I ran into a similar problem when trying to use the JQuery generator for Rails 3 I solved it like this: Get the CURL Certificate Authority (CA) bundle. You can do this with: sudo port install curl-ca-bundle [if you are using MacPorts] or just pull it down directly wget http://curl.haxx.se/ca/cacert.pem Execute the ruby code that … Read more
Considering Rails 3: html_safe actually “sets the string” as HTML Safe (it’s a little more complicated than that, but it’s basically it). This way, you can return HTML Safe strings from helpers or models at will. h can only be used from within a controller or view, since it’s from a helper. It will force … Read more
In your form are you passing in any other attributes, via mass assignment that don’t belong to your user model, or any of the nested models? If so, I believe the ActiveRecord::UnknownAttributeError is triggered in this instance. Otherwise, I think you can just create your own controller, by generating something like this: # app/controllers/registrations_controller.rb class … Read more
The other answerers are all correct, but a friend asked me to explain this to him and what it really boils down to is how Ruby handles variables, so I thought I would share some simple pictures / explanations I wrote for him (apologies for the length and probably some oversimplification): Q1: What happens when … Read more
<% %> Executes the ruby code within the brackets. <%= %> Prints something into erb file. <%== %> Equivalent to <%= raw %>. Prints something verbatim (i.e. w/o escaping) into erb file. (Taken from Ruby on Rails Guides.) <% -%> Avoids line break after expression. <%# %> Comments out code within brackets; not sent to … Read more
Postgres has two different timestamp data types: timestamp with time zone, short name: timestamptz timestamp without time zone, short name: timestamp timestamptz is the preferred type in the date/time family, literally. It has typispreferred set in pg_type, which can be relevant: Generating time series between two dates in PostgreSQL Internal storage and epoch Internally, timestamps … Read more
At first you need to create new app rails new my_app then switch folder to /my_app and then you can do rails s you have to read your logs
What you need is hash and not string. You can use it like this, hash = {id: 2} User.where(hash) And if you really want to use string you can do it like this, string = “id = 2” User.where(string) If you want to execute the string you can use eval. In that case it will … Read more
It is not really well formated question … You should be more precise about what you want, what you are using, etc. Assuming you are using Rails 3, ERB for HTML generation: # in your controller: file_as_array = IO.readlines(‘filename.txt’) random_line = rand(file_as_array.size) @my_random_string = file_as_array[random_line] # in your view: <%= @my_random_string %>
You can do something like this : if ..something.. @posts = Post.where(..something..) else @posts = Post.where(..something..) end @posts = @posts.all(:order => ..something..) It’s better to do this, in Rails 3 : @posts = @posts.order(..something..)