caisse-bliss/v1/.phpdoc/build/classes/Symfony-Component-Form-DataTransformerInterface.html
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<article class="phpdocumentor-element -interface">
<h2 class="phpdocumentor-content__title">
DataTransformerInterface
<div class="phpdocumentor-element__package">
in
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<li><a href="packages/Application.html">Application</a></li>
</ul>
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</h2>
<aside class="phpdocumentor-element-found-in">
<abbr class="phpdocumentor-element-found-in__file" title="vendor/symfony/form/DataTransformerInterface.php"><a href="files/vendor-symfony-form-datatransformerinterface.html"><abbr title="vendor/symfony/form/DataTransformerInterface.php">DataTransformerInterface.php</abbr></a></abbr>
:
<span class="phpdocumentor-element-found-in__line">21</span>
</aside>
<p class="phpdocumentor-summary">Transforms a value between different representations.</p>
<h5 class="phpdocumentor-tag-list__heading" id="tags">
Tags
<a href="classes/Symfony-Component-Form-DataTransformerInterface.html#tags" class="headerlink"><i class="fas fa-link"></i></a>
</h5>
<dl class="phpdocumentor-tag-list">
<dt class="phpdocumentor-tag-list__entry">
<span class="phpdocumentor-tag__name">author</span>
</dt>
<dd class="phpdocumentor-tag-list__definition">
<section class="phpdocumentor-description"><p>Bernhard Schussek <a href="mailto:bschussek@gmail.com">bschussek@gmail.com</a></p>
</section>
</dd>
</dl>
<h3 id="toc">
Table of Contents
<a href="classes/Symfony-Component-Form-DataTransformerInterface.html#toc" class="headerlink"><i class="fas fa-link"></i></a>
</h3>
<h4 id="toc-methods">
Methods
<a href="classes/Symfony-Component-Form-DataTransformerInterface.html#toc-methods" class="headerlink"><i class="fas fa-link"></i></a>
</h4>
<dl class="phpdocumentor-table-of-contents">
<dt class="phpdocumentor-table-of-contents__entry -method -public">
<a href="classes/Symfony-Component-Form-DataTransformerInterface.html#method_reverseTransform">reverseTransform()</a>
<span>
&nbsp;: mixed </span>
</dt>
<dd>Transforms a value from the transformed representation to its original
representation.</dd>
<dt class="phpdocumentor-table-of-contents__entry -method -public">
<a href="classes/Symfony-Component-Form-DataTransformerInterface.html#method_transform">transform()</a>
<span>
&nbsp;: mixed </span>
</dt>
<dd>Transforms a value from the original representation to a transformed representation.</dd>
</dl>
<section class="phpdocumentor-methods">
<h3 class="phpdocumentor-elements__header" id="methods">
Methods
<a href="classes/Symfony-Component-Form-DataTransformerInterface.html#methods" class="headerlink"><i class="fas fa-link"></i></a>
</h3>
<article
class="phpdocumentor-element
-method
-public
"
>
<h4 class="phpdocumentor-element__name" id="method_reverseTransform">
reverseTransform()
<a href="classes/Symfony-Component-Form-DataTransformerInterface.html#method_reverseTransform" class="headerlink"><i class="fas fa-link"></i></a>
</h4>
<aside class="phpdocumentor-element-found-in">
<abbr class="phpdocumentor-element-found-in__file" title="vendor/symfony/form/DataTransformerInterface.php"><a href="files/vendor-symfony-form-datatransformerinterface.html"><abbr title="vendor/symfony/form/DataTransformerInterface.php">DataTransformerInterface.php</abbr></a></abbr>
:
<span class="phpdocumentor-element-found-in__line">91</span>
</aside>
<p class="phpdocumentor-summary">Transforms a value from the transformed representation to its original
representation.</p>
<code class="phpdocumentor-code phpdocumentor-signature ">
<span class="phpdocumentor-signature__visibility">public</span>
<span class="phpdocumentor-signature__name">reverseTransform</span><span>(</span><span class="phpdocumentor-signature__argument"><span class="phpdocumentor-signature__argument__return-type">mixed&nbsp;</span><span class="phpdocumentor-signature__argument__name">$value</span></span><span>)</span><span> : </span><span class="phpdocumentor-signature__response_type">mixed</span></code>
<div class="phpdocumentor-label-line">
</div>
<section class="phpdocumentor-description"><p>This method is called when <a href="Form::submit()"></a> is called to transform the requests tainted data
into an acceptable format.</p>
<p>The same transformers are called in the reverse order so the responsibility is to
return one of the types that would be expected as input of transform().</p>
<p>This method must be able to deal with empty values. Usually this will
be an empty string, but depending on your implementation other empty
values are possible as well (such as NULL). The reasoning behind
this is that value transformers must be chainable. If the
reverseTransform() method of the first value transformer outputs an
empty string, the second value transformer must be able to process that
value.</p>
<p>By convention, reverseTransform() should return NULL if an empty string
is passed.</p>
</section>
<h5 class="phpdocumentor-argument-list__heading">Parameters</h5>
<dl class="phpdocumentor-argument-list">
<dt class="phpdocumentor-argument-list__entry">
<span class="phpdocumentor-signature__argument__name">$value</span>
: <span class="phpdocumentor-signature__argument__return-type">mixed</span>
</dt>
<dd class="phpdocumentor-argument-list__definition">
<section class="phpdocumentor-description"><p>The value in the transformed representation</p>
</section>
</dd>
</dl>
<h5 class="phpdocumentor-tag-list__heading" id="tags">
Tags
<a href="classes/Symfony-Component-Form-DataTransformerInterface.html#method_reverseTransform#tags" class="headerlink"><i class="fas fa-link"></i></a>
