我有一个帮助函数,我已将其设置为将时间戳转换为Laravel 4中的可读日期。该函数在文件StringEdit.php中称为“getDate”(在“helpers”文件夹中)。我知道这个功能有效。
我试图在jquery调用中使用此函数,该调用从数据库获取数据并将其加载到div id(每次单击时加载更多数据)。这是代码:
<script type="text/javascript">
$(function() {
<?php $number_of_posts = 2; ?>;
<?php $_SESSION['posts_start'] = isset($_SESSION['posts_start']) ? $_SESSION['posts_start'] : $number_of_posts; ?>;
//<?php $_SESSION['posts_start'] = $_SESSION['posts_start'] ? $_SESSION['posts_start'] : $number_of_posts; ?>;
//<?php $_SESSION['posts_start'] = 2 ?>;
//var start = <?php echo $_SESSION['posts_start']; ?>;
var start = {{ Session::get('posts_start', 2) }};
var initialPosts = <?php echo Fanartist::friend_activity_json(0, $_SESSION['posts_start']); ?>;
//var initialPosts = <?php echo Fanartist::friend_activity_json(0, 2); ?>;
var desiredPosts = <?php echo $number_of_posts; ?>;
var template = '<tr>'
+'<td>'
+'<div class="friend_image">'
+'<img src="https://graph.facebook.com/fbid/picture" alt="" height="65" width="65" class="img-rounded">'
+'</div>'
+'</td>'
+'<td>'
+'<div class="friend_activity">'
+'<span class="activity_text"><span class="first_name"></span> <span class="last_name"></span> indicated that <span class="gender"></span> wants <a href="/artists/artist_id"><span class="stage_name"></span></a> to come to <span class="city"></span></span>'
+'<br><span class="activity_subtext"><span class="created_at"></span></span>'
+'</div>'
+'</td>'
+'</tr>';
var activity = $('#activity'),
// Element to load the posts
content = activity.find('.content'),
// the more button
more = activity.find('.more'),
// the post counter
counter = activity.find('.badge');
// Create alerts elements (Display Success or Failure)
var alerts = {
requestEmpty : $('<div class="alert alert-info">No more data</div>'),
requestFailure : $('<div class="alert alert-error">Could not get the data. Try again!</div>')
}
var progressElement = $('<div class="progress" style="margin-bottom:0"><div class="bar"></div></div>');
var progressBar = progressElement.find('.bar');
var postHandler = function(posts){
// Set the progress bar to 100%
progressBar.css('width', '100%');
// Delay the normal more button to come back for a better effect
window.setTimeout(function(){more.html('More <span class="caret"></span>')}, 500);
// insert childrens at the end of the content element
for (post in posts){
// Clone the element
var $post = $(template).clone();
$post.attr('id', 'post-' + posts[post].ID);
var $img = $post.find('div.friend_image').find('img');
$img.attr('src', $img.attr('src').replace('fbid', posts[post].fbid));
$img.attr('alt', posts[post].first_name);
var $spantext = $post.find('div.friend_activity').find('span.activity_text');
$spantext.html($spantext.html().replace('artist_id', posts[post].artist_id));
//$post.find('.fbid').html(posts[post].fbid);
$post.find('.first_name').html(posts[post].first_name);
$post.find('.last_name').html(posts[post].last_name);
$post.find('.city').html(posts[post].city);
$post.find('.gender').html(posts[post].gender == 'male' ? 'he' : 'she');
//$post.find('.artist_id').html(posts[post].artist_id);
$post.find('.stage_name').html(posts[post].stage_name);
$post.find('.created_at').html(posts[post].created_at);
content.append($post);
}
content.animate({
scrollTop: $('#post-' + posts[0].ID).offset().top + (content.scrollTop()- content.offset().top)
}, 200);
}
// place the initial posts in the page
postHandler(initialPosts);
// add the click event to the more button
more.click(function(){
// Set the progress bar to 0%
progressBar.css('width', '0%');
// remove the more button innerHTML and insert the progress bar
more.empty().append(progressElement);
// AJAX REQUEST
$.ajax({
url: "http://crowdtest.dev:8888/fans/setup_widget",
type: 'GET',
// We do not want IE to cache the result
cache: false,
data: {
'start': start,
'desiredPosts': desiredPosts
}
}).success(function (data, text) {
// parse the response (typeof data == String)
data = JSON.parse(data);
if (data.length > 0){
// Update the total number of items
start += data.length;
// Update the counter
counter.html(start);
// load items on the page
postHandler(data);
}else{
$alert = alerts.requestEmpty;
// insert the empty message
activity.prepend($alert);
// Set the progress bar to 100%
progressBar.css('width', '100%');
// Remove the more button
window.setTimeout(function(){more.remove()}, 500);
// remove the empty message after 4 seconds
window.setTimeout(function(){$alert.remove()}, 4000);
}
}).error(function (request, status, error) {
$alert = alerts.requestFailure;
// insert the failure message
activity.prepend($alert);
// Set the progress bar to 100%
progressBar.css('width', '100%');
// Delay the normal more button to come back for a better effect
window.setTimeout(function(){more.html('More <span class="caret"></span>')}, 500);
});
});
console.log(desiredPosts);
console.log(start);
console.log(initialPosts);
});
</script>
使用div id“activity”在html中调用:
<div id="activity">
<table class="table table-striped">
<thead>
<tr>
<th><div class="friend_image"></div></th>
<th><div class="friend_activity"></div></th>
</tr>
</thead>
<tbody class="content">
</tbody>
</table>
<button class="more btn btn-block">
More <span class="caret"></span>
</button>
</div>
除了created_at部分之外,所有内容都正确输出。我收到错误:
SyntaxError: missing ) after argument list
引用该行:
$post.find('.created_at').html(posts[post].StringEdit::getDate(created_at));
你知道如何调用这个函数在jquery中编辑数据库中的created_at实体吗?谢谢你的帮助。
答案 0 :(得分:0)
为什么不在数据库的雄辩模型上使用Accessor,所以你根本不需要getDate()函数?
