流星js自定义分页 [英] Meteor js custom pagination
问题描述
我需要一个支持.我在YouTube教程之后写了一个分页,除了重新返回时效果很好.它只有2个按钮previous
和next
,单击下一个按钮时效果很好,但是上一个按钮仅向后退一次.假设我在集合中有20条记录,每次显示5条,下一个按钮可以转到第四页的末尾,但是上一个按钮不会向后退一步.请问我该怎么做才有分页经验?只要用户单击,上一个按钮就应该导航到最后一页.
分页按钮事件:
Template.myviews.events({
'click .previous': function () {
if (Session.get('skip') > 5 ) {
Session.set('skip', Session.get('skip') - 5 );
}
},
'click .next': function () {
Session.set('skip', Session.get('skip') + 5 );
}
});
出版物:
Meteor.publish('userSchools', function (skipCount) {
check(skipCount, Number);
user = Meteor.users.findOne({ _id: this.userId });
if(user) {
if(user.emails[0].verified) {
return SchoolDb.find({userId: Meteor.userId()}, {limit: 5, skip: skipCount});
} else {
throw new Meteor.Error('Not authorized');
return false;
}
}
});
订阅:
Session.setDefault('skip', 0);
Tracker.autorun(function () {
Meteor.subscribe('userSchools', Session.get('skip'));
});
Blaze分页按钮:
<ul class="pager">
<li class="previous"><a href="#">Previous</a> </li>
<li class="next"><a href="#">Next</a> </li>
</ul>
模板助手:
RenderSchool: function () {
if(Meteor.userId()) {
if(Meteor.user().emails[0].verified) {
return SchoolDb.find({userId: Meteor.userId()}).fetch().reverse();
} else {
FlowRouter.go('/');
Bert.alert('Please verify your account to proceed', 'success', 'growl-top-right');
}
}
}
您总共有6个文档,每页2个文档,共3页.
您在previous
按钮单击处理程序中的if
条件阻止您进入第一页:
if (Session.get('skip') > 2 /* testing */ ) {
...
}
对于第二页,skip
将等于2
,并且在下一次单击时,此条件将是false
,从而防止返回.
在第3页上时-您只能在第2页上进行操作,从而产生一种印象,即该按钮只能使用一次.
应该是这样的:
if (Session.get('skip') > 0 ) {
...
}
I kindly need a support. I have written a pagination following a YouTube tutorial, which works fine with the exception of when going backwards again. It has only 2 buttons, previous
and next
, when the next button is clicked it works fine but the previous button only go backwards once. Let's say I have 20 records in the collections paginated to display 5 at a time, the next button could go to the end to the fourth page but the previous button would not go pass one step backwards. Please what am I to do to have pagination experience? The previous button is suppose to navigate to the last page as long as the user clicks.
Events for the pagination buttons:
Template.myviews.events({
'click .previous': function () {
if (Session.get('skip') > 5 ) {
Session.set('skip', Session.get('skip') - 5 );
}
},
'click .next': function () {
Session.set('skip', Session.get('skip') + 5 );
}
});
Publication:
Meteor.publish('userSchools', function (skipCount) {
check(skipCount, Number);
user = Meteor.users.findOne({ _id: this.userId });
if(user) {
if(user.emails[0].verified) {
return SchoolDb.find({userId: Meteor.userId()}, {limit: 5, skip: skipCount});
} else {
throw new Meteor.Error('Not authorized');
return false;
}
}
});
Subscription:
Session.setDefault('skip', 0);
Tracker.autorun(function () {
Meteor.subscribe('userSchools', Session.get('skip'));
});
Blaze pagination buttons:
<ul class="pager">
<li class="previous"><a href="#">Previous</a> </li>
<li class="next"><a href="#">Next</a> </li>
</ul>
Template helper:
RenderSchool: function () {
if(Meteor.userId()) {
if(Meteor.user().emails[0].verified) {
return SchoolDb.find({userId: Meteor.userId()}).fetch().reverse();
} else {
FlowRouter.go('/');
Bert.alert('Please verify your account to proceed', 'success', 'growl-top-right');
}
}
}
You have 6 documents total with 2 docs per page, 3 pages in total.
Your if
condition in previous
button click handler prevents you from going to the first page:
if (Session.get('skip') > 2 /* testing */ ) {
...
}
For 2nd page skip
will equal 2
and on the next click this condition will be false
, preventing from going back.
When you're on the 3rd page — you can go on 2nd only, creating an impression that button works only once.
It should be like this:
if (Session.get('skip') > 0 ) {
...
}
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