Chamar posts – Template Page

Boa noite Pessoal,
Estou utilizando um tema para um site de fotografia, gostaria de alterar um template para que ele chamasse apenas os posts de determinada categoria.
Vou fazer novos modelos de página para cada categoria que preciso chamar, porém não estou conseguindo definir no código o nome das categorias que quero chamar, onde devo definir as categorias?

<?php
/**
 * Template Name: Gallery Layout Eventos
 *
 * @package FotoGraphy
 */
get_header();

$gallery_layout = esc_attr(get_theme_mod('fotography_gallery_page_section','gridview'));
$gallery_layout_colums = esc_attr(get_theme_mod('fotography_gallery_grid_section',3));
$gallery_author = esc_attr(get_theme_mod('fotography_gallery_author_section'));
$gallery_postdate = esc_attr(get_theme_mod('fotography_gallery_postdate_section'));
$gallery_meta_cat = esc_attr(get_theme_mod('fotography_gallery_meta_category_section','yes'));
$limit = esc_attr(get_theme_mod('fotography_gallelry_desc_section',50));
$cageory_id = esc_attr(get_theme_mod('cstmzr_categories_gallery'));
?>

<?php do_action('fotography_title'); ?>

<div class="foto-container">    

        <?php
        if (!empty($gallery_layout) && $gallery_layout == 'gridview') {
            $gallery_layout_class = 'fg-grid-view';
        } else if (!empty($gallery_layout) && $gallery_layout == 'sortable') {
            $gallery_layout_class = 'fg-sortable-grid';
        } else if (!empty($gallery_layout) && $gallery_layout == 'mediumthumbslistview') {
            $gallery_layout_class = 'fg-thumb-list-view';
        } else if (!empty($gallery_layout) && $gallery_layout == 'largethumbslistview') {
            $gallery_layout_class = 'fg-large-thumbs-list-view';
        } else {
            $gallery_layout_class = 'fg-large-thumbs-list-view';
        }
        ?>

        <?php if ($gallery_layout == 'largethumbslistview') { ?>
            <div id="primary" class="content-area">
            <?php } else{ ?>

                <div class="full-content-area">
                <?php } ?>

                    <?php if (!empty($gallery_layout) && $gallery_layout == 'sortable') : ?>
                        <header class="sort-table">
                            <?php
                            $categories = explode(',', $cageory_id);
                            if (!empty($categories) && !is_wp_error($categories)):
                                echo "<ul class='button-group filters-button-group'>";
                                if (!empty($categories)) {
                                    echo '<li class="button is-checked" data-filter="*">' . __('All', 'fotography') . '';
                                }
                                foreach ($categories as $category) :
                                    $cat_detail = get_category($category);
                                    echo '<li class="button" data-filter=.' . $cat_detail->slug . '>' . $cat_detail->name . '';
                                endforeach;
                                echo "";
                            endif;
                            wp_reset_query();
                            ?>
                        </header>
                    <?php endif; ?>

                    <section class="<?php echo $gallery_layout_class; ?> clearfix">
                            <?php
                                 $post_category = explode(',', $cageory_id);
                                 $paged = ( get_query_var('paged') ) ? get_query_var('paged') : 1;
                                 $args = array('post_type' => 'post', 'paged' => $paged,
                                     'tax_query' => array(
                                         array(
                                             'taxonomy' => 'category',
                                             'field' => 'id',
                                             'terms' => $post_category
                                         )
                                     )
                                 );
                                 $query = new WP_Query($args);
                                 if ($query->have_posts()): while ($query->have_posts()) : $query->the_post();
                                         $term_lists = wp_get_post_terms($post->ID, 'category', array("fields" => "all"));
                                         $term_slugs = array();
                                         foreach ($term_lists as $term_list) {
                                             $term_slugs[] = $term_list->slug;
                                         }
                                         $term_slugs = join(' ', $term_slugs);
                                         ?>
                                <div class="fb-gallery <?php if (!empty($gallery_layout) && $gallery_layout == 'sortable') { echo 'element-item '; echo esc_attr($term_slugs); } ?>">                

                                    <?php
                                    if (has_post_thumbnail()) :
                                        if ($gallery_layout == 'gridview' || $gallery_layout == 'sortable') {
                                            $image = wp_get_attachment_image_src(get_post_thumbnail_id(get_the_ID()), 'fotography-thumb-view-withslider', true);
                                        }
                                        if ($gallery_layout == 'largethumbslistview') {
                                            $image = wp_get_attachment_image_src(get_post_thumbnail_id(get_the_ID()), 'fotography-bxslider', true);
                                        }

