Why && lightning expression operator doesn't work?












6















According to this reference the syntax below:



<aura:if isTrue="{!and(v.isVisible,!empty(v.subjectsList))}">



should be equivalent to:



<aura:if isTrue="{!v.isVisible && !empty(v.subjectsList)}">



However, I receive the message below when I try to save the lightning component to the sandbox:



FIELD_INTEGRITY_EXCEPTION - c:SubjectSelectionView_GCC:69,34: ParseError at [row,col]:[70,34]
Message: The entity name must immediately follow the '&' in the entity reference.: Source


So, What am I missing?










share|improve this question























  • Brought this to Salesforce Docs' attention, and they have acknowledged it to be included in the docs.

    – Jayant Das
    Jan 23 at 20:17
















6















According to this reference the syntax below:



<aura:if isTrue="{!and(v.isVisible,!empty(v.subjectsList))}">



should be equivalent to:



<aura:if isTrue="{!v.isVisible && !empty(v.subjectsList)}">



However, I receive the message below when I try to save the lightning component to the sandbox:



FIELD_INTEGRITY_EXCEPTION - c:SubjectSelectionView_GCC:69,34: ParseError at [row,col]:[70,34]
Message: The entity name must immediately follow the '&' in the entity reference.: Source


So, What am I missing?










share|improve this question























  • Brought this to Salesforce Docs' attention, and they have acknowledged it to be included in the docs.

    – Jayant Das
    Jan 23 at 20:17














6












6








6








According to this reference the syntax below:



<aura:if isTrue="{!and(v.isVisible,!empty(v.subjectsList))}">



should be equivalent to:



<aura:if isTrue="{!v.isVisible && !empty(v.subjectsList)}">



However, I receive the message below when I try to save the lightning component to the sandbox:



FIELD_INTEGRITY_EXCEPTION - c:SubjectSelectionView_GCC:69,34: ParseError at [row,col]:[70,34]
Message: The entity name must immediately follow the '&' in the entity reference.: Source


So, What am I missing?










share|improve this question














According to this reference the syntax below:



<aura:if isTrue="{!and(v.isVisible,!empty(v.subjectsList))}">



should be equivalent to:



<aura:if isTrue="{!v.isVisible && !empty(v.subjectsList)}">



However, I receive the message below when I try to save the lightning component to the sandbox:



FIELD_INTEGRITY_EXCEPTION - c:SubjectSelectionView_GCC:69,34: ParseError at [row,col]:[70,34]
Message: The entity name must immediately follow the '&' in the entity reference.: Source


So, What am I missing?







lightning-aura-components






share|improve this question













share|improve this question











share|improve this question




share|improve this question










asked Jan 23 at 13:59









SauloSaulo

108110




108110













  • Brought this to Salesforce Docs' attention, and they have acknowledged it to be included in the docs.

    – Jayant Das
    Jan 23 at 20:17



















  • Brought this to Salesforce Docs' attention, and they have acknowledged it to be included in the docs.

    – Jayant Das
    Jan 23 at 20:17

















Brought this to Salesforce Docs' attention, and they have acknowledged it to be included in the docs.

– Jayant Das
Jan 23 at 20:17





Brought this to Salesforce Docs' attention, and they have acknowledged it to be included in the docs.

– Jayant Das
Jan 23 at 20:17










1 Answer
1






active

oldest

votes


















8














Instead of && you can use &amp;&amp; (the HTML entity for &). That seems to satisfy the parser and the expression will still execute your logic correctly.



So your code will be:



<aura:if isTrue="{!v.isVisible &amp;&amp; !empty(v.subjectsList)}">



Edit



As noted in the comments, it's probably better to use and like:



<aura:if isTrue="{!and(v.isVisible, !empty(v.subjectsList))}">






share|improve this answer





















  • 5





    @JayantDas No, Lightning requires it. It is not specific to the Developer Console. Go ahead and try it out in your favorite IDE. ... It's technically an oversight in the documentation, as far as I can tell. Aura has always worked this way.

