I'm working on a news publishing site that needs to load in stories from an RSS feed below the current news page. I've been using InfiniteAjaxScroll (http://infiniteajaxscroll.com/) to some success however, I've hit a brick wall. There is not way for me to dynamically change what story should load in next as you scroll down the page.
Does anyone know of any other plugins, tutorials, examples that replicate behavior like this. I've searched but come up with nothing that meets these requirements.
I'm trying to create something similar to what the Daily Beast has implemented on their site.
http://www.thedailybeast.com/articles/2014/11/05/inside-the-democrats-godawful-midterm-election-wipeout.html
How do they know what stories to load in?
Thanks!
If you're using the InfiniteAjaxScroll library, the "next story" is whatever link you define as the next URL which can be dynamic for each story you load.
Imagine your first story's HTML as something like this
<div class="stories">
<div class="story">
...
</div>
</div>
<div id="pagination">
next
</div>
Then in the storyC.html you have
...
<div id="pagination">
next
</div>
Assuming you're using some sort of dynamic backend, you would use some sort logic to grab a related story and just set that URL as the "next" URL.
I'm new to Grails and got some problem with the g:formRemote command..
I want a g:textArea box send a message to my controller and save this messages.
After that the page should be updated via the formRemote Ajax, so that the messages appear on the page.
But instead of updating the page, the formRemote call assumes the given url to be a real link and wants me to redirect to this (non-existing) .jsp site.
The Method I want to start is called in my controller tho
I tried many solutions offered in similar problems, but it seems this problem is different from theirs
Heres the code:
<div id="history">
<g:render template="posts" collection="${ messages }" var="message" />
</div>
<div class="postMessageForm">
<g:formRemote name="postChatMessage" url="[controller: 'meetingRoom',
action: 'postMessage']" update="history">
<div class="msg_box">
<g:textArea name="message" value="" style="width: 630px"/><br/>
</div>
<div style="float: right;">
<g:submitButton name="Send" style="width: 90px; height: 40px;"/>
</div>
</g:formRemote>
</div>
and this is the Action which is called in my MeetingRoomController:
def postMessage() {
if (params.message != "") {
def thisUser = lookUpUser()
def thisRoom = thisUser.joinedRoom
def chatPost = new ChatPost(
message: params.message,
author: thisUser
)
thisRoom.addToChatHistory(chatPost)
}
// def messages = currentChatHistory()
// render template: 'posts', collection: messages, var: 'message'
I saw this kind of approach in Jeff Browns Twitter tutorial.
Possible failures i am seeing:
the out-commented render template command has something to do with the Ajax (When I do not comment it the only thing that happens is that the template posts will be rendered on the redirected page
usage of both Ajax and jQuery (But i dont believe that can be the point because I just have used g: and groovy stuff and havent even imported a jQuery lib)
this could be easier with remoteFunction (I dont really know how to get the remoteFunction work in this case tho)
I hope this information is enough to let someone see what I am missing
When the submit button is clicked on your form, the data is sent to the method listed in the url parameter of the formRemote tag. Then you are inside that method, you get to the commented out render tag that outputs data back to the gsp page in the div mentioned in the update tag of the formRemote tag.
formRemote relies upon a javascript library to handle the ajax stuff as mentioned in the grails documentation:
7.7.1 Ajax Support
By default Grails ships with the jQuery library, but through the
Plugin system provides support for other frameworks such as Prototype,
Dojo:http://dojotoolkit.org/, Yahoo UI:http://developer.yahoo.com/yui/
and the Google Web Toolkit. This section covers Grails' support for
Ajax in general. To get started, add this line to the tag of
your page:
You can replace jQuery with any
other library supplied by a plugin you have installed. This works
because of Grails' support for adaptive tag libraries. Thanks to
Grails' plugin system there is support for a number of different Ajax
libraries including (but not limited to):
jQuery Prototype Dojo YUI MooTools
So remove what is in the history div, uncomment the two lines in your postMessage method, and include one of the referenced javascript libraries.
I'm having a problem getting the back button function to work in Rhomobile.
I've tried various methods of url_for(:index, :back => ....) etc etc and nothing seems to work. The problem with this method is (even if it worked) that it only allows navigation to a set place, rather than a dynamic history/back navigation.
The closest I've come to a working solution is by using this in the application_helper:
def page_back
WebView.navigate_back
end
and then Back in the view.
This works, and i can navigate across views and even controllers. However, it generates a "Error loading page" error, even though it does actually render the right page...
Does anybody have any ideas?
Ok this is what I did in the end. I've decided against using rhodes now but here is what I came up with for this problem:
Added data-add-back-btn="true" to:
<div data-role="page" data-add-back-btn="true">
Then:
<div data-role="header" data-position="inline">
<h1>Title</h1>
Back
</div>
I want to load a webpage in several parts, maybe using jquery ajax or just simple javascript ajax functions so the user can start interacting with the webpage withouth having to wait for the whole page to load. Just like gmail does.
How can I achieve such a thing?
Generally you need to dedicate some div containers for inserting dynamically loaded contents.
<div id="header"></div>
<div id="content"></div>
<div id="sidebar"></div>
<div id="footer"></div>
Then you can load other pages on startup.
$(function(){
$('#content').load('content.php');
$('#content').load('sidebar.php');
});
Of course this is only a start. You have to check for errors on loading and retry. Also using hash value you can dynamically load content & sidebar. etc..
I am having a strange issue in Firefox 3.5.2 with F5 refresh.
Basically, when I focus on an input field and hit f5 the contents of that input field gets copied to the next form field after the F5 refresh.
