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How to select objects based on their enum value and then sum another field belonging to the object collection in Rails


How to select objects based on their enum value and then sum another field belonging to the object collection in Rails

By : user2952218
Date : November 19 2020, 12:41 AM
wish of those help So, I'm using Rails 4, and I have an enum column on my "Sales_Opportunity" object called pipeline_status - this enables me to move it through a sales pipeline (e.g. New Lead, Qualified Lead, Closed deal etc). This all works fine. I'm able to find the number of sales_opportunities that a company has by status through using the following: , use aggregate function sum
code :
<%= @company.sales_opportunities.where(pipeline_status: 4).sum(:sale_value) %>
<%= @company.sales_opportunities.where(pipeline_status: 4).pluck(:sale_value).reduce(0, :+) %>


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Grails select domain objects based on an enum value in an enum list property

Grails select domain objects based on an enum value in an enum list property


By : SuperPimp
Date : March 29 2020, 07:55 AM
wish help you to fix your issue This one's tricky and not supported by the dynamic finders. I also don't know how to do this with Criteria queries, but the HQL would be
code :
def mackTrucks = Truck.executeQuery(
   'select t from Truck t left join t.makes make where make=:make',
   [make: Make.MACK])
Rails 4.0 - How to get collection of objects based on an ID of a child object?

Rails 4.0 - How to get collection of objects based on an ID of a child object?


By : linkin lu
Date : March 29 2020, 07:55 AM
fixed the issue. Will look into that further UPDATED for future google users
This I found is the correct way to achieve this goal
Rails Dynamically Changing Collection Select In Form Based on form field

Rails Dynamically Changing Collection Select In Form Based on form field


By : osanda
Date : March 29 2020, 07:55 AM
will help you Based off of the Railscasts dynamic select menus I've come up with the following:
calls.js.coffee
code :
jQuery ->
  facilities = $('#call_transfer_from_id').html()

  $('#call_region_id').change ->
    region = $('#call_region_id :selected').text()
    options = $(facilities).filter("optgroup[label=#{region}]").html()

    if options
      $('#call_transfer_from_id').html(options)   
    else
      $('#call_transfer_from_id').empty()
<%= f.grouped_collection_select :transfer_from_id, Region.order(:area), :facilities, :area, :id, :facility_name, {include_blank: true}, class: 'select' %>
Rails collection select with Enum values

Rails collection select with Enum values


By : user3348795
Date : March 29 2020, 07:55 AM
hope this fix your issue Change Log.stream_types.keys.to_a.map { |w| [w.humanize, w] } to Log.stream_types.map { |k, v| [k.humanize, v] }. The second argument of select is an array of option arrays. The first and second elements of an option array are the text and the value of an option element respectively.
Rails: Get related records having belonging to category having a particular enum attribute

Rails: Get related records having belonging to category having a particular enum attribute


By : dineshkaji
Date : March 29 2020, 07:55 AM
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