Supersized.js如何将JSON编码的数据调用到设置脚本中

Question

好吧，在这方面我还是个新手，但这里是这样：

我正在使用wordpress网站上的supersized.js为首页创建全尺寸的背景图像幻灯片，这足以说明脚本已经设置好了，现在它可以工作了。我的下一个问题是让脚本使用wp_attachment来拉取图像

在我的functions.php文件中，我创建了以下内容：

// Get all of the images attached to the current post
// These images will be used in the Supersized homepage gallery
function supersized_get_images($size = 'full') {
    global $post;

    $photos = get_children( array('post_parent' => $post->ID, 'post_status' =>     'inherit', 'post_type' => 'attachment', 'post_mime_type' => 'image', 'order' => 'ASC', 'orderby' => 'menu_order ID') );

    $results = array();

    if ($photos) {
        foreach ($photos as $photo) {
        // get the correct URL for the selected size
        $results['image'] = wp_get_attachment_url($photo->ID);
    }
}
// encode into JSON format and pass to javascript supersettings.js
echo json_encode($results); 
}

所以不管怎样(我把echo放进去)，因为我想看看它是不是生成了正确的JSON格式。echo上的输出如下所示：

{"image":"http:\/\/pilarcorrias.secondvariety.org\/wp-content\/uploads\/0bcf5aa159739b260a77758c7d33699b.jpg"}

我假设这是正确的。Supersized有一个如下所示的设置文件：

jQuery(function($){
            $.supersized({

                //Functionality
                slideshow               :   1,      //Slideshow on/off
                autoplay                :   1,      //Slideshow starts playing automatically
                start_slide             :   1,      //Start slide (0 is random)
                random                  :   0,      //Randomize slide order (Ignores start slide)
                slide_interval          :   3000,   //Length between transitions
                transition              :   1,      //0-None, 1-Fade, 2-Slide Top, 3-Slide Right, 4-Slide Bottom, 5-Slide Left, 6-Carousel Right, 7-Carousel Left
                transition_speed        :   500,    //Speed of transition
                new_window              :   1,      //Image links open in new window/tab
                pause_hover             :   0,      //Pause slideshow on hover
                keyboard_nav            :   1,      //Keyboard navigation on/off
                performance             :   1,      //0-Normal, 1-Hybrid speed/quality, 2-Optimizes image quality, 3-Optimizes transition speed // (Only works for Firefox/IE, not Webkit)
                image_protect           :   1,      //Disables image dragging and right click with Javascript
                image_path              :   '/../../../slideshow/', //Default image path

                //Size & Position
                min_width               :   0,      //Min width allowed (in pixels)
                min_height              :   0,      //Min height allowed (in pixels)
                vertical_center         :   1,      //Vertically center background
                horizontal_center       :   1,      //Horizontally center background
                fit_portrait            :   1,      //Portrait images will not exceed browser height
                fit_landscape           :   0,      //Landscape images will not exceed browser width

                //Components
                navigation              :   1,      //Slideshow controls on/off
                thumbnail_navigation    :   1,      //Thumbnail navigation
                slide_counter           :   1,      //Display slide numbers
                slide_captions          :   1,      //Slide caption (Pull from "title" in slides array)
                slides                  :   [       //Slideshow Images
                                                    {image : 'http://buildinternet.s3.amazonaws.com/projects/supersized/3.1/slides/quietchaos-kitty.jpg', title : 'Quiet Chaos by Kitty Gallannaugh', url : 'http://www.nonsensesociety.com/2010/12/kitty-gallannaugh/'},  
                                                    {image : 'http://buildinternet.s3.amazonaws.com/projects/supersized/3.1/slides/wanderers-kitty.jpg', title : 'Wanderers by Kitty Gallannaugh', url : 'http://www.nonsensesociety.com/2010/12/kitty-gallannaugh/'},  
                                                    {image : 'http://buildinternet.s3.amazonaws.com/projects/supersized/3.1/slides/apple-kitty.jpg', title : 'Applewood by Kitty Gallannaugh', url : 'http://www.nonsensesociety.com/2010/12/kitty-gallannaugh/'}  
                                            ]


            }); 
        });

该文件的最后一行声明了参数slides，然后将图像引用传递给幻灯片。现在我已经检查过了，幻灯片在没有网址和标题信息的情况下运行得很好，这意味着我只需要给它一个image对象，这里是文件URI，这意味着我的一些JSON应该可以逐字工作。现在我知道我正确地编码了PHP数组，我如何将它放入上面的supersettings.js文件中…我到处寻找，但没有找到任何可以解释它的东西，我可以用我的小大脑来解释它。任何帮助都将不胜感激。

Answer 1

干得好！此外，如果要从数组中排除缩略图图像：

function supersized_get_images($size = 'full') {
global $post;
$thumb_id = get_post_thumbnail_id(get_the_ID()); // gets the post thumbnail ID
$photos = get_children( array('post_parent' => $post->ID, 'post_status' => 'inherit', 'post_type' => 'attachment', 'post_mime_type' => 'image', 'order' => 'ASC', 'orderby' => 'menu_order ID', 'exclude' => $thumb_id) );

