#pattern property causing error in D7
>>> [!note] Migrated issue
<!-- Drupal.org comment -->
<!-- Migrated from issue #2029557. -->
Reported by: [SirReal](https://www.drupal.org/user/2624375)
>>>
<p>After creating an element like this:</p>
<div class="codeblock">
<pre><span style="color: #000000"><span style="color: #0000BB"><?php<br>$form</span><span style="color: #007700">[</span><span style="color: #DD0000">'tel'</span><span style="color: #007700">] = array(<br> </span><span style="color: #DD0000">'#type'</span><span style="color: #007700">=></span><span style="color: #DD0000">'telfield'</span><span style="color: #007700">,<br> </span><span style="color: #DD0000">'#title'</span><span style="color: #007700">=></span><span style="color: #DD0000">'Votre numéro de téléphone'</span><span style="color: #007700">,<br> </span><span style="color: #DD0000">'#title_display'</span><span style="color: #007700">=></span><span style="color: #DD0000">'invisible'</span><span style="color: #007700">,<br> </span><span style="color: #DD0000">'#placeholder' </span><span style="color: #007700">=> </span><span style="color: #DD0000">'Votre numéro de téléphone'</span><span style="color: #007700">,<br> </span><span style="color: #DD0000">'#pattern'</span><span style="color: #007700">=></span><span style="color: #DD0000">'\+?[0-9+*#,;]+'</span><span style="color: #007700">,<br> </span><span style="color: #DD0000">'#attributes' </span><span style="color: #007700">=> array(<br> </span><span style="color: #DD0000">'class'</span><span style="color: #007700">=>array(</span><span style="color: #DD0000">'tooltip-me'</span><span style="color: #007700">),<br> )<br>);<br></span><span style="color: #0000BB">?></span></span></pre></div>
<p>I get the following error:<br>
<code>Fatal error: Call to undefined function form_validate_pattern() in /home/fullwebfactory/svn_trunk/drupal/includes/form.inc on line 1410</code></p>
<p>It appears to me that the following function from elements.module is calling a drupal 8 core function, "<a href="https://api.drupal.org/api/drupal/core!includes!form.inc/function/form_validate_pattern/8">form_validate_pattern</a>", that is not available in D7.</p>
<div class="codeblock">
<pre><span style="color: #000000"><span style="color: #0000BB"><?php<br></span><span style="color: #007700">function </span><span style="color: #0000BB">elements_process_pattern</span><span style="color: #007700">(</span><span style="color: #0000BB">$element</span><span style="color: #007700">) {<br> if (isset(</span><span style="color: #0000BB">$element</span><span style="color: #007700">[</span><span style="color: #DD0000">'#pattern'</span><span style="color: #007700">]) && !isset(</span><span style="color: #0000BB">$element</span><span style="color: #007700">[</span><span style="color: #DD0000">'#attributes'</span><span style="color: #007700">][</span><span style="color: #DD0000">'pattern'</span><span style="color: #007700">])) {<br> </span><span style="color: #0000BB">$element</span><span style="color: #007700">[</span><span style="color: #DD0000">'#attributes'</span><span style="color: #007700">][</span><span style="color: #DD0000">'pattern'</span><span style="color: #007700">] = </span><span style="color: #0000BB">$element</span><span style="color: #007700">[</span><span style="color: #DD0000">'#pattern'</span><span style="color: #007700">];<br> </span><span style="color: #0000BB">$element</span><span style="color: #007700">[</span><span style="color: #DD0000">'#element_validate'</span><span style="color: #007700">][] = </span><span style="color: #DD0000">'form_validate_pattern'</span><span style="color: #007700">;<br> }<br><br> return </span><span style="color: #0000BB">$element</span><span style="color: #007700">;<br>}<br></span><span style="color: #0000BB">?></span></span></pre></div>
issue
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