Define any conditional in a ternary operator - angularjs

I want to change the colors of my cell, so in my table i do this on my td
data-ng-class="{selected.id == price.id && !price.isMinPrice ? 'selected' : '', selected.id == price.id && price.isMinPrice ? 'minSelected' : ''}"
i have this error:
Error: [$parse:syntax] Syntax Error: Token '.' is unexpected,
expecting [:] at column 10 of the expression [{selected.id == price.id
&& !price.isMinPrice ? 'selected' : '', selected.id == price.id &&
price.isMinPrice ? 'minSelected' : ''}] starting at [.id == price.id
&& !price.isMinPrice ? 'selected' : '', selected.id == price.id &&
price.isMinPrice ? 'minSelected' : ''}].
What is wrong ..?


You are using ng-class all wrong and that is why you are getting syntax errors.
You need to give it an object literal:
data-ng-class="{selected: selected.id == price.id && !price.isMinPrice,
minSelected: selected.id == price.id && price.isMinPrice}"
This is also much cleaner than what you were trying to do.


I think that ng-class expects structure like this: {'class-name' : booleanValue}, and if value is true, class will be applied.
So in your case:
data-ng-class="{'selected' : selected.id == price.id && !price.isMinPrice, 'minSelected' : selected.id == price.id && price.isMinPrice}"
and if you want to use ternaty operator, you can use class attribute with {{}}:
class="{{selected.id == price.id && !price.isMinPrice ? 'selected' : ''}}"

Related

value is always empty inside ternary operator statement

I am using ReactJS and a library called React-Table for an online gaming site.
In the table, I have one column cell that could potentially be empty or NULL.
So, if that column cell is null or empty or undefined, then I want to show a value called, "Dungeon Master".
If it's not null or empty, then I just want to show what should be shown(row.original.gamerTag).
So I tried using a ternary operator to check, but no matter what, the value always shows empty.
Here is where I use it:
{
Header: 'Gamer Title',
accessor: 'gamerTitle',
Cell: ({ row }) =>
<a href="#" onClick={() =>
show(
row.original.id,
row.original.gamerTitle,
row.original.gameType,
(row.original.gamerTag == 'undefined' || '' || null) ? 'Dungeon Master' : row.original.gamerTag,
row.original.gameDescription,
)}>
{row.original.gamerTitle}
</a>
},
Am I using it wrong? I don't get any errors or anything.
Thanks!

Replace
(row.original.gamerTag == 'undefined' || '' || null) ? 'Dungeon Master' : row.original.gamerTag
By
typeof row.original.gamerTag === 'undefined' || row.original.gamerTag === '' || row.original.gamerTag === null ? 'Dungeon Master' : row.original.gamerTag
Two problem, the one is myVar == 'undefined' doesnt work because you compare string and not type. And secondly, in js is not short syntaxe for concat condition. Alternatively you can try [undefined, null, ''].includes(row.original.gamerTag).

Try replacing:
(row.original.gamerTag == 'undefined' || '' || null) ? 'Dungeon Master' : row.original.gamerTag
with:
(row.original.gamerTag == 'undefined' || row.original.gamerTag == '' || row.original.gamerTag == null) ? 'Dungeon Master' : row.original.gamerTag

AngularJS ng-if with a true or false object value

Not entirely sure why this isn't working. I'm trying to hide a col is the value of driveThru is false OR equals to 'N'.
ng-if="location.driveThru === false || location.driveThru === 'N'"
However the === false isn't working and I cant determine why.

if its a boolean change as ,
"!location.driveThru' || location.driveThru === 'N'
and === with string enclosed in quotes if its a string a follows,
ng-if="location.driveThru === 'false' || location.driveThru === 'N'"

nested tertiary operator failed in javascript

What's wrong with this code?
{
"disableDiscount_3": !isEmpty(data.discounts) ? (data.discounts.map(obj => obj.days === 3 && obj.is_enable === true ? true : false) : '',
"disableDiscount_5": !isEmpty(data.discounts) ? (data.discounts.map(obj => obj.days === 5 && obj.is_enable === true ? true : false) : '',
}
Can't I nest tertiary operator within tertiary operator?

Remove ( before data.discounts.map() and trailing comma following last value set at object.
obj.days === 3 && obj.is_enable === true ? true : false is equivalent to obj.days === 3 && obj.is_enable
{
"disableDiscount_3": !isEmpty(data.discounts)
? data.discounts.map(obj => obj.days === 3 && obj.is_enable)
: "",
"disableDiscount_5": !isEmpty(data.discounts)
? data.discounts.map(obj => obj.days === 5 && obj.is_enable)
: ""
}

AngularJS ng-show ternary conditional with multiple conditions

Im working on a complex app where I need to disable a link if the ID sent from backend meets a certain criteria.
I'm using this now but not sure if it is correct:
ng-show="parentheaderData.casid === '807' || '806' || '808' ?false:true"
Does this look right?

Why don't you move this logic to a controller so you have
html :
ng-show="showParentheader(parentheaderData.casid)"
controller:
$scope.showParentheader = function(id) {
return ! (id === '807' || id ==='806' || id ==='808');
}

Thanks for all the support. The correct solution was:
ng-hide="parentheaderData.casid == '806' || parentheaderData.casid == '807' || parentheaderData.casid == '808'"

you can do like this:
ng-show="(parentheaderData.casid === '807' || parentheaderData.casid ==='806' parentheaderData.casid === || '808') ? false : true"
or:
ng-show=" !(parentheaderData.casid === '807' || parentheaderData.casid ==='806' parentheaderData.casid === || '808')"

ng-show="(parentheaderData.casid === '807' || parentheaderData.casid ==='806' parentheaderData.casid === || '808') ? false : true"

ng-class with scope that has multiple values

I would like to add a class based on the value of the scope.
It's not working :(
If the value.statut == 3, I would like to add class todo
Else If the value.statut == 2, I would like to add class done
Else If the value.statut == 1, I would like to add class doing
<span class="label" ng-class="value.statut == 3 ? 'todo' : ''; value.statut == 2 ? 'done' : ''; value.statut == 1 ? 'doing' : '';">Label</span>

The declaration needs to be slightly different:
<span class="label" ng-class="{'todo': value.statut == 3, 'done': value.statut == 2, 'doing': value.statut == 1}">Label</span>
So, the syntax is:
ng-class="{<className>: <predicate>, <className2>: <predicate2>, etc }"

Try this :
<span class="label" ng-class="{'todo': (value.statut == 3), 'done': (value.statut == 2), 'doing': (value.statut == 1)}">Label</span>
ng-class needs an object with key/value. The key is the class name and the value is a boolean.
Reference
https://docs.angularjs.org/api/ng/directive/ngClass

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