I created a custom form from a buildForm function. In this form, I would like add an image field.
I can do that via this code :
$form['main']['image'] = array(
'#type' => 'text_format',
'#title' => t('image'),
'#default_value' => array(10),
);
I can upload and remove the image from my form. However, when I upload an image, I haven't this preview.
I mean, when I create a content via the Drupal UI. I can add a preconfigured "image" field. When I upload an image via this "image" field, I have a preview of the image.
And here, when I create the field element programmatically, I haven't a preview of the image when I upload her.
How use api Drupal for have the preview of the image when I upload her via my "image" field ?
So here is how I got my form to display the thumbnail image. What I basically did was take the code in ImageWidget::process, put it in a theme preprocessor and set the #theme property of the element to image_widget.
Your image element in your form class should look like this:
$form['profile_image'] = [
'#type' => 'managed_file',
'#title' => t('Profile Picture'),
'#upload_validators' => array(
'file_validate_extensions' => array('gif png jpg jpeg'),
'file_validate_size' => array(25600000),
),
**'#theme' => 'image_widget',**
**'#preview_image_style' => 'medium',**
'#upload_location' => 'public://profile-pictures',
'#required' => TRUE,
];
In your name_of_default_theme.theme file, you need the following:
function name_of_default_theme_preprocess_image_widget(&$variables) {
$element = $variables['element'];
$variables['attributes'] = array('class' => array('image-widget', 'js-form-managed-file', 'form-managed-file', 'clearfix'));
if (!empty($element['fids']['#value'])) {
$file = reset($element['#files']);
$element['file_' . $file->id()]['filename']['#suffix'] = ' <span class="file-size">(' . format_size($file->getSize()) . ')</span> ';
$file_variables = array(
'style_name' => $element['#preview_image_style'],
'uri' => $file->getFileUri(),
);
// Determine image dimensions.
if (isset($element['#value']['width']) && isset($element['#value']['height'])) {
$file_variables['width'] = $element['#value']['width'];
$file_variables['height'] = $element['#value']['height'];
} else {
$image = \Drupal::service('image.factory')->get($file->getFileUri());
if ($image->isValid()) {
$file_variables['width'] = $image->getWidth();
$file_variables['height'] = $image->getHeight();
}
else {
$file_variables['width'] = $file_variables['height'] = NULL;
}
}
$element['preview'] = array(
'#weight' => -10,
'#theme' => 'image_style',
'#width' => $file_variables['width'],
'#height' => $file_variables['height'],
'#style_name' => $file_variables['style_name'],
'#uri' => $file_variables['uri'],
);
// Store the dimensions in the form so the file doesn't have to be
// accessed again. This is important for remote files.
$element['width'] = array(
'#type' => 'hidden',
'#value' => $file_variables['width'],
);
$element['height'] = array(
'#type' => 'hidden',
'#value' => $file_variables['height'],
);
}
$variables['data'] = array();
foreach (Element::children($element) as $child) {
$variables['data'][$child] = $element[$child];
}
}
The solution works well, but the image module is missing a class with the #FormElement annotation. That is why the element isn't rendered properly.
Can you try with managed_file type?
'#type' => 'managed_file'
First some clarifications, then some observations and then the code that worked for me.
Clarifications:
I am using Drupal 9, but the solution proposed below may work also
for Drupal 8.
By "default temporary directory" I mean the directory defined in the following settings
file
[DrupalrootDirectory]/sites/default/settings.php
using
$settings['file_temp_path'] = '/The/Absolute/Path/To/Your/Temporary/Directory';
or defined by your operating system and that you can check in the Drupal administration
menu:
[YourSiteWebAddress]/admin/config/media/file-system
When something is written inside square brackets [], like this, [DrupalrootDirectory], it means that you should replace it with the actual name in your system, Drupal installation or custom module/file, without the square brackets.
Observations:
No need to create apriory any directories inside the default
temporary directory. They will be created automatically.
When you click the Remove button (which appears automatically as soon you upload a file in your custom form), the image file and the thumbnail files are deleted from the default temporary directory.
It does not matter if you define your default temporary directory inside the default site location,
e.g.,
[DrupalrootDirectory]/sites/default/files
or outside it, for example,
[DrupalrootDirectory]/sites/other/files
In my case, I defined it to:
[DrupalrootDirectory]/sites/default/files/temp
No need to make changes to .htaccess (in Apache server) file inside the default temporary directory or
inside
[DrupalrootDirectory]/sites/default/files
Keep them as Drupal created them.
No need to change file rights to "777" inside the default temporary directory, "775" is enough.
