partials

问题 I have a template matrix class. I try to implement the size (always square) as a template parameter. template< // Type of data typename type_t, // dimension of the matrix 4 -> 4x4 std::size_t dim_t, // I don't want a matrix of non numeric value typename = typename std::enable_if_t< std::is_arithmetic_v< type_t >, type_t > > class Matrix final { // .... } With this code, I would like to be able to make a different method for different sizes of matrix. Because some method force me to take it

问题 My question is so simple that I am hesitating to ask. (Why are all examples provided in the documentation unnecessary complicated?) I want to transfer the title section for my rails project in a partial (DRY...). Very much simplified, the calling line in my show.html.erb is: <%= render "shared/headerblock", locals: {cntrnm: @cntrlst.CountrName } %> Let's reduce the code in the partial _headerblock.html.erb to the absolute minimum: My Countryname is <%= cntrnm %> Rails complains (even without

问题 I'm trying a few different ways to define and pass the local variable to the partial, but it keeps saying it's undefined: in Show file: <% @startups.each do |startup| %> <%= render :partial => "profile/startup" %> <% end %> in partial: <%= simple_form_for [@commentable, @comment], :remote => true do |form| %> <%= form.input :content, label: false, :input_html => { :id => "#{startup.user_id}" } %> <%= form.submit "Submit" %> <% end %> These are the other ways I'm trying to pass the variable,

问题 I'm trying a few different ways to define and pass the local variable to the partial, but it keeps saying it's undefined: in Show file: <% @startups.each do |startup| %> <%= render :partial => "profile/startup" %> <% end %> in partial: <%= simple_form_for [@commentable, @comment], :remote => true do |form| %> <%= form.input :content, label: false, :input_html => { :id => "#{startup.user_id}" } %> <%= form.submit "Submit" %> <% end %> These are the other ways I'm trying to pass the variable,

问题 I'm trying a few different ways to define and pass the local variable to the partial, but it keeps saying it's undefined: in Show file: <% @startups.each do |startup| %> <%= render :partial => "profile/startup" %> <% end %> in partial: <%= simple_form_for [@commentable, @comment], :remote => true do |form| %> <%= form.input :content, label: false, :input_html => { :id => "#{startup.user_id}" } %> <%= form.submit "Submit" %> <% end %> These are the other ways I'm trying to pass the variable,

问题 I have a little question about HBS and partials : How can I pass data to a partial ? Suppose I have an index.html template which include a head.html partial. I have a code like this : server.js : var express = require('express'); var app = express(); var hbs = require('hbs'); hbs.registerPartials(__dirname + './views/partials'); app.set('view engine', 'html'); app.engine('html', hbs.__express); app.use(express.bodyParser()); app.get('/:item', function(req, res) { res.render('index',{title:"My

问题 I was trying to create an action for one of the partials in my rails application, but wondered how to name it. Does it have the underscore at the beginning? Like: def _my_partial end or no underscore? Not mentioned in the controllers guide 回答1: A partial is a piece of view which is embedded in the main view or within another partial . The purpose of a partial is typically for re-use or to making view code cleaner. If you need to use an action to render a partial, then it's probably better to

问题 I was trying to create an action for one of the partials in my rails application, but wondered how to name it. Does it have the underscore at the beginning? Like: def _my_partial end or no underscore? Not mentioned in the controllers guide 回答1: A partial is a piece of view which is embedded in the main view or within another partial . The purpose of a partial is typically for re-use or to making view code cleaner. If you need to use an action to render a partial, then it's probably better to

问题 I have a method in application_contoller.rb that includes a call to send_file . I'm calling it from a partial that's rendered by javascript, and getting the following error - ActionView::Template::Error (undefined method `send_file' for #<#<Class:0x0... I can kind of see what's happening - send_file is a controller method, so unavailable in the way I'm using it - my question is, how do I make it available? 回答1: You can define your method in controller as helper method: helper_method :send

问题 The Situation So when I visit a page, I want to be able to apply a layout to a partial (I have three partials that I want with the same layout). Right now, I am trying to do it with this command: <%= render :partial => "shared/services/essay", :layout => "layouts/services/tab_pane", :locals => { :service => "essay" } %> where shared/services/essay goes something like: <% content_for :intro do %> <p> blah. </p> <% end %> <% content_for :workflow do %> <div> blah. </div> <% end %> <% content