trust client-side validation. For this reason,
you should always perform server-side validation by calling
[
[yii\base\Model::validate()
]
],
as
described in the previous subsections.
### Using Client-Side Validation <a name="using-client-side-validation"></a>
Many
[
core validators
](
tutorial-core-validators.md
)
support client-side validation out-of-box. All you need to do
is just
to
use
[
[yii\widgets\ActiveForm
]
] to build your HTML forms. For example,
`LoginForm`
below declares two
Many
[
core validators
](
tutorial-core-validators.md
)
support client-side validation out-of-
the-
box. All you need to do
is just use
[
[yii\widgets\ActiveForm
]
] to build your HTML forms. For example,
`LoginForm`
below declares two
rules: one uses the
[
required
](
tutorial-core-validators.md#required
)
core validator which is supported on both
client and server sides; the other uses the
`validatePassword`
inline validator which is only supported on the server
side.
...
...
@@ -590,7 +590,7 @@ JS;
validation will not complete.
For simplicity, the
`deferred`
array is equipped with a shortcut method
`add()`
which automatically creates a Deferred
object and add it to the
`deferred`
array. Using this method, you can simplify the above example as follows,
object and add
s
it to the
`deferred`
array. Using this method, you can simplify the above example as follows,
```
php
public
function
clientValidateAttribute
(
$model
,
$attribute
,
$view
)
...
...
@@ -623,7 +623,7 @@ You can use AJAX-based validation in this case. It will trigger an AJAX request
input while keeping the same user experience as the regular client-side validation.
To enable AJAX validation for the whole form, you have to set the
[
[yii\widgets\ActiveForm::enableAjaxValidation
]
] property to be
`true`
and specify
`id`
to be unique form identifier:
[
[yii\widgets\ActiveForm::enableAjaxValidation
]
] property to be
`true`
and specify
`id`
to be
a
unique form identifier:
```
php
<?php
$form
=
yii\widgets\ActiveForm
::
begin
([
...
...
@@ -636,7 +636,7 @@ You may also turn AJAX validation on or off for individual input fields by confi
[
[yii\widgets\ActiveField::enableAjaxValidation
]
] property.
You also need to prepare the server so that it can handle the AJAX validation requests.
This can be achieved by a code snippet like the following in controller actions:
This can be achieved by a code snippet like the following in
the
controller actions:
```
php
if
(
Yii
::
$app
->
request
->
isAjax
&&
$model
->
load
(
Yii
::
$app
->
request
->
post
()))
{
...
...
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