Use Javascript in Rails to add input fields [closed] - javascript

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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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Connect 4 Javascript Game - Push to lowest circle in column [closed]

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Ive got this Connect4 game : http://codepen.io/anon/pen/lmFJf
What I'd like to do is when I click on any free space/circle in a column, it adds it to the lowest circle/point in the column (just like standard Connect 4 / 4-in-a-row) however I'm having trouble doing this.
I'm not sure if my current setup will allow me to easily do this though...
Thoughts?
Your click events are tied to the cells. Shouldn't they be tied to the columns instead? Since you can't actually place a piece in a cell that would have an empty space below it.
I think this will greatly simplify your setup.
Each column keeps a record of which pieces it has, like: RYREEE (red yellow empty).
Also, keep your model in JavaScript. Don't read from the DOM. The DOM should be a view only.

Knockout Editing with asp.net roles [closed]

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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.

select field works without button but it dont change in select field [closed]

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I want to change content information of my website by selecting from select field. If I select any item my information be changed but in select field remain the same item all the time. please help me to keep selected item along with changing information.
Seems pretty straight forward to me.
Check out this fiddle. Hope this helps
Try logging the selectedIndex of the select option in your case.

Create password protected room using converse.js plugin [closed]

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Closed 9 years ago.
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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.

Avoid page refresh and add values to javascript session? [closed]

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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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