    – sfdcfox
    Jan 23 at 14:17








  • 1





    AND function is more readable in case we have 2 parameters: <aura:if isTrue="{!and(v.isVisible, !empty(v.subjectsList))}">

    – Raul
    Jan 23 at 14:21






  • 1





    @JohnTowers +1 for the sharing this, a new learning today. Everyday is a new day in Salesforce.

    – Jayant Das
    Jan 23 at 14:25






  • 5





    Seems far preferable to just use and.

    – Adrian Larson
    Jan 23 at 16:37






  • 1





    Brought this to Salesforce Docs' attention, and they have acknowledged it to be included in the docs.

    – Jayant Das
    Jan 23 at 20:17











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1 Answer
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1 Answer
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active

oldest

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oldest

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active

oldest

votes









8














Instead of && you can use &amp;&amp; (the HTML entity for &). That seems to satisfy the parser and the expression will still execute your logic correctly.



So your code will be:



<aura:if isTrue="{!v.isVisible &amp;&amp; !empty(v.subjectsList)}">



Edit



As noted in the comments, it's probably better to use and like:



<aura:if isTrue="{!and(v.isVisible, !empty(v.subjectsList))}">






share|improve this answer





















  • 5





    @JayantDas No, Lightning requires it. It is not specific to the Developer Console. Go ahead and try it out in your favorite IDE. ... It's technically an oversight in the documentation, as far as I can tell. Aura has always worked this way.

    – sfdcfox
    Jan 23 at 14:17








  • 1





    AND function is more readable in case we have 2 parameters: <aura:if isTrue="{!and(v.isVisible, !empty(v.subjectsList))}">

    – Raul
    Jan 23 at 14:21






  • 1





    @JohnTowers +1 for the sharing this, a new learning today. Everyday is a new day in Salesforce.

    – Jayant Das
    Jan 23 at 14:25






  • 5





    Seems far preferable to just use and.

    – Adrian Larson
    Jan 23 at 16:37






  • 1





    Brought this to Salesforce Docs' attention, and they have acknowledged it to be included in the docs.

    – Jayant Das
    Jan 23 at 20:17
















8














Instead of && you can use &amp;&amp; (the HTML entity for &). That seems to satisfy the parser and the expression will still execute your logic correctly.



So your code will be:



<aura:if isTrue="{!v.isVisible &amp;&amp; !empty(v.subjectsList)}">



Edit



As noted in the comments, it's probably better to use and like:



<aura:if isTrue="{!and(v.isVisible, !empty(v.subjectsList))}">






share|improve this answer





















  • 5





    @JayantDas No, Lightning requires it. It is not specific to the Developer Console. Go ahead and try it out in your favorite IDE. ... It's technically an oversight in the documentation, as far as I can tell. Aura has always worked this way.

    – sfdcfox
    Jan 23 at 14:17








  • 1





    AND function is more readable in case we have 2 parameters: <aura:if isTrue="{!and(v.isVisible, !empty(v.subjectsList))}">

    – Raul
    Jan 23 at 14:21






  • 1





    @JohnTowers +1 for the sharing this, a new learning today. Everyday is a new day in Salesforce.

    – Jayant Das
    Jan 23 at 14:25






  • 5





    Seems far preferable to just use and.

    – Adrian Larson
    Jan 23 at 16:37






  • 1





    Brought this to Salesforce Docs' attention, and they have acknowledged it to be included in the docs.

    – Jayant Das
    Jan 23 at 20:17














8












8








8







Instead of && you can use &amp;&amp; (the HTML entity for &). That seems to satisfy the parser and the expression will still execute your logic correctly.



So your code will be:



<aura:if isTrue="{!v.isVisible &amp;&amp; !empty(v.subjectsList)}">



Edit



As noted in the comments, it's probably better to use and like:



<aura:if isTrue="{!and(v.isVisible, !empty(v.subjectsList))}">






share|improve this answer















Instead of && you can use &amp;&amp; (the HTML entity for &). That seems to satisfy the parser and the expression will still execute your logic correctly.



