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I'm a newbie to knockout and was wondering what the best approach using knockout with asp.net membership roles (mvc 4), I want to add a grid on the page and make it editable if the user is an administrator or just make it viewable if they are in a 'registered user' role? I don't want the user to be able to edit the page by changing the javascript using developer tools/firebug unless the only way to stop that is to check for role when post results back.
Thanks in advance, hope that makes sense.
You wouldn't use knockout for this. If a user is not an admin, they should not even be able to reach the page. Just use the [Authorize] attribute at the controller or the action level and specify what roles are allowed. Any JavaScript solution could easily be worked around given any industrious user access to user management despite their role.
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I am a beginner django developer. I am supposed to make an auction website. I have to update the template which shows the listing of the items and bids and I will have to update the template with latest bids each time a bidder makes one without having to refresh the page for each new update.
I have thought of querying the table each second and make ajax calls at the same intervals but I want to have real time updates without the extra overhead of polling and ajax calls each second, thus this question.
I am not looking for a specific piece of code to accomplish this, I just wanted to know whether there is any relevant package available to aid me in this, if not I'd request you to suggest me with a generic direction to accomplish this.
Django-channels is one of the best package to do what you are looking for , It is new way for connecting Django backend to Django frontend.
Take a look here for examples
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This, I'm assuming, is a very easy task for someone who knows JS.
I just want to have a clean UI for a form field where users can dynamically add as much information as they'd like.
An example:
Let's say I have a group (model). The group form is just a group name and members. The form allows you to add as many members as needed. On the form, there should be either 0 or 1 field shown. When the user clicks a button "ADD MEMBER," a row of fields should appear: :member_name, :member_name, :member_description, :member_role.
Upon saving, each member is populated into the database as a member of the group.
You should use accepts_nested_attributes_for, where the association between your two models Group and Member should be:
Group has many Members
Member belongs to Group
Checkout this episode by Ryan Bates:
http://railscasts.com/episodes/196-nested-model-form-part-1
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I am trying to create password protected room.
I can create public room and configure password from configuration tab. But initially I have to create room as unsecured and public.
I want to create room with password protected, so I don't need to go to config tab to set password.
Is that possible to create room with password using just one call or one stanza. Right now I can do that with two manual operations of creating and configuring the room.
If anyone can provide stanza, that would be great help. I would like to know if this is possible or not.
I went round and round on this too. Had to do 2 calls to make it work.
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I want to add two products to comparison queue like on this site (http://www.phonearena.com/phones/manufacturers/Samsung) Here if you hover on a mobile phone and click on 'compare+' it add to a java-script or browser session and if you open another page and click on next any mobile 'compare+' button, it adds up to the comparison queue, which you can later use to compare two mobiles.
I want to know what should I do, to achieve this functionality. My web app is being developed in MVC3 and I want to compare two of my products this way.
Please I just need some help how to figure this out.
Thanks
Here is how you would use cookies:
document.cookie = "mobile1=" + mobile1;
and then you can retrieve it like so:
mobile1 = document.cookie
Give
http://plugins.jquery.com/cookie/
a try. Something like:
if ($.cookie("choices"))
{
// have previous choice, so handle comparison display and reset state
// ...
$.removeCookie("choices");
}
else
{
$.cookie("choices", "key of first product");
}
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I'm looking for a small and lightweight way to get the screenshot of a website with just the URL. I've heard you can do this with XML/PHP, or even use another service to return the image. However, is there a fast simple way to do this? Preferably in Js? Also, to clarify, my project is going to be dynamically generating these thumbnails.
You can't do this with html/php alone. You need a browser to interpret the content on the page and get a screenshot. Some sort of software. OR use a 3party service
http://www.browserstack.com/screenshots/api looks good, I haven't tried them though