But, if you inspect the HTML source code, the values are correctly loaded.
I am not having this issue in IE8 or Safari 4.0.3.
The problem does not occur if I do a hard refresh or run window.location.refresh(true).
After F5 Refresh: http://i805.photobucket.com/albums/yy339/abepark/after.jpg
Here's an overview of what's going on.
I believe the thing you should look into is the autocomplete attribute,
you should set it to off on the input box. However be careful since this will trigger two effects.
When you refresh the page it won't remember the old values
The default dropdown of the already used values on that input box will also be disabled.
If you want to keep the second behavior you should set the autocomplete attribute back to on with JS.
Browsers can remember form field contents over a refresh. This can really throw your scripting off if it is relying on the initial value of a field matching what's in the HTML. You could try to prevent it by calling form.reset() at the start.
Different browsers have different strategies for detecting when a form or a field is the same as in the previous page. If you have clashing names, or names that change on reload, it is very possible to end up confusing them. Would have to see some code to work it out for sure.
In the backend, I am using ASP.NET MVC 1.0 with the Spark View engine. When I examine the source code after an F5 refresh in Firefox 3.5.2, the page renders correctly; however, if you look at the page visually the adjacent form field field gets populated with the value from the previous field.
I included enough code so you can just get an idea of what I'm trying to do.
Again, the rendering is fine and the final view/HTML code is fine. It's what I see on the screen that is incorrect. I am using hidden vars; but the issue occurred before using it as well.
Note in the code below, I have 2 distinct ID fields: "date_{projectTask.ProjectTaskId}" and "finishDate_{projectTask.ProjectTaskId}, which gets renders to something like "date_1" and "finishDate_2".
<table>
<for each="ProjectTask projectTask in projectTasksByProjectPhase">
<input type="hidden" value="${projectTask.ProjectTaskId}" />
<tr>
<td class="date">
<div class="box">
<div class="datefield">
<input type="text" id="date_${projectTask.ProjectTaskId}" value="${startDate}" /><button type="button" id="show_${projectTask.ProjectTaskId}" title="Show Calendar"><img src="~/Content/yui/assets/calbtn.gif" width="18" height="18" alt="Calendar" ></button>
</div>
</div>
</td>
<td>
<div class="box">
<div class="datefield">
<input type="text" id="finishDate_${projectTask.ProjectTaskId}" value="${finishDate}" /><button type="button" id="finishShow_${projectTask.ProjectTaskId}" title="Show Calendar"><img src="~/Content/yui/assets/calbtn.gif" width="18" height="18" alt="Calendar" ></button>
</div>
</div>
</td>
</tr>
</for>
</table>
FYI: ${} are used to output variables in the Spark View engine.
I am also using the YUI 2.7 Connection to make Ajax calls to update the datebase for "change" and "enter/tab key press" events. I am able to verify that the AJAX calls are made correctly and the form field values are still valid.
The problem occurs when I just do a F5 refresh; for some reason, the "finishDate_1" gets populated with the value from "date_1".
This problem occurs just by clicking on "date_1" and hitting F5; so, the adjacent field just gets populated even if there are no AJAX calls.
Here's the Javascript code I call towards the end of the body"
YAHOO.util.Event.onDOMReady(
function() {
var idList = YAHOO.util.Dom.getElementsBy(function (el) { return (el.type == 'hidden'); }, 'input');
len = idList.length;
var startDatePickers = new Array();
var finishDatePickers = new Array();
for (var i = 0; i < len; i++) {
var id = idList[i].value
startDatePickers[i] = new DatePicker("date_" + id, "show_" + id, "cal_" + id);
startDatePickers[i].valueChanged.subscribe(updateDate, 'S');
finishDatePickers[i] = new DatePicker("finishDate_" + id, "finishShow_" + id, "finishCal_" + id);
finishDatePickers[i].valueChanged.subscribe(updateDate, 'F');
}
}
}
The form field gets copied over before any Javascript code is processed because I call the Javascript code towards the end of the body after all HTML is rendered. So, I'm guessing it's a refresh issue in Firefox? What do you guys think?
As you can see above, I created my own calender date picker objects which allows you to either enter the date in the text manually or by clicking on a button to view the calendar and select a date. Once you enter or select the date, an AJAX call will be made to update the datebase in the back end.
Thanks everybody for the quick responses.
#Anonymous: whoever you are, you are awesome!
#bobince: thanks for the feedback as well.
I added a dummy form tag with the attribute autocomplete="off" and that solved the problem!
I was scratching my head because I didn't get this issue in Safari 4.0.3 or Internet Explorer 8.
<form action="" autcomplete="off">
<!-- my code -->
</form>
The values were loading correctly in the back end (ASP.NET MVC 1.0/Spark View engine) and the HTML source code reflected this, but the input field values were not getting populated correctly. I was using the YUI Connection Manager and Javascript to support edit-in-place and the date pickers.
I tried changing the XHR call to a GET call instead of POST and the same issue was happening.
Anyway, the problem was that the Firefox was not setting the correct values for the input fields for F5 refreshes.
Again, thanks so much! You guys rock!
All element id's must be unique, if two elements have same id's then that could be reason why Firefox inserts same values to elments that didn't orginally have those values entered.
I had a similar problem related to my question at Input control shows incorrect value, even 'though inspect element shows the right value is there
The problem occurred for me in Firefox, but not Chrome, for some but not all controls on the form, and when I pressed F5, but not ctrl-F5.
The "dummy form" seems to have resolved it for me.