Variables between factories in angular.js - angularjs

Question

I'm currently learning angular and have hit a roadblock.
The second factory (shown below) makes an http request like this: http://example.com/api/get_post/?post_id=7129&callback=JSON_CALLBACK');
I want the post ID to be a variable. So depending on which blog title is clicked, I can pass the correct variable into that http request.
In other words, I guess I want to take a result from the first factory (blogAPIservice) and use it in the second factory.
Makes sense??
<!-- FACTORIES -->
angular.module('blogApp.services',[])
.factory('blogAPIservice',function($http) {
var blogAPI = [];
var blogs = $http.jsonp('http://example.com/api/get_recent_posts/?count=10&callback=JSON_CALLBACK');
blogs.success(function(data) {
$.each(data.posts, function(i, blog) {
var fromNow = moment(blog.date).fromNow();
blogAPI.push({
url: blog.url,
title: blog.title,
excerpt: blog.excerpt,
date : fromNow,
id: blog.id
})
});
});
var factory = {};
factory.getBlogs = function () {
return blogAPI;
};
return factory;
})
.factory('singlePostService',function($http) {
var singleAPI = [];
var postID = '7129';
var singlePost = $http.jsonp('http://example.com/api/get_post/?post_id=7129&callback=JSON_CALLBACK');
singlePost.success(function(data) {
singleAPI.push({
title: data.post.title,
content: data.post.content
})
});
var factory = {};
factory.getSinglePost = function () {
return singleAPI;
};
return factory;
})
And here are the controllers:
angular.module('blogApp.controllers', [])
.controller('resultsController',function($scope, blogAPIservice) {
$scope.keywordFilter = null;
$scope.blogs = [];
init();
function init() {
$scope.blogs = blogAPIservice.getBlogs();
}
function grabID() {
$(this).attr('rel');
}
})
.controller('singlePostController',function($scope, singlePostService) {
$scope.keywordFilter = null;
$scope.singlePost = [];
init();
function init() {
$scope.singlePost = singlePostService.getSinglePost();
}
})
And finally the markup:
<li ng-repeat="blog in blogs">
{{ blog.title }}
</li>

Answer 1

You can inject the first service into the second one like this:
.factory('singlePostService',function($http, blogAPIservice) {
//Do something with blogAPIservice
}
For more information about depenency injection read the docs