Check that your Drupal installation is actually creating thumbnails for images uploaded using the
administration menu:
[YourSiteWebAddress]/admin/content/media
when using the "Add media" link
[YourSiteWebAddress]/media/add/image
No need to make any other changes inside Drupal settings
file
[DrupalrootDirectory]/sites/default/settings.php
The code that worked for me:
It is based in the code published above by "Je Suis Alrick". But his code was not working for me, neither I could not find in which part of his code the thumbnail image was actually created. In my search for it, this post helped
Generate programmatically image styles with Drupal 8
So, here is the final code:
In your custom module, in the custom form file, most probably located
in:
[DrupalrootDirectory]/modules/custom/[NameOfYourCustomModule]/src/Form/[NameOfYourCustomForm].php
you add the element to be used to upload the image file:
$form['profile_image'] = [
'#type' => 'managed_file',
'#title' => t('Profile Picture'),
'#upload_validators' => array(
'file_validate_extensions' => array('gif png jpg jpeg'),
'file_validate_size' => array(25600000),
),
'#theme' => 'image_widget',
'#preview_image_style' => 'medium',
'#required' => TRUE,
];
So far, the same as in the code of "Je Suis Alrick", except that I deleted the definition for '#upload_location', so the default temporary directory will be used avoiding security complaints.
The important part here is:
the definition of the '#theme', which may be any name, but in this case is 'image_widget';
and the definition of '#preview_image_style', which must be the machine name of one of the image styles defined in your Drupal installation, that you can check in your administration
menu
[YourSiteWebAddress]/admin/config/media/image-styles
For this case the style 'medium' will be used, which is one of the image styles created by default by Drupal.
Then, in the module file of your custom module, named [NameOfYourCustomModule].module and most probably located
in:
[DrupalrootDirectory]/modules/custom/[NameOfYourCustomModule]/
You will need to paste the following code:
<?php
use Drupal\image\Entity\ImageStyle;
function [NameOfYourCustomModule]_preprocess_image_widget(&$variables) {
$element = $variables['element'];
$variables['attributes'] = array('class' => array('image-widget', 'js-form-managed-file', 'form-managed-file', 'clearfix'));
if (!empty($element['fids']['#value'])) {
$file = reset($element['#files']);
$element['file_' . $file->id()]['filename']['#suffix'] = ' <span class="file-size">(' . format_size($file->getSize()) . ')</span> ';
$file_variables = array(
'style_name' => $element['#preview_image_style'],
'uri' => $file->getFileUri(),
);
// Determine image dimensions.
if (isset($element['width']['#value']) && isset($element['height']['#value'])) {
$file_variables['width'] = $element['width']['#value'];
$file_variables['height'] = $element['height']['#value'];
} else {
$image = \Drupal::service('image.factory')->get($file->getFileUri());
if ($image->isValid()) {
$file_variables['width'] = $image->getWidth();
$file_variables['height'] = $image->getHeight();
$style = ImageStyle::load($file_variables['style_name']);
$image_uri = $file->getFileUri();
$destination = $style->buildUri($image_uri);
$style->createDerivative($image_uri, $destination);
}
else {
$file_variables['width'] = $file_variables['height'] = NULL;
}
}
$element['preview'] = array(
'#weight' => -10,
'#theme' => 'image_style',
'#width' => $file_variables['width'],
'#height' => $file_variables['height'],
'#style_name' => $file_variables['style_name'],
'#uri' => $file_variables['uri'],
);
// Store the dimensions in the form so the file doesn't have to be
// accessed again. This is important for remote files.
$element['width'] = array(
'#type' => 'hidden',
'#value' => $file_variables['width'],
);
$element['height'] = array(
'#type' => 'hidden',
'#value' => $file_variables['height'],
);
}
$variables['data'] = array();
foreach (\Drupal\Core\Render\Element::children($element) as $child) {
$variables['data'][$child] = $element[$child];
}
}
You should note that at the end of the name of the function, the name of the theme 'image_widget' is included, which tells Drupal to process your form element using the defined above function: [NameOfYourCustomModule]_preprocess_image_widget
What have I added?
The line at the
top:
use Drupal\image\Entity\ImageStyle;
And the following four lines that actually create the image thumbnail inside the default temporary directory:
$style = ImageStyle::load($file_variables['style_name']);
$image_uri = $file->getFileUri();
$destination = $style->buildUri($image_uri);
$style->createDerivative($image_uri, $destination);
With the addition of these five lines I got it working!
