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Controller 控制器代码src/Controller/BlogController.php at line 76

/**
 * NOTE: The $post controller argument is automatically injected by Symfony
 * after performing a database query looking for a Post with the 'slug'
 * value given in the route.
 *
 * See https://symfony.com/doc/current/bundles/SensioFrameworkExtraBundle/annotations/converters.html
 */
public function postShow(Post $post): Response
{
    // Symfony's 'dump()' function is an improved version of PHP's 'var_dump()' but
    // it's not available in the 'prod' environment to prevent leaking sensitive information.
    // It can be used both in PHP files and Twig templates, but it requires to
    // have enabled the DebugBundle. Uncomment the following line to see it in action:
    //
    // dump($post, $this->getUser(), new \DateTime());
    //
    // The result will be displayed either in the Symfony Profiler or in the stream output.
    // See https://symfony.com/doc/current/profiler.html
    // See https://symfony.com/doc/current/templates.html#the-dump-twig-utilities
    //
    // You can also leverage Symfony's 'dd()' function that dumps and
    // stops the execution

    return $this->render('blog/post_show.html.twig', ['post' => $post]);
}

Twig 模板代码templates/blog/post_show.html.twig at line 1

{% extends 'base.html.twig' %}

{% block body_id 'blog_post_show' %}

{% block main %}
    <h1>{{ post.title }}</h1>

    <p class="post-metadata">
        <span class="metadata"><i class="fa fa-calendar"></i> {{ post.publishedAt|format_datetime('long', 'medium', '', 'UTC') }}</span>
        <span class="metadata"><i class="fa fa-user"></i> {{ post.author.fullName }}</span>
    </p>

    {{ post.content|markdown_to_html|sanitize_html }}

    {{ include('blog/_post_tags.html.twig') }}

    <div id="post-add-comment" class="well">
        {# The 'IS_AUTHENTICATED_FULLY' role ensures that the user has entered
        their credentials (login + password) during this session. If they
        are automatically logged via the 'Remember Me' functionality, they won't
        be able to add a comment.
        See https://symfony.com/doc/current/security/remember_me.html#forcing-the-user-to-re-authenticate-before-accessing-certain-resources
        #}
        {% if is_granted('IS_AUTHENTICATED_FULLY') %}
            {{ render(controller('App\\Controller\\BlogController::commentForm', {'id': post.id})) }}
        {% else %}
            <p>
                <a class="btn btn-success" href="{{ path('security_login', {'redirect_to': app.request.pathInfo}) }}">
                    <i class="fa fa-sign-in" aria-hidden="true"></i> {{ 'action.sign_in'|trans }}
                </a>
                {{ 'post.to_publish_a_comment'|trans }}
            </p>
        {% endif %}
    </div>

    <h3>
        <i class="fa fa-comments" aria-hidden="true"></i> {{ 'post.num_comments'|trans({ 'count': post.comments|length }) }}
    </h3>

    {% for comment in post.comments %}
        <div class="row post-comment">
            <a name="comment_{{ comment.id }}"></a>
            <h4 class="col-sm-3">
                <strong>{{ comment.author.fullName }}</strong> {{ 'post.commented_on'|trans }}
                {# it's not mandatory to set the timezone in localizeddate(). This is done to
                   avoid errors when the 'intl' PHP extension is not available and the application
                   is forced to use the limited "intl polyfill", which only supports UTC and GMT #}
                <strong>{{ comment.publishedAt|format_datetime('medium', 'short', '', 'UTC') }}</strong>
            </h4>
            <div class="col-sm-9">
                {{ comment.content|markdown_to_html|sanitize_html }}
            </div>
        </div>
    {% else %}
        <div class="post-comment">
            <p>{{ 'post.no_comments'|trans }}</p>
        </div>
    {% endfor %}
{% endblock %}

{% block sidebar %}
    {% if is_granted('edit', post) %}
        <div class="section">
            <a class="btn btn-lg btn-block btn-success" href="{{ path('admin_post_edit', {id: post.id}) }}">
                <i class="fa fa-edit" aria-hidden="true"></i> {{ 'action.edit_post'|trans }}
            </a>
        </div>
    {% endif %}

    {# the parent() function includes the contents defined by the parent template
      ('base.html.twig') for this block ('sidebar'). This is a very convenient way
      to share common contents in different templates #}
    {{ parent() }}

    {{ show_source_code(_self) }}
    {{ include('blog/_rss.html.twig') }}
{% endblock %}