# Showing post based on category

**URL:** <https://forum.wixstudio.com/t/showing-post-based-on-category/59554>\
**Category:** Ask the community\
**Tags:** wix-blog, question, code, wix\
**Created:** [May 28, 2024, 6:03pm UTC](https://forum.wixstudio.com/t/showing-post-based-on-category/59554 "2024-05-28T18:03:51Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![Gus\_ca](https://sea1.discourse-cdn.com/wix/user_avatar/forum.wixstudio.com/gus_ca/32/25999_2.png) [@Gus\_ca](https://forum.wixstudio.com/u/Gus_ca)\
**Post date:** [May 28, 2024, 6:03pm UTC](https://forum.wixstudio.com/t/showing-post-based-on-category/59554/1 "2024-05-28T18:03:51Z")

</div>

**Question:**  
I’m trying to show posts only from the “News” category, but the error below always appears. Does anyone have an idea?

 ![image](https://us1.discourse-cdn.com/wix/original/3X/f/5/f5ec04428ff943bb951773166ea92f1e0c1d9612.png)

**Product:**  
Wix Editor, Velo

**Additional information:**

```javascript
import wixData from 'wix-data';
import wixLocation from 'wix-location';
// Função para obter IDs dos posts da categoria "Notícias"
function getPostsFromNewsCategory() {
    return wixData.query('Blog/Categories')
        .eq('Label', 'Notícias')
        .find()
        .then(results => {
            if (results.items.length > 0) {
                return JSON.parse(results.items[0].Posts); // Convertendo a string JSON para array de IDs
            } else {
                return [];
            }
        })
        .catch(error => {
            console.error("Erro ao consultar a categoria:", error);
            return [];
        });
}

// Função para obter os posts por IDs
function getPostsByIds(postIds) {
    return wixData.query('Blog/Posts')
        .hasSome('_id', postIds)
        .find()
        .then(results => {
            return results.items;
        })
        .catch(error => {
            console.error("Erro ao consultar posts:", error);
            return [];
        });
}

// Função para truncar texto
function truncateText(text, maxLength) {
    if (text.length > maxLength) {
        return text.substring(0, maxLength) + '...';
    }
    return text;
}

// Função para carregar e exibir posts da categoria "Notícias"
function loadNewsPosts() {
    getPostsFromNewsCategory()
        .then(postIds => {
            if (postIds.length > 0) {
                return getPostsByIds(postIds);
            } else {
                console.log("Nenhum post encontrado na categoria Notícias.");
                return [];
            }
        })
        .then(posts => {
            if (posts.length > 0) {
                let displayedPostIds = [];
                
                posts.forEach((post, postIndex) => {
                    if (!displayedPostIds.includes(post._id)) {
                        let truncatedTitle = truncateText(post.title, 3 * 40);

                        $w("#postNewsTitle" + postIndex).text = truncatedTitle;
                        $w("#postNewsSubTitle" + postIndex).text = truncatedTitle;

                        let postUrl = post.postPageUrl; // Substitua pelo caminho real para os seus posts
                        $w("#postNewsTitle" + postIndex).onClick(() => {
                            wixLocation.to(postUrl);
                        });

                        displayedPostIds.push(post._id);
                    }
                });
            } else {
                console.log("Nenhum post encontrado na categoria Notícias.");
            }
        })
        .catch(error => {
            console.error("Erro ao carregar posts da categoria Notícias:", error);
        });
}

// Chame a função para carregar os posts ao carregar a página
$w.onReady(function () {
    loadNewsPosts();
});

```