fd20f90cca
- The original intention of the proxy was to collect up all the requires in our helpers into one place - This has since been expanded and used in more places, in more ways - In hindsight there are now multiple different types of requires in the proxy: - One: true frontend rendering framework requires (stuff from deep inside theme-engine) - Two: data manipulation/sdk stuff, belongs to the frontend, ways to process API data - Three: actual core stuff from Ghost, that we wish wasn't here / needs to be passed in a controlled way - This commit pulls out One into a new rendering service, so at least that stuff is managed independently - This draws the lines clearly between what's internal to the frontend and what isn't - It also highlights that the theme-engine needs to be divided up / refactored so that we don't have these deep requires
59 lines
2.4 KiB
JavaScript
59 lines
2.4 KiB
JavaScript
// ### Pagination Helper
|
|
// `{{pagination}}`
|
|
// Outputs previous and next buttons, along with info about the current page
|
|
const {templates, hbs} = require('../services/rendering');
|
|
|
|
const errors = require('@tryghost/errors');
|
|
const tpl = require('@tryghost/tpl');
|
|
const _ = require('lodash');
|
|
|
|
const messages = {
|
|
invalidData: 'The {{pagination}} helper was used outside of a paginated context. See https://ghost.org/docs/themes/helpers/pagination/.',
|
|
valuesMustBeDefined: 'All values must be defined for page, pages, limit and total',
|
|
nextPrevValuesMustBeNumeric: 'Invalid value, Next/Prev must be a number',
|
|
valuesMustBeNumeric: 'Invalid value, check page, pages, limit and total are numbers'
|
|
};
|
|
|
|
const createFrame = hbs.handlebars.createFrame;
|
|
|
|
module.exports = function pagination(options) {
|
|
options = options || {};
|
|
options.hash = options.hash || {};
|
|
options.data = options.data || {};
|
|
|
|
if (!_.isObject(this.pagination) || _.isFunction(this.pagination)) {
|
|
throw new errors.IncorrectUsageError({
|
|
level: 'normal',
|
|
message: tpl(messages.invalidData),
|
|
help: 'https://ghost.org/docs/themes/helpers/pagination/'
|
|
});
|
|
}
|
|
|
|
if (_.isUndefined(this.pagination.page) || _.isUndefined(this.pagination.pages) ||
|
|
_.isUndefined(this.pagination.total) || _.isUndefined(this.pagination.limit)) {
|
|
throw new errors.IncorrectUsageError({
|
|
message: tpl(messages.valuesMustBeDefined)
|
|
});
|
|
}
|
|
|
|
if ((!_.isNull(this.pagination.next) && !_.isNumber(this.pagination.next)) ||
|
|
(!_.isNull(this.pagination.prev) && !_.isNumber(this.pagination.prev))) {
|
|
throw new errors.IncorrectUsageError({
|
|
message: tpl(messages.nextPrevValuesMustBeNumeric)
|
|
});
|
|
}
|
|
|
|
if (!_.isNumber(this.pagination.page) || !_.isNumber(this.pagination.pages) ||
|
|
!_.isNumber(this.pagination.total) || !_.isNumber(this.pagination.limit)) {
|
|
throw new errors.IncorrectUsageError({message: tpl(messages.valuesMustBeNumeric)});
|
|
}
|
|
|
|
// CASE: The pagination helper should have access to the pagination properties at the top level.
|
|
_.merge(this, this.pagination);
|
|
// CASE: The pagination helper will forward attributes passed to it.
|
|
_.merge(this, options.hash);
|
|
const data = createFrame(options.data);
|
|
|
|
return templates.execute('pagination', this, {data});
|
|
};
|