Passing data from node to jade?

问题:

The problem is I render a view and send some data

console.log(products); // shows an array
res.render('seller/sell',{'shop_id':req.user.shop_id ,'products':products});

and I save the data like this in jade

input(id='shop_id',type='hidden',name='shop_id',value='#{shop_id}')
input(id='pd',type='hidden',name='pd',value='#{products}')

 if(products !='')
    each val , key in products
        a(href!='home/sell/edit?id=#{val.id} ',class='product')
            img(class='product_thum',src!='#{ val.product_thum}',alt!='#{ val.product_name}',title!='#{ val.product_name}')
            p.product_name #{ val.product_name}

and then I try to get the products

var d = $('#pd').val();
console.log(typeof d);  //shows string

I know that products shuld be a array otherwise

    if(products !='')
    each val , key in products
        a(href!='home/sell/edit?id=#{val.id} ',class='product')
            img(class='product_thum',src!='#{ val.product_thum}',alt!='#{ val.product_name}',title!='#{ val.product_name}')
            p.product_name #{ val.product_name}

Wont work, but why did I get a string when I need the array?

What did I do wrong?

回答1:

You cannot 'store' an array in a hidden input field, but what you could do is store a list of the product id's, something like this:

var productIds = products.map(function(product){return product.id}).toString();

res.render('seller/sell',
  {'shop_id':req.user.shop_id ,'products':products, productIds: productIds});

Then, in your jade view:

input(id='shop_id',type='hidden',name='shop_id',value='#{shop_id}')
input(id='pd',type='hidden',name='pd',value='#{productIds}')

 if(products !='')
    each val , key in products
        a(href!='home/sell/edit?id=#{val.id} ',class='product')
            img(class='product_thum',src!='#{ val.product_thum}',alt!='#{ val.product_name}',title!='#{ val.product_name}')
            p.product_name #{ val.product_name}

The value of pd will now be a comma separated list of product Ids

Not particularly elegant, but it solves the problem.

回答2:

Best way to show comma separated string Example data = abc,pqr,lmn;

below code in js file
test = data.toString().split('",");
res.render("show.jade",{list: test});
display the code in jade as
table
 tbody
    each item in list
     tr
      td #{item}