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  1. Page Query Boss Build complex nested queries containing multiple fields and pages and return an array or JSON. This is useful to fetch data for SPA and PWA. You can use the Module to transform a ProcessWire Page or PageArray – even RepeaterMatrixPageArrays – into an array or JSON. Queries can be nested and contain closures as callback functions. Some field-types are transformed automatically, like Pageimages or MapMarker. Installation Via ProcessWire Backend It is recommended to install the Module via the ProcessWire admin "Modules" > "Site" > "Add New" > "Add Module from Directory" using the PageQueryBoss class name. Manually Download the files from Github or the ProcessWire repository: https://modules.processwire.com/modules/page-query-builder/ Copy all of the files for this module into /site/modules/PageQueryBoss/ Go to “Modules > Refresh” in your admin, and then click “install” for the this module. Module Methods There are two main methods: Return query as JSON $page->pageQueryJson($query); Return query as Array $page->pageQueryArray($query); Building the query The query can contain key and value pairs, or only keys. It can be nested and contain closures for dynamic values. To illustrate a short example: // simple query: $query = [ 'height', 'floors', ]; $pages->find('template=skyscraper')->pageQueryJson($query); Queries can be nested, contain page names, template names or contain functions and ProcessWire selectors: // simple query: $query = [ 'height', 'floors', 'images', // < some fileds contain default sub-queries to return data 'files' => [ // but you can also overrdide these defaults: 'filename' 'ext', 'url', ], // Assuming there are child pages with the architec template, or a // field name with a page relation to architects 'architect' => [ // sub-query 'name', 'email' ], // queries can contain closure functions that return dynamic content 'querytime' => function($parent){ return "Query for $parent->title was built ".time(); } ]; $pages->find('template=skyscraper')->pageQueryJson($query); Keys: A single fieldname; height or floors or architects The Module can handle the following fields: Strings, Dates, Integer… any default one-dimensional value Page references Pageimages Pagefiles PageArray MapMarker FieldtypeFunctional A template name; skyscraper or city Name of a child page (page.child.name=pagename); my-page-name A ProcessWire selector; template=building, floors>=25 A new name for the returned index passed by a # delimiter: // the field skyscraper will be renamed to "building": $query = ["skyscraper`#building`"] Key value pars: Any of the keys above (1-5) with an new nested sub-query array: $query = [ 'skyscraper' => [ 'height', 'floors' ], 'architect' => [ 'title', 'email' ], ] A named key and a closure function to process and return a query. The closure gets the parent object as argument: $query = [ 'architecs' => function($parent) { $architects = $parent->find('template=architect'); return $architects->arrayQuery(['name', 'email']); // or return $architects->explode('name, email'); } ] Real life example: $query = [ 'title', 'subtitle', // naming the key invitation 'template=Invitation, limit=1#invitation' => [ 'title', 'subtitle', 'body', ], // returns global speakers and local ones... 'speakers' => function($page){ $speakers = $page->speaker_relation; $speakers = $speakers->prepend(wire('pages')->find('template=Speaker, global=1, sort=-id')); // build a query of the speakers with return $speakers->arrayQuery([ 'title#name', // rename title field to name 'subtitle#ministry', // rename subtitle field to ministry 'links' => [ 'linklabel#label', // rename linklabel field to minlabelistry 'link' ], ]); }, 'Program' => [ // Child Pages with template=Program 'title', 'summary', 'start' => function($parent){ // calculate the startdate from timetables return $parent->children->first->date; }, 'end' => function($parent){ // calculate the endate from timetables return $parent->children->last->date; }, 'Timetable' => [ 'date', // date 'timetable#entry'=> [ 'time#start', // time 'time_until#end', // time 'subtitle#description', // entry title ], ], ], // ProcessWire selector, selecting children > name result "location" 'template=Location, limit=1#location' => [ 'title#city', // summary title field to city 'body', 'country', 'venue', 'summary#address', // rename summary field to address 'link#tickets', // rename ticket link 'map', // Mapmarker field, automatically transformed 'images', 'infos#categories' => [ // repeater matrix! > rename to categories 'title#name', // rename title field to name 'entries' => [ // nested repeater matrix! 