Tagged Questions
0
votes
2answers
113 views
passing a paperclip image from the controller to a view in rails
I have a model that has an image attached to it that I want to be passed through a controller into a view. This is the way I have tried myself but it does not work:
Model:
class CustomForm < ...
2
votes
4answers
1k views
Instance Variables in Rails Model
I want to initialize an instance variable within my Rails model that will hold an array and I want to access this variable in other methods within my model. I tried this:
class Participant < ...
0
votes
1answer
56 views
Ruby / Rails: Assigning values to an instance variable
What is the easiest way to assign attribute values to the (model) instance variable, when these attribute values are located in a big hash (session[:some_big_hash]) that contains the usual model ...
0
votes
1answer
39 views
Passing instance variables into API in rails
I'm trying to pass in some instance variables to call an API with that specific object's attributes. A user fills in their car details (make, model, and year) which creates an offer object. That is ...
-1
votes
3answers
67 views
How do i append some value to an instance variable in ruby on rails?
Here's what I am trying to do in my home controller:
def view
@product= Product.find(params[:id])
rand_price = rand(202- @product.price.to_i) + @product.price.to_i
old_price = rand_price ...
0
votes
1answer
66 views
Link_to and Ajax request Rails
Hopefully I can explain this so people can understand what i am trying to achieve. Currently I have multiple posts being created and they are shown at this url for public view
/tynewyddnews
as ...
1
vote
3answers
288 views
Ruby and Rails: Metaprogramming variables to become class methods
I'm creating a model called Configuration and I have the following code and I want to make it more dynamic by using metaprogramming.
In a table on the database for Configuration model I have the ...
0
votes
2answers
56 views
ruby on rails instance variable and if elsif
In my Show View I have:
<div class="reviews" >
<% @reviews.each do |review| %>
<%= review_block review %>
<% end %>
</div>
In my Controller I have:
def ...
0
votes
1answer
64 views
@controller instance variable in Rspec
Just curious. How is the @controller instance variable inside the controller specs being instantiated? And where?
0
votes
2answers
23 views
Declarative Auth blocking instance variables
I'm using declarative authorization in my rails app, and I have the following controller:
class OrganizationsController < ApplicationController
filter_resource_access attribute_check: true
...
1
vote
1answer
358 views
undefined method `each' for nil:NilClass?
I want to dynamically create checkboxes with the users in the database, which shall be possible to choose (one or many). However, I am apparently doing something wrong because the code below gives me ...
0
votes
4answers
161 views
Instance variable not being recognized by its view
Can anyone think of a reason why an instance variable declared in the controller would not be recognized by its view?
Controller looks something like this:
class UsersController < ...
-1
votes
1answer
50 views
Ruby deduct from instance variable same values from other
I have two instance values: @a, and @b, there are hash-like....
(will explain on pseudo examples)
For example in @a i have:
*Field1 | Field2 | Field3*
CONTITECH | CT942K1 | 123
CONTITECH | CT722K1 | ...
1
vote
2answers
134 views
Hidden instance variables in before_filter method
Is it a good practice to hide instance variable initialization in private methods?
For example, I have a user controller with some actions:
class UsersController < ApplicationController
...
0
votes
4answers
49 views
Why does my view code use both an instance variable and a local variable?
I am looking at a book example. In the view section for a Products model, I see some code like this:
<table>
<% @products.each do |product| %>
<tr class="<%= cycle ...
