I actually want to my database entries to be empty each time the app is accessed. But i am not getting any idea regarding this. Below is my code which takes 3 inputs from user and displays them in tabular form but each time I display the table old entries are also getting displayed. I want that once all the entries are displayed the database should get cleared.
<p>enter the name with registration number of students</p>
<form accept-charset="UTF-8" action="/pages/add" method="post">
<input id="nam" name="nam" type="text">
<input id="reg" name="reg" type="text">
<input id="cls" name="cls" type="text">
<input name="commit" type="submit" class="btn" value="Add todo">
</form>
<table width="100%">
<tr>
<th>NAME</th>
<th>REGISTRATION NUMBER</th>
<th>CLASSES ATTENDED</th>
</tr>
<tr>
<% #pages.each do |t| %>
<td><%= t.name_student %></td>
<td><%= t.reg_no %></td>
<td><%= t.classes_at %></td>
</tr>
<% end %>
</table>
Related
I have a table set up in Amazon mturk with a single row which the user can fill in with the relevant details. However, sometimes the user will need to fill in two or three more rows of data. I want them to be able to click an "add new row" button and then a new row appears at the bottom of the table which is identical to the row above for them to fill in.
I tried looking at another task to see how they got the add row button to work but I can't figure out how they did it https://worker.mturk.com/projects/3PP5EK5QU1Q6PKONUENX4D1ESGSUNM/tasks?ref=w_pl_prvw
When I include their code of <input data-action ... it gives me an error saying the name is not defined
<!-- You must include this JavaScript file -->
<script src="https://assets.crowd.aws/crowd-html-elements.js"></script
<!-- For the full list of available Crowd HTML Elements and their input/output documentation,
please refer to https://docs.aws.amazon.com/sagemaker/latest/dg/sms-ui-template-reference.html -->
<!-- You must include crowd-form so that your task submits answers to MTurk -->
<crowd-form answer-format="flatten-objects">
<div>
<strong>Instructions: </strong>
<span>XX</span>
<div>
<div>
<p>Link to the Website: URL </p>
<p>City: "${City}"</p>
</div>
<div>
<table>
<tr>
<th>Plan Name</th>
<th>Price</th>
<th>Internet Quota (GB)</th>
<th>Local Quota (GB)</th>
<th>Other Quota</th>
</tr>
<tr>
<td>
<form>
<crowd-input name="Plan" placeholder="e.g. InternetMAX 4.5GB" required></crowd-input>
</form>
</td>
<td>
<form>
<crowd-input name="Price (Rp)" placeholder="e.g. 42000" required></crowd-input>
</form>
</td>
<td>
<form>
<crowd-input name="Internet Quota GB" placeholder="e.g. 0.5" required></crowd-input>
</form>
</td>
<td>
<form>
<crowd-input name="Local Quota GB" placeholder="e.g. 2" required></crowd-input>
</form>
</td>
<td>
<form>
<crowd-input name="Other Quota GB" placeholder="e.g. 0.5" required></crowd-input>
</form>
</td>
<td>
<input data-action="more-items" type="button" value="Add Items">
</td>
</tr>
</table>
</div>
</div>
</div>
```
``
I'm having this issue where I want to display the correct answer in a check box in Rails, to no avail.
The structure is further complicated by the fact that my models are nested into one another so that Survey not only has_many, but also accepts_nested_attributes_for Questions and Questions has_many Choices similarly. The problem is that I'm simply not able to get the box checked for the correct answer.
The data are saved to the database as a boolean in a column called correct_choice and this code for the show action shows the check boxes, but the correct choice is not checked:
<table class="col-md-10">
<thead>
<tr>
<% for question in #survey.questions do %>
<li><%= h question.content %></li>
<% for choice in question.choices do %>
<li><%= h choice.content %>
<%= h check_box(:choice, :correct_choice ) %>
<% end %>
</li>
</li>
<% end %>
</tr>
</thead>
</table>
I've read the documentation, but I cannot figure out how to apply it to my case. Can anybody point me in the right direction?
EDIT
This is the HTML that I get out:
<table class="col-md-10">
<thead>
<tr>
<li>Is this a question?</li>
<li>I'm not big. I'm having a breakdown.
<input name="correct_choice[content]" type="hidden" value="0" /><input type="checkbox" value="1" name="correct_choice[content]" id="correct_answer_content" />
<li>Come on, I'm not big.
<input name="correct_choice[content]" type="hidden" value="0" /><input type="checkbox" value="1" name="correct_choice[content]" id="correct_choice_content" />
<li>Who is hungry?
<input name="correct_choice[content]" type="hidden" value="0" /><input type="checkbox" value="1" name="correct_choice[content]" id="correct_choice_content" />
<li>Pass the cheese, please.
<input name="correct_choice[content]" type="hidden" value="0" /><input type="checkbox" value="1" name="correct_choice[content]" id="correct_choice_content" />
</li>
</li>
</tr>
</thead>
</table>
I figured it out thanks to advice from #davidwessman. What he told me was to display the html and inspect. I did and compared to the html from the edit action (the one that works).
It then became clear that I needed to use the check_box_tag command instead of check_box. This is the code that I now use:
<thead>
<tr>
<% for question in #survey.questions do %>
<li><%= h question.content %></li>
<% for choice in question.choices do %>
<li><%= h choice.content %>
<%= check_box_tag "correct_choice", "yes", answer.correct_choice %>
<% end %>
</li>
</li>
<% end %>
</tr>
</thead>
I'm a newbie.
