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Jenny Blunt

2011-Jul-28 16:05 UTC

Actionmailer Help Needed

Hello everyone,

Nice to meet you all, am new to the forum.

I''m stuck with rake / actionmailer trying to display a set of found
records.

We have a simple actionmailer rake task that is supposed to send a daily
email digest of tasks that are due for a specific user. So far, it''s
working but the email only displays the first message.

In my task model

scope :tasksdue, lambda {
       where("dueddate > ? AND status = ?", Date.today, false)
  }

 def self.send_reminders
      Task.tasksdue.find_each do |task|
      TaskMailer.deliver_task_due task
 end
task_mailer.rb

class TaskMailer < ActionMailer::Base
  def task_due(task)
      recipients @task.user.email
      from       "email-hcDgGtZH8xNBDgjK7y7TUQ@public.gmane.org"
      subject    "Your report entitled"
      sent_on    Time.now
      content_type "text/html"
      body       :task => task
  end
end

In my rake tasks file I have

namespace :cron do
  desc "Send email reminders to all users"
  task :send_reminders => :environment do
    Task.send_reminders
  end
end

And in my view, task_due.html.erb, I''ve tried this.

<!DOCTYPE html>
<html>
  <head>
    <meta content="text/html; charset=UTF-8"
http-equiv="Content-Type"
/>
  </head>
  <body>
    <h1>Ahoy! <%= @task.responsible %></h1>
    <% Task.send_reminders.each do |report| %>
      <%= Task.send_reminders.title %>
    <% end %>
  </body>

This results in a loop, stack level too deep. I think I understand why.
Can you help me understand how I display all my records from the found
set?

All the best

Jenny Bx

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Kendall Gifford

2011-Jul-28 22:33 UTC

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Re: Actionmailer Help Needed

On Thursday, July 28, 2011 10:05:01 AM UTC-6, Ruby-Forum.com User
wrote:>
> Hello everyone,
>
> Nice to meet you all, am new to the forum.
>
> I''m stuck with rake / actionmailer trying to display a set of
found
> records.
>
> We have a simple actionmailer rake task that is supposed to send a daily
> email digest of tasks that are due for a specific user. So far,
it''s
> working but the email only displays the first message.
>
> In my task model
>
> scope :tasksdue, lambda {
>        where("dueddate > ? AND status = ?", Date.today, false)
>   }
>
>  def self.send_reminders
>       Task.tasksdue.find_each do |task|
>       TaskMailer.deliver_task_due task
>  end
> task_mailer.rb
>
> class TaskMailer < ActionMailer::Base
>   def task_due(task)
>       recipients @task.user.email
>       from       "em...-hcDgGtZH8xNBDgjK7y7TUQ@public.gmane.org"
>       subject    "Your report entitled"
>       sent_on    Time.now
>       content_type "text/html"
>       body       :task => task
>   end
> end
>
> In my rake tasks file I have
>
> namespace :cron do
>   desc "Send email reminders to all users"
>   task :send_reminders => :environment do
>     Task.send_reminders
>   end
> end
>
> And in my view, task_due.html.erb, I''ve tried this.
>
> <!DOCTYPE html>
> <html>
>   <head>
>     <meta content="text/html; charset=UTF-8"
http-equiv="Content-Type"
> />
>   </head>
>   <body>
>     <h1>Ahoy! <%= @task.responsible %></h1>
>     <% Task.send_reminders.each do |report| %>
>       <%= Task.send_reminders.title %>
>     <% end %>
>
Yeah, so why are you calling "Task.send_reminders" in your template? I
don''t
think this is what you want.
 
>   </body>
>
> This results in a loop, stack level too deep. I think I understand why.
>Yeah, you''ve got a recursion loop.

Given you''ve got at least one Task.tasksdue
When call Task.send_reminders

1. Task.send_reminders calls TaskMailer.deliver_task (passing the task 
instance)
2. TaskMailer.deliver_task results in the rendering of the task_due.html.erb 
template
3. The task_due.html.erb template calls TaskMailer.deliver_task (a.k.a., 
GOTO #1)
 
> Can you help me understand how I display all my records from the found
> set?
>
> All the best
>
> Jenny Bx
>
>
> Do you really want 1 email per matching task? Or do you want one email per user who has at least one matching task? Part of your code is written as if 
you want the former while part of it is written as if you want the latter.

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Jenny Blunt

2011-Jul-29 08:02 UTC

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Re: Actionmailer Help Needed

Hello zettabyte

Thanks for your reply. Am really baffled by this problem - not sure why 
I can''t get my head around it!!

I''m trying to send one email per user with a list of that
user''s task
which are due.

