Rails strong params question

Question

Hi all,

Im having some troubles with a project I'm working on. Be warned i consider myself very much a beginner/novice at all this still :)

To keep things short and sweet, Im using rails & active admin to build up an admin interface where i can perform CRUD operations on my database models, which is all working great. However i recently decided i wanted to add another field to one of my models, a "description" field, so generated a migration, ran db:migrate and updated my list of allowed params in my controller.

My problem is i cannot actually save any data for this new "description" field - wether its via creating a new entry or updating an existing one. I suspect this has something to do with the data being filtered out by strong params (at least thats what seems to be the culprit from what googling/research I've done). However i am under the impression i have set up my strong params correctly, so I'm unsure what else might be causing this issue. Any help is greatly appreciated!!

Using rails 5.1.0 & will post code for my controller/model below.

class CellsController < InheritedResources::Base

  def index
  end

  private

    def cell_params
      params.require(:cell).permit(:name, :description)
    end

end

#app/models/cell.rb
class Cell < ApplicationRecord
    searchkick text_start: [:name], callbacks: :async, suggest: [:name]

    validates :name, presence: true, uniqueness: true

    has_many :cell_markers, dependent: :destroy
    has_many :markers, through: :cell_markers

    accepts_nested_attributes_for :cell_markers, :markers

    after_commit :reindex_Cell

    def reindex_Cell
        Cell.reindex
    end

    def search_data 
        {
            name: name,
            markers: markers.name,
            marker: cell_markers.map(&:marker_id)
        }
    end

end

#database schema for my cell model
  create_table "cells", force: :cascade do |t|
    t.string "name"
    t.datetime "created_at", null: false
    t.datetime "updated_at", null: false
    t.text "Description"
  end

... and finally this is part of active admin, so have permitted the param there too.

ActiveAdmin.register Cell do
# See permitted parameters documentation:
# https://github.com/activeadmin/activeadmin/blob/master/docs/2-resource-customization.md#setting-up-strong-parameters
#
 permit_params :name, :description
#
# or
#
# permit_params do
#   permitted = [:permitted, :attributes]
#   permitted << :other if params[:action] == 'create' && current_user.admin?
#   permitted
# end

end

Again, greatly appreciate any help as I'm sure I've overlooked something :)

Cheers

Answer 1 · 2018-06-17T11:39:11Z

June 17, 2018 11:39am

Found the answer, It was an issue with the naming of my "Description" column, as its not meant to have a capitalised "D".

So created a new migration that looked like this:

class Change < ActiveRecord::Migration[5.1]
  def change
    rename_column :cells, :Description, :description
  end
end

and left permit params methods in my controller and active admin resource unchanged.

Hope this can help anyone with similar issues. :)

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Jordan Barr

Jordan Barr

Rails strong params question

1 Answer

Jordan Barr

Jordan Barr