Image Metadata

Thanks for the updates on your progress and for this new topic.

You wrote “I can’t figure out how to get the parentheses to print.” Because of the way WordPress processes shortcode parameters you must use two backslash characters to escape parentheses. For example:

[mla_gallery mla_caption="{+template:{+exif:ALL_EXIF+}<br /><br />{+title+}<br /><br />{+description+} (Tags: {+exif:Keywords+}) \\({+file_size,kbmb(m)+}\\)+}"]

You wrote “I’m getting the expected “404” error when trying to use the tags as links.” I am not sure what this means and whether there is a question/problem I can help you with.

You wrote “the tags are separated with semicolons (;).” You can process tag values delimited by semicolons by filling in the “Delimiters” entry for your IPTC/EXIF mapping rule. For example, try entering both a comma and a semicolon in this field, i.e. “,;”. I tried this on a few of your images and it is working for me.

You wrote “Since I didn’t have enough fields in the standard PDF metadata …” I am not sure what PDF authoring tool you are using. The Adobe Acrobat program allows you to enter many fields, including Subject and Keywords. I’m not sure what you mean by a “custom field” in the PDF, but if you post a link to one or more of your PDF documents I can see what metadata they contain.

Thanks for your update with all the good news. I enjoyed the “John Page Marriages” document and the example of a custom PDF property – I’d never tried that before! It looks like your “Category” field ended up in the XMP metadata where is it easy to access in MLA. Thanks for educating me. By the way, don’t put spaces in your Property Name – they are encoded in a strange way and not properly decoded by MLA.

Regarding your 404 errors, I now understand more of what you meant. The topic you found is a good place to start; here are a few more:

Problem with drop down menu

Is it possible to combine att tags dropdown + checkboxes?

Search shortcode

As you can see, it’s a rich area for application innovation.

I am marking this topic resolved. If you have problems or further questions regarding the 404 errors, open up a new topic and we’ll work on it.

Thanks for your update with all the progress you’ve made and for the link to your site (great site!).

You wrote “the category and tag links result in the “not found” error when clicked.“. It looks like the Tags and Category links in your page footer are generated by PHP code in your theme’s template file for the attachment page. If that’s right the material in the topics I referenced will be only indirectly helpful.

Each link on your page goes to the “Blog” section of the site and is looking for posts assigned to the WordPress Tag or Category term you clicked on in the attachment page. That is a somewhat different problem than the “category archive” pages discussed in the other topics.

In general terms the solution will be to create a standard WordPress page with an [mla_gellery] in the page content (you can add pagination controls if you need them, using additional [mla_gallery] shortcodes). On the attachment page each link should go to this new page and should pass the selected tag or category as one of the link arguments. Here are a couple of topics that outline PHP template modifications:

MLA attachment page memory leak?

Need help creating pagination for attachment page!

The above topics are about navigation links, not tag/category links, but the overall logic is similar. If you’d like more specific assistance it would be best to open a new topic since this issue has nothing to do with image metadata.

I am marking this topic resolved since the remaining question deserves its own topic.