Answer 2

解决了它，我是一个数字-我只是把脚本放在函数文件中，并将其命名为wp-footer钩子，它允许我在脚本本身中回显json变量。这里是我完整使用的代码，供其他试图使用supersized和Wordpress附件系统的人参考：

调用附件并创建json数组：

// Get all of the images attached to the current post
// These images will be used in the Supersized homepage gallery

function supersized_get_images($size = 'full') {
global $post;

$photos = get_children( array('post_parent' => $post->ID, 'post_status' => 'inherit', 'post_type' => 'attachment', 'post_mime_type' => 'image', 'order' => 'ASC', 'orderby' => 'menu_order ID') );

$results = array();

if ($photos) {
    foreach ($photos as $photo) {
    $keys [] = $photo->ID;
    $captions [] = $photo->post_excerpt;
    $descriptions [] = $photo->post_content;
        // get the correct URL for the selected size
        $results[] = array('image' => wp_get_attachment_url($photo->ID, 'full'), 'title' => '', 'url' => get_attachment_link($photo->ID));
    }
}
return str_replace('\/', '/', json_encode($results));
}

好了，这样就得到了图像，创建了数组，也正确地格式化了URL，去掉了转义的斜杠，看起来像这样: http:\/\/www。接下来，我必须将脚本嵌入到主体标记之前的页脚中，如下所示：

function super_settings() { ?>
<script type="text/javascript">
jQuery(function($){
            $.supersized({

                //Functionality
                slideshow               :   1,      //Slideshow on/off
                autoplay                :   1,      //Slideshow starts playing automatically
                start_slide             :   1,      //Start slide (0 is random)
                random                  :   0,      //Randomize slide order (Ignores start slide)
                slide_interval          :   3000,   //Length between transitions
                transition              :   1,      //0-None, 1-Fade, 2-Slide Top, 3-Slide Right, 4-Slide Bottom, 5-Slide Left, 6-Carousel Right, 7-Carousel Left
                transition_speed        :   500,    //Speed of transition
                new_window              :   1,      //Image links open in new window/tab
                pause_hover             :   0,      //Pause slideshow on hover
                keyboard_nav            :   1,      //Keyboard navigation on/off
                performance             :   1,      //0-Normal, 1-Hybrid speed/quality, 2-Optimizes image quality, 3-Optimizes transition speed // (Only works for Firefox/IE, not Webkit)
                image_protect           :   1,      //Disables image dragging and right click with Javascript
                image_path              :   '/../../../slideshow/', //Default image path

                //Size & Position
                min_width               :   0,      //Min width allowed (in pixels)
                min_height              :   0,      //Min height allowed (in pixels)
                vertical_center         :   1,      //Vertically center background
                horizontal_center       :   1,      //Horizontally center background
                fit_portrait            :   1,      //Portrait images will not exceed browser height
                fit_landscape           :   0,      //Landscape images will not exceed browser width

                //Components
                navigation              :   0,      //Slideshow controls on/off
                thumbnail_navigation    :   1,      //Thumbnail navigation
                slide_counter           :   1,      //Display slide numbers
                slide_captions          :   1,      //Slide caption (Pull from "title" in slides array)
                slides                  :   <?php echo supersized_get_images(); ?>


            }); 
        });

</script>
<?php }
add_action('wp_footer', 'super_settings');

这将向wp_footer添加一个操作，该操作调用super_settings函数，将脚本嵌入到脚注中，您可以看到脚本中的最后一行回显supersized_get_images()函数，并将键和值数组直接输出到javascript中。

我很高兴我可以自己回答这个问题，因为我觉得问这个问题很尴尬，但我希望这能帮助那些想要使用supersized的人，而不必使用wordpress中的自定义上传路径或FTP -只需使用标准的wordpress帖子库即可。]您所要做的就是在您想要显示背景的页面上包含supersized.js和设置脚本。维奥拉！如果任何人有改进，他们可以通过各种方式提出建议，请在这里张贴。

Answer 3

否则，如果你不想混淆php、json、php、json等等；如果你想要一种清晰的方法来解析json文件，那就用getJson来实现。

            jQuery(function($){


            var urltojson = 'getjson.json';




            $.getJSON(urltojson, function(photos){


            $.supersized({



                // Functionality

                slide_interval          :   5000,       // Length between transitions

                transition              :   6,          // 0-None, 1-Fade, 2-Slide Top, 3-Slide Right, 4-Slide Bottom, 5-Slide Left, 6-Carousel Right, 7-Carousel Left

                transition_speed        :   1000,       // Speed of transition



                // Components                           

                slide_links             :   'blank',    // Individual links for each slide (Options: false, 'num', 'name', 'blank')

                slides                  :   photos



            });
            });

        });

如果Json完全加载，则将启动supersized。这一切都没有用Javascript编写肮脏的php代码。