In HandleBars.js I appear a car list (for rentals cars) ,… well like is ALL CARS HAVE AIR CONDITION - But in reality ONE car hasn’t … eg json category G (cat in JSON) HOW SET SO
Maybe right now this is the only one.
But if you think it might happen that at some point it might be more than only this one I think it would be a good idea to either create a relational table you could do JOIN queries on, or at least do an ALTER TABLE query and add that field to the existing table.
Personal experience has more than once shown me that taking the “easy” way in the short term often ends up being “harder” in the long term.
Yes, that, and that often data gets scattered about and requires more effort in remembering where everything is.
The “exceptions to the rule” always started off being acceptably manageable, but all too often the “unexpected” and unplanned for happens and by the time things get “big” I have a mess on my hands.
I did that for a script once in order to speed up the time it took to create. It took 5 years of my spare time to write the script with everything hard coded and then another 5 years of my spare time to remove all the hard coding (at least I think its all removed now).
This is actually possible, although it goes against Handlebars’ logicless templating system. You have to create a custom helper that handles all types of comparison operators. I got the code from this website, but I’ll paste it here:
Handlebars.registerHelper('compare', function(lvalue, rvalue, options) {
if (arguments.length < 3)
throw new Error("Handlerbars Helper 'compare' needs 2 parameters");
var operator = options.hash.operator || "==";
var operators = {
'==': function(l,r) { return l == r; },
'===': function(l,r) { return l === r; },
'!=': function(l,r) { return l != r; },
'<': function(l,r) { return l < r; },
'>': function(l,r) { return l > r; },
'<=': function(l,r) { return l <= r; },
'>=': function(l,r) { return l >= r; },
'typeof': function(l,r) { return typeof l == r; }
}
if (!operators[operator])
throw new Error("Handlerbars Helper 'compare' doesn't know the operator "+operator);
var result = operators[operator](lvalue,rvalue);
if( result ) {
return options.fn(this);
} else {
return options.inverse(this);
}
});
I haven’t implemented it yet, but it’s in my plans and it seems easy enough.