Custom Field in post editor

[viorelepuran]

Hello!
I want to add a custom field , that will be visible in post editor, just below the field for post`s title.
I know about the Advanced Custom Filed plugin, i have used that with success, but now i want to get that same functionality without using a plugin, i need to do this throw theme`s funtion.php.

So basicly, i need a text box below the box for the post title, and i need to know what will the meta key be named, so i can pull it in side posts.

Thank you for reading and trying to help me!

[Brad Dalton]

You can hand code this and hook it in the exact position you want.

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Tutorials for StudioPress Themes.

[viorelepuran]

Thank you Brad, i googled it, and i added a custom meta box, with a text field. now i can pull the value of that field, and i did it all in my function.php.
This is the code i used:

/ Little function to return a custom field value
function wpshed_get_custom_field( $value ) {
global $post;

$custom_field = get_post_meta( $post->ID, $value, true );
if ( !empty( $custom_field ) )
return is_array( $custom_field ) ? stripslashes_deep( $custom_field ) : stripslashes( wp_kses_decode_entities( $custom_field ) );

return false;
}

// Register the Metabox
function wpshed_add_custom_meta_box() {
add_meta_box( 'wpshed-meta-box', __( 'Ebay listing', 'textdomain' ), 'wpshed_meta_box_output', 'post', 'side', 'high' );
}
add_action( 'add_meta_boxes', 'wpshed_add_custom_meta_box' );

// Output the Metabox
function wpshed_meta_box_output( $post ) {
// create a nonce field
wp_nonce_field( 'my_wpshed_meta_box_nonce', 'wpshed_meta_box_nonce' ); ?>

<p>
<label for="wpshed_textfield"><?php _e( 'Keyword', 'textdomain' ); ?>:</label>
<input type="text" name="wpshed_textfield" id="wpshed_textfield" value="<?php echo wpshed_get_custom_field( 'wpshed_textfield' ); ?>"/>
</p>

<?php
}

// Save the Metabox values
function wpshed_meta_box_save( $post_id ) {
// Stop the script when doing autosave
if( defined( 'DOING_AUTOSAVE' ) && DOING_AUTOSAVE ) return;

// Verify the nonce. If insn't there, stop the script
if( !isset( $_POST['wpshed_meta_box_nonce'] ) || !wp_verify_nonce( $_POST['wpshed_meta_box_nonce'], 'my_wpshed_meta_box_nonce' ) ) return;

// Stop the script if the user does not have edit permissions
if( !current_user_can( 'edit_post' ) ) return;

// Save the textfield
if( isset( $_POST['wpshed_textfield'] ) )
update_post_meta( $post_id, 'wpshed_textfield', esc_attr( $_POST['wpshed_textfield'] ) );

}
add_action( 'save_post', 'wpshed_meta_box_save' );

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