I am getting this error When I put the condition in rails query.
def index
#patients = current_hospitaladmin.patients.all(:conditions => "discharge_status = 0")
respond_with(#patients)
end
You can simple try this
def index
#patients = current_hospitaladmin.patients.where(discharge_status: 0)
respond_with(#patients)
end
Related
I'm learning how to use ransack, so I have a problem there I'm not sure if it is because the ransack or if it is because the array.
I have a form with 2 text fields (:search and :discipline). So I'm trying do a search using the 1º field parameter AND the 2º field parameter.
The idea is search for all elements that comes from the 1º parameter (field :search, and then remove all the elements that are different from the 2º parameter (field :discipline).
class PagesController < ApplicationController
def home
#rooms = Room.limit(6)
end
def search
if params[:search].present? && params[:search].strip != ""
session[:loc_search] = params[:search]
end
if params[:discipline].present? && params[:discipline].strip != ""
session[:loc_discipline] = params[:discipline]
end
arrResult = Array.new
if session[:loc_search] && session[:loc_search] != ""
#rooms_address = Room.where(active: true).near(session[:loc_search], 5, order: 'distance')
else
#rooms_address = Room.where(active: true).all
end
#search = #rooms_address.ransack(params[:q])
#rooms = #search.result
#arrRooms = #rooms.to_a
if (session[:loc_discipline] && !session[:loc_discipline].empty?)
#rooms.each do |room|
not_available = Room.where(
"(room_type != ?)",
session[:loc_discipline]
)
if not_available.length > 0
#arrRooms.delete(room)
end
end
end
end
end
My #arrRooms is returning NULL after I try do this #arrRooms.delete(room).
I dont know if have a better way to do this, but I'm trying do it like a tutorial that I found.
I assume that you're trying to show all rooms that are not available?
I think the best strategy is to load what you really want, and not loading everything an then deleting the things you don't need. Your code is really hard to read, I suggest you take a little tutorial like this: http://tryruby.org/levels/1/challenges/0, or this: https://www.codeschool.com/courses/ruby-bits
Try extracting code like where(active: true) into a scope like:
class Room < ActiveRecord::Base
scope :active, -> { where(active: true) }
scope :available, -> (discipline) { where.not(room_type: discipline) }
end
In your controller you can then make this:
def index
#rooms = Room.active.available(params[:discipline])
search_param = params[:search].present?
if search_param.present?
#rooms = #rooms.near(session[:loc_search], 5, order: 'distance')
end
#rooms = #rooms.ransack(params[:q]).result(distinct: true)
end
This is what I could guess out of your code.
Hi in the following code although the where query inside create method i.e. variable #count_of_fav_texts_present fetches 1 record in the rails console, but in controller the value of #count_of_fav_texts_present is zero and going inside the first if clause.
Also in the internal if clause the query for find_by i.e variable var_fav_text is giving NilClass. Although when I check it in console the value is not Nil, and it has one record.
I am very new to Rails and I am not sure what mistake I am making. Please help.
class NewfavoriteTextsController < ApplicationController
before_action :set_text
before_action :set_favgroup
before_action :authenticate_user!
def create
#count_of_fav_texts_present = Favorite.where(favorited_id: #text_id, user_id: current_user.id).count
if #count_of_fav_texts_present == 0
if Favorite.create(favorited: #text, user: current_user)
if Newfavorite.create(favorite_group_id: #fav_group, newfavorited: #text)
var_fav_text = Favorite.find_by(favorited_id: #text_id, user_id: current_user.id)
cnt_of_var = var_fav_text.counter
var_fav_text.counter = cnt_of_var + 1
var_fav_text.save
else
# do something
end
else
# do something
end
else
# for condition when var is greater than 0
if Newfavorite.create(favorite_group_id: #fav_group, newfavorited: #text)
var_fav_text = Favorite.find_by(favorited_id: #text_id, user_id: current_user.id)
cnt_of_var = var_fav_text.counter
var_fav_text.counter = cnt_of_var + 1
var_fav_text.save
else
# do something
end
end
end
def destroy
# do something
end
private
def set_text
#text = Text.find(params[:text_id] || params[:id])
end
def set_favgroup
#fav_group = params[:fav_group_id]
end
end
Thanks in advance.
