Drupal 7 - How to load a template file from a module?

I am trying to build my own module in Drupal 7.

So I have created a simple module called 'moon'

function moon_menu() {
$items = array();
$items['moon'] = array(
'title' => '',
'description' => t('Detalle de un Programa'),
'page callback' => 'moon_page',
'access arguments' => array('access content'),
'type' => MENU_CALLBACK
);

return $items;
}

function moon_page(){


$id = 3;

$content = 'aa';

}

in moon_page() function, I like to load a custom template 'moon.tpl.php' from my theme file.

is this possible?

For your own stuff (not overriding a template from another module)?

Sure, you only need to:

- Register your template with [hook_theme()][1]

- Call theme('moon', $args)

$args is an array that contains the arguments to the template as specified by your hook_theme() implementation.


[1]:

[To see links please register here]

/*
* Implementation of hook_theme().
*/
function moon_theme($existing, $type, $theme, $path){
return array(
'moon' => array(
'variables' => array('content' => NULL),
'file' => 'moon', // place you file in 'theme' folder of you module folder
'path' => drupal_get_path('module', 'moon') .'/theme'
)
);
}

function moon_page(){

// some code to generate $content variable

return theme('moon', $content); // use $content variable in moon.tpl.php template
}

For Drupal 7, it did not worked for me. I replaced line in hook_theme

'file' => 'moon', by 'template' => 'moon'

and now it is working for me.

In drupal 7 I was getting the following error when using :

`return theme('moon', $content);`

Was resulting in "Fatal error: Unsupported operand types in drupal_install\includes\theme.inc on line 1071"

This was fixed using :

`theme('moon', array('content' => $content));`

You may use moon_menu, with hook_theme

<?php

/**
* Implementation of hook_menu().
*/
function os_menu() {
$items['vars'] = array(
'title' => 'desc information',
'page callback' => '_moon_page',
'access callback' => TRUE,
'type' => MENU_NORMAL_ITEM,
);
return $items;
}

function _moon_page() {
$fields = [];
$fields['vars'] = 'var';

return theme('os', compact('fields'));
}

/**
* Implementation of hook_theme().
*/
function os_theme() {
$module_path = drupal_get_path('module', 'os');

return array(
'os' => array(
'template' => 'os',
'arguments' => 'fields',
'path' => $module_path . '/templates',
),
);
}