                                        if ($gallery_layout == 'mediumthumbslistview') {
                                            $image = wp_get_attachment_image_src(get_post_thumbnail_id(get_the_ID()), 'fotography-grid-medium', true);
                                        }
                                    endif;
                                    $full_image = wp_get_attachment_image_src(get_post_thumbnail_id(get_the_ID()), 'full', true);
                                    ?>
                                    <?php if ($gallery_layout == 'gridview' || $gallery_layout == 'sortable') { ?>
                                        <div class="fg-grid-img">
                                            <a>">
                                            <?php if(!empty($image[0])) : ?>
                                                <img src="<?php echo esc_url($image[0]); ?>" alt="<?php the_title(); ?>">
                                            <?php else : $slides_noimage = get_template_directory_uri().'/images/noimage1.jpg'; ?>
                                                <img src="<?php echo esc_url($slides_noimage); ?>" alt="<?php the_title(); ?>">
                                            <?php endif; ?>
                                            </a>
                                        </div>

                                        <div class="fg-grid-hover">
                                            <h6><a>"><?php the_title(); ?></a></h6>

                                            <div class="gallery-open-link">
                                                <a>" rel="gallryLight"><i class="fa fa-eye"></i></a>
                                               <a>"><i class="fa fa-link"></i></a>
                                            </div>

                                            <div class="fg-masonary-gallery-cat">
                                                <?php if ($gallery_author == 'yes') : ?>
                                                    <span><i class="fa fa-user"></i> <?php the_author(); ?></span>
                                                <?php endif; ?>
                                                <?php if ($gallery_postdate == 'yes') : ?>
                                                    <span><i class="fa fa-clock-o"></i> <?php the_time(get_option('date_format')); ?></span>
                                                <?php endif; ?>
                                                <?php if ($gallery_meta_cat == 'yes') : ?>
                                                    <span><i class="fa fa-folder-open"></i> <?php the_category(','); ?></span>
                                                <?php endif; ?>
                                            </div>

                                        </div>
                                    <?php } ?>

                                    <!-- Mid Thumbinal view -->
                                    <?php if ($gallery_layout == 'mediumthumbslistview' || $gallery_layout == 'largethumbslistview') { ?>
                                        <div class="clearfix">
                                        <div class="fg-gallery-list-thumb" style="background-image: url(<?php echo esc_url($image[0]); ?>) ">
                                        </div>      

                                        <div class="fg-gallery-list-detail">
                                            <h5>
                                                <a>"><?php the_title(); ?></a>
                                            </h5>
                                            <div class="entry-meta">
                                                <?php if ($gallery_author == 'yes') : ?>
                                                    <span><i class="fa fa-user"></i> <?php the_author(); ?></span>
                                                <?php endif; ?>
                                                <?php if ($gallery_postdate == 'yes') : ?>
                                                    <span><i class="fa fa-clock-o"></i><?php the_time(get_option('date_format')); ?></span>
                                                <?php endif; ?>
                                                <?php if ($gallery_meta_cat == 'yes') : ?>
                                                    <span><i class="fa fa-folder-open"></i> <?php the_category(','); ?></span>
                                                <?php endif; ?>
                                            </div>

                                            <div class="fg-gallery-list-excerpt">
                                                <?php echo fotography_word_count(get_the_excerpt(), esc_attr($limit)); ?>
                                                <div class="bttn-wrap">
                                                <a>"><?php _e('Read More','fotography'); ?></a></div>
                                            </div>
                                        </div>
                                        </div>
                                    <?php } ?>

                                </div>
                                <?php
                            endwhile;
                        endif;
                        wp_reset_query();
                        ?>
                    </section>

                <?php if ( $gallery_layout == 'gridview' || $gallery_layout == 'mediumthumbslistview' || $gallery_layout == 'largethumbslistview') {
                        if (function_exists("pagination")) {
                            pagination($query->max_num_pages);
                        }
                    } ?>
            </div>

            <?php if ($gallery_layout == 'largethumbslistview') { ?>
                <div id="secondary" class="widget-area">
                    <?php
	                    if (is_active_sidebar('fotography-gallery-sidebar')) {
	                        dynamic_sidebar('fotography-gallery-sidebar');
	                    }
                    ?>
                </div><!-- #secondary -->
            <?php } ?>

</div>

<?php get_footer();