The problem is that I''ve been following tutorials which don''t
exactly
cover what I''m trying to achieve and am having issues modifying my code
accordingly.

Thanks for your help, looking forward to your reply

Jenny x

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Frederick Cheung

2011-Jul-29 08:27 UTC

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Re: Actionmailer Help Needed

On Jul 29, 9:02 am, Jenny Blunt
<li...-fsXkhYbjdPsEEoCn2XhGlw@public.gmane.org>
wrote:> Hello zettabyte
>
> Thanks for your reply. Am really baffled by this problem - not sure why
> I can''t get my head around it!!
>
> I''m trying to send one email per user with a list of that
user''s task
> which are due.
>
> The problem is that I''ve been following tutorials which
don''t exactly
> cover what I''m trying to achieve and am having issues modifying my
code
> accordingly.
It boils down to why is your mailer template (that is supposed to
render a single email), calling Task.send_reminders, given that is the
method that is supposed to send all the emails ? What are you trying
to iterate over in the template ?

Fred>
> Thanks for your help, looking forward to your reply
>
> Jenny x
>
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Jenny Blunt

2011-Jul-29 09:16 UTC

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Re: Actionmailer Help Needed

Hi there Fred

Thanks for your answer.

I''m just getting in a pickle with Actionmailer I have to say :(

Am just trying to send a single email to each user. I need the content 
to list their due tasks.

That''s why I was trying to display the found set.

Thanks, Jx

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Frederick Cheung

2011-Jul-29 10:22 UTC

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Re: Actionmailer Help Needed

On Jul 29, 10:16 am, Jenny Blunt
<li...-fsXkhYbjdPsEEoCn2XhGlw@public.gmane.org>
wrote:> Hi there Fred
>
> Thanks for your answer.
>
> I''m just getting in a pickle with Actionmailer I have to say :(
>
> Am just trying to send a single email to each user. I need the content
> to list their due tasks.
>
> That''s why I was trying to display the found set.
>
Forgetting about actionmailer for a second, you''re going about things
slightly backwards. send_reminders  is iterating over a set of tasks,
sending an email per task - there''s nothing you can do in your mailer
that is going to get that down to one per user.

Your send_reminders method should first be identifying those users
with at least one due task, then iterate over those users. Then you
mailer template can iterate over that user''s tasks

You might find it helpful to ditch the actionmailer bit for half an
hour and make a view / controller that would display all this
information (eg one action that displays a list of users with due
tasks and then one action that displays the list of tasks for one such
user). If you can get that going then transplanting it to a mailer
situation should be straightforward

Fred

> Thanks, Jx
>
> --
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Jenny Blunt

2011-Jul-29 11:35 UTC

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Re: Actionmailer Help Needed

Hi Fred

We created some controller actions to list all tasks, due and overdue as 
below:

In our tasks controller:

List current user''s due tasks:

@my_due = Task.find(:all, :conditions => ["dueddate <= ? AND user_id
= ?
AND status = ?", Date.today + 7.days, current_user.id, false], :include 
=> :taskcategories, :order => "dueddate asc")

I actually can''t figure out how to list all the users with overdue 
tasks.

(We''re using devise for authentication, hence the current_user bit)

Is that what you mean?

Sorry for the newbie questions...

Jenny

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Jenny Blunt

2011-Jul-29 12:05 UTC

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Re: Actionmailer Help Needed

I''ve tried doing this in my tasks controller to list all users with 
upcoming tasks but it''s not working...


    @task = Task.all
     @user = User.find(:all, :conditions => ["@task.dueddate <= ? AND
@task.status = ?", Date.today + 7.days, false])

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Frederick Cheung

2011-Jul-29 12:59 UTC

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Re: Actionmailer Help Needed

On Jul 29, 1:05 pm, Jenny Blunt
<li...-fsXkhYbjdPsEEoCn2XhGlw@public.gmane.org>
wrote:> I''ve tried doing this in my tasks controller to list all users
with
> upcoming tasks but it''s not working...
>
>     @task = Task.all
>      @user = User.find(:all, :conditions => ["@task.dueddate <=
? AND
> @task.status = ?", Date.today + 7.days, false])
>You would need to join the tasks table. Once you''ve done that,
remember that you conditions are an sql fragment so you can stick
conditions on tasks.duedate.
You''ll also need to use group by  or disctinct to not get duplicate
users.

