Reply To: Checking current logged in user against acf user multiselect field

• Jonathan

• June 1, 2016 at 10:19 pm

Hey @walkers_inspiration

Just a minor tweak to @imaginedd solution. You need to do a proper wrap of the if statement since you both assign a value and break the foreach loop. Otherwise the foreach will always break on first iteration.

<div class="module_col">

	<h3><?php the_sub_field('module_title'); ?></h3>

	<?php
	// Get List of students to check for eligibility
	$students_list = get_sub_field('student_availability' );

	// Set the default state to false, to be changed later
	$student_authorised = false;

	// Loop through students_list to check if user is allowed access
	foreach( $students_list as $student ) :

		// If user is in the list, set student_authorised to true and break out of loop
		//(no need to loop through everybody if they're the first user)
		if( in_array( $student_username, $student['nickname'] ) ){
			$student_authorised = true;
			break;
		}

	endforeach;

	// If student is in the list, show download link
	if ( $student_authorised ) : ?>
	

		<a href="<?php the_sub_field('module_download'); ?>">
			<button class="download_btn">
				<span><i class="fa fa-cloud-download"></i>Download Module</span>
			</button>
		</a>
	

	<?php 
	// if student not in list, show authentication error
	else : echo 'Not logged in'; endif; ?>

</div>

A different solution would be to fetch the ID of the current user instead and fetch the acf value unformatted. This is a bit more straight forward 🙂

<?php $current_user_id = get_current_user_id(); ?>
<?php if( have_rows('course_modules') ): ?>
	<?php while ( have_rows('course_modules') ) : the_row(); ?>
		<div class="module_container">
			<div class="module_col">
				<h3><?php the_sub_field('module_title'); ?></h3>
				<?php $allowed_user_ids = get_sub_field('student_availability', false ); ?>
				<?php if ( in_array( $current_user_id, $allowed_user_ids ) ): ?>
					<a href="<?php the_sub_field('module_download'); ?>">
						<button class="download_btn"><span><i class="fa fa-cloud-download"></i>Download Module</span></button>
					</a>
				<?php else : ?>
					<p><?php _e('You\'re not allowed to download this module'); ?></p>
				<?php endif; ?>
			</div>
			<div class="module_col">
				<?php the_sub_field('module_details'); ?>
			</div>
		</div>
	<?php endwhile; ?>
<?php endif; ?>