My problem is that i have a button and i want to set the value by a ASP.NET variable.
<input type="button" id="mybt" value="<%=Student.Name %>" />
This code is not working.
The code:
<%var Products = (IEnumerable<Demo.Models.Product>)ViewBag.Products;%></div>
<div>
<table border="1">
<tr>
<td>ID</td>
<td>Name</td>
<td>Price</td>
</tr>
<%foreach(var product in Products)
{ %>
<tr>
<td style="width:68px;height:20px">
<%=product.Id %>
</td>
<td style="width:120px">
<%=product.Name%>
</td>
<td style="width:120px">
<%=product.Price %>
</td>
<td style="width:120px">
<input type="button" value='<%=product.Id%>' />
<%} %>
</td>
</tr>
Instead of <%=Student.Name %> use this: #Student.Name
Provided that "Student" is the model name and "Name" is the property you want.
The reason for this is because <%= %> works for aspx but not the razor view engine which is probably what you have chosen for your MVC solution.
I have a "search" page that have some controls and below is the search page code:
<%= form_for :search, :url => { :method => :get, :action => :search } do |f| %>
<table>
<tr>
<td align="center" style="vertical-align:top;">
<h2 style="color:Black; font-size: x-large;">Specs</h2>
<table>
<tr>
<td align="center">
<input type="text" name="tf_Zip" Style="text-align: left;" BackColor="#e5e5e5" Width="180px" ForeColor="Gray" Font-Size="Large">
</td>
</tr>
</table>
<table>
<tr>
<td>
<div class="button">
<input type="submit" name="search" value="Search" class="buttonSearch">
</div>
</td>
</tr>
</table>
</td>
<td align="center" style="vertical-align:top;">
<h2 style="color:Black; font-size: x-large;">
Result
</h2>
<% #user_zip.each do |uzr_zip| %>
<h1><%= uzr_zip.First_Name %></h1>
<% end %>
<table id="searchResult" width="100%" runat="server">
<tr>
<td bgcolor="#CCDBE0">
Image:
</td>
<td bgcolor="#CCDBE0">
<%= f.label(:zip, "Mentor") %>
</td>
</tr>
</table>
</td>
</tr>
</table>
<% end %>
And when I am trying to get the textbox value into the controllers page like below
def search
#students=Students.all
#blah = params[:search][:tf_Zip]
end
render 'search'
end
Then it gave me an error below, at this line #blah = params[:search][:tf_Zip]
undefined method `[]' for nil:NilClass
Kindle help me. Thanks
I think your params[:search] is nil?
so for this you can use
#blah = params[:tf_Zip]
or change your input field like this
<%= f.text_field :tf_Zip %>
or you can use like this
<input type="text" name="search[tf_Zip]" Style="text-align: left;"
BackColor="#e5e5e5" Width="180px" ForeColor="Gray" Font-Size="Large">
Look at your log: you will see what is coming through in params, then you'll see why params[:search][:tf_Zip] doesn't work.
The error is telling you, effectively, that params[:search] is nil, and that you can't call [tf_Zip] on nil.
Your problem is this line:
<input type="text" name="tf_Zip" Style="text-align: left;" BackColor="#e5e5e5" Width="180px" ForeColor="Gray" Font-Size="Large">
It will populate params[:tf_Zip] because it's name is "tf_Zip". If you want it to populate params[:search][:tf_Zip] then you should set the name attribute to search[tf_Zip].
What would be nicer though is to use the rails form field helpers. I don't know why you have so much raw html inside a form_for.
<input type="text" name="tf_Zip" Style="text-align: left;" BackColor="#e5e5e5" Width="180px" ForeColor="Gray" Font-Size="Large">
can be replaced with
<%= f.text_field :tf_Zip %>
which will populate params[:search][:tf_Zip]
For the other attributes (Style etc) you should set these with css. Rails will probably put a class on the field automatically which you can use to do this. The "style" (note lowercase) attribute can be used instead but it's clumsy as it doesn't allow you to restyle the field (and more generally, your site) with css.
Have you checked to see if params[:search] is nil? If it is, then trying to pull [:tf_Zip] will cause that error.
Usually you'd submit the form from one controller action and handle the result in another action.
And your statement end looks misplaced.
I've a simple page with link_to_remote Rails Ajax function and HTML table.
I'd like to change row of the table when click that link.
This is my html.
<table border="1">
<tr>
<td><div id="ajax_result_1">1</div></td>
<div id="ajax_result_2"><td>2</td></div>
</tr>
<div id="ajax_result_3">
<tr>
<td>3</td>
<td>4</td>
</tr>
</div>
</table>
And this is my code.
<%= link_to_remote 'Change', :update => "ajax_result_1", :url => "change_path" %>
change action just render simple text.
When I use ajax_result_1 for :update, it worked okay.
But, not for ajax_result_2 and ajax_result_3.
Is there a way to solve this? I want to replace row of the table.
<div id="ajax_result_2"><td>2</td></div>
this should be
<td><div id="ajax_result_2">2</div></td>
and
<div id="ajax_result_3">
<tr>
<td>3</td>
<td>4</td>
</tr>
</div>
should be
<tr id="ajax_result_3">
<td>3</td>
<td>4</td>
</tr>
you cann't use <div> tag in table directly if you want to use <div> you have to use it in the <td> only.