On Thursday, June 15, 2017 at 6:33:02 PM UTC-4, Walter Lee Davis wrote:
>
>
> > On Jun 15, 2017, at 6:12 PM, fugee ohu <fuge...@gmail.com <javascript:>>
> wrote:
> >
> >
> >
> > On Thursday, June 15, 2017 at 5:11:29 PM UTC-4, Walter Lee Davis wrote:
> > If you are doing this in a RJS template, then you will have the instance
> variables available to you, whatever you set at the controller that is
> rendering this. Just render the form using the @comment you created in the
> controller.
> >
> > I just posted an answer to a different question you raised, where I show
> you how to get the unique IDs on the DOM elements holding members of a
> collection. You can use that technique with RJS or with a single JS file
> that does not have any ERB replacement in it.
> >
> > Walter
> >
> > > On Jun 15, 2017, at 4:23 PM, fugee ohu <fuge...@gmail.com> wrote:
> > >
> > > This is my jquery
> > > $('.new_comment_button').after("<%= j render('form') %>");
> > > I need
> > > $('.new_comment_button') to be contructed from the values of variables
> because i can't give every post the same id I don't think using class
> instead of id in my view would make a difference How can i do this?
> > >
> > > --
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>
>
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> >
> >
> > Can I have the link And once I get the DOM id's how do i plug them into
> my js.erb file to change $('.new_comment_button') to let's say
> $('.new_comment_button2')
> >
>
> There are a number of different ways to solve this problem. The way I
> imagine your app, you want to be able to comment on an item, but without
> having a bunch of forms rendered in the page (one for each item in a
> collection). Right so far? So the static (non-RJS) way to do this with
> jQuery is to use the DOM and JS to send the correctly unique variable to
> your comments controller to let it know which item you are commenting on.
>
> # items_controller.rb
>
> def index
> @items = Item.all.page(params[:page])
> end
>
> # views/items/index.html.erb
> <ul id="items">
> <%= render @items %>
> </ul>
>
> # views/items/_item.html.erb
> <%= content_tag_for item, :li do %>
> <%= content_tag :hi, item.headline %>
> <%= simple_format item.description %>
> <%- end -%>
>
> # assets/javascripts/item_comments.js
> $(document).on('turbolinks:load', function(){
> $('#items li').each(function(){
> var elm = $(this);
> elm.append('<a href="/comments/new?item_id=' +
> elm.attr('id').split('_')[1] + '">Comment</a>');
> });
> });
>
> That gets you a link to a CommentsController, which in turn will need to
> decode the (bare) attribute item_id out of its querystring, and figure out
> which item you are commenting on.
>
> The #content_tag_for method, which you no doubt read the documentation
> for, will always create a unique id on the content tag it creates, using
> the instance variable you pass to it to figure out what that should be. For
> my contrived example, that will be 'item_123' or 'item_456' or similar.
> Model name, singular, lower-case, followed by an underscore, followed by
> the ID of the instance.
>
> It's trivial in JavaScript (using jQuery or not) to read that attribute,
> split it by the underscore character, and take the number off the end. So
> your JavaScript stays static, uses the DOM as a data source, and you don't
> have to write a different link for each of the items in your list.
>
> Walter
>
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>
>
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>
>
This is confusing In your example you're using items i'm using posts but
now I'm questioning why I'm using polymorphic association commentable in
the first place I forget To follow your example I have to yield to the
posts/index action and view within the users page in my case
localhost://page/:id it's like the users wall where the posts are shown I
dunno how to do that yet but is that what I should do, then I could match
the posts index to items index in your example Thanks in advance and thanks
for showing me this example
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