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| // includes bindings for fetching/fetched | |
| PaginatedCollection = Backbone.Collection.extend({ | |
| initialize: function() { | |
| _.bindAll(this, 'parse', 'url', 'nextPage', 'previousPage'); | |
| this.page = 1; | |
| }, | |
| fetch: function(options) { | |
| options || (options = {}); | |
| this.trigger("fetching"); | |
| var self = this; | |
| var success = options.success; | |
| options.success = function(resp) { | |
| self.trigger("fetched"); | |
| if(success) { success(self, resp); } | |
| }; | |
| Backbone.Collection.prototype.fetch.call(this, options); | |
| }, | |
| parse: function(resp) { | |
| this.page = resp.page; | |
| this.perPage = resp.per_page; | |
| this.total = resp.total; | |
| return resp.models; | |
| }, | |
| url: function() { | |
| return this.base_url + '?' + $.param({page: this.page}); | |
| }, | |
| nextPage: function() { | |
| this.page = this.page + 1; | |
| this.fetch(); | |
| }, | |
| previousPage: function() { | |
| this.page = this.page - 1; | |
| this.fetch(); | |
| } | |
| }); |
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| PaginatedView = Backbone.View.extend({ | |
| initialize: function() { | |
| _.bindAll(this, 'get_previous', 'get_next', 'render'); | |
| this.collection.bind('refresh', this.render); | |
| }, | |
| events: { | |
| 'click a.prev': 'previous', | |
| 'click a.next': 'next' | |
| }, | |
| render: function() { | |
| var page_info = {}; | |
| page_info.total = this.collection.total; | |
| page_info.page = this.collection.page; | |
| page_info.perPage = this.collection.perPage; | |
| page_info.pages = Math.ceil(page_info.total / page_info.perPage); | |
| var max = Math.min(page_info.total, page_info.page * page_info.perPage); | |
| if(page_info.total == page_info.pages * page_info.perPage) { | |
| max = page_info.total; | |
| } | |
| page_info.range = [(page_info.page - 1) * page_info.perPage + 1, max]; | |
| if(page_info.page > 1) { | |
| page_info.prev = page_info.page - 1; | |
| } | |
| else { page_info.prev = false; } | |
| if(page_info.page < page_info.pages) { | |
| page_info.next = page_info.page + 1; | |
| } | |
| else { page_info.next = false; } | |
| this.el.html(JST.pagination(page_info)); | |
| }, | |
| previous: function() { | |
| this.collection.previousPage(); | |
| return false; | |
| }, | |
| next: function() { | |
| this.collection.nextPage(); | |
| return false; | |
| } | |
| }); |
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| <% if(pages > 1) { %> | |
| <% if(prev) { %> | |
| <a href="#" class="prev">previous</a> | |
| <% } else { %> | |
| <span>previous</span> | |
| <% } %> | |
| <%= range[0] %>..<%= range[1] %> of <%= total %> | |
| <% if(next) { %> | |
| <a href="#" class="next">next</a> | |
| <% } else { %> | |
| <span>next</span> | |
| <% } %> | |
| <% } %> |
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