'title', 'body' ] ], ], ]; if ($input->urlSegment1 === 'json') { header('Content-type: application/json'); echo $page->pageQueryJson($query); exit(); } Module default settings The modules settings are public. They can be directly modified, for example: $modules->get('PageQueryBoss')->debug = true; $modules->get('PageQueryBoss')->defaults = []; // reset all defaults Default queries for fields: Some field-types or templates come with default selectors, like Pageimages etc. These are the default queries: // Access and modify default queries: $modules->get('PageQueryBoss')->defaults['queries'] … public $defaults = [ 'queries' => [ 'Pageimages' => [ 'basename', 'url', 'httpUrl', 'description', 'ext', 'focus', ], 'Pagefiles' => [ 'basename', 'url', 'httpUrl', 'description', 'ext', 'filesize', 'filesizeStr', 'hash', ], 'MapMarker' => [ 'lat', 'lng', 'zoom', 'address', ], 'User' => [ 'name', 'email', ], ], ]; These defaults will only be used if there is no nested sub-query for the respective type. If you query a field with complex data and do not provide a sub-query, it will be transformed accordingly: $page->pageQueryArry(['images']); // returns something like this 'images' => [ 'basename', 'url', 'httpUrl', 'description', 'ext', 'focus'=> [ 'top', 'left', 'zoom', 'default', 'str', ] ]; You can always provide your own sub-query, so the defaults will not be used: $page->pageQueryArry([ 'images' => [ 'filename', 'description' ], ]); Overriding default queries: You can also override the defaults, for example $modules->get('PageQueryBoss')->defaults['queries']['Pageimages'] = [ 'basename', 'url', 'description', ]; Index of nested elements The index for nested elements can be adjusted. This is also done with defaults. There are 3 possibilities: Nested by name (default) Nested by ID Nested by numerical index Named index (default): This is the default setting. If you have a field that contains sub-items, the name will be the key in the results: // example $pagesByName = [ 'page-1-name' => [ 'title' => "Page one title", 'name' => 'page-1-name', ], 'page-2-name' => [ 'title' => "Page two title", 'name' => 'page-2-name', ] ] ID based index: If an object is listed in $defaults['index-id'] the id will be the key in the results. Currently, no items are listed as defaults for id-based index: // Set pages to get ID based index: $modules->get('PageQueryBoss')->defaults['index-id']['Page']; // Example return array: $pagesById = [ 123 => [ 'title' => "Page one title", 'name' => 123, ], 124 => [ 'title' => "Page two title", 'name' => 124, ] ] Number based index By default, a couple of fields are transformed automatically to contain numbered indexes: // objects or template names that should use numerical indexes for children instead of names $defaults['index-n'] => [ 'Pageimage', 'Pagefile', 'RepeaterMatrixPage', ]; // example $images = [ 0 => [ 'filename' => "image1.jpg", ], 1 => [ 'filename' => "image2.jpg", ] ] Tipp: When you remove the key 'Pageimage' from $defaults['index-n'], the index will again be name-based. Help-fill closures & tipps: These are few helpfill closure functions you might want to use or could help as a starting point for your own (let me know if you have your own): Get an overview of languages: $query = ['languages' => function($page){ $ar = []; $l=0; foreach (wire('languages') as $language) { // build the json url with segment 1 $ar[$l]['url']= $page->localHttpUrl($language).wire('input')->urlSegment1; $ar[$l]['name'] = $language->name == 'default' ? 'en' : $language->name; $ar[$l]['title'] = $language->getLanguageValue($language, 'title'); $ar[$l]['active'] = $language->id == wire('user')->language->id; $l++; } return $ar; }]; Get county info from ContinentsAndCountries Module Using the [ContinentsAndCountries Module](https://modules.processwire.com/modules/continents-and-countries/) you can extract iso code and names for countries: $query = ['country' => function($page){ $c = wire('modules')->get('ContinentsAndCountries')->findBy('countries', array('name', 'iso', 'code'),['code' =>$page->country]); return count($c) ? (array) $c[count($c)-1] : null; }]; Custom strings from a RepeaterTable for interface Using a RepeaterMatrix you can create template string for your frontend. This is usefull for buttons, labels etc. The following code uses a repeater with the name `strings` has a `key` and a `body` field, the returned array contains the `key` field as, you guess, keys and the `body` field as values: // build custom translations $query = ['strings' => function($page){ return array_column($page->get('strings')->each(['key', 'body']), 'body', 'key'); }]; Multilanguage with default language fallback Using the following setup you can handle multilanguage and return your default language if the requested language does not exist. The url is composed like so: `page/path/{language}/{content-type}` for example: `api/icf/zurich/conference/2019/de/json` // get contenttype and language (or default language if not exists) $lang = wire('languages')->get($input->urlSegment1); if(!