Hi there!
I am quite new to processwire and am just finishing my first PW project. I think the whole framework is awesome and could profit a lot from all the tutorials available. One thing that I somehow can't seem to get my head around is working with images and their resizing. I have following scenario:
A 'gallery-index' page with its 'gallery' children. Those children have an 'images' field where the user uploads his (often too big) images.
I am working with twig. On the gallery page frontend I have a slider, a displayed collection of all the images and a hidden one where I get the source to the original image in a popup. So in total the images will be outputted 3 times in different sizes.
First:
<div id="slick">
{% for img in page.images %}
<img src="{{ img.height(400).url }}" alt="">
{% endfor %}
</div>
Second:
<div class="gallery">
{% for img in page.images %}
<img src="{{ img.width(300).url }}" alt="">
{% endfor %}
</div>
Third:
<div class="hidden">
{% for img in page.images %}
<a href="{{ img.maxWidth(1024).url }}" data-original="{{ img.url }}"></a>
{% endfor %}
</div>
Now, the loops basically work, and some images are displayed the right way. But not all of there are displayed at all, despite them being there in the DOM. The urls all look right but some will be displayed and some url just go to a small black box image. How comes that PW manages to have different results in displaying the images in different formats?
URL of gallery: http://2019.hclaupersdorf.ch/fotos/hc-laupersdorf-vs-ruschlikon-chiefs/ (there are more in the DOM than displayed)
URL of 'not working' image: http://2019.hclaupersdorf.ch/site/assets/files/2361/20180616-rueschlikon-21_42049612175_o.300x0.jpg
Furthermore, whenever this error occurs (which usually is at every page request on the gallery page), the DOM doesn't fully load. My JS for init the slider or the popup won't be loaded and the page is basically displayed half-loaded.
Any ideas or suggestions on how to work around it, best practice when handling images & galleries?
Thanks!