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Ruby-on-Rails: How to pull out most recent entries from a limited subset of a database table


By : user3851736
Date : October 15 2020, 11:12 PM
To fix this issue Imagine something like a model User who has many Friends, each of who has many Comments, where I'm trying to display to the user the latest 100 comments by his friends. , Given the following relationships:
code :


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Ruby on Rails 3 Limited Multi-table query and Array Typecasting


By : John McLaughlin
Date : March 29 2020, 07:55 AM
Hope that helps What is happening is that review contains a Review object and you are trying to concatenate it to an array, but array concatenation only works between arrays.
i.e. [1,2,3]+[4] gives [1,2,3,4], but [1,2,3]+4 gives an error.
code :
@reviews << review
@reviews.push review
@reviews += [review]
Category.where(:category_name => "Something").first.reviews.limit(5)
class Review < ActiveRecord::Base
  ...
  belongs_to :category
  ...
end
class Category < ActiveRecord::Base
  ...
  has_many :reviews
  ...
end

How to properly add default entries to database in Ruby on Rails?


By : RVCL
Date : March 29 2020, 07:55 AM
will help you
Disabling it leaves a huge security hole, so it's not an option`

Should limited options be stored in a global array vs database in Ruby on Rails?


By : N. Harris
Date : March 29 2020, 07:55 AM
I wish did fix the issue. For permanence you have to keep the data on disk somewhere.
You can use YAML data files, which make it easy for you to modify without opening some database front-end or writing admin pages. YAML files are also easily read from other programming languages, so you aren't limited to Ruby reading the same resources.

sum up amount of entries in a table in Ruby on Rails


By : Carlos
Date : March 29 2020, 07:55 AM
I wish this help you If I understood correctly, what you need is the amount of entries by :agent_id, this should work:
code :
Order.group(:agent_id).count
Order.where(agent_id: @current_user).count

Display 10 most recent database entries in a HTML table


By : Pieno
Date : March 29 2020, 07:55 AM
hope this fix your issue I'm working on a PHP application, where I need to display the 10 most recent MySQL database entries in a HTML table. , try this
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