How can we check a condition in underscore and print accordingly?
Sample code.
<% if(status==1){ %>
<%= status %>
<% } %>
Is there a way to remove the overlapping %> and <%= ??
I am a php developer and the above code in php would be :
<?php
if($status==1){
echo $status;
}
?>
Is there a way to echo in underscore like "echo"?
yes, try with print();
like:
<% if(status===1) {
print(status);
} %>
docs: http://underscorejs.org/#template
Related
I have a list of files in a folder that I need to serve inside the parent as a child template. I would like to do something like this:
<% var noScriptBody = 'message-scriptless.ejs' %>
<% include noScriptBody %>
or <%include <%= noScriptBody %>/message-scriptless' %> where <%= noScriptBody %> are the specific child template to include.
For example, I want to include <% include carousel/message-scriptless %> and <% include modal/message-scriptless %> where the path is variable ['carousel', 'modal', etc]
You can include dynamic template like this
for ex. your array passed is pathArray = ['carousel', 'modal', etc]
<% for (const path in pathArray) { %>
<%- include(path +'/message-scriptless.ejs') %>
<% } %>
Here, we iterate through the pathArray & include message-scriptless.ejs from each folder as shown in code above
Please correct me if I misunderstood your requirements
For an example, you can look at this code below: index.ejs
<!-- Only show text -->
<% var noScriptBody = 'message-scriptless' %>
<%= noScriptBody %>
<!-- Show template -->
<% var noScript = 'message-scriptless' %>
<%- include(noScript) -%>
<!-- Show template `message-scriptless` from `carousel` directory -->
<% var carouselMessageSciptLess= 'carousel/message-scriptless' %>
<%- include(carouselMessageSciptLess) -%>
Make sure in the same directory, you've a file message-scriptless.ejs.
Updated: For mapping your variable, you can use this code below:
<% arrayPath.forEach(function(path){
include(path + '/message-scriptless');
}) %>;
From code above, this is an example directory structure:
src > app.js
views > index.ejs
views > message-scriptless.ejs
views > carousel > message-scriptless.ejs
package.json
For more information about this ejs, you can read this documentation.
For an example, you can look at my codeSandbox: https://codesandbox.io/s/example-ejs-app-mhgrh
I hope it can help you.
By design, some classes will deal with only a subset of available languages.
the globalize-accessors gem is quite useful, however, the rendering requires that the following be defined
Class.globalize_attribute_names
so while available_locales = [:en, :ru, :fr, :de], the goal is to work with a smaller array [:en, :ru]
The documentation states Calling globalize_accessors with no options will therefore generate accessor methods for all translated fields and available languages. But the purported way to invoke is in the model
globalize_accessors :locales => [:en, :fr], :attributes => [:title]
How can the globalize_accessorsmethod refer to an array, something generated by the likes of
#post.owner.ownerlocales.pluck('locale')
(although the array values are quoted...)
A working solution found but that does not address the above question, is based on the fact that globalize-accessors
gives you access to methods: title_pl, title_en, title_pl=, title_en=
Thus, a controller method that generates a whitelist
#locales = []
#post.owner.ownerlocales.each do |ol|
locale = ol.locale
#locales.push(locale)
end
... then process in the view filtering out the globalize_processors from whitelist
<% Post.globalize_attribute_names.each do |lang| %>
<% my_string = lang.to_s %>
<% #locales.each do |locale| %>
<% checkstring = "_" + locale %>
<% if my_string.include? checkstring %>
<div class="row">
<%= t(lang[0..-4]) %> - <%= lang[-2, 2] %> <br />
<%= f.text_area lang, rows: "3" %>
</div>
<% end %>
<% end %>
<% end %>
Not efficient, functional.
I'm trying to convert erb templates to epp (new company policy) and there isn't a lot of documentation on epp yet.
Here's what i have in erb:
<% filter.select{|x| x != 'filtertype'}.sort.each do |key, element| -%>
<%= key %>: '<%= element %>'
<% end -%>
it works great! however i have to find the equivalent for epp. I can get the "each" part to work, but the select method isn't working for me.