$lang instanceof Nullpage){ $user->language = $lang; } else { $lang = $user->language; } // contenttype segment 2 or 1 if language not present $contenttype = $input->urlSegment2 ? $input->urlSegment2 : $input->urlSegment1; if ($contenttype === 'json') { header('Content-type: application/json'); echo $page->pageQueryJson($query); exit(); } Debug The module respects wire('config')->debug. It integrates with TracyDebug. You can override it like so: // turns on debug output no mather what: $modules->get('PageQueryBoss')->debug = true; Todos Make defaults configurable via Backend. How could that be done in style with the default queries? Module in alpha Stage: Subject to change This module is in alpha stage … Query behaviour (especially selecting child-templates, renaming, naming etc) could change
  2. We recently rebuilt the Architekturführer Köln (architectural guide Cologne) as a mobile-first JavaScript web app, powered by VueJS in the frontend and ProcessWire in the backend. Concept, design and implementation by schwarzdesign! The Architekturführer Köln is a guidebook and now a web application about architectural highlights in Cologne, Germany. It contains detailled information about around 100 objects (architectural landmarks) in Cologne. The web app offers multiple ways to search through all available objects, including: An interactive live map A list of object near the user's location Filtering based on architect, district and category Favourites saved by the user The frontend is written entirely in JavaScript, with the data coming from a ProcessWire-powered API-first backend. Frontend The app is built with the Vue framework and compiled with Webpack 4. As a learning exercise and for greater customizability we opted to not use Vue CLI, and instead wrote our own Webpack config with individually defined dependencies. The site is a SPA (Single Page Application), which means all internal links are intercepted by the Vue app and the corresponding routes (pages) are generated by the framework directly in the browser, using data retrieved from the API. It's also a PWA (Progressive Web App), the main feature of which is that you can install it to your home screen on your phone and launch it from there like a regular app. It also includes a service worker which catches requests to the API and returns cached responses when the network is not available. The Architekturführer is supposed to be taken with you on a walk through the city, and will keep working even if you are completely offline. Notable mentions from the tech stack: Vue Vue Router for the SPA functionality VueX for state management and storage / caching of the data returned through the API Leaflet (with Mapbox tiles) for the interactive maps Webpack 4 for compilation of the app into a single distributable Babel for transpilation of ES6+ SASS & PostCSS with Autoprefixer as a convenience for SASS in SFCs Google Workbox to generate the service worker instead of writing lots of boilerplate code Bootstrap 4 is barely used here, but we still included it's reboot and grid system Backend The ProcessWire backend is API-only, there are no server-side rendered templates, which means the only PHP template is the one used for the API. For this API, we used a single content type (template) with a couple of pre-defined endpoints (url segments); most importantly we built entdpoints to get a list of all objects (either including the full data, or only the data necessary to show teaser tiles), as well as individual objects and taxonomies. The API template which acts as a controller contains all the necessary switches and selectors to serve the correct response in <100 lines of code. Since we wanted some flexibility regarding the format in which different fields were transmitted over the api, we wrote a function to extract arbitrary page fields from ProcessWire pages and return them as serializable standard objects. There's also a function that takes a Pageimage object, creates multiple variants in different sizes and returns an object containing their base path and an array of variants (identified by their basename and width). We use that one to generate responsive images in the frontend. Check out the code for both functions in this gist. We used native ProcessWire data wherever possible, so as to not duplicate that work in the frontend app. For example: Page names from the backend translate to URLs in the frontend in the form of route parameters for the Vue Router Page IDs from ProcessWire are included in the API responses, we use those to identify objects across the app, for example to store the user's favourites, and as render keys for object lists Taxonomies have their own API endpoints, and objects contain their taxonomies only as IDs (in the same way ProcessWire uses Page References) Finally, the raw JSON data is cached using the cache API and this handy trick by @LostKobrakai to store raw JSON strings over the cache API. Screenshots