class User extends Eloquent {
public function getCreatedAt($value)
{
// created_at will now be formatted as "d-m-Y"
return date('d-m-Y', strtotime($value));
}
}
只需将date()函数格式更改为您需要的格式(即与getDate()函数格式相同)
答案 1 :(得分:0)
根据你的回复,关于传递给刀片模板的变量,你写了你提出的javascript代码 - “它在刀片文件本身。而post变量是通过ajax绑定的。”
我想解决方案很简单 - 你可以完成你的需要只有刀片和php,没有JS(在你的情况下是多余的)
1)将$ posts变量传递给视图(比返回它,显示或任何模板实现)
View::make('posts', $posts);
您的刀片模板中
1)将post变量提供给模板,就像你已经完成的那样
2)结构“模板”变量你在javascript中有一个刀片模板php代码
3)使用刀片用数据填充变量(而不是像现在这样用JS解析模板代码)
下面的一些示例(只是一个片段):
// app/views/posts.blade.php
{{-- this is a blade comment --}}
<div id="activity">
<table class="table table-striped">
<thead>
<tr>
<th><div class="friend_image"></div></th>
<th><div class="friend_activity"></div></th>
</tr>
</thead>
<tbody class="content">
{{-- in the below foreach loop you put the html you currently have in javascript template variable var template; --}}
@foreach ($posts as $post)
{{-- inside the foreach loop you have access to all your $posts, so while iterating you can do: --}}
{{-- 1) access $post fields --}}
{{ $post->id }}
{{ $post->fbid }}
{{ $post->whatever }}
{{-- 2) access $post fields and apply function on them --}}
{{ StringEdit::getDate($post->whatever) }}
@endforeach
</tbody>
</table>
<button class="more btn btn-block">
More <span class="caret"></span>
</button>
</div>
如果您按照建议执行操作,则不必错误地将Php发送到Javascript问题,这对您的问题来说似乎更简洁,更简单。当然,你会得到你所要求的 - 你将能够在模板中使用字符串辅助函数:)
编辑:
我更新了上述帖子,以便在评论中包含讨论信息
编辑2:
从评论中回答您的跟进请求:
使用自定义Eloquent模型访问器
假设您的模型中有一个字段(datacolumn)(该字段代表数据库中的表),该字段的名称为MyFancyField。现在,对于您的系统,您需要有可能获取预处理此字段的内容 - 您需要它是大写的。因此,您创建一个类似下面的自定义访问器并引用它(使用它),就像它是模型的另一个字段一样。
型号:/app/models/Book.php
class Book extends Eloquent {
protected $table = 'books';
public function toArray()
{
$array = parent::toArray();
foreach ($this->getMutatedAttributes() as $key)
{
if ( ! array_key_exists($key, $array)) {
$array[$key] = $this->{$key};
}
}
return $array;
}
public function getUpperMyFancyField()
{
return strtoupper($this->myFancyField);
}
}
控制器:/ app / controllers /
public function index(Book $book)
{
$this->book = $book;
echo "The original field fetched by a default accessor: " . $this->book->myFancyField;
echo "The uppercased field fetched by another custom accessor: " . $this->book->upperMyFancyField;
}
仅仅为了记录,toArray()是故意重载的,因为Laravel 4默认情况下不会将“自定义访问器字段”包含在返回的对象中作为数组。所以,如果你没有这个,并且想要$ this-&gt; book-&gt; toArray(),那么就不会在那里包含upperMyFancyField。