How can I pull the slug of a custom taxonomy and output it in a class?

You can easily just get the taxonomies you need with wp_get_object_terms, and than do something like

$class="";
foreach ($genres as $genre) {
    $class .= $genre->slug;
}

Do this for each of your taxonomies,than just echo $class.

Related Posts:

  1. get_posts assigned to a specific custom taxonomy term, and not the term’s children
  2. How can I get only parent terms?
  3. Retrieve posts by term id custom query
  4. Change order of Custom Taxonomy List
  5. Get the the top-level parent of a custom taxonomy term
  6. get_the_term_list without links in 3.1
  7. Inserting terms in an Hierarchical Taxonomy
  8. get_terms – only top level
  9. How to only list the child terms of a taxonomy and not their parents?
  10. Hierarchical taxonomy UI
  11. How to prevent new terms being added to a custom taxonomy?
  12. Order get_terms using a Custom Field
  13. get_term_children for immediate children only (not grandchildren)
  14. Query users by custom taxonomy and user role
  15. Determine Term depth
  16. How to get current term in my custom taxonomy in WordPress?
  17. Is there a way to ‘Lock’ a Taxonomy?
  18. Hide the term description on the term edit page, for a given taxonomy
  19. Order terms by term_order
  20. get_term_by not working when in functions.php
  21. Creating a non-removable taxonomy term
  22. Get value in custom field with taxonomy [closed]
  23. Get second level terms of custom taxonomy
  24. Can I lock down custom taxonomies on a parent term level, but not a child term?
  25. Get only the first term by taxonomy
  26. Exclude specific slug in ‘get_terms’
  27. Large taxonomy (2000+ terms), causing WordPress to hang
  28. Custom order of terms for custom taxonomy in admin and website
  29. Is there a way to disable a term rather than deleting it?
  30. Modify Term Update Redirection
  31. Best pratice to make taxonomy terms translatable without changing slugs?
  32. Front End Post Save Child terms
  33. Return only the custom sub-term for custom post type, do not echo term-parent
  34. wp_insert_term is adding a term that has no name
  35. Taxonomy slug by term ID
  36. Check if current term is a child of another term
  37. Is there a way to import terms into WordPress?
  38. get_terms() doesn’t return empty terms even though hide_empty is false
  39. Get terms from multiple taxonomies
  40. Get taxonomy name of current post
  41. Formating the_terms() function output
  42. get_terms() returns an empty array
  43. wp_insert_term auto unique name
  44. get_terms showing link to category even if all posts are drafts
  45. Determine if Term has Grandparent/Great-Grandparent
  46. Custom Taxonomy Only Showing Top Level Terms in Admin?
  47. Dropdown: Display terms from B only if has relationship with a term A selected
  48. Non-hierarchical custom taxonomy using checkboxes on edit-screen -> saving issue
  49. Retrieving custom taxonomy in order, but excluding specific tax IDs
  50. wp_get_object_terms – How can I order the resulting array by hierarchy?
  51. Get main parent categories for a product
  52. Get current term’s ID
  53. Is it possible to get a Previous/Next Taxonomy term archive URL?
  54. Showing posts by collection of specific terms and texonomy
  55. get taxonomy terms for parent and child
  56. Taxonomy query for children of parents
  57. show term description instead of list terms of custom taxonomy
  58. WP_insert_term how to insert multiple values as taxonomny term?
  59. Looping Through Custom Tax Terms and Displaying All Posts For Each
  60. Group posts that matches a term in a loop
  61. term_link() filter or rewrite and howto?
  62. How to get the top most term (top ancestor) of a custom taxonomy child term?
  63. Display Custom Taxonomy Terns ordered by meta_value
  64. Separator for multiple terms
  65. Contact Form 7 – Populating dropdown list with terms relative to the post
  66. Custom Taxonomy terms with latest post ordered by date pagination issue
  67. How to set hierarchical terms to a post using wp_set_object_terms
  68. Echo taxonomy term meta on author.php
  69. get_the_term_list without specific category
  70. Hierarchical display of custom taxonomy
  71. Listing child terms of parent term
  72. Display the taxonomy name of the current term
  73. Custom taxonomy term as class?
  74. How to edit/remove a term that’s in multiple taxonomies?
  75. Ordering Posts with Custom Taxonomy Terms Array
  76. How to create a theme template for the taxonomy “root”
  77. How to display term description in empty terms archive?
  78. Advanced custom fields – taxonomy terms images [closed]
  79. Checking if a Page has an Associated Term?
  80. Custom taxonomy term in WooCommerce product permalink
  81. What are terms and taxonomy, how they related to post and how these three are stored in database?
  82. Get multiple term objects by ids
  83. Automatically assign taxonomy term if custom meta value exists
  84. List only first-level children of specific custom taxonomy term
  85. Echo custom taxonomy term name
  86. get_terms of post->id
  87. How to handle “the_terms” inside loop
  88. get_terms custom order
  89. Display the Terms from a Custom Taxonomy Assigned to a Post(inside the loop) in Hierarchial Order
  90. How to create drop down for child categories of current taxonomy being viewed?
  91. Edit post meta with checkboxes on front end
  92. Limits amount of terms displayed? Is it possible?
  93. Dynamically tax_query terms
  94. get / list categories and counts filtered by custom taxonomy term
  95. How to get a list of taxonomy terms which are being used only within certain post types?
  96. how to create a proper query for getting a list of users with taxonomy related meta key
  97. How to dynamically add custom taxonomy terms as a sub-menu of an existing menu item, using custom walker class
  98. Get terms ordered by post date
  99. WPML Translating a term/taxonomy programmatically
  100. Allow only 1 instance of each term in each custom taxonomy
File not found.