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Expose source events as `events` to Liquid templating

Akinori MUSHA 10 年之前
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共有 2 个文件被更改，包括 47 次插入 和 9 次删除
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  1. 21 8
      app/models/agents/data_output_agent.rb
  2. 26 1
      spec/models/agents/data_output_agent_spec.rb

+ 21 - 8
app/models/agents/data_output_agent.rb
查看文件 

@@ -39,6 +39,13 @@ module Agents
39 39 
               },
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               "_contents": "tag contents (can be an object for nesting)"
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             }
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+
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+        # Liquid Templating
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+
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+        In Liquid templating, the following variable is available:
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+
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+        * `events`: An array of events to being output sorted in descending order up to `events_to_show` in number.  For example, if source events contain a site title in the `site_title` key, you can put `{{events.first.site_title}}` at `template.title`.
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+
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       MD
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     end
44 51 
 
@@ -115,8 +122,20 @@ module Agents
115 122 
     end
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     def receive_web_request(params, method, format)
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-      if interpolated['secrets'].include?(params['secret'])
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-        items = received_events.order('id desc').limit(events_to_show).map do |event|
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+      unless interpolated['secrets'].include?(params['secret'])
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+        if format =~ /json/
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+          return [{ error: "Not Authorized" }, 401]
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+        else
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+          return ["Not Authorized", 401]
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+        end
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+      end
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+
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+      source_events = received_events.order(id: :desc).limit(events_to_show).to_a
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+
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+      interpolation_context.stack do
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+        interpolation_context['events'] = source_events
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+
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+        items = source_events.map do |event|
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           interpolated = interpolate_options(options['template']['item'], event)
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           interpolated['guid'] = {'_attributes' => {'isPermaLink' => 'false'},
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                                   '_contents' => interpolated['guid'].presence || event.id}
 
@@ -165,12 +184,6 @@ module Agents
165 184
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           return [content, 200, 'text/xml']
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         end
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-      else
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-        if format =~ /json/
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-          return [{ error: "Not Authorized" }, 401]
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-        else
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-          return ["Not Authorized", 401]
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-        end
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       end
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     end
176 189

+ 26 - 1
spec/models/agents/data_output_agent_spec.rb
查看文件 

@@ -93,9 +93,10 @@ describe Agents::DataOutputAgent do
93 93 
       expect(status).to eq(200)
94 94 
     end
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-    describe "outputtng events as RSS and JSON" do
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+    describe "outputting events as RSS and JSON" do
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       let!(:event1) do
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         agents(:bob_website_agent).create_event :payload => {
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+          "site_title" => "XKCD",
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           "url" => "http://imgs.xkcd.com/comics/evolving.png",
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           "title" => "Evolving",
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           "hovertext" => "Biologists play reverse Pokemon, trying to avoid putting any one team member on the front lines long enough for the experience to cause evolution."
 
@@ -104,6 +105,7 @@ describe Agents::DataOutputAgent do
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       let!(:event2) do
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         agents(:bob_website_agent).create_event :payload => {
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+          "site_title" => "XKCD",
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           "url" => "http://imgs.xkcd.com/comics/evolving2.png",
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           "title" => "Evolving again",
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           "date" => '',
 
@@ -113,6 +115,7 @@ describe Agents::DataOutputAgent do
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       let!(:event3) do
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         agents(:bob_website_agent).create_event :payload => {
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+          "site_title" => "XKCD",
116 119 
           "url" => "http://imgs.xkcd.com/comics/evolving0.png",
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           "title" => "Evolving yet again with a past date",
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           "date" => '2014/05/05',
 
@@ -204,6 +207,28 @@ describe Agents::DataOutputAgent do
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           ]
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         })
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       end
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+
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+      describe "interpolating \"events\"" do
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+        before do
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+          agent.options['template']['title'] = "XKCD comics as a feed{% if events.first.site_title %} ({{events.first.site_title}}){% endif %}"
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+          agent.save!
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+        end
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+
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+        it "can output RSS" do
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+          stub(agent).feed_link { "https://yoursite.com" }
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+          content, status, content_type = agent.receive_web_request({ 'secret' => 'secret1' }, 'get', 'text/xml')
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+          expect(status).to eq(200)
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+          expect(content_type).to eq('text/xml')
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+          expect(Nokogiri(content).at('/rss/channel/title/text()').text).to eq('XKCD comics as a feed (XKCD)')
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+        end
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+
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+        it "can output JSON" do
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+          content, status, content_type = agent.receive_web_request({ 'secret' => 'secret2' }, 'get', 'application/json')
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+          expect(status).to eq(200)
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+
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+          expect(content['title']).to eq('XKCD comics as a feed (XKCD)')
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+        end
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+      end
207 232 
     end
208 233
209 234 
     describe "outputting nesting" do