I'm stumped!
I tried something like:
<% $filter.select { |$x| $x != 'filtertype'}.each |$key, $element| { -%>
<%= $key %>: '<%= $element %>'
<% } -%>
this in particular errors on '|' for the $x.
I also tried:
<% $filter.select |$x| {$x != 'filtertype'}.each |$key, $element| { -%>
<%= $key %>: '<%= $element %>'
<% } -%>
but that gives me something like "Error while evaluating a Method call, select(): Wrong number of arguments given 1 for 3"
I've tried moving around the {} and changing them to (), but no luck.
does anyone have any ideas?
Thanks!
As Dominic Cleal mentions in the comment, select() is not a Puppet function, however filter() is and is the equivalent of select in Ruby.
Therefore:
Given a class:
class foo () {
# Some test data.
$filter = {
'filtertype' => 'foo',
'apples' => 1,
'bananas' => 2,
}
# How to declare the ERB template for comparison:
file { '/foo':
ensure => file,
content => template('foo/mytemplate.erb'),
}
# How to declare the EPP template for comparison:
file { '/bar':
ensure => file,
content => epp('foo/mytemplate.epp', {'filter' => $filter}),
}
}
Content of the ERB file exactly as given in the question:
<% #filter.select{|x| x != 'filtertype'}.sort.each do |key, element| -%>
<%= key %>: '<%= element %>'
<% end -%>
Content of an equivalent EPP file:
<% | Hash $filter | -%>
<% include stdlib -%>
<% $filter.keys.sort.filter |$k| {$k != 'filtertype'}.each |$k| { -%>
<%= $k %>: '<%= $filter[$k] %>'
<% } -%>
Things to note:
1) You need include stdlib to access the keys and sort functions.
2) The variable name $filter now clashes with the built-in Puppet function filter(), which is syntactically fine, but confusing, so you would consider renaming the $filter variable to something else for clarity.
Also, if you don't care about sorting the keys, then I could make what you tried work using:
<% | Hash $filter | -%>
<% $filter.filter |$k| {$k[0] != 'filtertype'}.each |$k, $v| { -%>
<%= $k %>: '<%= $v %>'
<% } -%>
See also here where I just answered a similar question.
So I would simply like to post to my root. My problem is that if I try to do it the second time (first time works fine) I am posting /basic_pages/basic_pages/home instead of /basic_pages/home. Why does that happen and how do I fix this?
home.html.erb:
<h1>BasicPages#home</h1>
<p>Find me in app/views/basic_pages/home.html.erb</p>
<%= form_tag ('basic_pages/home') do %>
<%= text_field_tag :my_input %>
<%= submit_tag "Send input" %>
<% end %>
routes.rb
Rails.application.routes.draw do
root 'basic_pages#home'
post 'basic_pages/home'
get 'about' => 'basic_pages#about'
end
Hope this provides all the information necessary.
Instead of using form_tag ('basic_pages/home') use form_tag ('/basic_pages/home'). When you have posted the url is getting changed to /basic_pages/home, and then the form is again posting to /basic_pages/basic_pages/home, because of the relative path given to the form.
Try this
Rails.application.routes.draw do
post '/' => "basic_pages#home", as: "root"
get 'about' => 'basic_pages#about'
end
home.html.erb:
<%= form_tag ('/') do %>
<%= text_field_tag :my_input %>
<%= submit_tag "Send input" %>
<% end %>
How do I iterate only through all hidden pages in SilverStripe?
$Children excludes hidden pages. $AllChildren includes all pages. Is there a way to include only hidden pages?
We can write a function to return only the hidden children like this:
public function HiddenChildren() {
return $this->AllChildren()->filter('ShowInMenus', false);
}
Then in our template we can loop through the hidden children like this:
<% loop $HiddenChildren %>
$Title
<% end_loop %>
Well, a simple if in the template might do the trick:
<% loop $AllChildren %>
<% if not $ShowInMenus %>
$Title
<% end_if %>
<% end_loop %>
See https://docs.silverstripe.org/en/3.1/developer_guides/templates/syntax/#negation