Conditionals answer “should this part of the page be shown?” You use them so you don’t show empty headings, broken images, or “Tags:” when there are no tags.

Basic shape

• If something is true: {if condition} … show this … {endif}
• If not, show something else: {if condition} … show this … {else} … show that … {endif}

Example 1: Only show the list when there are posts

{if 'blog' has entries}
  <h2>Latest posts</h2>
  {for each entry in 'blog'}
    <article>…</article>
  {endfor}
{else}
  <p>No posts yet.</p>
{endif}

So: if the blog has at least one (published) entry, show the heading and the loop; otherwise show “No posts yet.”

Example 2: Only show a section when the entry has a value

{if entry has excerpt}
  <p class="excerpt">{ excerpt }</p>
{endif}

If the current entry has no excerpt, the whole <p> block is not output. No empty “Excerpt:” line.

Example 3: Fallback when there’s no image

{if entry has featured_image}
  <img src="{ media featured_image }" alt="{ title }">
{else}
  <img src="/images/placeholder.jpg" alt="">
{endif}

So: if the entry has a featured image, use it; otherwise use a placeholder so the layout doesn’t break.

Example 4: “If not” — show only when something is missing

{if not entry has tags}
  <p>No tags for this post.</p>
{endif}

Example 5: Hide “Tags:” when there are no tags

{if entry has tags}
  <p>Tags: {for each tag in tags}<span class="tag">{ tag }</span>{endfor}</p>
{endif}

Combining with loops

You can use conditionals inside a loop (e.g. “if this entry has an excerpt, show it”) or around a loop (“if the collection has entries, show the loop; else show a message”). You can also nest conditionals (one {if} inside another) when you need more complex rules.

Why use them

• Avoid empty or meaningless blocks (e.g. “Related:” with no related items).
• Avoid broken images when a Media field is empty.
• Show different content for “has value” vs “no value” (e.g. placeholder image).
• Show a friendly empty state for lists (“No posts yet”) instead of blank space.