PHP code example of opine / lightncandy

    
        
<?php
require_once('vendor/autoload.php');

/* Start to develop here. Best regards https://php-download.com/ */

    

opine / lightncandy example snippets

// THREE STEPS TO USE LIGHTNCANDY
// Step 1.  "Welcome {{name}} , You win \${{value}} dollars!!\n";
$phpStr = LightnCandy::compile($template);  // compiled PHP code in $phpStr

// Step 2A. (Usage 1) use LightnCandy::prepare to get rendering function
//   DEPRECATED , it may hpStr);


// Step 2B. (Usage 2) Store your render function in a file 
//   You decide your compiled template file path and name, save it.
//   You can load your render function by 

LightnCandy::compile($template, Array(
    'flags' => LightnCandy::FLAG_ERROR_LOG | LightnCandy::FLAG_STANDALONE
));

LightnCandy::compile($template, Array(
    'partials' => Array(
        'name' => 'template: {{name}}',
    ),
));

// Loading partial from file system only when valid directory is provided by basedir option
// '.' means getpwd()
LightnCandy::compile($template, Array(
    'basedir' => '.'
));

// Multiple basedir and fileext are supported
LightnCandy::compile($template, Array(
    'flags' => LightnCandy::FLAG_STANDALONE,
    'basedir' => Array(
        '/usr/local/share/handlebars/templates',
        '/usr/local/share/my_project/templates',
        '/usr/local/share/my_project/partials',
    ),
    'fileext' => Array(
        '.tmpl',
        '.mustache',
        '.handlebars',
    )
));

LightnCandy::compile($template, Array(
    // FLAG_NAMEDARG is rray(
        // 1. You may pass your function name
        //    When the function is not exist, you get compile time error
        //    In this case, the helper name is same with function name
        //    Template: {{my_helper_functoin ....}}
        'my_helper_function',

        // 2. You may also provide a static call from a class
        //    In this case, the helper name is same with provided full name
        //    **DEPRECATED** It is not valid in handlebars.js 
        //    Template: {{myClass::myStaticMethod ....}}
        'myClass::myStaticMethod',

        // 3. You may also provide an alias name for helper function
        //    This help you to mapping different function to a preferred helper name
        //    Template: {{helper_name ....}}
        'helper_name' => 'my_other_helper',

        // 4. Alias also works well for static call of a class
        //    This help you to mapping different function to a preferred helper name
        //    Template: {{helper_name2 ....}}
        'helper_name2' => 'myClass::func',

        // 5. Anonymous function should be provided with alias
        //    The function will be 

function myhelper ($args, $named) {
    if (count($args)) {
        // handle no name arguments....
    }
    // access foo=bar from $named['foo'] ...
}

// escaping is handled by lightncandy and decided by template
// if the helper is in {{ }} , you get 'The U&ME Helper is ececuted!'
// if the helper is in {{{ }}} , you get 'The U&ME Helper is executed!'
return 'The U&ME Helper is executed!';

// Same as above because the escape_flag is DEFAULT
// 0, false, null, undefined, or '' means DEFAULT
return Array('The U&ME Helper is executed!');
return Array('The U&ME Helper is executed!', false);
return Array('The U&ME Helper is executed!', 0);

// escaping is handled by the helper, lightncandy will do nothing
// No matter in {{ }} or {{{ }}} , you get 'Exact&Same output \' \" Ya!'
return Array('Exact&Same output \' " Ya!', 'raw');

// force lightncandy escaping the helper result
// No matter in {{ }} or {{{ }}} , you get 'Not&Same output ' " Ya!'
return Array('Not&Same output \' " Ya!', 'enc');

// force lightncandy escaping the helper result in handlebars.js way
// No matter in {{ }} or {{{ }}} , you get 'Not&Same output ' " Ya!'
return Array('Not&Same output \' " Ya!', 'encq');

LightnCandy::compile($template, Array(
    'blockhelpers' => Array(    // The usage of blockhelpers option is similar with helpers option.
        'my_helper_function',   // You can use function name, class name with static method,
        ...                     // and choose preferred helper name by providing key name.
    )
));

