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fix(open_graph): remove duplicate twitter card tags #3668

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merged 3 commits into from
Aug 22, 2019
Merged

fix(open_graph): remove duplicate twitter card tags #3668

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2fe5960
fix: remove duplicated twitter card tags
SukkaW Aug 15, 2019
b029921
test(open_graph): add og:locale & remove twitter:title
SukkaW Aug 15, 2019
65757c9
test(open_graph): remove twitter:description & update item
SukkaW Aug 15, 2019
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4 changes: 0 additions & 4 deletions lib/plugins/helper/open_graph.js
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Original file line number Diff line number Diff line change
Expand Up @@ -116,10 +116,6 @@ function openGraphHelper(options = {}) {
}

result += meta('twitter:card', twitterCard);
result += meta('twitter:title', title);
if (description) {
result += meta('twitter:description', description, false);
}

if (images.length) {
result += meta('twitter:image', images[0], false);
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@yoshinorin yoshinorin Aug 20, 2019 •
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twitter:image is deletable. Isn't it?

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@yoshinorin It seems like og:image support multiple images while twitter:image only support one image. The docs from twitter do not mention multiple images usage.

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@curbengh curbengh Aug 21, 2019 •
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The doc is not exactly clear.

URL of image to use in the card. Images must be less than 5MB in size. JPG, PNG, WEBP and GIF formats are supported. Only the first frame of an animated GIF will be used. SVG is not supported.

"URL of image....Images must..."; image? images?

Anyway, the doc does mention twitter:image fallback to og:image, so I think it's redundant too.

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@yoshinorin yoshinorin Aug 21, 2019 •
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@SukkaW @curbengh

I found following comments from twitter developers forum.

According to comments. The twitter card use last og:image if multiple og:image tags exists. It's not following ogp specification.

They are very old comments (4~6 years ago). I could not find newer information. IMHO we should use twitter:image if we can not find more information about this matter.

I will merge this if other opinion does not exist after wait a while.

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According to comments. The twitter card use last og:image if multiple og:image tags exists. It's not following ogp specification.

I figure most users would expect the first image, which is the current behavior of open_graph.js. Let's keep twitter:image for now.

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6 changes: 2 additions & 4 deletions test/scripts/helpers/open_graph.js
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Expand Up @@ -36,8 +36,7 @@ describe('open_graph', () => {
meta({property: 'og:url'}),
meta({property: 'og:site_name', content: hexo.config.title}),
meta({property: 'og:updated_time', content: post.updated.toISOString()}),
meta({name: 'twitter:card', content: 'summary'}),
meta({name: 'twitter:title', content: hexo.config.title})
meta({name: 'twitter:card', content: 'summary'})
].join('\n'));

return Post.removeById(post._id);
Expand Down Expand Up @@ -424,15 +423,14 @@ describe('open_graph', () => {
result.should.not.contain(meta({property: 'og:updated_time', content: '2016-05-23T21:20:21.372Z'}));
});

it('description - do not add /(?:og:|twitter:)?description/ meta tags if there is no description', () => {
it('description - do not add /(?:og:)?description/ meta tags if there is no description', () => {
const result = openGraph.call({
page: { },
config: {},
is_post: isPost
}, { });

result.should.not.contain(meta({property: 'og:description'}));
result.should.not.contain(meta({property: 'twitter:description'}));
result.should.not.contain(meta({property: 'description'}));
});

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