I feel more comfortable in deferring to my more advanced colleagues here.
Pretty sure that this should work..... But at an elegance level I am not
happy with this. Seems to me that in the Attendance model I should use a
scope.
<%= form_for @students, :url=> {:controller=>"student", :action => "list"}
do |nf| %>
<% for student in @students %>
<table >
<tr >
<th >First Name</th>
<th >MI</th>
<th >Last Name</th>
</tr>
<tr >
<td ><%= nf.text_field(student.first_name) %></td>
<td ><%= nf.text_field(student.mi) %></td>
<td ><%= nf.text_field(student.last_name) %></td>
</tr>
<%= nf.fields_for :attendances,
student.find(student.id).attendences do |builder| %>
### Not sure that .find is necessary in Rails 4. I think
you could just write
### <%= nf.fields_for :attendances,
student(student.id).attendances do |builder| %>
<tr >
<td ><%= builder.text_field(:attendance_date) %></td>
<td ><%= builder.label :present, "Present?" %><%=
builder.check_box :present %></td>
<td ><%= builder.text_field(:comment) %></td>
</tr>
<% end %>
<tr >
<td colspan=3 ><%= nf.submit "Add Attendence Record" %></td>
</tr>
</table>
<br />
<div style="display:none>
<%= nf.hidden_field(:id, :value => student.id) %>
</div>
<% end %>
<% end %>
Student Controller
def list
if params[:commit] == "Add Attendence Record"
if add
......
end
else
@students = Student.find(:all)
end
end
def add
@students_tmp = Student.find(params[:id])
@students_tmp.attendances << Attendance.new()
if @students_tmp.errors.empty?
@students = Student.find(:all)
return true
else
return false
end
end
Student Model
has_many :attendances, :dependent => :destroy
attr_accessible :attendances_attributes, :allow_destroy => true
accepts_nested_attributes_for :attendances
Attendance Model
belongs_to :student
## Posed question
## scope :match_student_parent , where(:student_id => :id)
## The tie between the controller and model, I am not certain... Assuming
attributes accessible
Then fields_for in the view should read:
<%= nf.fields_for :match_student_parent,
student.attendances.match_student_parent do |builder| %>
Pretty sure advanced colleagues should understand the spirit in which I am
writing
On Monday, June 22, 2015 at 2:23:09 PM UTC-4, Mohammad Akram wrote:
>
> I am using Rails 4.2.1 and ruby 2.2.1p85 (2015-02-26 revision 49769)
> [x86_64-darwin14]
>
>
>
> On Monday, 22 June 2015 23:46:37 UTC+5:30, Elizabeth McGurty wrote:
>>
>> What version of Rails are you using? In the meantime, you should
>> research scope in models....
>>
>> On Monday, June 22, 2015 at 2:04:04 PM UTC-4, Mohammad Akram wrote:
>>>
>>> Hi Elizabeth, thanks for the reply. I want to take attendance for entire
>>> class of students not just one person.
>>>
>>>
>>>
>>>
>>> On Monday, 22 June 2015 19:47:57 UTC+5:30, Elizabeth McGurty wrote:
>>>>
>>>> Hope this helps... There might be typos, but I think it may lead you in
>>>> the right direction... Not sure the most elegant direction
>>>>
>>>> Just assuming that attendance model contains attendance_date, present,
>>>> comment
>>>>
>>>> Otherwise checkout Railscasts:#196 Nested Model Form (revised).
>>>>
>>>> <%= form_for @student , :url=> {:controller=>"student", :action =>
>>>> "list", :id => @student.id} do |nf| %>
>>>>
>>>> <table >
>>>> <tr >
>>>> <th >First Name</th>
>>>> <th >MI</th>
>>>> <th >Last Name</th>
>>>>
>>>> </tr>
>>>>
>>>> <tr >
>>>> <td ><%= nf.text_field(:first_name) %></td>
>>>> <td ><%= nf.text_field(:mi) %></td>
>>>> <td ><%= nf.text_field(:last_name) %></td>
>>>>
>>>>
>>>> </tr>
>>>>
>>>>
>>>> <%= nf.fields_for :attendances, @student.attendences do
>>>> |builder| %>
>>>>
>>>> <tr >
>>>>
>>>> <td ><%= builder.text_field(:attendence_date) %></td>
>>>> <td ><%= builder.label :present, "Present?" %><%=
>>>> builder.check_box :present %></td>
>>>> <td ><%= builder.text_field(:comment) %></td>
>>>>
>>>> </tr>
>>>>
>>>> <% end %>
>>>>
>>>> <tr >
>>>> <td colspan=3 ><%= nf.submit "Add Attendence Record" %></td>
>>>> </tr>
>>>>
>>>> </table>
>>>>
>>>>
>>>> <% end %>
>>>>
>>>> Student Controller
>>>>
>>>> def list
>>>>
>>>> if params[:commit] == "Add Attendence Record"
>>>> if add
>>>> ......
>>>> end
>>>> else
>>>> @student = Student.find(param[:id])
>>>> end
>>>>
>>>> end
>>>>
>>>>
>>>> def add
>>>>
>>>> @student = Student.find(params[:id])
>>>> @student.attendences << Attendance.new()
>>>> if @student.errors.empty?
>>>> return true
>>>> else
>>>> return false
>>>> end
>>>>
>>>> end
>>>>
>>>> Student Model
>>>>
>>>> has_many :attendances, :dependent => :destroy
>>>> attr_accessible :attendances_attributes, :allow_destroy => true
>>>> accepts_nested_attributes_for :attendances
>>>>
>>>>
>>>> Attendence Model
>>>>
>>>> belongs_to :student
>>>>
>>>>
>>>>
>>>> On Monday, June 22, 2015 at 8:10:15 AM UTC-4, Mohammad Akram wrote:
>>>>>
>>>>> Hi, i have just started with rails. I am making a attendance web app.
>>>>> I want to insert student attendance into attendances table and unable to
>>>>> do
>>>>> it as the form just inserts only last entry of the form. Student table
>>>>> and
>>>>> Attendances table have associations(has_many,belongs_to,). Please let me
>>>>> know how the form should be and controller api should look like.
>>>>>
>>>>
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