Another approach might be to just get all the overdue tasks and
collect their users (removing duplicates obviously)

Fred> --
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Surya

2011-Jul-29 13:11 UTC

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Re: Re: Actionmailer Help Needed

the code you have written here:
  @user = User.find(:all, :conditions => *["@task.dueddate <= ? AND
@task.status = ?", Date.today + 7.days, false*])

is not correct probably you should check this :
http://api.rubyonrails.org/classes/ActiveRecord/Base.html for making
conditional statements. According to me it should not be
"@task.duedate"
inside quotes. else put #{@task.duedate} instead of simple
"@task.duedate"

On Fri, Jul 29, 2011 at 5:35 PM, Jenny Blunt
<lists-fsXkhYbjdPsEEoCn2XhGlw@public.gmane.org> wrote:
> I''ve tried doing this in my tasks controller to list all users
with
> upcoming tasks but it''s not working...
>
>
>    @task = Task.all
>     @user = User.find(:all, :conditions => ["@task.dueddate <= ?
AND
> @task.status = ?", Date.today + 7.days, false])
>
> --
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>

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Please consider the environment before printing this email.

Regards,
Surya

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Jenny Blunt

2011-Jul-29 16:45 UTC

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Re: Actionmailer Help Needed

Hi

Ok, so I have created the find user action in my controller:

@user = User.joins(:tasks).where("tasks.dueddate <= ? AND tasks.status =
?", Date.today + 7.days, false)

Which works although I need to get the distinct values out now.

What''s the next stage to get actionmailer working with this or am I 
miles off?

Thanks

Jenny

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Frederick Cheung

2011-Jul-29 18:46 UTC

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Re: Actionmailer Help Needed

On Jul 29, 5:45 pm, Jenny Blunt
<li...-fsXkhYbjdPsEEoCn2XhGlw@public.gmane.org>
wrote:> Hi
>
> Ok, so I have created the find user action in my controller:
>
> @user = User.joins(:tasks).where("tasks.dueddate <= ? AND
tasks.status > ?", Date.today + 7.days, false)
>
> Which works although I need to get the distinct values out now.
>
> What''s the next stage to get actionmailer working with this or am
I
> miles off?
So now i''d iterate over these users (rather than iterating over due
tasks) and send one email for each user. in your mailer template, you
can iterate over user.tasks.tasksdue

Fred>
> Thanks
>
> Jenny
>
> --
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Jenny Blunt

2011-Jul-30 08:53 UTC

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Re: Actionmailer Help Needed

Hi Fred

This is the part that I really don''t understand how to deal with.  I 
don''t understand how I link what you''ve asked me to do above
listing the
users with due tasks with actionmailer.

Thanks

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Jenny Blunt

2011-Jul-30 11:28 UTC

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Re: Actionmailer Help Needed

Ok, I''m nearly there.

Have figured out how to get actionmailer to email those users with tasks 
due. That was ok after I got my head around it.

I can get the email view to list ALL tasks but not just those owned by a 
user. In my view, I''ve tried this:

<% Task.tasksdue.find_each do |task| %>
  <li> <%= task.title %> </li>
<% end %>

Which calls a scope from my Task model.

 scope :tasksdue, lambda {
     where("dueddate >= ? AND user_id = ? AND status = ?",
Date.today,
:user_id, false)
  }

But I don''t get any data out of that. If I get rid of the user_id 
aspect, it lists all tasks.

How can I adjust that so it works?

Thanks

Jx

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Frederick Cheung

2011-Jul-30 15:03 UTC

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Re: Actionmailer Help Needed

On Jul 30, 12:28 pm, Jenny Blunt
<li...-fsXkhYbjdPsEEoCn2XhGlw@public.gmane.org>
wrote:> Ok, I''m nearly there.
>
> Have figured out how to get actionmailer to email those users with tasks
> due. That was ok after I got my head around it.
>
> I can get the email view to list ALL tasks but not just those owned by a
> user. In my view, I''ve tried this:
>
> <% Task.tasksdue.find_each do |task| %>
>   <li> <%= task.title %> </li>
> <% end %>
>
> Which calls a scope from my Task model.
>Like i said before, if user is the user in question and the
association is called tasks then user.tasks.tasksdue is what you want.
>  scope :tasksdue, lambda {
>      where("dueddate >= ? AND user_id = ? AND status = ?",
Date.today,
> :user_id, false)
>   }
>
> But I don''t get any data out of that. If I get rid of the user_id
> aspect, it lists all tasks.
>If you look at your log files you''d see that that is searching for
rows where the user_id is the string ''user_id''.
If you want to be able to pass parameters into a scope then you need
somelike like lambda {|parameter1, parameter2| ...} and you then to
Task.tasksdue(foo,bar)

Fred
> How can I adjust that so it works?
>
> Thanks
>
> Jx
>
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