I have the following index in workorder controller:
def index
#workorders = Workorder.scoped
#workorders = Workorder.where("created_at > #{params[:after]}") if params[:after].present?
end
How would I add the following so that it becomes an AND. I want it to only include a workorder if maxsync <> 'E'. Even if the parameter :after is present or not.
I tried this:
#workorders = Workorder.scoped.where("maxsynch != 'E' ")
Thanks for the help!
You can chain scopes like this:
def index
#workorders = Workorder.scoped.where("maxsynch != 'E' ")
#workorders = #workorders.where("created_at > ?", params[:after]) if params[:after].present?
#examples:
#workorders = #workorders.where(parent_id: params[:parent_id]) if params[:parent_id].present?
#workorders = #workorders.active if params[:filter_active].present?
end
I have a simple query that Rails seems to be interpreting as a fixnum, but I'm not sure why. My code looks like this:
#user_with_points = Point.select("sum(points) as points, user_id").order("points desc").group("user_id")
#user_with_points.each_with_index do |user_with_point, index|
When I add puts #user_with_points, it shows:
#<Point:0x6360138>
#<Point:0x6322f38>
However, I'm receiving this error this error:
NoMethodError: undefined method 'each' for 75:Fixnum
adding Entire Code
def self.update_overall_rank_and_points
#user_with_points = Point.select("sum(points) as points, user_id").order("points desc").group("user_id")
rank = 0
points = 0
#user_with_points.each_with_index do |user_with_point, index|
#user = User.find(user_with_point.user_id)
if user_with_point.points != points
points = user_with_point.points
rank += 1
end
#user.rank = rank
#user.points = user_with_point.points
#user.save
end
end
Your query is returning a scalar value which the sum of points as an integer. The total of your query happens to be 75, hence the error. Therefore you can't do an each against it since it's not an enumeration.
Try:
#user_with_points = Point.sum(:points, :group => :user_id, :order => 'sum(points)')
#user_with_points.each do |user_id, points|
#...
user = User.find(user_id)
if user.points != points
puts "not equal!"
end
end
I am working on an events application where i want to filter events depending on the 3 parameters location or starts_at or ends_at in the query string. There can be any one, two or all the parameters in the query string. In i use if-else statement i need to make 6 cases which will make my code clumsy. Rather i am thinking to implement something this way:
class EventsController < ApplicationController
def index
unless params.empty?
unless params[:location].nil?
#events = Event.where("location = ?", params[:location])
end
unless params[:starts_at].nil?
unless #events.empty?
#events = #events.where("start_date = ?", params[:start_date])
else
#events = Event.where("Date(starts_at) = Date(?)", params[:starts_at])
end
end
unless params[:ends_at].nil?
unless #events.empty?
#events = #events.where("end_date = ?", params[:end_date])
else
#events = Event.where("Date(ends_at) = Date(?)", params[:ends_at])
end
end
end
end
end
But this code doesnt work since where query doen not work on an array. Can someone suggest me some solution for this..
You should be able to pass your params hash directly to where, and it will form the correct SQL based on the keys and values of that hash:
Event.where(params)
An example in the console:
1.9.3p194 :001 > puts Example.where(:location => 'here', :started_at => '2012-08-13').to_sql
SELECT "examples".* FROM "examples" WHERE "examples"."location" = 'here' AND "examples"."started_at" = '2012-08-13'
Try Following
def index
unless params.empty?
where_array, arr = [], []
if params[:location]
where_array << "location = ?"
arr << params[:location]
end
if params[:starts_at]
where_array << "start_date = ?"
arr << params[:starts_at]
end
if params[:ends_at]
where_array << "end_date = ?"
arr << params[:ends_at]
end
#events = arr.blank? ? [] : Event.where([where_array.join(" AND "), *arr])
end
end