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I am creating a new module in drupal 7 called coolmodule and I'm trying to figure out how to bind content to the file sites/all/modules/coolmodule/coolmodule.tpl.php file. Here's the block view code in my coolmodule.module;

function coolmodule_block_view($delta = '') {

    $block['subject'] = t('My Special Module');


    $block['content'] = theme('coolmodule', array('myvar' => 'helloworld'));

    return $block;
}

But for some reason, pages with this block does not render sites/all/modules/coolmodule/coolmodule.tpl.php. What am I doing wrong?

5

you are missing a hook_theme() function

see you defined a theme for your block by using:

$block['content'] = theme('coolmodule', array('myvar' => 'helloworld'));

but you never told it how to relate your theme with the template file, this work is done in hook_theme() function.

function coolmodule_theme() {
    $items['coolmodule'] = array(
        'template' => 'coolmodule',   // here comes your template name
        'render element' => 'content'
    );

    return $items;
}

Don't forget to clear your cache

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