Im trying to write a query that will find and display all of my posts that have the same custom field values as my input.
In wordpress I have the following...
My query is...
$pageposts = $wpdb->get_results("SELECT wposts.* FROM $wpdb->posts wposts, $wpdb->postmeta wpostmeta WHERE wposts.ID = wpostmeta.post_id AND wpostmeta.meta_value = 'petrol' OR wpostmeta.meta_value = 'local' ORDER BY wpostmeta.meta_value DESC", OBJECT);
If I remove 'OR wpostmeta.meta_value = 'local' This works correctly and pulls the correct post with the custom field value as 'petrol'
Can anybody give me an idea on where im going wrong? At the moment its display all of my posts even those that are drafts and have been deleted and its also looping and displaying them numerous times...
Try:
SELECT wposts.*
FROM $wpdb->posts wposts, $wpdb->postmeta wpostmeta
WHERE wposts.ID = wpostmeta.post_id
AND (wpostmeta.meta_value = 'petrol' OR wpostmeta.meta_value = 'local')
ORDER BY wpostmeta.meta_value DESC"
Figured it out...
<?php
$customkey = 'Network'; // set to your custom key
$customvalue = 'Local'; // set to custom value
global $wpdb;
$my_posts = $wpdb->get_results("SELECT * FROM $wpdb->posts, $wpdb->postmeta WHERE ID = $wpdb->postmeta.post_id AND meta_key = '$customkey' AND meta_value = '$customvalue' ORDER BY post_date DESC");
foreach ($my_posts as $post) :
setup_postdata($post);
echo '<div><a href="';
the_permalink();
echo '"></div>';
the_title();
endforeach;
?>
Related
I want a select box that allows users to pick the order of posts displayed. (Like youtube order by date / relevance)
I'm displaying a list of custom post types (products). I want users to be able to select the order by price & size. (these are both custom fields).
I've written this code which allows me to change the order by changing the default variables below.
// Default variables
$post_type = 'products';
$custom_field = 'size';
$order = ASC; // ASC or DESC
// Find all matching posts in wordpress database
$querystr = "
SELECT $wpdb->posts.*
FROM $wpdb->posts, $wpdb->postmeta
WHERE $wpdb->posts.ID = $wpdb->postmeta.post_id
AND $wpdb->posts.post_status = 'publish'
AND $wpdb->posts.post_type = '$post_type'
AND $wpdb->postmeta.meta_key = '$custom_field'
ORDER BY $wpdb->postmeta.meta_value $order
";
// Get all the posts
$pageposts = $wpdb->get_results($querystr, OBJECT);
I now need to let public change the default variables with a select box, but I don't know how.
<form method="post">
<select name="custom_field_choice">
<option value="size">Size</option>
<option value="price">Price</option>
</select>
<input type="submit" value="order_select" />
</form>
Is it possible to allow a user to change a php variable with a select box? If not, whats the best way to do this?
Try to change your code to receive variable from http post request like this
// Default variables
$post_type = 'products';
$custom_field = 'size';
$order = ASC; // ASC or DESC
$orderField = $post->custom_field_choice;
// Find all matching posts in wordpress database
$querystr = "
SELECT $wpdb->posts.*
FROM $wpdb->posts, $wpdb->postmeta
WHERE $wpdb->posts.ID = $wpdb->postmeta.post_id
AND $wpdb->posts.post_status = 'publish'
AND $wpdb->posts.post_type = '$post_type'
AND $wpdb->postmeta.meta_key = '$custom_field'
ORDER BY $orderField $order
";
// Get all the posts
$pageposts = $wpdb->get_results($querystr, OBJECT);
Option's values size and price must be column name on your database table.
