handlebars.js | 易学教程

Executing javascript inside Handlebars template

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问题 I'm totally new to js template engines. Handlebars seems to be the popular choice. I don't dislike the syntax for doing conditions, loops and so on, but since I'm perfectly capable of and feel more comfortable using plain old js and I'm not planning to let anyone who doesn't know js touch my templates, I'm asking if Handlebars supports this. Of course the most popular choice isn't always the best. I'm more of a Mootools guy and jQuery drives me crazy(great library, just not for me). So if

Pass JavaScript object/hash to Handlebars helper?

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问题 Is it possible to pass a JavaScript object/hash into a Handlebars helper call? I'd like to do something like this: <label>Label here</label> {{#textField {'id':'text_field_1', 'class':'some-class', size:30} }}{{/textField}} <p>Help text here.</p> Here is a jsFiddle. Currently it produces the following error Uncaught Error: Parse error on line 3: ...bel> {{#textField {'id':'text_field_1' ----------------------^ Expecting 'CLOSE', 'CLOSE_UNESCAPED', 'STRING', 'INTEGER', 'BOOLEAN', 'ID', 'DATA',

Error: Can't set headers after they are sent after tried to login

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There are a lot of question with my issue but, I tried some of the solution and no one worked. I'm getting the following error everytime I tried to do the login: Error: Can't set headers after they are sent. at validateHeader (_http_outgoing.js:491:11) at ServerResponse.setHeader (_http_outgoing.js:498:3) at ServerResponse.header (/home/ale/PycharmProjects/veople/webapp/functions/node_modules/express/lib/response.js:767:10) at userService.checkUser (/home/ale/PycharmProjects/veople/webapp/functions/index.js:54:18) at Object.firebase.auth.onAuthStateChanged.firebaseUser [as next] (/home/ale

handling jQuery onClick event on handlebars

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问题 I would like to set up a simple jQuery onClick event to make the UI dynamic on a handlebars template. I was wondering to addClass() after a specific click. consider the HTML (generated by handlebars) {{#if hasButton}} <div id="container"> <button type="submit" class="myButton">Click me!</button> </div> {{/if}} i.e: After a click within a button, its container will receive a loading class that will create the interaction using CSS. $(".myButton").on("click", function(event){ $(this).parent()

how to make a meteor template helper re-run/render after another template has rendered?

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问题 I have a template helper called {{renderNav}} in a template Nav e.g. Template.Nav.renderNav and within that helper function I want to parse the rendered output of another helper within a different template For example the helper Template.contentWindow.content which provides the html for {{content}} and my renderNav helper wants to part the html that replaces {{content}} to generate the html for {{renderNav}} how would I do this? right now the {{renderNav}} helper executes for or runs more

Compile Ember template string and running it programmatically, without an Ember application?

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I just want to run the template string against an object and examine the result I have a string that is a template. I've "compiled" it. Now I want to run it against an object and examine the result. But this doesn't work: var template = '<div>{{#each items}}<div>{{item}}</div>{{/each}}</div>'; var compiled = Ember.Handlebars.compile(template); var result = compiled({ items: [1, 2, 3] }); // ERRORS What I want to get is the DOM result of running my compiled string against an object. In other words, a set of DOM elements that looks something like this: <div> <div>1</div> <div>2</div> <div>3</div

Custom components with multiple yield-like sections

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问题 I'm trying to create an ember.js component which contains multiple content sections. The intuitive way to express the desire is to use semantic sub-components which will later be rendered in appropriate places so that, e.g. {{data-table …}} {{column name="Name" … }}} item.name {{/column}} ... {{/data-table}} will transform to <table …> <thead> <th>Name</th> ... </thead> <tbody> <tr> <td>First item name</td> … </tr> ... </tbody> </table> Is it possible to implement such constructs in

Is there a way to get index while iterating through a collection in Meteor? [duplicate]

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This question already has an answer here: How can I get the index of an array in a Meteor template each loop? 6 answers The below example will generate a list of names of players, where players is a data set from a MongoDB database. <template name="players"> {{#each topScorers}} <div>{{name}}</div> {{/each}} </template> However, I want to display four of them in a row, and after four players is printed, I want to divide the line by <hr /> and then continue. For instance, <template name="players"> {{#each topScorers}} <div style="float:left;">{{name}}</div> {{if index%4==0}} <hr style="clear

Ember template not updating from arraycontroller

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In my app, a user can enter a description of a friend or upvote a description that is already present. Both methods (createDescription and upvoteDescription) persist in the database. upvoteDescription changes the DOM, but createDescription does not. It may be because I'm passing a parameter in the model, but I can't get around that -- the api needs it. //descriptions route App.DescriptionsRoute = Ember.Route.extend({ ... model: function () { var store = this.get('store'), friend = this.modelFor('friend'); return store.find('description', {friend_id: friend.id}); } }) //descriptions controller

Ember.Component (block form): more than one outlet {{yield}}

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问题 I see that ember has a very nice mechanism for wrapping content in a component using the {{yield}} mechanism documented here. So, to use the example in the documentation, I can have a blog-post component template defined like so: <script type="text/x-handlebars" id="components/blog-post"> <h1>{{title}}</h1> <div class="body">{{yield}}</div> </script> I can then embed blog-post into any other template using the form: {{#blog-post title=title}} <p class="author">by {{author}}</p> {{body}} {{