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Add a Blog Post Publication Date

In Part Two, we displayed a nicely formatted publication date on the blog post page.

Finally, in Part Three we shall change the blog listing.

Steps - Part Three

In the Settings section, expand the Partial Views > Components > LatestBlogPosts folder.
- Select Default.cshtml.
Scroll down to find the foreach loop.
Declare a new publicationDate variable as the first thing within the loop:
```
var publicationDate = post.Value<DateTime>("publicationDate");
```
Locate the blogpost-date element a bit further down and change it to use the new variable:
```
<small class="blogpost-date">@publicationDate.ToLongDateString()</small>
```
- The ToLongDateString() method is called on the publicationDate variable to format it as a long date string.
Redefine the blogposts variable before the first div tag - this will be used for sorting the posts:
```
@{
    var blogposts = Model.BlogPosts.OrderByDescending(x => x.Value<DateTime>("publicationDate")).ToList();
}
```
- Because we are sorting by a custom property we need to use the generic Value method.

You can use Query builder to construct your queries in a more structured and reusable manner. Use the UmbracoHelper or the IPublishedContentQuery interface to build queries dynamically. For more information, see the Querying & Models article.

Locate the @foreach loop, and change Model.Blostposts to the variable created above: blogposts:
```
@foreach (IPublishedContent post in blogposts)
```
Save the partial view - a confirmation message should appear confirming that the Partial view has been saved.

Now view both the Blog overview and the blog posts themselves in the browser to confirm that all is working as expected.

Summary

Nice job! In this lesson, you've learned what a Document Type is and how to add a new Property to it. You've also learned how to change Templates and sort by custom Properties.

See the entire file: Default.cshtml

Default.cshtml

@using Umbraco.Cms.Core.Models.PublishedContent
@using Umbraco.Extensions
@model Umbraco.SampleSite.Models.LatestBlogPostsViewModel;
@{
    var blogposts = Model.BlogPosts.OrderByDescending(x => x.Value<DateTime>("publicationDate")).ToList();
}
<div class="blogposts">
    @foreach (IPublishedContent post in blogposts)
    {
        var publicationDate = post.Value<DateTime>("publicationDate");
        <a href="@post.Url()" class="blogpost">
            <div class="blogpost-meta">
                <small class="blogpost-date">@publicationDate.ToLongDateString()</small>
                <small class="blogpost-cat">
                    @await Html.PartialAsync("~/Views/Partials/CategoryLinks.cshtml", post.Value<IEnumerable<string>>("categories"))
                </small>
            </div>
            <h3 class="blogpost-title">@post.Value("pageTitle")</h3>
            <div class="blogpost-excerpt">@post.Value("excerpt")</div>
        </a>
    }
    @if (Model.BlogPosts.Count() < Model.Total)
    {
        <div class="pagination">
            <nav class="nav-bar nav-bar--center">
                @if (Model.Page <= 1)
                {
                    <span class="nav-link nav-link--black nav-link--disabled">Prev</span>
                }
                else
                {
                    <a class="nav-link nav-link--black" href="@(Model.Url + "?page=" + (Model.Page - 1))">Prev</a>
                }
                @for (int i = 1; i <= Model.PageCount; i++)
                {
                    <a class="nav-link nav-link--black @(Model.Page == i ? " nav-link--active" : null)" href="@(Model.Url + "?page=" + i)">@i</a>
                }
                @if (Model.Page == Model.PageCount)
                {
                    <span class="nav-link nav-link--black nav-link--disabled">Next</span>
                }
                else
                {
                    <a class="nav-link nav-link--black" href="@(Model.Url + "?page=" + (Model.Page + 1))">Next</a>
                }
            </nav>
        </div>
    }
</div>

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