</h5>
<dl class="phpdocumentor-tag-list">
<dt class="phpdocumentor-tag-list__entry">
<span class="phpdocumentor-tag__name">throws</span>
</dt>
<dd class="phpdocumentor-tag-list__definition">
<span class="phpdocumentor-tag-link"><a href="classes/Symfony-Component-Form-Exception-TransformationFailedException.html"><abbr title="\Symfony\Component\Form\Exception\TransformationFailedException">TransformationFailedException</abbr></a></span>
<section class="phpdocumentor-description"><p>when the transformation fails</p>
</section>
</dd>
</dl>
</article>
<article
class="phpdocumentor-element
-method
-public
"
>
<h4 class="phpdocumentor-element__name" id="method_transform">
transform()
<a href="classes/Symfony-Component-Form-DataTransformerInterface.html#method_transform" class="headerlink"><i class="fas fa-link"></i></a>
</h4>
<aside class="phpdocumentor-element-found-in">
<abbr class="phpdocumentor-element-found-in__file" title="vendor/symfony/form/DataTransformerInterface.php"><a href="files/vendor-symfony-form-datatransformerinterface.html"><abbr title="vendor/symfony/form/DataTransformerInterface.php">DataTransformerInterface.php</abbr></a></abbr>
:
<span class="phpdocumentor-element-found-in__line">62</span>
</aside>
<p class="phpdocumentor-summary">Transforms a value from the original representation to a transformed representation.</p>
<code class="phpdocumentor-code phpdocumentor-signature ">
<span class="phpdocumentor-signature__visibility">public</span>
<span class="phpdocumentor-signature__name">transform</span><span>(</span><span class="phpdocumentor-signature__argument"><span class="phpdocumentor-signature__argument__return-type">mixed&nbsp;</span><span class="phpdocumentor-signature__argument__name">$value</span></span><span>)</span><span> : </span><span class="phpdocumentor-signature__response_type">mixed</span></code>
<div class="phpdocumentor-label-line">
</div>
<section class="phpdocumentor-description"><p>This method is called when the form field is initialized with its default data, on
two occasions for two types of transformers:</p>
<ol>
<li>
<p>Model transformers which normalize the model data.
This is mainly useful when the same form type (the same configuration)
has to handle different kind of underlying data, e.g The DateType can
deal with strings or \DateTime objects as input.</p>
</li>
<li>
<p>View transformers which adapt the normalized data to the view format.
a/ When the form is simple, the value returned by convention is used
directly in the view and thus can only be a string or an array. In
this case the data class should be null.</p>
<p>b/ When the form is compound the returned value should be an array or
an object to be mapped to the children. Each property of the compound
data will be used as model data by each child and will be transformed
too. In this case data class should be the class of the object, or null
when it is an array.</p>
</li>
</ol>
<p>All transformers are called in a configured order from model data to view value.
At the end of this chain the view data will be validated against the data class
setting.</p>
<p>This method must be able to deal with empty values. Usually this will
be NULL, but depending on your implementation other empty values are
possible as well (such as empty strings). The reasoning behind this is
that data transformers must be chainable. If the transform() method
of the first data transformer outputs NULL, the second must be able to
process that value.</p>
</section>
<h5 class="phpdocumentor-argument-list__heading">Parameters</h5>
<dl class="phpdocumentor-argument-list">
<dt class="phpdocumentor-argument-list__entry">
<span class="phpdocumentor-signature__argument__name">$value</span>
: <span class="phpdocumentor-signature__argument__return-type">mixed</span>
</dt>
<dd class="phpdocumentor-argument-list__definition">
<section class="phpdocumentor-description"><p>The value in the original representation</p>
</section>
</dd>
</dl>
<h5 class="phpdocumentor-tag-list__heading" id="tags">
Tags
<a href="classes/Symfony-Component-Form-DataTransformerInterface.html#method_transform#tags" class="headerlink"><i class="fas fa-link"></i></a>
</h5>
<dl class="phpdocumentor-tag-list">
<dt class="phpdocumentor-tag-list__entry">
<span class="phpdocumentor-tag__name">throws</span>
</dt>
<dd class="phpdocumentor-tag-list__definition">
<span class="phpdocumentor-tag-link"><a href="classes/Symfony-Component-Form-Exception-TransformationFailedException.html"><abbr title="\Symfony\Component\Form\Exception\TransformationFailedException">TransformationFailedException</abbr></a></span>
<section class="phpdocumentor-description"><p>when the transformation fails</p>
</section>
</dd>
</dl>
</article>
</section>
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<strong class="phpdocumentor-on-this-page__title">On this page</strong>
<ul class="phpdocumentor-list -clean">
<li class="phpdocumentor-on-this-page-section__title">Table Of Contents</li>
<li>
<ul class="phpdocumentor-list -clean">
<li><a href="classes/Symfony-Component-Form-DataTransformerInterface.html#toc-constants">Constants</a></li>
<li><a href="classes/Symfony-Component-Form-DataTransformerInterface.html#toc-methods">Methods</a></li>
</ul>
</li>
<li class="phpdocumentor-on-this-page-section__title">Methods</li>
<li>
<ul class="phpdocumentor-list -clean">
<li><a href="classes/Symfony-Component-Form-DataTransformerInterface.html#method_reverseTransform">reverseTransform()</a></li>
<li><a href="classes/Symfony-Component-Form-DataTransformerInterface.html#method_transform">transform()</a></li>
</ul>
</li>
</ul>
</section>
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