So your code will be:



<aura:if isTrue="{!v.isVisible &amp;&amp; !empty(v.subjectsList)}">



Edit



As noted in the comments, it's probably better to use and like:



<aura:if isTrue="{!and(v.isVisible, !empty(v.subjectsList))}">







share|improve this answer














share|improve this answer



share|improve this answer








edited Jan 23 at 18:56

























answered Jan 23 at 14:09









John TowersJohn Towers

2,2101817




2,2101817








  • 5





    @JayantDas No, Lightning requires it. It is not specific to the Developer Console. Go ahead and try it out in your favorite IDE. ... It's technically an oversight in the documentation, as far as I can tell. Aura has always worked this way.

    – sfdcfox
    Jan 23 at 14:17








  • 1





    AND function is more readable in case we have 2 parameters: <aura:if isTrue="{!and(v.isVisible, !empty(v.subjectsList))}">

    – Raul
    Jan 23 at 14:21






  • 1





    @JohnTowers +1 for the sharing this, a new learning today. Everyday is a new day in Salesforce.

    – Jayant Das
    Jan 23 at 14:25






  • 5





    Seems far preferable to just use and.

    – Adrian Larson
    Jan 23 at 16:37






  • 1





    Brought this to Salesforce Docs' attention, and they have acknowledged it to be included in the docs.

    – Jayant Das
    Jan 23 at 20:17














  • 5





    @JayantDas No, Lightning requires it. It is not specific to the Developer Console. Go ahead and try it out in your favorite IDE. ... It's technically an oversight in the documentation, as far as I can tell. Aura has always worked this way.

    – sfdcfox
    Jan 23 at 14:17








  • 1





    AND function is more readable in case we have 2 parameters: <aura:if isTrue="{!and(v.isVisible, !empty(v.subjectsList))}">

    – Raul
    Jan 23 at 14:21






  • 1





    @JohnTowers +1 for the sharing this, a new learning today. Everyday is a new day in Salesforce.

    – Jayant Das
    Jan 23 at 14:25






  • 5





    Seems far preferable to just use and.

    – Adrian Larson
    Jan 23 at 16:37






  • 1





    Brought this to Salesforce Docs' attention, and they have acknowledged it to be included in the docs.

    – Jayant Das
    Jan 23 at 20:17








5




5





@JayantDas No, Lightning requires it. It is not specific to the Developer Console. Go ahead and try it out in your favorite IDE. ... It's technically an oversight in the documentation, as far as I can tell. Aura has always worked this way.

– sfdcfox
Jan 23 at 14:17







@JayantDas No, Lightning requires it. It is not specific to the Developer Console. Go ahead and try it out in your favorite IDE. ... It's technically an oversight in the documentation, as far as I can tell. Aura has always worked this way.

– sfdcfox
Jan 23 at 14:17






1




1





AND function is more readable in case we have 2 parameters: <aura:if isTrue="{!and(v.isVisible, !empty(v.subjectsList))}">

– Raul
Jan 23 at 14:21





AND function is more readable in case we have 2 parameters: <aura:if isTrue="{!and(v.isVisible, !empty(v.subjectsList))}">

– Raul
Jan 23 at 14:21




1




1





@JohnTowers +1 for the sharing this, a new learning today. Everyday is a new day in Salesforce.

– Jayant Das
Jan 23 at 14:25





@JohnTowers +1 for the sharing this, a new learning today. Everyday is a new day in Salesforce.

– Jayant Das
Jan 23 at 14:25




5




5





Seems far preferable to just use and.

– Adrian Larson
Jan 23 at 16:37





Seems far preferable to just use and.

– Adrian Larson
Jan 23 at 16:37




1




1





Brought this to Salesforce Docs' attention, and they have acknowledged it to be included in the docs.

– Jayant Das
Jan 23 at 20:17





Brought this to Salesforce Docs' attention, and they have acknowledged it to be included in the docs.

– Jayant Das
Jan 23 at 20:17


















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