Tags down


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 :

Share : facebook icon twitter icon

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
class Category < ActiveRecord::Base
  has_many :reviews

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

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.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
Related Posts Related Posts :
  • SQL update records compared to records from another table
  • SQL - Mixing ANDs and ORs
  • Using list alias in WHERE or GROUP BY clause
  • Year to date per month
  • SQL natural join POSTGRES
  • how to insert an image into a database using WPF
  • how to create tables using sql schemas
  • Replacing cube with rollup in Oracle SQL
  • Using rank to select top 10 tuples in Oracle SQL
  • TSQL: query with optional join
  • Problem with UTL_FILE.FCOPY in a trigger
  • Revoking permission in oracle
  • Inserting one record at a time to multiple tables from a table
  • Deleting top rows only. SQL Server
  • SQL Server FTS: Ranking is a bit strange
  • In MySQL, how to copy the content of one table to another table within the same database?
  • spring batch insert using hibernateTemplate, JdbcTemplate
  • How to delete a record when two tables have foreign key referenced to each other?
  • SELECT with conditions for preferential source
  • SELECT question
  • echo out from the UNION sql?
  • Order database query results along a curve
  • Howto query for random rows?
  • What is the difference between C and Posix locales on Postgres?
  • Oracle syntax error
  • Concerned with replicate fn in sql
  • Semantics of the Boolean and comparison operators in the context of three-valued-logic
  • max(length(field)) in mysql
  • Create IBM DB2 CHECK for date greater or equal current date
  • SQL select multiple rows from foreign table for multiple columns
  • SQL : Error converting data type varchar to numeric
  • How to present features of aggregate functions (NULL)?
  • Update statement using IN clause issue
  • Is this SQL valid?
  • Find path between nodes with SQL
  • Dynamic column in SELECT statement postgres
  • SQL syntax question
  • select from one table and insert into another
  • 30 million records. Divy them up into 24 hourly-periods. Sum them for one month. Rinse and Repeat
  • What is the purpose of views in SQL?
  • Where are Cartesian Joins used in real life?
  • How can this SQL query code be broken/exploited by user input?
  • Android with SQL Server 2008
  • Case-Else for decimal values in SQL
  • how to get best search results AND , OR , LIKE
  • Update products table based on sku prefix
  • Using Views in SQL
  • sql order by name, numbers at the end
  • Selecting max/min value from more than one fields
  • ORA-01001: invalid cursor
  • Firebird 2.1 + EXISTS = query bug?
  • Inserting data into SQL database
  • SQL Server Query Performance - Clustered Index Seek
  • adding the value of a column into a LIKE statement?
  • How to use ORDER BY with proper handling of numbers?
  • Three phases of recovery : the analysis phase, the redo phase, and finally the undo phase
  • update query on multiple tables
  • How SQL calculates NEXT_RUN_DATE for a job schedule?
  • horizontal to vertical table transformation in SQL Server 2005
  • shadow
    Privacy Policy - Terms - Contact Us © bighow.org