Nice answer thx, only change I'd make is using Token for upload location, and Bytes for file upload size, although I guess it depends on the use case. Something like the below (stripped out most of the code for the sake of simplicity.
namespace Drupal\my_module\Form;
use Drupal\Core\Form\FormBase;
use Drupal\Core\Form\FormStateInterface;
use Symfony\Component\DependencyInjection\ContainerInterface;
use Drupal\Core\Session\AccountProxyInterface;
use Drupal\Component\Utility\Bytes;
use Drupal\Core\Utility\Token;
class SampleForm extends FormBase
{
protected $currentUser;
protected $token;
public function __construct(AccountProxyInterface $current_user, Token $token) {
$this->currentUser = $current_user;
$this->token = $token;
}
public static function create(ContainerInterface $container)
{
return new static(
$container->get('current_user'),
$container->get('token')
);
}
/**
* {#inheritdoc}
*/
public function buildForm(array $form, FormStateInterface $form_state) {
$form['sample_image'] = [
'#type' => 'managed_file',
'#title' => t('Profile Picture'),
'#upload_validators' => array(
'file_validate_extensions' => array('gif png jpg jpeg'),
'file_validate_size' => file_upload_max_size() / pow(Bytes::KILOBYTE, 2) . 'M',
),
'#theme' => 'image_widget',
'#preview_image_style' => 'medium',
'#upload_location' => $this->token->replace('private://[date:custom:Y]-[date:custom:m]'),
'#required' => TRUE,
];
return $form;
}
}
Theme it to work on multiple file upload. From #Je Suis Alrick answer above.
function themename_preprocess_image_widget(&$variables) {
$element = $variables['element'];
$variables['attributes'] = array('class' => array('image-widget', 'js-form-managed-file', 'form-managed-file', 'clearfix'));
if (!empty($element['fids']['#value'])) {
foreach ($element['#files'] as $file) {
$element['file_' . $file->id()]['filename']['#suffix'] = ' <span class="file-size">(' . format_size($file->getSize()) . ')</span> ';
$file_variables = array(
'style_name' => $element['#preview_image_style'],
'uri' => $file->getFileUri(),
);
// Determine image dimensions.
if (isset($element['#value']['width']) && isset($element['#value']['height'])) {
$file_variables['width'] = $element['#value']['width'];
$file_variables['height'] = $element['#value']['height'];
} else {
$image = \Drupal::service('image.factory')->get($file->getFileUri());
if ($image->isValid()) {
$file_variables['width'] = $image->getWidth();
$file_variables['height'] = $image->getHeight();
}
else {
$file_variables['width'] = $file_variables['height'] = NULL;
}
}
$element['preview'][] = array(
'#weight' => -10,
'#theme' => 'image_style',
'#width' => $file_variables['width'],
'#height' => $file_variables['height'],
'#style_name' => $file_variables['style_name'],
'#uri' => $file_variables['uri'],
);
// Store the dimensions in the form so the file doesn't have to be
// accessed again. This is important for remote files.
$element['width'] = array(
'#type' => 'hidden',
'#value' => $file_variables['width'],
);
$element['height'] = array(
'#type' => 'hidden',
'#value' => $file_variables['height'],
);
}
}
$variables['data'] = array();
foreach (\Drupal\Core\Render\Element::children($element) as $child) {
$variables['data'][$child] = $element[$child];
}
}
With this code I can get the value of the current product attribute:
$terms = get_the_terms( $product->id, 'pa_myAttribute');
foreach ( $terms as $term ) {
echo $term->name;
}
I don't know how to get all products with this attribute and store their ids in an array.
Knowing that an attribute is merely a custom taxonomy you can use WP_Query's taxonomy parameters to run a quick get_posts() to return an array of posts that have a particular term in the desired attribute taxonomy. Finally you can use wp_list_pluck() to quickly convert that to an array of only the post IDs.
$args = array( 'post_type' => 'product',
'tax_query' => array(
array(
'taxonomy' => 'pa_color',
'field' => 'slug',
'terms' => 'blue',
)
)
);
$posts = get_posts( $args );
$post_ids = wp_list_pluck( $posts, 'ID' );
In the above example, the get_posts() will return all products that have been assigned the blue term in the color attribute.
Anyone know how to get a campaign to send to a segment? This code isn't working. It will send an email to all people in the campaign. It will not use the segment. (This is some more text so I can get it to pass the validation of SO.)