// Only render inner block when input > 5
// {{#helper_iffivemore total_people}}More then 5 people, discount!{{/helper_iffivemore}}
function helper_iffivemore($cx, $args, $named) {
    return $args[0] > 5 ? $cx : null;
}

// You can use named arguments, too
// {{#helper_if value=people logic="more" tovalue=5}}Yes the logic is true{{/helper_if}}
function helper_if($cx, $args, $named) {
    switch ($args['logic']) {
    case 'more':
        return $named['value'] > $named['tovalue'] ? $cx : null;
    case 'less':
        return $named['value'] < $named['tovalue'] ? $cx : null;
    case 'eq':
        return $named['value'] == $named['tovalue'] ? $cx : null;
    }
}

// Provide default values for name and salary
// {{#helper_defaultpeople}}Hello, {{name}} ....Your salary will be {{salary}}{{/helper_defaultpeople}}
function helper_defaultpeople($cx, $args, $named) {
    if (!isset($cx['name'])) {
        $cx['name'] = 'Sir';
    }
    $cx['salary'] = isset($cx['salary']) ? '$' . $cx['salary'] : 'unknown';
    return $cx;
}

// Provide specific context to innerblock
// {{#helper_sample}}Preview Name:{{name}} , Salary:{{salary}}.{{/helper_sample}}
function helper_sample($cx, $args) {
    return Array('name' => 'Sample Name', 'salary' => 'Sample Salary');
}

// Provide specific context to innerblock, then loop on it.
// {{#helper_categories}}{{#each .}}<li><a href="?id={{id}}">{{name}}</a></li>{{/each}}{{/helper_categories}}
function helper_categories($cx, $args) {
    return getMyCategories(); // Array('category1', 'category2', ...)
}

// LightnCandy sample, #mywith works same with #with
$php = LightnCandy::compile($template, Array(
    'flags' => LightnCandy::FLAG_HANDLEBARSJS,
    'hbhelpers' => Array(
        'mywith' => function ($context, $options) {
            return $options['fn']($context);
        }
    )
));

// LightnCandy sample, #myeach works same with #each
$php = LightnCandy::compile($template, Array(
    'flags' => LightnCandy::FLAG_HANDLEBARSJS,
    'hbhelpers' => Array(
        'myeach' => function ($context, $options) {
            $ret = '';
            foreach ($context as $cx) {
                $ret .= $options['fn']($cx);
            }
            return $ret;
        }
    )
));

// LightnCandy sample, #myif works same with #if
$php = LightnCandy::compile($template, Array(
    'flags' => LightnCandy::FLAG_HANDLEBARSJS,
    'hbhelpers' => Array(
        'myif' => function ($conditional, $options) {
            if ($conditional) {
                return $options['fn']();
            } else {
                return $options['inverse']();
            }
        }
    )
));

$php = LightnCandy::compile($template, Array(
    'flags' => LightnCandy::FLAG_HANDLEBARSJS,
    'hbhelpers' => Array(
        'sample' => function ($arg1, $arg2, $options) {
            // All hashed arguments are in $options['hash']
        }
    )
));

$template = "Hello! {{name}} is {{gender}}.
Test1: {{@root.name}}
Test2: {{@root.gender}}
Test3: {{../test3}}
Test4: {{../../test4}}
Test5: {{../../.}}
Test6: {{../../[test'6]}}
{{#each .}}
each Value: {{.}}
{{/each}}
{{#.}}
section Value: {{.}}
{{/.}}
{{#if .}}IF OK!{{/if}}
{{#unless .}}Unless not OK!{{/unless}}
";

// compile to debug version
$php = LightnCandy::compile($template, Array(
    'flags' => LightnCandy::FLAG_RENDER_DEBUG | LightnCandy::FLAG_HANDLEBARSJS
));

// Get the render function
$renderer = LightnCandy::prepare($php);

// error_log() when missing data:
//   LCRun3: [gender] is not exist
//   LCRun3: ../[test] is not exist
$renderer(Array('name' => 'John'), LCRun3::DEBUG_ERROR_LOG);

// Output visual debug template with ANSI color:
echo $renderer(Array('name' => 'John'), LCRun3::DEBUG_TAGS_ANSI);

// Output debug template with HTML comments:
echo $renderer(Array('name' => 'John'), LCRun3::DEBUG_TAGS_HTML);