  3. For a while now, I've wanted to expand my skills into mobile app development. Having done some Googling and watched several YouTube videos regarding native versus hybrid apps, I decided to go native. I did my homework regarding React, Ionic, etc and decided to go native. I settled on the NativeScript + TypeScript combo although it seems most tutorials are about Angular. Anyway, after watching quite a number of videos, just when I was about to dive into things, someone turned off the lights! Progressive what? PWA? Haven't you heard about this? No, I haven't! Where have you been? Let's not go there... OK, so I don't know much about mobile apps as you can tell (or even much about frontend development as my personal websites do tell, ). At first, I dismissed Progressive Web Apps as another Google tech that is bound to fail....until I read that Twitter, Blah Blah, have joined the bandwagon and the thing is gaining serious traction. It was back to more Googling. I now know (I think) what Progressive Web Apps are (or are meant to be). Naturally, my first question was Progressive Web Apps versus Native apps. So, I asked Google. Google told me to stop asking that question. To be precise, it told me (at least with the first couple of results) that that was the wrong question to ask! I tried finding out why, but the answer was hidden down some deep mobile rabbit hole that I didn't have time to fully descend into. It seems I am back to where I started. Native apps seem to be promising first class citizenship (who doesn't want that?). On the other hand, I am being told, Progressive Web Apps are the bright shiny future that will solve all our problems (and maybe even shutdown the Play Store! ). Please be gentle with my ignorant self. I have asked Google but she hasn't bothered or cannot be bothered to reply or I am asking her the wrong questions. I simply want to know if Progressive Web Apps can or will one day be able to be used to: Build apps like WhatsApp, etc? Build games like Candy Crush (what?)? Build premium apps (how would that work?) Or...are Progressive Web Apps just a replacement for mobile.domain.com? Should I ditch my NativeScript?? If someone could help me out here (once you're done laughing at my silly questions ) and/or point me to resources that will answer my questions, I'll be forever grateful . Thanks
  4. ProcessWire & Vue.js — a Lovestory Introducing the all new ICF Conference Website The new ICF Conference Page — Fearless » What would happen if we were equipped to fearlessly face the daily challenges and live a life without fear? « This question is at the core of our next ICF Conference in 2019 in Zurich. Its also the question we set out to answer in terms of developing the new website; the all new ICF Conference website is our most advanced website in terms of technology, designed to take advantage of the latest web-technologies. Its a brand new design powered by a lean setup, using ProcessWire for easy content management and a slick frontend based on Vue.js, Quasar and a heavily customized Uikit theme. Technology-stack — From backend to frontend, technologies that are fun, easy and fast to develop with We built on the ICF Ladieslounge website as a solid foundation and took our learnings from building our last Conference Booklet PWA (Progressive Web App) and applied it to the new website. Some highlights of the new ICF Conference website: Completely decoupled backend and frontend Custom design based on Uikit frontend framework Changing of languages happens instantly, no page-reload required Easy content updates thanks to ProcessWire All data is transferred using a single request returning custom JSON » Continue reading on Medium And please don't forget to clap and share:
  5. Rebuilt my own site recently using all the knowledge, tips & tricks I've learnt from the PW docs, forums etc, including adding PWA features. Ran it through several publicly available audits and it passed OK - w3c validation, google page speed insights, google lighthouse, etc. Also engaged a digital marketing agency to audit it from a Google search POV. Still some tweaking to do on content & backlink fronts. Overall though happy with the result which could never have been achieved without the help and support of the ProcessWire community. Thank each and everyone of you. https://www.clipmagic.com.au
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