My code:
//get member list
$memberArray = $api->listMembers($inStockListId);
foreach ($memberArray['data'] as $member) {
$memberInfo = $api->listMemberInfo($inStockListId, $member['email']);
$_productId = $memberInfo['data'][0]['merges']['PRODUCTID'];
$productId='34';
if ($productId == $_productId) {
array_push($emailArray, $member['email']);
}
}
//create new segment for campaign
$listStaticSegmentId = $api->listStaticSegmentAdd($inStockListId, 'inStockStaticSegment');
//add members to segment
$val = $api->listStaticSegmentMembersAdd($inStockListId, $listStaticSegmentId, $emailArray);
$conditions = array();
$conditions[] = array(
'field' => 'email',
'op' => 'like',
'value' => '%'
);
$segment_options = array(
'match' => 'all',
'conditions' => $conditions
);
$type = 'regular';
$options = array(
'template_id' => $campaignTemplateId,
'list_id' => $inStockListId,
'subject' => 'In-Stock Notification',
'from_email' => 'from#email.com',
'from_name' => 'My From Name'
);
$content = array(
'html_main' => 'some pretty html content',
'html_sidecolumn' => 'this goes in a side column',
'html_header' => 'this gets placed in the header',
'html_footer' => 'the footer with an *|UNSUB|* message',
'text' => 'text content text content *|UNSUB|*'
);
$newCampaignId = $api->campaignCreate($type, $options, $content, $segment_options);
I figured it out. Essentially, here is the flow. If you want detailed code, send me a message and I'll be glad to help.
$api = new MCAPI($this->_apiKey);
$api->listMemberInfo($this->_listId, $member['email']);
$api->listUpdateMember($this->_listId, $member['email'], $mergeVars);
$api->listStaticSegmentDel($this->_listId, $segment['id']);
$api->listStaticSegmentAdd($this->_listId, $segmentName);
$api->listStaticSegmentMembersAdd($this->_listId, $segmentId, $emailArray);
$api->campaignCreate($type, $options, $content, $segment_options);
//$api->campaignSendTest($newCampaignId, array($member['email']));
$api->campaignSendNow($newCampaignId);
Note, this is done via the MailChimp PHP API.
Having a little trouble in getting image attachment urls in wordpress. This is my code so far:
<?php // find images attached to this post / page.
global $post;
$thumb_ID = get_post_thumbnail_id( $post->ID );
$args = array(
'post_type' => 'attachment',
'post_mime_type' => 'image',
'numberposts' => -1,
'orderby' => 'menu_order',
'order' => 'ASC',
'exclude' => $thumb_ID,
'post_parent' => $post->ID
);
$images = get_posts($args);
?>
<?php // Loop through the images and show them
if($images)
{
foreach($images as $image)
{
echo wp_get_attachment_image_url($image->ID, $size='attached-image');
}
}
?>
Which returns nothing. If I swap out wp_get_attachment_image_url($image->ID, $size='attached-image'); for wp_get_attachment_image($image->ID, $size='attached-image'); this works fine, but brings in the image rather than just the url.
The following code will loop through all image attachments and output the src url. Note that there are two methods shown, depending on your need.
<?php
global $post;
$args = array( 'post_type' => 'attachment', 'numberposts' => -1, 'post_mime_type' => 'image', 'post_status' => null, 'post_parent' => $post->ID );
$attachments = get_posts($args);
if ($attachments) {
foreach ( $attachments as $attachment ) {
// Method #1: Allows you to define the image size
$src = wp_get_attachment_image_src( $attachment->ID, "attached-image");
if ($src) {echo $src[0];}
// Method #2: Would always return the "attached-image" size
echo $attachment->guid;
}
}
?>
I want to use Featured Images (thumbnails) in my posts.
The thing is, I want to be able to change the following image attributes after the image has been attached to the post, but before the post has been published:
Title
Alternate Text
Caption
Description
How do you do that?
<?php
$size = array(150,150);
$default_attr = array(
'src' => $src,
'class' => "attachment-$size",
'alt' => trim(strip_tags( wp_postmeta->_wp_attachment_image_alt )),
'title' => trim(strip_tags( $attachment->post_title )),
);
the_post_thumbnail( $size, $attr );
?>
I'm still not clear what you're trying to do.
This will display the featured image in your markup using the post title as alt and title attributes.
$image_meta = wp_get_attachment_image_src( get_post_thumbnail_id(), 'medium');
// replace 'medium' with 'thumbnail', 'large', or 'full'.
echo '<img src="'.$image_meta[0].'" alt="'.$post->post_title.'" title="'.$post->post_title.'" width="'.$image_meta[1].'" height="'.$image_meta[2].'"/>';
If you want to actually change the featured image title, alt, caption, description etc in the database, then you could look at the post_publish hook. This should get you started:
function do_stuff($post_ID){
global $post;
$post_thumbnail_id = get_post_thumbnail_id($post_ID);
if ($post_thumbnail_id){
// Do Stuff with your featured image id - $post_thumbnail_id
}
return $post_ID;
}
add_action('publish_post', 'do_stuff');
try this and its work fine.
$title_attribute = the_title_attribute( array( 'echo' => FALSE ) );
the_post_thumbnail(
'full',
array(
'alt' => $title_attribute,
'title' => $title_attribute
)
);