I have this custom query I need to do that will check against both post_metadata values and taxonomy terms. I'm using code that I modified from Wordpress's codex, but it is returning zero results consistently. Is there a mistake I've made? (UPDATED: shows where it is being loaded into a variable first)
global $wpdb;
$querystr = "
SELECT * FROM $wpdb->posts
LEFT JOIN $wpdb->postmeta ON($wpdb->posts.ID = $wpdb->postmeta.post_id)
LEFT JOIN $wpdb->term_relationships ON($wpdb->posts.ID = $wpdb->term_relationships.object_id)
LEFT JOIN $wpdb->term_taxonomy ON($wpdb->term_relationships.term_taxonomy_id = $wpdb->term_taxonomy.term_taxonomy_id)
LEFT JOIN $wpdb->terms ON($wpdb->term_taxonomy.term_id = $wpdb->terms.term_id)
WHERE $wpdb->terms.name = '" . $service . "'
AND $wpdb->term_taxonomy.taxonomy = 'Services'
AND $wpdb->postmeta.meta_value = '" . $county . "'
AND $wpdb->posts.post_status = 'publish'
AND $wpdb->posts.post_type = 'post'
AND $wpdb->postmeta.meta_key = 'order'
ORDER BY $wpdb->postmeta.meta_value ASC";
$pageposts = $wpdb->get_results($querystr, OBJECT);
I would suggest logging the actual string that is executed (save this select to a variable and log the variable, then pass the variable to the wpdb query). Once you have the sql, you can more easily troubleshoot it (or post it here for further assistance).
I am trying to ORDER BY my results of a custom select query.
But I am trying to order by the value of a meta key.
Please see my query below...
$get_atts = $wpdb->get_results("SELECT ID, post_title FROM $wpdb->posts WHERE $wpdb->posts.post_type IN ('individual') ORDER BY $wpdb->posts.meta_key = 'surname' ASC");
As you can see this ORDER BY is breaking it...
ORDER BY $wpdb->posts.meta_key = 'surname' ASC"
So I am trying to order by the value of surname
But my does not seem to work. Can any explain why or help?
Try to use this query:
$get_atts = $wpdb->get_results("SELECT ID, post_title FROM $wpdb->posts, $wpdb->postmeta
WHERE $wpdb->posts.ID = $wpdb->postmeta.post_id AND $wpdb->postmeta.meta_key = 'surname'
AND $wpdb->posts.post_type IN ('individual') ORDER BY $wpdb->postmeta.meta_value ASC");
I am running a competition which is based on WP Custom Fields. I am trying to count all meta values of a meta_key='odd' for a specific user. I am using the formula below but it's not returning any result.
$meta_key = 'odd';
$post_author = 'Admin';
$odd = $wpdb->get_var( $wpdb->prepare(
"
SELECT Count(meta_value)
FROM $wpdb->postmeta
INNER JOIN $wpdb->posts ON $wpdb->postmeta->post_id = $wpdb->posts->ID
WHERE $wpdb->postmeta->meta_key = 'odd' AND $wpdb->posts->post_author = 'Admin'
",
$meta_key, $post_author
) );
echo "<p>Total odd {$odd}</p>";
Anyone can help me? Thanks in advance.
You are mixing up the $wpdb variables and the $post variables - for your JOIN, for example, you can't use $wpdb->postmeta->post_id, it would be {$wpdb->postmeta}.post_id, and would be even better to just use table aliases. Your prepare() is also not passing in your meta_key or author because you don't have %s placeholders for them
$odd = $wpdb->get_var( $wpdb->prepare(
"
SELECT count(meta_value)
FROM {$wpdb->postmeta} pm
INNER JOIN {$wpdb->posts} p ON pm.post_id = p.ID
WHERE pm.meta_key = %s AND p.post_author = %s
",
$meta_key, $post_author
) );
I have a multiple pages in wordpress all with a single custom field called portfolio-section.
some examples of the data are
page 1 : portfolio-section = red
page 2 : portfolio-section = blue
page 3 : portfolio-section = red
page 4 : portfolio-section = red,blue
now im executing a wp query:
$querystr = "
SELECT wposts.*
FROM $wpdb->posts wposts, $wpdb->postmeta wpostmeta
WHERE wposts.ID = wpostmeta.post_id
AND wpostmeta.meta_key = 'portfolio-section'
AND wposts.post_status = 'publish'
ORDER BY wpostmeta.meta_value DESC
";
$pageposts = $wpdb->get_results($querystr, OBJECT);
foreach ($pageposts as $post) {
echo '<li><a rel="all '.get_post_meta($post->ID, 'portfolio-section', $single = true).'"><span>'.get_post_meta($post->ID, 'portfolio-section', $single = true).'</span></a></li>';
}
which returns the values : "red", "blue", "red,blue"
however what i want to do is explode the "red,blue" and somehow combine it so the final list is
"red", "blue"
I'm not exactly sure what you're attempting to achieve but if you need to use explode to separate the "red,blue" it would be:
$colors = explode(',',$row);