同位素过滤-重置为起始位置时出现的问题 [英] Isotope Filtering - Issues when reset to start position

问题描述

我已经建立了一个同位素网格布局来显示项目，该布局还使用了同位素过滤来更快地对项目进行排序.

I have built a Isotope grid layout to display projects, which also uses the Isotope filtering to sort through the projects quicker.

在您尝试将下拉列表放回默认位置所有服务"和[& 所有部门".然后，所有项目都将被隐藏，而所有它们都应显示出来.

The filtering works fine until you try to put the dropdowns back to their default position "All Services" & "All Sectors". Then all the projects are hidden, when they should all be displayed.

http://www.ellyon.co.uk/wp/projects/

可能是Jquery冲突吗?我已经将我的functions.php添加为不是100％确定ive正确添加了脚本.

Is it possibly a Jquery conflict? I've added my functions.php as im not 100% sure ive added scripts correctly.

functions.php

functions.php

function add_isotope() {
    wp_register_script( 'isotope-init', get_template_directory_uri().'/js/isotope.js', array('jquery', 'isotope'),  true );
    wp_register_style( 'isotope-css', get_stylesheet_directory_uri() . '/styles/project.css' );

    wp_enqueue_script('isotope-init');
    wp_enqueue_style('isotope-css');
}
add_action( 'wp_enqueue_scripts', 'add_isotope' );

function modify_jquery() {
    if ( !is_admin() ) {
        wp_deregister_script( 'jquery' );
        wp_register_script( 'jquery', 'https://cdnjs.cloudflare.com/ajax/libs/jquery/2.1.3/jquery.min.js', false, '3.2.1' );
        wp_enqueue_script( 'jquery' );
    }
}
add_action( 'init', 'modify_jquery' );

Isotope.js

Isotope.js

// Grid
var $grid = $('.grid').isotope({
  itemSelector: '.grid-item',
  layoutMode: 'packery',
  columnWidth: '.grid-sizer',
  packery: {
    gutter: '.gutter-sizer'
  }
});


// state variable
var $expandedItem;

// expand when clicked
$grid.on( 'click', '.grid-item', function( event ) {
  var isExpanded = $expandedItem && event.currentTarget == $expandedItem[0];
  if ( isExpanded ) {
    // exit if already expanded
    return;
  }
  // un-expand previous
  if ( $expandedItem ) {
    $expandedItem.removeClass('gigante');
  }
  // set new & expand
  $expandedItem = $( event.currentTarget ).addClass('gigante');
  $grid.isotope('layout');
});

$grid.on( 'click', '.close-button button', function( event ) {
  $expandedItem.removeClass('gigante');
  // reset variable
  $expandedItem = null;
  $grid.isotope('layout');
  event.stopPropagation();
});

// Select Filters
$(function() {
    var $container = $('.grid'),
        $select = $('div#filterGroup select');
    filters = {};

    $container.isotope({
        itemSelector: '.grid-item'
    });
        $select.change(function() {
        var $this = $(this);

        var $optionSet = $this;
        var group = $optionSet.attr('data-filter-group');
    filters[group] = $this.find('option:selected').attr('data-filter-value');

        var isoFilters = [];
        for (var prop in filters) {
            isoFilters.push(filters[prop])
        }
        var selector = isoFilters.join('');

        $container.isotope({
            filter: selector
        });

        return false;
    });

    $grid.imagesLoaded().progress( function() {
      $grid.isotope('layout');
    });

});

推荐答案

星号*是特例，需要与其他过滤器值区别对待，例如:

Asterisk, *, is a special case and need to be handled differently from other filter values such that:

• 如果选择了一个或多个非星号值，则应忽略所有星号
• 如果未选择任何非星号值，则默认为单个星号(显示全部).

必须有多种方法来实施这些规则.这是一个:

There must be a number of ways to implement those rules. Here's one :

// Select Filters
$(function() {
    var $grid = $('.grid');
    var $selects = $('div#filterGroup select').change(function() {
        var selector = $selects.get().map(function(el) { // map the select elements ...
            return $(el).data('filter-value'); // ... to an array of filter-values
        }).filter(function(val) {
            return val !== '*' // filter out all '*' values
        }).join('') || '*'; // if joined array is empty-string, then default to a single '*'
        $grid.isotope({
            'filter': selector
        });
        return false;
    });
    ...
});

请注意，原始代码的filters对象只会增加不必要的复杂性. DOM非常擅长表示自己的状态，因此，与在javascript中维护持久性映射相比，每次将两个选择元素中的任何一个发生更改时，将两个选择元素直接直接映射到Array都更为简单.

Note that the original code's filters object only adds unnecessary complexity. The DOM is very good at representing its own state, so instead of maintaining a persistent mapping in javascript, it's simpler to map both select elements directly to Array every time there is a change to either one of them.

如果HTML的构造如下，则代码将稍微简化:

The code would simplify slightly if the HTML was constructed as follows :

<select class="filter option-set" data-filter-group="services">
    <option value="">All Services</option>
    <option value='.cladding'>Cladding</option>
    ...
</select>
<select class="filter option-set" data-filter-group="sectors">
    <option value="">All Sectors</option>
    <option value='.commerical'>Commerical</option>
    ...
</select>

然后，.filter()删除星号的需求消失了，剩下了:

Then, the need to .filter() out asterisks would disappear, leaving :

$(function() {
    var $grid = $('.grid');
    var $selects = $('div#filterGroup select').change(function() {
        var selector = $selects.get().map(function(el) { // map the select elements ...
            return $(el).val(); // ... to an array of values
        }).join('') || '*'; // if joined array is empty-string, then default to a single '*'
        $grid.isotope({
            'filter': selector
        });
        return false;
    });
    ...
});

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