55 lines
2.1 KiB
JavaScript
55 lines
2.1 KiB
JavaScript
// ### Pagination Helper
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// `{{pagination}}`
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// Outputs previous and next buttons, along with info about the current page
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var proxy = require('./proxy'),
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_ = require('lodash'),
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errors = proxy.errors,
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i18n = proxy.i18n,
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createFrame = proxy.hbs.handlebars.createFrame,
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templates = proxy.templates,
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pagination;
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pagination = function (options) {
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options = options || {};
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options.hash = options.hash || {};
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options.data = options.data || {};
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if (!_.isObject(this.pagination) || _.isFunction(this.pagination)) {
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throw new errors.IncorrectUsageError({
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level: 'normal',
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message: i18n.t('warnings.helpers.pagination.invalidData'),
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help: 'https://ghost.org/docs/api/v2/handlebars-themes/helpers/pagination/'
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});
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}
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if (_.isUndefined(this.pagination.page) || _.isUndefined(this.pagination.pages) ||
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_.isUndefined(this.pagination.total) || _.isUndefined(this.pagination.limit)) {
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throw new errors.IncorrectUsageError({
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message: i18n.t('warnings.helpers.pagination.valuesMustBeDefined')
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});
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}
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if ((!_.isNull(this.pagination.next) && !_.isNumber(this.pagination.next)) ||
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(!_.isNull(this.pagination.prev) && !_.isNumber(this.pagination.prev))) {
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throw new errors.IncorrectUsageError({
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message: i18n.t('warnings.helpers.pagination.nextPrevValuesMustBeNumeric')
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});
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}
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if (!_.isNumber(this.pagination.page) || !_.isNumber(this.pagination.pages) ||
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!_.isNumber(this.pagination.total) || !_.isNumber(this.pagination.limit)) {
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throw new errors.IncorrectUsageError({message: i18n.t('warnings.helpers.pagination.valuesMustBeNumeric')});
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}
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// CASE: The pagination helper should have access to the pagination properties at the top level.
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_.merge(this, this.pagination);
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// CASE: The pagination helper will forward attributes passed to it.
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_.merge(this, options.hash);
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const data = createFrame(options.data);
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return templates.execute('pagination', this, {data});
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};
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module.exports = pagination;
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