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Thread: How to pass JSON of a post with multiple comments to a view?

  1. #1
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    Default Unanswered: How to pass JSON of a post with multiple comments to a view?

    I am successfully showing a series of blog posts such as


    Code:
        {
            "stream": {
                "posts": [{
                    "post_id": "1",
                    "post_thumb": "pic",
                    "post_text": "bla1",
                },
                {
                    "post_id": "2",
                    "post_thumb": "pic",
                    "post_text": "bla2",
                }]
            }
        }
    by using this


    Code:
        Ext.define("MyApp.view.Home", {
            extend: 'Ext.navigation.View',
            xtype:  'homepanel',
        
            requires: [
            	'Ext.dataview.List',
            	'Ext.data.proxy.JsonP',
            	'Ext.data.Store',
            ],
        
            config: {
        		items: {
        
        			xtype: 'list',
        			itemTpl: [
        				'<img src="{post_thumb}" />',
        				'<p>{post_text}</p>'
        			].join(''),
        
        			store: {
        				autoLoad: true,
        				fields: [
        					'post_id',
        					'post_text',
        					'post_thumb'
        				],
        	            proxy: {
        	                type: 'jsonp',
        	                url:  'http://me.com/home/index_app',
        	                reader: {
        	                    type:         'json',
        	                    rootProperty: 'stream'
        	                }
        	            }
        	        }
        		}
            }
        });
    When a user taps to view the post he is taken to a panel that shows it. In that panel I'd like to show all comments in that post, but I'm unsure how the JSON should be formed for this.


    Would it be something like this? Or does this JSON need a different format?


    Code:
        {
            "stream": {
                "posts": [{
                    "post_id": "1",
                    "post_type": "text",
                    "post_thumb": "bla1",
                    "comment": [{
                        "comment_id": "7",
                        "comment_text": "asd",
                    },
                    {
                        "comment_id": "8",
                        "comment_text": "sdf",
                    }],
                }],
            }
        }

  2. #2
    Sencha - Sr Software Engineer mitchellsimoens's Avatar
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      1  

    Default

    That JSON is fine, since you aren't using associations then you can simply use rec.get('comments') to get the comments array.
    Mitchell Simoens @LikelyMitch
    Sencha Inc, Senior Software Engineer
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  3. #3
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    Default

    Thanks Mitchell - I don't seem to be able to loop through the comments though.

    I use this controller to show the post and comments on tap:

    Code:
    Ext.define('MyApp.controller.Main', {
        extend: 'Ext.app.Controller',
    
    
        config: {
            refs: {
                stream: 'homepanel'
            },
            control: {
                'homepanel list': {
    	            itemtap: 'showPost'
                }
            }
        },
    
    
        showPost: function(list, index, element, record) {
    		this.getStream().push({
    	    	xtype: 'panel',
    	    	title: record.get('post_author_name'),
    	    	html: [
    	    		'<img src="' + record.get('post_thumb') + '" />',
    	    		'<p>' + record.get('post_text') + '</p>',
    	    		'<p><img src="' + record.get('picture') + '" width="30" />' + record.get('post_author_name') + ' posted ' + record.get('timestamp') + '</p>',
    	    		'<p>' + record.get('comments') + '</p>'
    	    	].join(""),
    	    	scrollable: true,
    	    	styleHtmlContent: true
    		});
       	}
    });
    but I get this below the post

    Code:
    [object Object],[object Object]  // there are 2 comments in  JSON, BTW

  4. #4
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    Default

    Instead of html: you should use tpl: with XTemplate using <tpl for> to loop then feed your record in the data: config.

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