How do you create complex AngularJS data bindings from Firebase? -


i working on basic angularjs application firebase backend. part of database looks like...

student - firstname - lastname - schedule -- course1 -- course2...

i have page displaying html table of students ng-repeat. here's code table...

<table> <thead>   <th>first name</th>   <th>last name</th>   <th>youth/adult</th>   <th>courses selected?</th>   <th>...</th> </thead> <tbody>   <tr ng-repeat="(id, student) in students">     <td>{{ student.firstname }}</td>     <td>{{ student.lastname }}</td>     <td>{{ student.type }}</td>     <td>{{ student.hasselectedcourses }}</td>     <td>...</td>   </tr> </tbody>

the controller connecting data , table straight forward. it's grabbing array of students firebase , chucking $scope.

$scope.students = students;

i'm getting students' first , last names, know repeat working in general. i'm having difficulty 1 particular column i'd display - courses selected? column. i'd intelligently fill boolean (probably icon or something) based on existance of schedule hanging off student in database. thought of adding controller (don't laugh - still learning javascript). didn't work. error "student" undefined.

$scope.student.hasselectedcourses = !($scope.student.schedule === null);

i think way store hasselectedcourses boolean in database, i'm concerned integrity of field , getting situation student's selected courses , field not in sync each other.

is there way accomplish bit of logic rather data storage or storing in database way go?

assuming student.schedule null if no courses selected (which normal pattern firebase):

<tbody>   <tr ng-repeat="(id, student) in students">     <td>{{ student.firstname }}</td>     <td>{{ student.lastname }}</td>     <td>{{ student.type }}</td>     <td>         <span ng-if="student.schedule">yes<span>         <span ng-if="!student.schedule">no<span> <!-- these spans icons or whatever want -->     </td>     <td>...</td>   </tr> </tbody>

alternatively

    <td>         {{student.schedule ? 'yes' : 'no'}}     </td>

a side note: if aren't it's worth include angularfire app. live 3-way binding way impress.


Comments

Post a Comment

Popular posts from this blog

c++ - Difference between pre and post decrement in recursive function argument -

i have following sample code used pre-decrement void function(int c) { if(c == 0) { return; } else { cout << "dp" << c << endl; function(--c); cout << c << endl; return; } } this function give output input 4 : dp3 dp2 dp1 dp0 0 1 2 3 but when use post decrement void function(int c) { if(c == 0) { return; } else { cout << "dp" << c << endl; function(c--); cout << c << endl; return; } } output goes in infinite loop dp4 can explain me in detail why happens ? this happens because function(c--) called same value of c , when finishes c decremented. recursively called, hence called same value no chance of return , hit stack overflow error. assume this, int x = 1, y = 0; y = x++ result y == 1 , x == 2. if y = ++x , bot x , y 2.
Read more

php - Nothing but 'run(); ' when browsing to my local project, how do I fix this? -

i added new project. made mistake in projectname.conf file in sites-available apache2, led me reinstalling apache2. after reinstalling , re-enabling projects on every page of every project .. <body> run(); </body> .. i've run composer update, restarted service, restarted pc, checked config files, tried disabling new project. there nothing in error log, , access.log: 127.0.0.1 - - [15/may/2015:01:40:47 +0200] "get / http/1.1" 304 181 "-" "mozilla/5.0 (x11; ubuntu; linux x86_64; rv:38.0) gecko/20100101 firefox/38.0" maybe i'm forgetting apache2 reinstall? don't think did different last time installed it. looks haven't setup php correctly. take @ this great guide , maybe you're forgetting link php config apache2.
Read more

php - How can I echo out this array? -

i don't know how go grabbing data in variable , put foreach loop. class tree{ private $info = array( array('name'=>'jim','state'=>'nu','company'=>'nu','phone'=>array('cell'=>'5615111111','office'=>'5611111111'),'email'=>array('primary'=>'exs@example.com','ex@there.com')), array('name'=>'joe smith','city'=>'phoenix','phone'=>'4805551111','email'=>'jsmith@some_email.com'), array('name'=>'john doe','city'=>'chandler','company'=>'doe co.','email'=>array('jdoe@gmail.com','personal'=>'email@email.com'),'phone'=>'6025550002') ); } if you're inside of class, can access private variable using $this->variablename . example, i...
Read more