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Question

I am trying post a comment from an input form to my database. The comment I am passing in currently logs as undefined. The service doesn't log and I get a 500 server error: user_id violates not null constraint. What am I doing incorrectly?

HTML(updated)

<div ng-controller="CommentsCtrl as commentsCtrl">
 <div ng-show="makeComment" class="collapsible-header">
     <input ng-model="comment" type="text" name="comment" id="comment_content" class="col s11 m11 l11" placeholder="Make a comment.">
         <a href="" type="submit" class="col s1 m1 l1 black-text comment" ng-click="commentsCtrl.createComment(comment, userId, postId)"><i class="material-icons">check_circle</i></a>
  </div>

Controller - CommentsCtrl(Updated)

this.comment = '';

createComment(comment, userId, postId) {
 return this.commentsService.createComment(comment, userId, postId);
 }
}

Service - CommentsService(Updated)

this.createcomment = $http;
this.commentContent = '';
this.postId;
this.userId;

createComment(comment, userId, postId) {

this.createcomment.post('/comments', { comment: this.commentContent, userId: this.userId, postId: this.postId })
.then((res) => {
  this.comment = res.data;
})
.catch((err) => {
  return err;
});
}

Answer 1

You are not passing any values for userId or postId:

this.commentsService.createComment(comment);

They are null.